./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test24-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test24-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3 --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 dac6403f37599f80fd46825f02fd0972bc86095b ......................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:09:37,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:09:37,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:09:37,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:09:37,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:09:37,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:09:37,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:09:37,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:09:37,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:09:37,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:09:37,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:09:37,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:09:37,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:09:37,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:09:37,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:09:37,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:09:37,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:09:37,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:09:37,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:09:37,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:09:37,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:09:37,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:09:37,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:09:37,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:09:37,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:09:37,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:09:37,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:09:37,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:09:37,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:09:37,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:09:37,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:09:37,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:09:37,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:09:37,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:09:37,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:09:37,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:09:37,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:09:37,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:09:37,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:09:37,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:09:37,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:09:37,469 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:09:37,523 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:09:37,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:09:37,527 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:09:37,527 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:09:37,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:09:37,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:09:37,538 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:09:37,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:09:37,539 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:09:37,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:09:37,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:09:37,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:09:37,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:09:37,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:09:37,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:09:37,542 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:09:37,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:09:37,543 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:09:37,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:09:37,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:09:37,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:09:37,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:09:37,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:09:37,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:09:37,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:09:37,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:09:37,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:09:37,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:09:37,546 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:09:37,549 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:09:37,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:09:37,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:09:37,550 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_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dac6403f37599f80fd46825f02fd0972bc86095b [2021-10-15 20:09:37,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:09:37,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:09:37,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:09:37,884 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:09:37,885 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:09:37,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/ldv-regression/test24-1.c [2021-10-15 20:09:38,000 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/data/fb27686b2/6f56e3e478134dde944763f8f38388bc/FLAG753c18945 [2021-10-15 20:09:38,566 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:09:38,568 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/sv-benchmarks/c/ldv-regression/test24-1.c [2021-10-15 20:09:38,584 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/data/fb27686b2/6f56e3e478134dde944763f8f38388bc/FLAG753c18945 [2021-10-15 20:09:38,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/data/fb27686b2/6f56e3e478134dde944763f8f38388bc [2021-10-15 20:09:38,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:09:38,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:09:38,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:09:38,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:09:38,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:09:38,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:09:38" (1/1) ... [2021-10-15 20:09:38,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d5f6cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:38, skipping insertion in model container [2021-10-15 20:09:38,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:09:38" (1/1) ... [2021-10-15 20:09:38,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:09:38,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:09:39,182 WARN L228 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_cd3f46b7-ce34-4144-bdb3-29213e1e407d/sv-benchmarks/c/ldv-regression/test24-1.c[704,717] [2021-10-15 20:09:39,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:09:39,204 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:09:39,222 WARN L228 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_cd3f46b7-ce34-4144-bdb3-29213e1e407d/sv-benchmarks/c/ldv-regression/test24-1.c[704,717] [2021-10-15 20:09:39,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:09:39,240 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:09:39,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:39 WrapperNode [2021-10-15 20:09:39,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:09:39,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:09:39,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:09:39,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:09:39,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:39" (1/1) ... [2021-10-15 20:09:39,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:39" (1/1) ... [2021-10-15 20:09:39,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:09:39,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:09:39,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:09:39,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:09:39,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:39" (1/1) ... [2021-10-15 20:09:39,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:39" (1/1) ... [2021-10-15 20:09:39,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:39" (1/1) ... [2021-10-15 20:09:39,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:39" (1/1) ... [2021-10-15 20:09:39,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:39" (1/1) ... [2021-10-15 20:09:39,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:39" (1/1) ... [2021-10-15 20:09:39,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:39" (1/1) ... [2021-10-15 20:09:39,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:09:39,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:09:39,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:09:39,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:09:39,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:39" (1/1) ... [2021-10-15 20:09:39,375 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:09:39,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:09:39,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:09:39,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:09:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:09:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:09:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 20:09:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:09:39,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:09:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 20:09:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 20:09:39,854 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:09:39,855 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-15 20:09:39,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:09:39 BoogieIcfgContainer [2021-10-15 20:09:39,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:09:39,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:09:39,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:09:39,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:09:39,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:09:38" (1/3) ... [2021-10-15 20:09:39,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ca6008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:09:39, skipping insertion in model container [2021-10-15 20:09:39,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:39" (2/3) ... [2021-10-15 20:09:39,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ca6008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:09:39, skipping insertion in model container [2021-10-15 20:09:39,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:09:39" (3/3) ... [2021-10-15 20:09:39,876 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-1.c [2021-10-15 20:09:39,882 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:09:39,883 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:09:40,013 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:09:40,021 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, mConcurrency=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 [2021-10-15 20:09:40,022 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:09:40,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 17 transitions, 34 flow [2021-10-15 20:09:40,096 INFO L129 PetriNetUnfolder]: 4/17 cut-off events. [2021-10-15 20:09:40,096 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:09:40,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 17 events. 4/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 20:09:40,099 INFO L82 GeneralOperation]: Start removeDead. Operand has 14 places, 17 transitions, 34 flow [2021-10-15 20:09:40,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 10 places, 11 transitions, 22 flow [2021-10-15 20:09:40,116 INFO L129 PetriNetUnfolder]: 2/10 cut-off events. [2021-10-15 20:09:40,117 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:09:40,117 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:09:40,118 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:09:40,119 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:09:40,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:09:40,126 INFO L82 PathProgramCache]: Analyzing trace with hash 126985497, now seen corresponding path program 1 times [2021-10-15 20:09:40,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:09:40,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917306479] [2021-10-15 20:09:40,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:09:40,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:09:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:09:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:09:40,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:09:40,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917306479] [2021-10-15 20:09:40,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917306479] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:09:40,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:09:40,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:09:40,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795552666] [2021-10-15 20:09:40,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 20:09:40,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:09:40,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 20:09:40,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 20:09:40,418 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 17 [2021-10-15 20:09:40,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 11 transitions, 22 flow. Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-10-15 20:09:40,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:09:40,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 17 [2021-10-15 20:09:40,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:09:40,439 INFO L129 PetriNetUnfolder]: 1/10 cut-off events. [2021-10-15 20:09:40,440 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:09:40,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12 conditions, 10 events. 1/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 10. Up to 2 conditions per place. [2021-10-15 20:09:40,444 INFO L132 encePairwiseOnDemand]: 16/17 looper letters, 0 selfloop transitions, 0 changer transitions 0/10 dead transitions. [2021-10-15 20:09:40,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 10 transitions, 20 flow [2021-10-15 20:09:40,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 20:09:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 20:09:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 31 transitions. [2021-10-15 20:09:40,459 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9117647058823529 [2021-10-15 20:09:40,460 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 31 transitions. [2021-10-15 20:09:40,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 31 transitions. [2021-10-15 20:09:40,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:09:40,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 31 transitions. [2021-10-15 20:09:40,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-10-15 20:09:40,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-10-15 20:09:40,476 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-10-15 20:09:40,479 INFO L186 Difference]: Start difference. First operand has 10 places, 11 transitions, 22 flow. Second operand 2 states and 31 transitions. [2021-10-15 20:09:40,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 10 transitions, 20 flow [2021-10-15 20:09:40,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 10 transitions, 20 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:09:40,487 INFO L242 Difference]: Finished difference. Result has 11 places, 10 transitions, 20 flow [2021-10-15 20:09:40,490 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=20, PETRI_PLACES=11, PETRI_TRANSITIONS=10} [2021-10-15 20:09:40,492 INFO L334 CegarLoopForPetriNet]: 10 programPoint places, 1 predicate places. [2021-10-15 20:09:40,492 INFO L470 AbstractCegarLoop]: Abstraction has has 11 places, 10 transitions, 20 flow [2021-10-15 20:09:40,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-10-15 20:09:40,493 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:09:40,494 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:09:40,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:09:40,495 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:09:40,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:09:40,498 INFO L82 PathProgramCache]: Analyzing trace with hash -564424753, now seen corresponding path program 1 times [2021-10-15 20:09:40,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:09:40,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7393506] [2021-10-15 20:09:40,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:09:40,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:09:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:09:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:09:40,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:09:40,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7393506] [2021-10-15 20:09:40,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7393506] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:09:40,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:09:40,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:09:40,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232289479] [2021-10-15 20:09:40,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:09:40,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:09:40,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:09:40,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:09:40,773 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 17 [2021-10-15 20:09:40,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 10 transitions, 20 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-10-15 20:09:40,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:09:40,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 17 [2021-10-15 20:09:40,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:09:40,876 INFO L129 PetriNetUnfolder]: 1/12 cut-off events. [2021-10-15 20:09:40,877 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:09:40,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 12 events. 1/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 21. Up to 6 conditions per place. [2021-10-15 20:09:40,878 INFO L132 encePairwiseOnDemand]: 12/17 looper letters, 5 selfloop transitions, 4 changer transitions 0/12 dead transitions. [2021-10-15 20:09:40,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 12 transitions, 42 flow [2021-10-15 20:09:40,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:09:40,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 20:09:40,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2021-10-15 20:09:40,884 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2021-10-15 20:09:40,887 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 40 transitions. [2021-10-15 20:09:40,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 40 transitions. [2021-10-15 20:09:40,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:09:40,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 40 transitions. [2021-10-15 20:09:40,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2021-10-15 20:09:40,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2021-10-15 20:09:40,897 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2021-10-15 20:09:40,897 INFO L186 Difference]: Start difference. First operand has 11 places, 10 transitions, 20 flow. Second operand 5 states and 40 transitions. [2021-10-15 20:09:40,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 12 transitions, 42 flow [2021-10-15 20:09:40,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 12 transitions, 42 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:09:40,906 INFO L242 Difference]: Finished difference. Result has 17 places, 12 transitions, 42 flow [2021-10-15 20:09:40,906 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=42, PETRI_PLACES=17, PETRI_TRANSITIONS=12} [2021-10-15 20:09:40,907 INFO L334 CegarLoopForPetriNet]: 10 programPoint places, 7 predicate places. [2021-10-15 20:09:40,907 INFO L470 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 42 flow [2021-10-15 20:09:40,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-10-15 20:09:40,908 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:09:40,908 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:09:40,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 20:09:40,909 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:09:40,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:09:40,910 INFO L82 PathProgramCache]: Analyzing trace with hash 263489748, now seen corresponding path program 1 times [2021-10-15 20:09:40,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:09:40,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137368565] [2021-10-15 20:09:40,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:09:40,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:09:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:09:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:09:41,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:09:41,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137368565] [2021-10-15 20:09:41,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137368565] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:09:41,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421438194] [2021-10-15 20:09:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:09:41,317 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:09:41,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:09:41,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:09:41,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 20:09:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:09:41,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-15 20:09:41,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:09:41,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-15 20:09:42,277 INFO L354 Elim1Store]: treesize reduction 48, result has 12.7 percent of original size [2021-10-15 20:09:42,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 44 [2021-10-15 20:09:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:09:42,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421438194] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:09:42,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:09:42,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-10-15 20:09:42,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182144168] [2021-10-15 20:09:42,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-15 20:09:42,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:09:42,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-15 20:09:42,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-15 20:09:42,353 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 17 [2021-10-15 20:09:42,355 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 42 flow. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 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) [2021-10-15 20:09:42,355 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:09:42,355 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 17 [2021-10-15 20:09:42,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:09:44,879 INFO L129 PetriNetUnfolder]: 1/10 cut-off events. [2021-10-15 20:09:44,880 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:09:44,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 10 events. 1/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2021-10-15 20:09:44,880 INFO L132 encePairwiseOnDemand]: 9/17 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2021-10-15 20:09:44,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 10 transitions, 58 flow [2021-10-15 20:09:44,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 20:09:44,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 20:09:44,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 33 transitions. [2021-10-15 20:09:44,883 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.2426470588235294 [2021-10-15 20:09:44,884 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 33 transitions. [2021-10-15 20:09:44,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 33 transitions. [2021-10-15 20:09:44,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:09:44,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 33 transitions. [2021-10-15 20:09:44,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:09:44,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 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) [2021-10-15 20:09:44,891 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 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) [2021-10-15 20:09:44,892 INFO L186 Difference]: Start difference. First operand has 17 places, 12 transitions, 42 flow. Second operand 8 states and 33 transitions. [2021-10-15 20:09:44,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 10 transitions, 58 flow [2021-10-15 20:09:44,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 10 transitions, 54 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:09:44,895 INFO L242 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2021-10-15 20:09:44,896 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2021-10-15 20:09:44,896 INFO L334 CegarLoopForPetriNet]: 10 programPoint places, 10 predicate places. [2021-10-15 20:09:44,896 INFO L470 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2021-10-15 20:09:44,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 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) [2021-10-15 20:09:44,902 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:09:44,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:09:45,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:09:45,126 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:09:45,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:09:45 BoogieIcfgContainer [2021-10-15 20:09:45,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:09:45,132 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:09:45,132 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:09:45,132 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:09:45,139 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:09:39" (3/4) ... [2021-10-15 20:09:45,143 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 20:09:45,161 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-15 20:09:45,162 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-15 20:09:45,162 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:09:45,163 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:09:45,211 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:09:45,211 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:09:45,213 INFO L168 Benchmark]: Toolchain (without parser) took 6307.82 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 64.0 MB in the beginning and 53.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:09:45,213 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 94.4 MB. Free memory is still 47.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:09:45,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.81 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 64.0 MB in the beginning and 94.0 MB in the end (delta: -30.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:09:45,215 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.37 ms. Allocated memory is still 117.4 MB. Free memory was 94.0 MB in the beginning and 92.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:09:45,216 INFO L168 Benchmark]: Boogie Preprocessor took 47.48 ms. Allocated memory is still 117.4 MB. Free memory was 92.7 MB in the beginning and 91.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:09:45,217 INFO L168 Benchmark]: RCFGBuilder took 503.89 ms. Allocated memory is still 117.4 MB. Free memory was 91.3 MB in the beginning and 81.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:09:45,217 INFO L168 Benchmark]: TraceAbstraction took 5271.12 ms. Allocated memory is still 117.4 MB. Free memory was 81.0 MB in the beginning and 55.4 MB in the end (delta: 25.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:09:45,218 INFO L168 Benchmark]: Witness Printer took 79.30 ms. Allocated memory is still 117.4 MB. Free memory was 55.4 MB in the beginning and 53.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:09:45,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 94.4 MB. Free memory is still 47.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.81 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 64.0 MB in the beginning and 94.0 MB in the end (delta: -30.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.37 ms. Allocated memory is still 117.4 MB. Free memory was 94.0 MB in the beginning and 92.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.48 ms. Allocated memory is still 117.4 MB. Free memory was 92.7 MB in the beginning and 91.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 503.89 ms. Allocated memory is still 117.4 MB. Free memory was 91.3 MB in the beginning and 81.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5271.12 ms. Allocated memory is still 117.4 MB. Free memory was 81.0 MB in the beginning and 55.4 MB in the end (delta: 25.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. * Witness Printer took 79.30 ms. Allocated memory is still 117.4 MB. Free memory was 55.4 MB in the beginning and 53.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 38]: 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 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5118.2ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 2771.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 81.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 19 SDslu, 6 SDs, 0 SdLazy, 73 SolverSat, 9 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2135.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 771.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=2, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 35.1ms SsaConstructionTime, 237.8ms SatisfiabilityAnalysisTime, 1450.4ms InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 2 QuantifiedInterpolants, 409 SizeOfPredicates, 13 NumberOfNonLiveVariables, 85 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/4 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 RESULT: Ultimate proved your program to be correct! [2021-10-15 20:09:45,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3f46b7-ce34-4144-bdb3-29213e1e407d/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...