./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa --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 b2a54f54b02d2bb65a6f46eeae11edba1907f4f082d2aaa313102e422e7e6122 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:43:34,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:43:34,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:43:34,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:43:34,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:43:34,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:43:34,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:43:34,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:43:34,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:43:34,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:43:34,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:43:34,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:43:34,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:43:34,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:43:34,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:43:34,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:43:34,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:43:34,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:43:34,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:43:34,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:43:34,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:43:34,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:43:34,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:43:34,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:43:34,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:43:34,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:43:34,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:43:34,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:43:34,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:43:34,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:43:34,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:43:34,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:43:34,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:43:34,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:43:34,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:43:34,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:43:34,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:43:34,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:43:34,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:43:34,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:43:34,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:43:34,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:43:34,546 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:43:34,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:43:34,546 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:43:34,546 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:43:34,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:43:34,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:43:34,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:43:34,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:43:34,548 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:43:34,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:43:34,548 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:43:34,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:43:34,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:43:34,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:43:34,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:43:34,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:43:34,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:43:34,549 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:43:34,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:43:34,549 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:43:34,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:43:34,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:43:34,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:43:34,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:43:34,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:43:34,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:43:34,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:43:34,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:43:34,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:43:34,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:43:34,550 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:43:34,551 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:43:34,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:43:34,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:43:34,551 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_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2a54f54b02d2bb65a6f46eeae11edba1907f4f082d2aaa313102e422e7e6122 [2021-12-06 17:43:34,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:43:34,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:43:34,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:43:34,751 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:43:34,752 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:43:34,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c [2021-12-06 17:43:34,794 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/data/46c6041de/3506e5b7158d461781e82d42d6f78743/FLAG194d56e5a [2021-12-06 17:43:35,180 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:43:35,181 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c [2021-12-06 17:43:35,186 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/data/46c6041de/3506e5b7158d461781e82d42d6f78743/FLAG194d56e5a [2021-12-06 17:43:35,196 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/data/46c6041de/3506e5b7158d461781e82d42d6f78743 [2021-12-06 17:43:35,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:43:35,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:43:35,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:43:35,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:43:35,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:43:35,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:43:35" (1/1) ... [2021-12-06 17:43:35,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af1af37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:35, skipping insertion in model container [2021-12-06 17:43:35,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:43:35" (1/1) ... [2021-12-06 17:43:35,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:43:35,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:43:35,326 WARN L230 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_eb585070-b00b-41ce-afdc-d51a25679fe1/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c[458,471] [2021-12-06 17:43:35,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:43:35,341 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:43:35,350 WARN L230 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_eb585070-b00b-41ce-afdc-d51a25679fe1/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c[458,471] [2021-12-06 17:43:35,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:43:35,363 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:43:35,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:35 WrapperNode [2021-12-06 17:43:35,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:43:35,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:43:35,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:43:35,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:43:35,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:35" (1/1) ... [2021-12-06 17:43:35,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:35" (1/1) ... [2021-12-06 17:43:35,394 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2021-12-06 17:43:35,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:43:35,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:43:35,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:43:35,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:43:35,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:35" (1/1) ... [2021-12-06 17:43:35,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:35" (1/1) ... [2021-12-06 17:43:35,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:35" (1/1) ... [2021-12-06 17:43:35,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:35" (1/1) ... [2021-12-06 17:43:35,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:35" (1/1) ... [2021-12-06 17:43:35,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:35" (1/1) ... [2021-12-06 17:43:35,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:35" (1/1) ... [2021-12-06 17:43:35,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:43:35,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:43:35,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:43:35,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:43:35,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:35" (1/1) ... [2021-12-06 17:43:35,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:43:35,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:43:35,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:43:35,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:43:35,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:43:35,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:43:35,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:43:35,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:43:35,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 17:43:35,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 17:43:35,525 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:43:35,526 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:43:35,602 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:43:35,608 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:43:35,608 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 17:43:35,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:43:35 BoogieIcfgContainer [2021-12-06 17:43:35,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:43:35,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:43:35,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:43:35,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:43:35,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:43:35" (1/3) ... [2021-12-06 17:43:35,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6268bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:43:35, skipping insertion in model container [2021-12-06 17:43:35,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:35" (2/3) ... [2021-12-06 17:43:35,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6268bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:43:35, skipping insertion in model container [2021-12-06 17:43:35,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:43:35" (3/3) ... [2021-12-06 17:43:35,618 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound5.c [2021-12-06 17:43:35,624 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:43:35,624 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:43:35,673 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:43:35,680 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:43:35,681 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:43:35,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:43:35,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 17:43:35,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:43:35,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:43:35,703 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:43:35,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:43:35,708 INFO L85 PathProgramCache]: Analyzing trace with hash -589436290, now seen corresponding path program 1 times [2021-12-06 17:43:35,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:43:35,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162403502] [2021-12-06 17:43:35,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:35,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:43:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:43:35,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:43:35,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162403502] [2021-12-06 17:43:35,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162403502] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:43:35,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:43:35,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:43:35,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126081444] [2021-12-06 17:43:35,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:43:35,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:43:35,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:43:35,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:43:35,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:43:35,870 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:43:35,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:43:35,889 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2021-12-06 17:43:35,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:43:35,891 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 17:43:35,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:43:35,897 INFO L225 Difference]: With dead ends: 35 [2021-12-06 17:43:35,897 INFO L226 Difference]: Without dead ends: 15 [2021-12-06 17:43:35,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:43:35,904 INFO L933 BasicCegarLoop]: 21 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, 21 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 [2021-12-06 17:43:35,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:43:35,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-06 17:43:35,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-12-06 17:43:35,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:43:35,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-12-06 17:43:35,934 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2021-12-06 17:43:35,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:43:35,934 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-12-06 17:43:35,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:43:35,935 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-12-06 17:43:35,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 17:43:35,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:43:35,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:43:35,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:43:35,936 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:43:35,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:43:35,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1187358532, now seen corresponding path program 1 times [2021-12-06 17:43:35,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:43:35,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920245496] [2021-12-06 17:43:35,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:35,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:43:35,953 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:43:35,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [385193009] [2021-12-06 17:43:35,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:35,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:43:35,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:43:35,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:43:35,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:43:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:36,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:43:36,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:43:36,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:43:36,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:43:36,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:43:36,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920245496] [2021-12-06 17:43:36,100 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:43:36,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385193009] [2021-12-06 17:43:36,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385193009] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:43:36,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:43:36,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:43:36,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390980168] [2021-12-06 17:43:36,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:43:36,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:43:36,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:43:36,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:43:36,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:43:36,104 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:43:36,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:43:36,150 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-12-06 17:43:36,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:43:36,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 17:43:36,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:43:36,152 INFO L225 Difference]: With dead ends: 26 [2021-12-06 17:43:36,152 INFO L226 Difference]: Without dead ends: 22 [2021-12-06 17:43:36,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:43:36,154 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:43:36,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 51 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:43:36,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-06 17:43:36,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-12-06 17:43:36,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 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) [2021-12-06 17:43:36,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-12-06 17:43:36,162 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2021-12-06 17:43:36,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:43:36,163 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-12-06 17:43:36,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:43:36,163 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-12-06 17:43:36,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 17:43:36,164 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:43:36,164 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:43:36,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:43:36,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:43:36,366 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:43:36,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:43:36,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1781398469, now seen corresponding path program 1 times [2021-12-06 17:43:36,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:43:36,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152009097] [2021-12-06 17:43:36,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:36,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:43:36,415 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:43:36,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1645609986] [2021-12-06 17:43:36,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:36,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:43:36,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:43:36,420 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:43:36,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 17:43:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:36,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 17:43:36,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:43:36,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:43:36,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:43:36,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 17:43:36,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:43:36,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152009097] [2021-12-06 17:43:36,892 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:43:36,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645609986] [2021-12-06 17:43:36,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645609986] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 17:43:36,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:43:36,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2021-12-06 17:43:36,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638700263] [2021-12-06 17:43:36,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:43:36,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:43:36,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:43:36,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:43:36,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:43:36,894 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:43:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:43:36,927 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2021-12-06 17:43:36,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:43:36,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-06 17:43:36,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:43:36,928 INFO L225 Difference]: With dead ends: 28 [2021-12-06 17:43:36,928 INFO L226 Difference]: Without dead ends: 23 [2021-12-06 17:43:36,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:43:36,929 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:43:36,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 44 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:43:36,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-06 17:43:36,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-06 17:43:36,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:43:36,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-12-06 17:43:36,933 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2021-12-06 17:43:36,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:43:36,934 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-12-06 17:43:36,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:43:36,934 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-12-06 17:43:36,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 17:43:36,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:43:36,934 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:43:36,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 17:43:37,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-06 17:43:37,137 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:43:37,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:43:37,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1711372296, now seen corresponding path program 1 times [2021-12-06 17:43:37,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:43:37,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492059566] [2021-12-06 17:43:37,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:37,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:43:37,167 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:43:37,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057617922] [2021-12-06 17:43:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:37,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:43:37,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:43:37,172 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:43:37,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 17:43:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:37,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 17:43:37,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:43:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 17:43:37,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:43:37,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:43:37,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492059566] [2021-12-06 17:43:37,458 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:43:37,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057617922] [2021-12-06 17:43:37,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057617922] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:43:37,459 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:43:37,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-12-06 17:43:37,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24625365] [2021-12-06 17:43:37,459 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:43:37,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:43:37,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:43:37,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:43:37,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:43:37,460 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:43:37,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:43:37,500 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-12-06 17:43:37,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:43:37,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-12-06 17:43:37,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:43:37,501 INFO L225 Difference]: With dead ends: 31 [2021-12-06 17:43:37,501 INFO L226 Difference]: Without dead ends: 26 [2021-12-06 17:43:37,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:43:37,502 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:43:37,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 81 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:43:37,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-06 17:43:37,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-06 17:43:37,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 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) [2021-12-06 17:43:37,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-12-06 17:43:37,507 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 22 [2021-12-06 17:43:37,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:43:37,507 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-12-06 17:43:37,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:43:37,508 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-12-06 17:43:37,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 17:43:37,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:43:37,509 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:43:37,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 17:43:37,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:43:37,711 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:43:37,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:43:37,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1075497887, now seen corresponding path program 2 times [2021-12-06 17:43:37,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:43:37,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683359909] [2021-12-06 17:43:37,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:37,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:43:37,739 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:43:37,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218854414] [2021-12-06 17:43:37,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:43:37,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:43:37,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:43:37,744 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:43:37,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 17:43:37,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:43:37,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:43:37,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 17:43:37,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:43:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 17:43:37,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:43:38,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:43:38,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683359909] [2021-12-06 17:43:38,147 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:43:38,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218854414] [2021-12-06 17:43:38,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218854414] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:43:38,148 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:43:38,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-12-06 17:43:38,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388170792] [2021-12-06 17:43:38,148 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:43:38,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:43:38,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:43:38,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:43:38,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:43:38,149 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:43:38,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:43:38,205 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-12-06 17:43:38,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:43:38,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2021-12-06 17:43:38,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:43:38,206 INFO L225 Difference]: With dead ends: 34 [2021-12-06 17:43:38,206 INFO L226 Difference]: Without dead ends: 29 [2021-12-06 17:43:38,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:43:38,207 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 2 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:43:38,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 109 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:43:38,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-06 17:43:38,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-06 17:43:38,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 17:43:38,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-12-06 17:43:38,215 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29 [2021-12-06 17:43:38,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:43:38,216 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-12-06 17:43:38,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:43:38,216 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-12-06 17:43:38,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 17:43:38,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:43:38,217 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:43:38,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 17:43:38,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:43:38,419 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:43:38,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:43:38,419 INFO L85 PathProgramCache]: Analyzing trace with hash 817917912, now seen corresponding path program 3 times [2021-12-06 17:43:38,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:43:38,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271896180] [2021-12-06 17:43:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:38,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:43:38,437 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:43:38,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824561620] [2021-12-06 17:43:38,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:43:38,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:43:38,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:43:38,439 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:43:38,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 17:43:38,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 17:43:38,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:43:38,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 17:43:38,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:43:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 17:43:38,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:43:38,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:43:38,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271896180] [2021-12-06 17:43:38,829 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:43:38,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824561620] [2021-12-06 17:43:38,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824561620] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:43:38,830 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:43:38,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-12-06 17:43:38,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406690816] [2021-12-06 17:43:38,830 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:43:38,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:43:38,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:43:38,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:43:38,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:43:38,831 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 17:43:38,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:43:38,890 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2021-12-06 17:43:38,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:43:38,890 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2021-12-06 17:43:38,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:43:38,891 INFO L225 Difference]: With dead ends: 37 [2021-12-06 17:43:38,891 INFO L226 Difference]: Without dead ends: 32 [2021-12-06 17:43:38,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:43:38,892 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:43:38,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 141 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:43:38,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-06 17:43:38,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-06 17:43:38,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 17:43:38,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-12-06 17:43:38,897 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 36 [2021-12-06 17:43:38,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:43:38,897 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-12-06 17:43:38,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 17:43:38,897 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-12-06 17:43:38,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 17:43:38,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:43:38,898 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:43:38,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 17:43:39,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 17:43:39,100 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:43:39,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:43:39,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1384689793, now seen corresponding path program 4 times [2021-12-06 17:43:39,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:43:39,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418025342] [2021-12-06 17:43:39,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:39,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:43:39,127 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:43:39,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990106637] [2021-12-06 17:43:39,128 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 17:43:39,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:43:39,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:43:39,130 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:43:39,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 17:43:39,228 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 17:43:39,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:43:39,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 17:43:39,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:43:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 17:43:39,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:43:39,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:43:39,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418025342] [2021-12-06 17:43:39,437 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:43:39,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990106637] [2021-12-06 17:43:39,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990106637] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:43:39,437 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:43:39,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-12-06 17:43:39,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145059136] [2021-12-06 17:43:39,437 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:43:39,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:43:39,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:43:39,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:43:39,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:43:39,438 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 17:43:39,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:43:39,510 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-12-06 17:43:39,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:43:39,510 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 43 [2021-12-06 17:43:39,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:43:39,511 INFO L225 Difference]: With dead ends: 40 [2021-12-06 17:43:39,511 INFO L226 Difference]: Without dead ends: 35 [2021-12-06 17:43:39,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:43:39,512 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:43:39,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 177 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:43:39,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-06 17:43:39,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-12-06 17:43:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 17:43:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-12-06 17:43:39,517 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 43 [2021-12-06 17:43:39,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:43:39,518 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-12-06 17:43:39,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 17:43:39,518 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-12-06 17:43:39,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-06 17:43:39,519 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:43:39,519 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:43:39,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-06 17:43:39,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:43:39,721 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:43:39,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:43:39,722 INFO L85 PathProgramCache]: Analyzing trace with hash -23130184, now seen corresponding path program 5 times [2021-12-06 17:43:39,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:43:39,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483167809] [2021-12-06 17:43:39,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:39,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:43:39,749 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:43:39,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507298430] [2021-12-06 17:43:39,750 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 17:43:39,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:43:39,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:43:39,752 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:43:39,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 17:43:39,813 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-12-06 17:43:39,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:43:39,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 17:43:39,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:43:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 17:43:39,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:43:40,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:43:40,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483167809] [2021-12-06 17:43:40,046 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:43:40,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507298430] [2021-12-06 17:43:40,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507298430] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:43:40,047 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:43:40,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-12-06 17:43:40,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135269554] [2021-12-06 17:43:40,047 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:43:40,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 17:43:40,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:43:40,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 17:43:40,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:43:40,048 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 17:43:40,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:43:40,141 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-12-06 17:43:40,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:43:40,141 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 50 [2021-12-06 17:43:40,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:43:40,142 INFO L225 Difference]: With dead ends: 43 [2021-12-06 17:43:40,142 INFO L226 Difference]: Without dead ends: 38 [2021-12-06 17:43:40,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:43:40,143 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 2 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:43:40,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 217 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:43:40,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-06 17:43:40,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-12-06 17:43:40,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-06 17:43:40,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2021-12-06 17:43:40,151 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 50 [2021-12-06 17:43:40,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:43:40,152 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2021-12-06 17:43:40,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 17:43:40,152 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2021-12-06 17:43:40,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 17:43:40,153 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:43:40,153 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:43:40,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 17:43:40,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:43:40,355 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:43:40,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:43:40,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1898941279, now seen corresponding path program 6 times [2021-12-06 17:43:40,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:43:40,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127744132] [2021-12-06 17:43:40,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:40,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:43:40,374 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:43:40,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927251861] [2021-12-06 17:43:40,375 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 17:43:40,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:43:40,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:43:40,377 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:43:40,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 17:43:40,494 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-06 17:43:40,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:43:40,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 17:43:40,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:43:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-06 17:43:40,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:43:40,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:43:40,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127744132] [2021-12-06 17:43:40,658 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:43:40,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927251861] [2021-12-06 17:43:40,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927251861] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:43:40,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:43:40,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:43:40,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900185685] [2021-12-06 17:43:40,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:43:40,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:43:40,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:43:40,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:43:40,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:43:40,660 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-06 17:43:40,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:43:40,768 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-12-06 17:43:40,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:43:40,768 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 57 [2021-12-06 17:43:40,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:43:40,769 INFO L225 Difference]: With dead ends: 42 [2021-12-06 17:43:40,769 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 17:43:40,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:43:40,770 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 5 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:43:40,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 63 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:43:40,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 17:43:40,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 17:43:40,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:43:40,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 17:43:40,770 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2021-12-06 17:43:40,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:43:40,771 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 17:43:40,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-06 17:43:40,771 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 17:43:40,771 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 17:43:40,773 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 17:43:40,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 17:43:40,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:43:40,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 17:43:41,303 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-06 17:43:41,303 INFO L854 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~k~0#1| 5)) (.cse2 (= (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 4 |ULTIMATE.start_main_~x~0#1|)))) (or (and .cse0 (<= |ULTIMATE.start_main_~c~0#1| 5) (= 5 |ULTIMATE.start_main_~y~0#1|) (< 4 |ULTIMATE.start_main_~k~0#1|) .cse1 (<= 5 |ULTIMATE.start_main_~c~0#1|) .cse2) (and .cse0 (= 2 |ULTIMATE.start_main_~y~0#1|) (< 1 |ULTIMATE.start_main_~k~0#1|) .cse1 .cse2 (= 2 |ULTIMATE.start_main_~c~0#1|)) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) .cse0 (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0) .cse1 .cse2) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 4) (< 3 |ULTIMATE.start_main_~k~0#1|) .cse1 (= |ULTIMATE.start_main_~c~0#1| 4) .cse2) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| 1) .cse1 (= |ULTIMATE.start_main_~y~0#1| 1) (< 0 |ULTIMATE.start_main_~k~0#1|) .cse2) (and .cse0 (= 3 |ULTIMATE.start_main_~y~0#1|) .cse1 (< 2 |ULTIMATE.start_main_~k~0#1|) (= 3 |ULTIMATE.start_main_~c~0#1|) .cse2))) [2021-12-06 17:43:41,303 INFO L854 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (let ((.cse0 (= (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 4 |ULTIMATE.start_main_~x~0#1|)))) (or (and (<= |ULTIMATE.start_main_~k~0#1| 1) (<= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) (< 0 |ULTIMATE.start_main_~k~0#1|) .cse0) (and (<= |ULTIMATE.start_main_~c~0#1| 5) (= 5 |ULTIMATE.start_main_~y~0#1|) (< 4 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 5) .cse0) (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) (and (<= |ULTIMATE.start_main_~k~0#1| 2) (= 2 |ULTIMATE.start_main_~y~0#1|) (< 1 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2) .cse0) (and (= 3 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 3) (< 2 |ULTIMATE.start_main_~k~0#1|) .cse0 (<= |ULTIMATE.start_main_~c~0#1| 3)) (and (<= |ULTIMATE.start_main_~c~0#1| 4) (= |ULTIMATE.start_main_~y~0#1| 4) (<= |ULTIMATE.start_main_~k~0#1| 4) (< 3 |ULTIMATE.start_main_~k~0#1|) .cse0))) [2021-12-06 17:43:41,303 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-12-06 17:43:41,303 INFO L858 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-12-06 17:43:41,303 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-06 17:43:41,303 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-06 17:43:41,303 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-06 17:43:41,303 INFO L854 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~k~0#1| 5)) (.cse2 (= (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 4 |ULTIMATE.start_main_~x~0#1|)))) (or (and .cse0 (<= |ULTIMATE.start_main_~c~0#1| 5) (= 5 |ULTIMATE.start_main_~y~0#1|) (< 4 |ULTIMATE.start_main_~k~0#1|) .cse1 (<= 5 |ULTIMATE.start_main_~c~0#1|) .cse2) (and .cse0 (= 2 |ULTIMATE.start_main_~y~0#1|) (< 1 |ULTIMATE.start_main_~k~0#1|) .cse1 .cse2 (= 2 |ULTIMATE.start_main_~c~0#1|)) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) .cse0 (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0) .cse1 .cse2) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 4) (< 3 |ULTIMATE.start_main_~k~0#1|) .cse1 (= |ULTIMATE.start_main_~c~0#1| 4) .cse2) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| 1) .cse1 (= |ULTIMATE.start_main_~y~0#1| 1) (< 0 |ULTIMATE.start_main_~k~0#1|) .cse2) (and .cse0 (= 3 |ULTIMATE.start_main_~y~0#1|) .cse1 (< 2 |ULTIMATE.start_main_~k~0#1|) (= 3 |ULTIMATE.start_main_~c~0#1|) .cse2))) [2021-12-06 17:43:41,304 INFO L858 garLoopResultBuilder]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2021-12-06 17:43:41,304 INFO L861 garLoopResultBuilder]: At program point L39(lines 17 40) the Hoare annotation is: true [2021-12-06 17:43:41,304 INFO L858 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-12-06 17:43:41,304 INFO L854 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (= (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 4 |ULTIMATE.start_main_~x~0#1|)) [2021-12-06 17:43:41,304 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2021-12-06 17:43:41,304 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-12-06 17:43:41,304 INFO L858 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-12-06 17:43:41,304 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2021-12-06 17:43:41,304 INFO L858 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2021-12-06 17:43:41,304 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-12-06 17:43:41,306 INFO L732 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2021-12-06 17:43:41,307 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 17:43:41,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:43:41 BoogieIcfgContainer [2021-12-06 17:43:41,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 17:43:41,321 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 17:43:41,321 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 17:43:41,321 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 17:43:41,321 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:43:35" (3/4) ... [2021-12-06 17:43:41,323 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 17:43:41,327 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-06 17:43:41,330 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-12-06 17:43:41,330 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-06 17:43:41,330 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 17:43:41,330 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 17:43:41,352 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 17:43:41,352 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 17:43:41,352 INFO L158 Benchmark]: Toolchain (without parser) took 6153.69ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 84.1MB in the beginning and 101.1MB in the end (delta: -17.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2021-12-06 17:43:41,353 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 100.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:43:41,353 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.30ms. Allocated memory is still 121.6MB. Free memory was 83.9MB in the beginning and 96.6MB in the end (delta: -12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 17:43:41,353 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.06ms. Allocated memory is still 121.6MB. Free memory was 96.6MB in the beginning and 95.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:43:41,353 INFO L158 Benchmark]: Boogie Preprocessor took 18.43ms. Allocated memory is still 121.6MB. Free memory was 95.1MB in the beginning and 94.2MB in the end (delta: 914.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:43:41,354 INFO L158 Benchmark]: RCFGBuilder took 195.98ms. Allocated memory is still 121.6MB. Free memory was 94.2MB in the beginning and 85.1MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 17:43:41,354 INFO L158 Benchmark]: TraceAbstraction took 5708.18ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 84.6MB in the beginning and 104.3MB in the end (delta: -19.7MB). Peak memory consumption was 70.3MB. Max. memory is 16.1GB. [2021-12-06 17:43:41,354 INFO L158 Benchmark]: Witness Printer took 31.49ms. Allocated memory is still 146.8MB. Free memory was 104.3MB in the beginning and 101.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:43:41,356 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 100.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 164.30ms. Allocated memory is still 121.6MB. Free memory was 83.9MB in the beginning and 96.6MB in the end (delta: -12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.06ms. Allocated memory is still 121.6MB. Free memory was 96.6MB in the beginning and 95.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.43ms. Allocated memory is still 121.6MB. Free memory was 95.1MB in the beginning and 94.2MB in the end (delta: 914.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 195.98ms. Allocated memory is still 121.6MB. Free memory was 94.2MB in the beginning and 85.1MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5708.18ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 84.6MB in the beginning and 104.3MB in the end (delta: -19.7MB). Peak memory consumption was 70.3MB. Max. memory is 16.1GB. * Witness Printer took 31.49ms. Allocated memory is still 146.8MB. Free memory was 104.3MB in the beginning and 101.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 9, TraceHistogramMax: 8, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 904 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 717 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 470 IncrementalHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 187 mSDtfsCounter, 470 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 362 GetRequests, 270 SyntacticMatches, 6 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=8, InterpolantAutomatonStates: 67, 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 24 PreInvPairs, 45 NumberOfFragments, 617 HoareAnnotationTreeSize, 24 FomulaSimplifications, 84 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 271 NumberOfCodeBlocks, 269 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 277 ConstructedInterpolants, 0 QuantifiedInterpolants, 1101 SizeOfPredicates, 14 NumberOfNonLiveVariables, 789 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 347/454 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && c <= 5) && 5 == y) && 4 < k) && k <= 5) && 5 <= c) && 2 * (y * y * y) + y * y * y * y + y * y == 4 * x) || (((((cond == 1 && 2 == y) && 1 < k) && k <= 5) && 2 * (y * y * y) + y * y * y * y + y * y == 4 * x) && 2 == c)) || (((((0 <= k && cond == 1) && c == 0) && y == 0) && k <= 5) && 2 * (y * y * y) + y * y * y * y + y * y == 4 * x)) || (((((cond == 1 && y == 4) && 3 < k) && k <= 5) && c == 4) && 2 * (y * y * y) + y * y * y * y + y * y == 4 * x)) || (((((cond == 1 && c == 1) && k <= 5) && y == 1) && 0 < k) && 2 * (y * y * y) + y * y * y * y + y * y == 4 * x)) || (((((cond == 1 && 3 == y) && k <= 5) && 2 < k) && 3 == c) && 2 * (y * y * y) + y * y * y * y + y * y == 4 * x) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-06 17:43:41,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb585070-b00b-41ce-afdc-d51a25679fe1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE