./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN --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 4a3cef13903dd032b032a92c3e6d07b1ee77361a4ee844998d70fb602ded6daa --- 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-6b4ec56 [2022-11-20 10:40:40,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:40:40,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:40:40,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:40:40,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:40:40,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:40:40,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:40:40,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:40:40,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:40:40,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:40:40,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:40:40,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:40:40,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:40:40,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:40:40,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:40:40,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:40:40,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:40:40,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:40:40,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:40:40,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:40:40,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:40:40,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:40:40,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:40:40,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:40:40,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:40:40,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:40:40,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:40:40,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:40:40,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:40:40,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:40:40,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:40:40,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:40:40,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:40:40,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:40:40,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:40:40,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:40:40,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:40:40,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:40:40,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:40:40,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:40:40,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:40:40,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:40:40,617 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:40:40,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:40:40,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:40:40,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:40:40,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:40:40,620 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:40:40,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:40:40,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:40:40,621 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:40:40,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:40:40,621 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:40:40,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:40:40,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:40:40,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:40:40,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:40:40,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:40:40,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:40:40,624 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:40:40,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:40:40,624 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:40:40,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:40:40,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:40:40,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:40:40,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:40:40,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:40:40,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:40:40,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:40:40,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:40:40,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:40:40,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:40:40,627 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:40:40,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:40:40,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:40:40,628 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_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a3cef13903dd032b032a92c3e6d07b1ee77361a4ee844998d70fb602ded6daa [2022-11-20 10:40:40,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:40:40,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:40:40,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:40:40,966 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:40:40,966 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:40:40,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound20.c [2022-11-20 10:40:44,016 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:40:44,187 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:40:44,188 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound20.c [2022-11-20 10:40:44,194 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/data/0af13aa1b/738689d7fc4b428483eef098d0d87901/FLAGaf2c144d0 [2022-11-20 10:40:44,218 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/data/0af13aa1b/738689d7fc4b428483eef098d0d87901 [2022-11-20 10:40:44,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:40:44,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:40:44,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:40:44,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:40:44,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:40:44,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:40:44" (1/1) ... [2022-11-20 10:40:44,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e8f53d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:44, skipping insertion in model container [2022-11-20 10:40:44,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:40:44" (1/1) ... [2022-11-20 10:40:44,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:40:44,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:40:44,456 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_6615a404-8cfd-494e-b6db-601fef807820/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound20.c[573,586] [2022-11-20 10:40:44,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:40:44,483 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:40:44,496 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_6615a404-8cfd-494e-b6db-601fef807820/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound20.c[573,586] [2022-11-20 10:40:44,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:40:44,514 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:40:44,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:44 WrapperNode [2022-11-20 10:40:44,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:40:44,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:40:44,516 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:40:44,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:40:44,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:44" (1/1) ... [2022-11-20 10:40:44,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:44" (1/1) ... [2022-11-20 10:40:44,540 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-11-20 10:40:44,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:40:44,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:40:44,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:40:44,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:40:44,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:44" (1/1) ... [2022-11-20 10:40:44,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:44" (1/1) ... [2022-11-20 10:40:44,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:44" (1/1) ... [2022-11-20 10:40:44,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:44" (1/1) ... [2022-11-20 10:40:44,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:44" (1/1) ... [2022-11-20 10:40:44,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:44" (1/1) ... [2022-11-20 10:40:44,575 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:44" (1/1) ... [2022-11-20 10:40:44,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:44" (1/1) ... [2022-11-20 10:40:44,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:40:44,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:40:44,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:40:44,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:40:44,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:44" (1/1) ... [2022-11-20 10:40:44,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:40:44,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:40:44,615 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:40:44,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:40:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:40:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 10:40:44,660 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 10:40:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:40:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:40:44,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:40:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 10:40:44,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 10:40:44,741 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:40:44,743 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:40:44,893 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:40:44,900 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:40:44,900 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 10:40:44,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:40:44 BoogieIcfgContainer [2022-11-20 10:40:44,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:40:44,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:40:44,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:40:44,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:40:44,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:40:44" (1/3) ... [2022-11-20 10:40:44,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81ec4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:40:44, skipping insertion in model container [2022-11-20 10:40:44,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:40:44" (2/3) ... [2022-11-20 10:40:44,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81ec4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:40:44, skipping insertion in model container [2022-11-20 10:40:44,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:40:44" (3/3) ... [2022-11-20 10:40:44,934 INFO L112 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound20.c [2022-11-20 10:40:44,964 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:40:44,964 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:40:45,062 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:40:45,069 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;@bfb0b95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:40:45,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:40:45,072 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 10:40:45,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 10:40:45,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:45,080 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:45,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:40:45,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:45,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1086166160, now seen corresponding path program 1 times [2022-11-20 10:40:45,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:45,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556836993] [2022-11-20 10:40:45,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:45,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:45,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:45,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556836993] [2022-11-20 10:40:45,213 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 10:40:45,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120075433] [2022-11-20 10:40:45,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:45,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:45,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:40:45,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:40:45,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:40:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:45,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 10:40:45,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:40:45,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:40:45,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120075433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:40:45,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:40:45,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:40:45,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636045817] [2022-11-20 10:40:45,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:40:45,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:40:45,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:45,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:40:45,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:40:45,410 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:40:45,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:45,441 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2022-11-20 10:40:45,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:40:45,444 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-11-20 10:40:45,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:45,456 INFO L225 Difference]: With dead ends: 47 [2022-11-20 10:40:45,456 INFO L226 Difference]: Without dead ends: 21 [2022-11-20 10:40:45,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:40:45,469 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:45,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:40:45,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-20 10:40:45,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-20 10:40:45,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:40:45,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-20 10:40:45,516 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 18 [2022-11-20 10:40:45,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:45,517 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-20 10:40:45,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:40:45,518 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-20 10:40:45,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:40:45,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:45,521 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:45,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:40:45,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 10:40:45,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:40:45,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:45,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1345709874, now seen corresponding path program 1 times [2022-11-20 10:40:45,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:45,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048234805] [2022-11-20 10:40:45,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:45,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:45,756 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:40:45,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902972151] [2022-11-20 10:40:45,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:45,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:45,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:40:45,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:40:45,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:40:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:45,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:40:45,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:45,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:40:45,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:40:45,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:45,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048234805] [2022-11-20 10:40:45,927 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:40:45,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902972151] [2022-11-20 10:40:45,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902972151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:40:45,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:40:45,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:40:45,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206859436] [2022-11-20 10:40:45,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:40:45,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:40:45,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:45,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:40:45,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:40:45,931 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 10:40:45,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:45,949 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-11-20 10:40:45,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:40:45,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-20 10:40:45,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:45,951 INFO L225 Difference]: With dead ends: 30 [2022-11-20 10:40:45,951 INFO L226 Difference]: Without dead ends: 23 [2022-11-20 10:40:45,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:40:45,953 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:45,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:40:45,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-20 10:40:45,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-20 10:40:45,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:40:45,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-20 10:40:45,961 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 19 [2022-11-20 10:40:45,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:45,962 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-20 10:40:45,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 10:40:45,963 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-20 10:40:45,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:40:45,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:45,964 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:45,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:40:46,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:46,170 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:40:46,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:46,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1347497334, now seen corresponding path program 1 times [2022-11-20 10:40:46,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:46,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240876511] [2022-11-20 10:40:46,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:46,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:46,189 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:40:46,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589500122] [2022-11-20 10:40:46,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:46,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:46,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:40:46,197 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:40:46,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:40:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:46,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:40:46,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:40:46,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:40:46,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:46,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240876511] [2022-11-20 10:40:46,463 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:40:46,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589500122] [2022-11-20 10:40:46,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589500122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:40:46,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:40:46,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:40:46,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89569242] [2022-11-20 10:40:46,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:40:46,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:40:46,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:46,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:40:46,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:40:46,471 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 10:40:46,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:46,614 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-11-20 10:40:46,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:40:46,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-20 10:40:46,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:46,616 INFO L225 Difference]: With dead ends: 33 [2022-11-20 10:40:46,617 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 10:40:46,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:40:46,618 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:46,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 80 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:40:46,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 10:40:46,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2022-11-20 10:40:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 10:40:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-20 10:40:46,627 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 19 [2022-11-20 10:40:46,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:46,628 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-20 10:40:46,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 10:40:46,628 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-20 10:40:46,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 10:40:46,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:46,629 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:46,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:40:46,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:46,835 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:40:46,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:46,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1636478750, now seen corresponding path program 1 times [2022-11-20 10:40:46,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:46,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566564114] [2022-11-20 10:40:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:46,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:46,859 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:40:46,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882095251] [2022-11-20 10:40:46,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:46,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:46,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:40:46,861 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:40:46,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:40:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:46,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 10:40:46,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:47,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:40:47,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:40:47,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:47,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566564114] [2022-11-20 10:40:47,326 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:40:47,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882095251] [2022-11-20 10:40:47,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882095251] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:40:47,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:40:47,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 16 [2022-11-20 10:40:47,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532592115] [2022-11-20 10:40:47,328 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:40:47,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:40:47,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:47,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:40:47,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:40:47,331 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 10:40:47,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:47,552 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-11-20 10:40:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:40:47,553 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 25 [2022-11-20 10:40:47,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:47,559 INFO L225 Difference]: With dead ends: 35 [2022-11-20 10:40:47,559 INFO L226 Difference]: Without dead ends: 30 [2022-11-20 10:40:47,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-20 10:40:47,569 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 28 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:47,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 92 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:40:47,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-20 10:40:47,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2022-11-20 10:40:47,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:40:47,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-11-20 10:40:47,582 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 25 [2022-11-20 10:40:47,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:47,585 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-11-20 10:40:47,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 10:40:47,586 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-11-20 10:40:47,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 10:40:47,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:47,587 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:47,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:40:47,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:47,794 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:40:47,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:47,795 INFO L85 PathProgramCache]: Analyzing trace with hash -126969667, now seen corresponding path program 1 times [2022-11-20 10:40:47,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:47,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357156089] [2022-11-20 10:40:47,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:47,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:47,820 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:40:47,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033202177] [2022-11-20 10:40:47,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:47,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:47,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:40:47,823 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:40:47,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:40:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:47,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:40:47,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:47,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:40:47,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:48,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:40:48,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:48,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357156089] [2022-11-20 10:40:48,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:40:48,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033202177] [2022-11-20 10:40:48,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033202177] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:40:48,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:40:48,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-11-20 10:40:48,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773993851] [2022-11-20 10:40:48,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:40:48,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:40:48,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:48,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:40:48,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:40:48,011 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 10:40:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:48,101 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2022-11-20 10:40:48,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:40:48,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 28 [2022-11-20 10:40:48,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:48,103 INFO L225 Difference]: With dead ends: 57 [2022-11-20 10:40:48,103 INFO L226 Difference]: Without dead ends: 52 [2022-11-20 10:40:48,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:40:48,105 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 30 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:48,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 106 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:40:48,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-20 10:40:48,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-20 10:40:48,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 10:40:48,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2022-11-20 10:40:48,118 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 28 [2022-11-20 10:40:48,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:48,118 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2022-11-20 10:40:48,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 10:40:48,119 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2022-11-20 10:40:48,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 10:40:48,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:48,120 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:48,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:40:48,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:48,326 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:40:48,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:48,327 INFO L85 PathProgramCache]: Analyzing trace with hash 972990450, now seen corresponding path program 2 times [2022-11-20 10:40:48,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:48,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372785210] [2022-11-20 10:40:48,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:48,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:48,341 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:40:48,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833099608] [2022-11-20 10:40:48,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:40:48,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:48,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:40:48,343 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:40:48,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:40:48,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:40:48,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:40:48,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:40:48,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:40:48,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 10:40:48,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:48,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372785210] [2022-11-20 10:40:48,715 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:40:48,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833099608] [2022-11-20 10:40:48,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833099608] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:40:48,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:40:48,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-11-20 10:40:48,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669671571] [2022-11-20 10:40:48,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:40:48,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:40:48,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:48,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:40:48,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:40:48,718 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-20 10:40:48,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:48,946 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2022-11-20 10:40:48,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 10:40:48,946 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 55 [2022-11-20 10:40:48,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:48,948 INFO L225 Difference]: With dead ends: 111 [2022-11-20 10:40:48,948 INFO L226 Difference]: Without dead ends: 106 [2022-11-20 10:40:48,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:40:48,949 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 120 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:48,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 131 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:40:48,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-20 10:40:48,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-11-20 10:40:48,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 81 states have internal predecessors, (92), 13 states have call successors, (13), 12 states have call predecessors, (13), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 10:40:48,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2022-11-20 10:40:48,971 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 55 [2022-11-20 10:40:48,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:48,971 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2022-11-20 10:40:48,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-20 10:40:48,972 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2022-11-20 10:40:48,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-20 10:40:48,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:48,975 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:48,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:40:49,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 10:40:49,181 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:40:49,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:49,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1909967598, now seen corresponding path program 3 times [2022-11-20 10:40:49,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:49,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549686940] [2022-11-20 10:40:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:49,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:49,215 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:40:49,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [9974175] [2022-11-20 10:40:49,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:40:49,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:49,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:40:49,217 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:40:49,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:40:49,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-20 10:40:49,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:40:49,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 10:40:49,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 20 proven. 425 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:40:49,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:49,958 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 20 proven. 245 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-20 10:40:49,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:49,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549686940] [2022-11-20 10:40:49,958 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:40:49,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9974175] [2022-11-20 10:40:49,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9974175] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:40:49,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:40:49,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2022-11-20 10:40:49,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141018620] [2022-11-20 10:40:49,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:40:49,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 10:40:49,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:49,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 10:40:49,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:40:49,961 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 24 states have internal predecessors, (128), 21 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2022-11-20 10:40:50,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:50,441 INFO L93 Difference]: Finished difference Result 201 states and 231 transitions. [2022-11-20 10:40:50,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-20 10:40:50,441 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 24 states have internal predecessors, (128), 21 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) Word has length 109 [2022-11-20 10:40:50,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:50,451 INFO L225 Difference]: With dead ends: 201 [2022-11-20 10:40:50,452 INFO L226 Difference]: Without dead ends: 196 [2022-11-20 10:40:50,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=665, Invalid=1141, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 10:40:50,454 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 178 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:50,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 216 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:40:50,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-20 10:40:50,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-11-20 10:40:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 151 states have (on average 1.1390728476821192) internal successors, (172), 151 states have internal predecessors, (172), 23 states have call successors, (23), 22 states have call predecessors, (23), 21 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-20 10:40:50,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 217 transitions. [2022-11-20 10:40:50,511 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 217 transitions. Word has length 109 [2022-11-20 10:40:50,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:50,512 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 217 transitions. [2022-11-20 10:40:50,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 24 states have internal predecessors, (128), 21 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2022-11-20 10:40:50,512 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 217 transitions. [2022-11-20 10:40:50,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-20 10:40:50,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:50,525 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:50,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-20 10:40:50,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:50,726 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:40:50,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:50,727 INFO L85 PathProgramCache]: Analyzing trace with hash 32762610, now seen corresponding path program 4 times [2022-11-20 10:40:50,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:50,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572895215] [2022-11-20 10:40:50,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:50,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:50,757 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:40:50,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736765328] [2022-11-20 10:40:50,759 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:40:50,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:50,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:40:50,760 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:40:50,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:40:50,910 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:40:50,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-20 10:40:50,911 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:40:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:40:51,132 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:40:51,132 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:40:51,133 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 10:40:51,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-20 10:40:51,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 10:40:51,339 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2022-11-20 10:40:51,343 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:40:51,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:40:51 BoogieIcfgContainer [2022-11-20 10:40:51,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:40:51,446 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:40:51,446 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:40:51,446 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:40:51,447 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:40:44" (3/4) ... [2022-11-20 10:40:51,448 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 10:40:51,533 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:40:51,533 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:40:51,534 INFO L158 Benchmark]: Toolchain (without parser) took 7311.46ms. Allocated memory is still 159.4MB. Free memory was 115.0MB in the beginning and 55.3MB in the end (delta: 59.7MB). Peak memory consumption was 61.2MB. Max. memory is 16.1GB. [2022-11-20 10:40:51,534 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory was 95.5MB in the beginning and 95.4MB in the end (delta: 153.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:40:51,534 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.60ms. Allocated memory is still 159.4MB. Free memory was 115.0MB in the beginning and 104.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:40:51,535 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.65ms. Allocated memory is still 159.4MB. Free memory was 104.7MB in the beginning and 103.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:40:51,535 INFO L158 Benchmark]: Boogie Preprocessor took 36.34ms. Allocated memory is still 159.4MB. Free memory was 103.4MB in the beginning and 102.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:40:51,535 INFO L158 Benchmark]: RCFGBuilder took 324.25ms. Allocated memory is still 159.4MB. Free memory was 102.2MB in the beginning and 91.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:40:51,536 INFO L158 Benchmark]: TraceAbstraction took 6539.22ms. Allocated memory is still 159.4MB. Free memory was 90.9MB in the beginning and 63.7MB in the end (delta: 27.2MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2022-11-20 10:40:51,536 INFO L158 Benchmark]: Witness Printer took 87.49ms. Allocated memory is still 159.4MB. Free memory was 63.7MB in the beginning and 55.3MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 10:40:51,538 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory was 95.5MB in the beginning and 95.4MB in the end (delta: 153.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.60ms. Allocated memory is still 159.4MB. Free memory was 115.0MB in the beginning and 104.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.65ms. Allocated memory is still 159.4MB. Free memory was 104.7MB in the beginning and 103.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.34ms. Allocated memory is still 159.4MB. Free memory was 103.4MB in the beginning and 102.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 324.25ms. Allocated memory is still 159.4MB. Free memory was 102.2MB in the beginning and 91.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6539.22ms. Allocated memory is still 159.4MB. Free memory was 90.9MB in the beginning and 63.7MB in the end (delta: 27.2MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. * Witness Printer took 87.49ms. Allocated memory is still 159.4MB. Free memory was 63.7MB in the beginning and 55.3MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) VAL [\old(cond)=1, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L29] RET assume_abort_if_not(x1 >= 0) VAL [counter=0, x1=21, x2=1] [L30] CALL assume_abort_if_not(x2 != 0) VAL [\old(cond)=1, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L30] RET assume_abort_if_not(x2 != 0) VAL [counter=0, x1=21, x2=1] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0, x1=21, x2=1, y1=0, y2=0, y3=21] [L36] EXPR counter++ VAL [counter=1, counter++=0, x1=21, x2=1, y1=0, y2=0, y3=21] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=1, x1=21, x2=1, y1=0, y2=0, y3=21] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=1, x1=21, x2=1, y1=0, y2=0, y3=21] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=1, x1=21, x2=1, y1=1, y2=0, y3=20] [L36] EXPR counter++ VAL [counter=2, counter++=1, x1=21, x2=1, y1=1, y2=0, y3=20] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=2] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=2, x1=21, x2=1, y1=1, y2=0, y3=20] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=2, x1=21, x2=1, y1=1, y2=0, y3=20] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=2, x1=21, x2=1, y1=2, y2=0, y3=19] [L36] EXPR counter++ VAL [counter=3, counter++=2, x1=21, x2=1, y1=2, y2=0, y3=19] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=3] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=3, x1=21, x2=1, y1=2, y2=0, y3=19] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=3, x1=21, x2=1, y1=2, y2=0, y3=19] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=3, x1=21, x2=1, y1=3, y2=0, y3=18] [L36] EXPR counter++ VAL [counter=4, counter++=3, x1=21, x2=1, y1=3, y2=0, y3=18] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=4] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=4, x1=21, x2=1, y1=3, y2=0, y3=18] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=4, x1=21, x2=1, y1=3, y2=0, y3=18] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=4, x1=21, x2=1, y1=4, y2=0, y3=17] [L36] EXPR counter++ VAL [counter=5, counter++=4, x1=21, x2=1, y1=4, y2=0, y3=17] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=5] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=5, x1=21, x2=1, y1=4, y2=0, y3=17] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=5, x1=21, x2=1, y1=4, y2=0, y3=17] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=5, x1=21, x2=1, y1=5, y2=0, y3=16] [L36] EXPR counter++ VAL [counter=6, counter++=5, x1=21, x2=1, y1=5, y2=0, y3=16] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=6] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=6, x1=21, x2=1, y1=5, y2=0, y3=16] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=6, x1=21, x2=1, y1=5, y2=0, y3=16] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=6, x1=21, x2=1, y1=6, y2=0, y3=15] [L36] EXPR counter++ VAL [counter=7, counter++=6, x1=21, x2=1, y1=6, y2=0, y3=15] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=7] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=7, x1=21, x2=1, y1=6, y2=0, y3=15] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=7, x1=21, x2=1, y1=6, y2=0, y3=15] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=7, x1=21, x2=1, y1=7, y2=0, y3=14] [L36] EXPR counter++ VAL [counter=8, counter++=7, x1=21, x2=1, y1=7, y2=0, y3=14] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=8] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=8, x1=21, x2=1, y1=7, y2=0, y3=14] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=8, x1=21, x2=1, y1=7, y2=0, y3=14] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=8, x1=21, x2=1, y1=8, y2=0, y3=13] [L36] EXPR counter++ VAL [counter=9, counter++=8, x1=21, x2=1, y1=8, y2=0, y3=13] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=9] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=9, x1=21, x2=1, y1=8, y2=0, y3=13] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=9, x1=21, x2=1, y1=8, y2=0, y3=13] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=9, x1=21, x2=1, y1=9, y2=0, y3=12] [L36] EXPR counter++ VAL [counter=10, counter++=9, x1=21, x2=1, y1=9, y2=0, y3=12] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=10] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=10, x1=21, x2=1, y1=9, y2=0, y3=12] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=10, x1=21, x2=1, y1=9, y2=0, y3=12] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=10, x1=21, x2=1, y1=10, y2=0, y3=11] [L36] EXPR counter++ VAL [counter=11, counter++=10, x1=21, x2=1, y1=10, y2=0, y3=11] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=11] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=11] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=11, x1=21, x2=1, y1=10, y2=0, y3=11] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=11, x1=21, x2=1, y1=10, y2=0, y3=11] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=11, x1=21, x2=1, y1=11, y2=0, y3=10] [L36] EXPR counter++ VAL [counter=12, counter++=11, x1=21, x2=1, y1=11, y2=0, y3=10] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=12] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=12] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=12, x1=21, x2=1, y1=11, y2=0, y3=10] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=12, x1=21, x2=1, y1=11, y2=0, y3=10] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=12, x1=21, x2=1, y1=12, y2=0, y3=9] [L36] EXPR counter++ VAL [counter=13, counter++=12, x1=21, x2=1, y1=12, y2=0, y3=9] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=13] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=13] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=13, x1=21, x2=1, y1=12, y2=0, y3=9] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=13, x1=21, x2=1, y1=12, y2=0, y3=9] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=13, x1=21, x2=1, y1=13, y2=0, y3=8] [L36] EXPR counter++ VAL [counter=14, counter++=13, x1=21, x2=1, y1=13, y2=0, y3=8] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=14] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=14] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=14, x1=21, x2=1, y1=13, y2=0, y3=8] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=14, x1=21, x2=1, y1=13, y2=0, y3=8] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=14, x1=21, x2=1, y1=14, y2=0, y3=7] [L36] EXPR counter++ VAL [counter=15, counter++=14, x1=21, x2=1, y1=14, y2=0, y3=7] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=15] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=15] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=15, x1=21, x2=1, y1=14, y2=0, y3=7] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=15, x1=21, x2=1, y1=14, y2=0, y3=7] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=15, x1=21, x2=1, y1=15, y2=0, y3=6] [L36] EXPR counter++ VAL [counter=16, counter++=15, x1=21, x2=1, y1=15, y2=0, y3=6] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=16] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=16] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=16, x1=21, x2=1, y1=15, y2=0, y3=6] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=16, x1=21, x2=1, y1=15, y2=0, y3=6] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=16, x1=21, x2=1, y1=16, y2=0, y3=5] [L36] EXPR counter++ VAL [counter=17, counter++=16, x1=21, x2=1, y1=16, y2=0, y3=5] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=17] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=17] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=17, x1=21, x2=1, y1=16, y2=0, y3=5] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=17, x1=21, x2=1, y1=16, y2=0, y3=5] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=17, x1=21, x2=1, y1=17, y2=0, y3=4] [L36] EXPR counter++ VAL [counter=18, counter++=17, x1=21, x2=1, y1=17, y2=0, y3=4] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=18] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=18] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=18, x1=21, x2=1, y1=17, y2=0, y3=4] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=18, x1=21, x2=1, y1=17, y2=0, y3=4] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=18, x1=21, x2=1, y1=18, y2=0, y3=3] [L36] EXPR counter++ VAL [counter=19, counter++=18, x1=21, x2=1, y1=18, y2=0, y3=3] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=19] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=19] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=19, x1=21, x2=1, y1=18, y2=0, y3=3] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=19, x1=21, x2=1, y1=18, y2=0, y3=3] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=19, x1=21, x2=1, y1=19, y2=0, y3=2] [L36] EXPR counter++ VAL [counter=20, counter++=19, x1=21, x2=1, y1=19, y2=0, y3=2] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=20] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=20] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=20, x1=21, x2=1, y1=19, y2=0, y3=2] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=20, x1=21, x2=1, y1=19, y2=0, y3=2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=20, x1=21, x2=1, y1=20, y2=0, y3=1] [L36] EXPR counter++ VAL [counter=21, counter++=20, x1=21, x2=1, y1=20, y2=0, y3=1] [L36] COND FALSE !(counter++<20) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) VAL [\old(cond)=0, counter=21] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=21] [L18] reach_error() VAL [\old(cond)=0, cond=0, counter=21] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.3s, OverallIterations: 8, TraceHistogramMax: 21, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 379 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 377 mSDsluCounter, 711 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 533 mSDsCounter, 105 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 414 IncrementalHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 105 mSolverCounterUnsat, 178 mSDtfsCounter, 414 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 516 GetRequests, 415 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196occurred in iteration=7, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 490 NumberOfCodeBlocks, 490 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 479 ConstructedInterpolants, 0 QuantifiedInterpolants, 1203 SizeOfPredicates, 24 NumberOfNonLiveVariables, 835 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 307/1086 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-20 10:40:51,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6615a404-8cfd-494e-b6db-601fef807820/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE