./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/sum10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/sum10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a --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 f341d659968a9193c951bd8eec2bcf2a384f8494a1f57cb579da98ce5ebdb030 --- 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-b5237d8 [2022-11-21 14:04:42,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 14:04:42,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 14:04:42,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 14:04:42,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 14:04:42,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 14:04:42,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 14:04:42,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 14:04:42,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 14:04:42,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 14:04:42,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 14:04:42,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 14:04:42,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 14:04:42,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 14:04:42,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 14:04:42,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 14:04:42,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 14:04:42,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 14:04:42,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 14:04:42,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 14:04:42,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 14:04:42,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 14:04:42,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 14:04:42,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 14:04:42,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 14:04:42,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 14:04:42,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 14:04:42,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 14:04:42,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 14:04:42,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 14:04:42,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 14:04:42,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 14:04:42,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 14:04:42,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 14:04:42,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 14:04:42,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 14:04:42,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 14:04:42,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 14:04:42,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 14:04:42,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 14:04:42,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 14:04:42,644 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 14:04:42,681 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 14:04:42,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 14:04:42,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 14:04:42,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 14:04:42,683 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 14:04:42,683 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 14:04:42,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 14:04:42,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 14:04:42,684 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 14:04:42,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 14:04:42,686 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 14:04:42,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 14:04:42,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 14:04:42,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 14:04:42,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 14:04:42,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 14:04:42,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 14:04:42,687 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 14:04:42,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 14:04:42,688 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 14:04:42,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 14:04:42,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 14:04:42,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 14:04:42,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 14:04:42,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:04:42,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 14:04:42,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 14:04:42,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 14:04:42,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 14:04:42,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 14:04:42,691 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 14:04:42,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 14:04:42,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 14:04:42,692 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_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f341d659968a9193c951bd8eec2bcf2a384f8494a1f57cb579da98ce5ebdb030 [2022-11-21 14:04:43,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 14:04:43,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 14:04:43,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 14:04:43,054 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 14:04:43,055 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 14:04:43,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/reducercommutativity/sum10-1.i [2022-11-21 14:04:46,135 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 14:04:46,330 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 14:04:46,331 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/sv-benchmarks/c/reducercommutativity/sum10-1.i [2022-11-21 14:04:46,336 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/data/1eb9ca259/0b74a5997a734033aad3e7b75de310de/FLAGa27059e16 [2022-11-21 14:04:46,361 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/data/1eb9ca259/0b74a5997a734033aad3e7b75de310de [2022-11-21 14:04:46,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 14:04:46,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 14:04:46,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 14:04:46,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 14:04:46,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 14:04:46,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:04:46" (1/1) ... [2022-11-21 14:04:46,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5afa19fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:04:46, skipping insertion in model container [2022-11-21 14:04:46,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:04:46" (1/1) ... [2022-11-21 14:04:46,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 14:04:46,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 14:04:46,663 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_1b2f1125-3b86-4a68-b21b-a73c47cd798f/sv-benchmarks/c/reducercommutativity/sum10-1.i[1277,1290] [2022-11-21 14:04:46,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:04:46,677 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 14:04:46,698 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_1b2f1125-3b86-4a68-b21b-a73c47cd798f/sv-benchmarks/c/reducercommutativity/sum10-1.i[1277,1290] [2022-11-21 14:04:46,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:04:46,714 INFO L208 MainTranslator]: Completed translation [2022-11-21 14:04:46,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:04:46 WrapperNode [2022-11-21 14:04:46,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 14:04:46,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 14:04:46,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 14:04:46,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 14:04:46,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:04:46" (1/1) ... [2022-11-21 14:04:46,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:04:46" (1/1) ... [2022-11-21 14:04:46,751 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-11-21 14:04:46,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 14:04:46,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 14:04:46,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 14:04:46,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 14:04:46,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:04:46" (1/1) ... [2022-11-21 14:04:46,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:04:46" (1/1) ... [2022-11-21 14:04:46,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:04:46" (1/1) ... [2022-11-21 14:04:46,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:04:46" (1/1) ... [2022-11-21 14:04:46,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:04:46" (1/1) ... [2022-11-21 14:04:46,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:04:46" (1/1) ... [2022-11-21 14:04:46,781 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:04:46" (1/1) ... [2022-11-21 14:04:46,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:04:46" (1/1) ... [2022-11-21 14:04:46,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 14:04:46,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 14:04:46,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 14:04:46,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 14:04:46,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:04:46" (1/1) ... [2022-11-21 14:04:46,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:04:46,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:04:46,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 14:04:46,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 14:04:46,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 14:04:46,879 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2022-11-21 14:04:46,880 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2022-11-21 14:04:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 14:04:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 14:04:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 14:04:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 14:04:46,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 14:04:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 14:04:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 14:04:46,958 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 14:04:46,960 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 14:04:47,205 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 14:04:47,222 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 14:04:47,222 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 14:04:47,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:04:47 BoogieIcfgContainer [2022-11-21 14:04:47,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 14:04:47,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 14:04:47,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 14:04:47,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 14:04:47,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 02:04:46" (1/3) ... [2022-11-21 14:04:47,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e241634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:04:47, skipping insertion in model container [2022-11-21 14:04:47,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:04:46" (2/3) ... [2022-11-21 14:04:47,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e241634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:04:47, skipping insertion in model container [2022-11-21 14:04:47,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:04:47" (3/3) ... [2022-11-21 14:04:47,234 INFO L112 eAbstractionObserver]: Analyzing ICFG sum10-1.i [2022-11-21 14:04:47,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 14:04:47,279 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 14:04:47,374 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 14:04:47,386 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;@17d68ed2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 14:04:47,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 14:04:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 14:04:47,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 14:04:47,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:47,404 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:47,404 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:47,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:47,415 INFO L85 PathProgramCache]: Analyzing trace with hash -141219973, now seen corresponding path program 1 times [2022-11-21 14:04:47,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:47,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288922334] [2022-11-21 14:04:47,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:47,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:47,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:04:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:47,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:04:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:47,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:04:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:47,920 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 14:04:47,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:47,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288922334] [2022-11-21 14:04:47,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288922334] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:04:47,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725740117] [2022-11-21 14:04:47,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:47,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:47,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:04:47,928 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:04:47,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 14:04:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:48,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 14:04:48,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:48,109 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 14:04:48,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:04:48,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725740117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:48,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:04:48,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-21 14:04:48,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961981916] [2022-11-21 14:04:48,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:48,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 14:04:48,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:48,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 14:04:48,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:04:48,172 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 14:04:48,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:48,215 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2022-11-21 14:04:48,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 14:04:48,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-11-21 14:04:48,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:48,227 INFO L225 Difference]: With dead ends: 50 [2022-11-21 14:04:48,227 INFO L226 Difference]: Without dead ends: 24 [2022-11-21 14:04:48,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:04:48,236 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:48,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 14:04:48,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-21 14:04:48,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-11-21 14:04:48,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 14:04:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-21 14:04:48,283 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 28 [2022-11-21 14:04:48,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:48,284 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-21 14:04:48,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 14:04:48,285 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-21 14:04:48,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-21 14:04:48,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:48,287 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:48,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 14:04:48,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-21 14:04:48,493 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:48,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:48,495 INFO L85 PathProgramCache]: Analyzing trace with hash -618478211, now seen corresponding path program 1 times [2022-11-21 14:04:48,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:48,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905161759] [2022-11-21 14:04:48,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:48,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:48,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 14:04:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:48,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:04:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:48,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 14:04:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 14:04:48,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:48,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905161759] [2022-11-21 14:04:48,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905161759] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:04:48,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245539407] [2022-11-21 14:04:48,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:48,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:48,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:04:48,695 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:04:48,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 14:04:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:48,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 14:04:48,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 14:04:48,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:04:48,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245539407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:48,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:04:48,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-21 14:04:48,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880138162] [2022-11-21 14:04:48,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:48,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 14:04:48,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:48,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 14:04:48,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:04:48,841 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 14:04:48,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:48,853 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-11-21 14:04:48,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 14:04:48,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-11-21 14:04:48,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:48,855 INFO L225 Difference]: With dead ends: 42 [2022-11-21 14:04:48,855 INFO L226 Difference]: Without dead ends: 25 [2022-11-21 14:04:48,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:04:48,857 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:48,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 14:04:48,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-21 14:04:48,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-11-21 14:04:48,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 14:04:48,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-21 14:04:48,865 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 30 [2022-11-21 14:04:48,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:48,865 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-21 14:04:48,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 14:04:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-21 14:04:48,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-21 14:04:48,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:48,869 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:48,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 14:04:49,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:49,074 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:49,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:49,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1511029509, now seen corresponding path program 1 times [2022-11-21 14:04:49,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:49,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079457236] [2022-11-21 14:04:49,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:49,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:49,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 14:04:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:49,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 14:04:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:49,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 14:04:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:49,226 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 14:04:49,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:49,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079457236] [2022-11-21 14:04:49,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079457236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:04:49,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488887949] [2022-11-21 14:04:49,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:49,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:49,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:04:49,229 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:04:49,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 14:04:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:49,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 14:04:49,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-21 14:04:49,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:04:49,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488887949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:49,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:04:49,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-21 14:04:49,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412938827] [2022-11-21 14:04:49,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:49,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 14:04:49,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:49,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 14:04:49,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:04:49,350 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 14:04:49,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:49,362 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-21 14:04:49,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 14:04:49,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-21 14:04:49,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:49,363 INFO L225 Difference]: With dead ends: 39 [2022-11-21 14:04:49,364 INFO L226 Difference]: Without dead ends: 26 [2022-11-21 14:04:49,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:04:49,365 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:49,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 14:04:49,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-21 14:04:49,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-11-21 14:04:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 14:04:49,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-11-21 14:04:49,372 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 36 [2022-11-21 14:04:49,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:49,373 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-11-21 14:04:49,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 14:04:49,374 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-11-21 14:04:49,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-21 14:04:49,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:49,375 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:49,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 14:04:49,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:49,581 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:49,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:49,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1553738215, now seen corresponding path program 1 times [2022-11-21 14:04:49,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:49,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263998052] [2022-11-21 14:04:49,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:49,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:49,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 14:04:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:49,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 14:04:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:49,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:04:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 14:04:49,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:49,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263998052] [2022-11-21 14:04:49,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263998052] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:04:49,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758709638] [2022-11-21 14:04:49,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:49,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:49,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:04:49,720 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:04:49,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 14:04:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:49,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 14:04:49,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-21 14:04:49,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:04:49,907 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-21 14:04:49,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758709638] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:04:49,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:04:49,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-11-21 14:04:49,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658162780] [2022-11-21 14:04:49,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:04:49,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:04:49,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:49,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:04:49,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:04:49,910 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-21 14:04:49,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:49,959 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2022-11-21 14:04:49,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 14:04:49,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 38 [2022-11-21 14:04:49,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:49,961 INFO L225 Difference]: With dead ends: 54 [2022-11-21 14:04:49,961 INFO L226 Difference]: Without dead ends: 34 [2022-11-21 14:04:49,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:04:49,964 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:49,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 14:04:49,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-21 14:04:49,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-11-21 14:04:49,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 14:04:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-11-21 14:04:49,970 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 38 [2022-11-21 14:04:49,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:49,971 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-11-21 14:04:49,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-21 14:04:49,971 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-11-21 14:04:49,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-21 14:04:49,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:49,973 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:49,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-21 14:04:50,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:50,177 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:50,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:50,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1124150243, now seen corresponding path program 2 times [2022-11-21 14:04:50,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:50,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474657683] [2022-11-21 14:04:50,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:50,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:50,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 14:04:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:50,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:04:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:50,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 14:04:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:50,353 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-21 14:04:50,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:50,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474657683] [2022-11-21 14:04:50,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474657683] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:04:50,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673294092] [2022-11-21 14:04:50,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:04:50,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:50,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:04:50,356 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:04:50,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 14:04:50,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 14:04:50,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:04:50,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 14:04:50,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-21 14:04:50,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:04:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-21 14:04:50,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673294092] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:04:50,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:04:50,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-11-21 14:04:50,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232776729] [2022-11-21 14:04:50,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:04:50,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 14:04:50,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:50,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 14:04:50,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-21 14:04:50,694 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 14:04:50,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:50,774 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2022-11-21 14:04:50,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 14:04:50,775 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2022-11-21 14:04:50,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:50,779 INFO L225 Difference]: With dead ends: 70 [2022-11-21 14:04:50,779 INFO L226 Difference]: Without dead ends: 48 [2022-11-21 14:04:50,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-21 14:04:50,782 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 17 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:50,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 80 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 14:04:50,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-21 14:04:50,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-11-21 14:04:50,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 14:04:50,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-11-21 14:04:50,809 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 50 [2022-11-21 14:04:50,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:50,810 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-11-21 14:04:50,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 14:04:50,810 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-11-21 14:04:50,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-21 14:04:50,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:50,812 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:50,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 14:04:51,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:51,025 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:51,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:51,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1238744391, now seen corresponding path program 3 times [2022-11-21 14:04:51,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:51,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672112481] [2022-11-21 14:04:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:51,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:51,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 14:04:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:51,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 14:04:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:51,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:04:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-21 14:04:51,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:51,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672112481] [2022-11-21 14:04:51,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672112481] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:04:51,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325010974] [2022-11-21 14:04:51,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 14:04:51,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:51,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:04:51,176 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:04:51,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 14:04:51,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-21 14:04:51,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:04:51,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 14:04:51,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:51,289 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-21 14:04:51,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:04:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-21 14:04:51,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325010974] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:04:51,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:04:51,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-11-21 14:04:51,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378823684] [2022-11-21 14:04:51,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:04:51,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:04:51,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:51,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:04:51,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:04:51,335 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-21 14:04:51,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:51,363 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2022-11-21 14:04:51,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 14:04:51,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2022-11-21 14:04:51,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:51,364 INFO L225 Difference]: With dead ends: 78 [2022-11-21 14:04:51,364 INFO L226 Difference]: Without dead ends: 55 [2022-11-21 14:04:51,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:04:51,365 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:51,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 68 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 14:04:51,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-21 14:04:51,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-21 14:04:51,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 14:04:51,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-11-21 14:04:51,372 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 64 [2022-11-21 14:04:51,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:51,372 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-11-21 14:04:51,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-21 14:04:51,373 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-11-21 14:04:51,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-21 14:04:51,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:51,374 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:51,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 14:04:51,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:51,580 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:51,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:51,580 INFO L85 PathProgramCache]: Analyzing trace with hash 756543039, now seen corresponding path program 4 times [2022-11-21 14:04:51,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:51,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103948075] [2022-11-21 14:04:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:51,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:51,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 14:04:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:51,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 14:04:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:51,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 14:04:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:51,866 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-11-21 14:04:51,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:51,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103948075] [2022-11-21 14:04:51,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103948075] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:04:51,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733638670] [2022-11-21 14:04:51,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 14:04:51,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:51,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:04:51,868 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:04:51,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 14:04:51,982 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 14:04:51,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:04:51,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 14:04:51,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:52,019 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 172 proven. 36 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-11-21 14:04:52,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:04:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-11-21 14:04:52,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733638670] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:04:52,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:04:52,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-11-21 14:04:52,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244063674] [2022-11-21 14:04:52,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:04:52,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 14:04:52,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:52,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 14:04:52,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:04:52,112 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:04:52,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:52,150 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2022-11-21 14:04:52,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 14:04:52,151 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 88 [2022-11-21 14:04:52,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:52,152 INFO L225 Difference]: With dead ends: 94 [2022-11-21 14:04:52,152 INFO L226 Difference]: Without dead ends: 63 [2022-11-21 14:04:52,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 175 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:04:52,153 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:52,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 90 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 14:04:52,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-21 14:04:52,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-21 14:04:52,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 14:04:52,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2022-11-21 14:04:52,160 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 88 [2022-11-21 14:04:52,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:52,161 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2022-11-21 14:04:52,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:04:52,161 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2022-11-21 14:04:52,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-21 14:04:52,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:52,163 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:52,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-21 14:04:52,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 14:04:52,369 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:52,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:52,369 INFO L85 PathProgramCache]: Analyzing trace with hash 953202487, now seen corresponding path program 5 times [2022-11-21 14:04:52,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:52,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123906188] [2022-11-21 14:04:52,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:52,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:52,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 14:04:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:52,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 14:04:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:52,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 14:04:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-21 14:04:52,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:52,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123906188] [2022-11-21 14:04:52,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123906188] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:04:52,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257897862] [2022-11-21 14:04:52,561 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 14:04:52,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:52,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:04:52,563 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:04:52,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 14:04:52,943 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-11-21 14:04:52,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:04:52,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 14:04:52,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:52,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 450 proven. 4 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2022-11-21 14:04:52,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:04:53,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-21 14:04:53,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257897862] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:04:53,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:04:53,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-21 14:04:53,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112368972] [2022-11-21 14:04:53,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:04:53,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:04:53,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:53,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:04:53,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:04:53,046 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-21 14:04:53,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:53,078 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2022-11-21 14:04:53,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 14:04:53,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2022-11-21 14:04:53,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:53,080 INFO L225 Difference]: With dead ends: 102 [2022-11-21 14:04:53,081 INFO L226 Difference]: Without dead ends: 71 [2022-11-21 14:04:53,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:04:53,084 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:53,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 66 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 14:04:53,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-21 14:04:53,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-21 14:04:53,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 14:04:53,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2022-11-21 14:04:53,093 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 112 [2022-11-21 14:04:53,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:53,094 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2022-11-21 14:04:53,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-21 14:04:53,094 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2022-11-21 14:04:53,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-21 14:04:53,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:53,096 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:53,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 14:04:53,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-21 14:04:53,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:53,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:53,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1215823185, now seen corresponding path program 6 times [2022-11-21 14:04:53,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:53,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177427149] [2022-11-21 14:04:53,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:53,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:53,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 14:04:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:53,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 14:04:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:53,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-21 14:04:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-21 14:04:53,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:53,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177427149] [2022-11-21 14:04:53,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177427149] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:04:53,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94457823] [2022-11-21 14:04:53,602 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 14:04:53,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:53,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:04:53,603 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:04:53,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 14:04:54,170 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-11-21 14:04:54,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:04:54,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 14:04:54,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 450 proven. 36 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2022-11-21 14:04:54,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:04:54,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-21 14:04:54,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94457823] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:04:54,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:04:54,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-11-21 14:04:54,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768217990] [2022-11-21 14:04:54,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:04:54,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 14:04:54,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:54,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 14:04:54,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:04:54,321 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-21 14:04:54,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:54,369 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-11-21 14:04:54,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 14:04:54,369 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 120 [2022-11-21 14:04:54,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:54,370 INFO L225 Difference]: With dead ends: 108 [2022-11-21 14:04:54,370 INFO L226 Difference]: Without dead ends: 77 [2022-11-21 14:04:54,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 238 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:04:54,372 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:54,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 108 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 14:04:54,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-21 14:04:54,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-11-21 14:04:54,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 14:04:54,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2022-11-21 14:04:54,379 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 120 [2022-11-21 14:04:54,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:54,380 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2022-11-21 14:04:54,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-21 14:04:54,380 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2022-11-21 14:04:54,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-21 14:04:54,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:54,399 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:54,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 14:04:54,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-21 14:04:54,610 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:54,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:54,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1982748809, now seen corresponding path program 7 times [2022-11-21 14:04:54,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:54,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723775776] [2022-11-21 14:04:54,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:54,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:26,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 14:05:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:30,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 14:05:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 14:05:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-21 14:05:36,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:36,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723775776] [2022-11-21 14:05:36,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723775776] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:05:36,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838121575] [2022-11-21 14:05:36,121 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 14:05:36,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:05:36,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:05:36,128 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:05:36,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2f1125-3b86-4a68-b21b-a73c47cd798f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 14:05:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:36,906 WARN L261 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 265 conjunts are in the unsatisfiable core [2022-11-21 14:05:36,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:05:37,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-21 14:05:39,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:39,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:39,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:39,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:39,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:39,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:39,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:39,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:39,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:39,258 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:05:39,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 464 treesize of output 178 [2022-11-21 14:05:42,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:42,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:42,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:42,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:42,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:42,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:42,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:42,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:42,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:42,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:05:42,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:42,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:42,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:42,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:42,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:42,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:42,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:42,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:42,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:05:42,359 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-21 14:05:42,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 844 treesize of output 307 [2022-11-21 14:05:43,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:05:43,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:05:43,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:43,534 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-21 14:05:43,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 810 treesize of output 307 [2022-11-21 14:05:44,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:05:44,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:05:44,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:44,788 INFO L321 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2022-11-21 14:05:44,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 794 treesize of output 310 [2022-11-21 14:05:45,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:05:45,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,985 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:05:45,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:45,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:46,003 INFO L321 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2022-11-21 14:05:46,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 797 treesize of output 313 [2022-11-21 14:05:47,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:05:47,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:05:47,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:47,296 INFO L321 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2022-11-21 14:05:47,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 827 treesize of output 316 [2022-11-21 14:05:48,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:05:48,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,527 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:05:48,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:48,539 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-21 14:05:48,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 792 treesize of output 307 [2022-11-21 14:05:49,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:49,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:49,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:49,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:49,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:49,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:49,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:49,864 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:05:49,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:49,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:49,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:49,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:49,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:05:49,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:49,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:49,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:49,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:49,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:49,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:49,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:49,883 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-21 14:05:49,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 792 treesize of output 307 [2022-11-21 14:05:51,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:05:51,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:05:51,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:51,168 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-21 14:05:51,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 792 treesize of output 307 [2022-11-21 14:05:52,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:52,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:52,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:52,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:52,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:52,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:52,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:52,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:52,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:52,376 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:05:52,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 787 treesize of output 284 [2022-11-21 14:05:53,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:53,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:53,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:53,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:53,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:53,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:53,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:53,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:53,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:53,391 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:05:53,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 112 treesize of output 106 [2022-11-21 14:05:56,057 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:05:56,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 633 treesize of output 193 [2022-11-21 14:05:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-21 14:05:56,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:06:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 4 proven. 981 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-21 14:06:24,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838121575] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:06:24,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:06:24,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 58, 48] total 144 [2022-11-21 14:06:24,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491557495] [2022-11-21 14:06:24,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:06:24,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2022-11-21 14:06:24,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:06:24,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2022-11-21 14:06:24,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=623, Invalid=19969, Unknown=0, NotChecked=0, Total=20592 [2022-11-21 14:06:24,367 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 144 states, 140 states have (on average 1.2285714285714286) internal successors, (172), 136 states have internal predecessors, (172), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-21 14:06:46,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:06:56,315 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 287 DAG size of output: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 14:08:40,915 WARN L233 SmtUtils]: Spent 1.65m on a formula simplification. DAG size of input: 459 DAG size of output: 89 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 14:14:36,727 WARN L233 SmtUtils]: Spent 5.52m on a formula simplification. DAG size of input: 234 DAG size of output: 218 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 14:14:41,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:14:45,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:14:47,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:14:50,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:14:52,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:14:54,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:15:42,382 WARN L233 SmtUtils]: Spent 45.03s on a formula simplification. DAG size of input: 158 DAG size of output: 151 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 14:16:37,095 WARN L233 SmtUtils]: Spent 51.00s on a formula simplification. DAG size of input: 158 DAG size of output: 151 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 14:16:40,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:16:42,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:16:45,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:16:46,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []