./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/bigshot_s.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/bigshot_s.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:35:36,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:35:36,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:35:36,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:35:36,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:35:36,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:35:36,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:35:36,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:35:36,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:35:36,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:35:36,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:35:36,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:35:36,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:35:36,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:35:36,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:35:36,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:35:36,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:35:36,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:35:36,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:35:36,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:35:36,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:35:36,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:35:36,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:35:36,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:35:36,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:35:36,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:35:36,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:35:36,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:35:36,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:35:36,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:35:36,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:35:36,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:35:36,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:35:36,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:35:36,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:35:36,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:35:36,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:35:36,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:35:36,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:35:36,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:35:36,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:35:36,784 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:35:36,826 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:35:36,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:35:36,827 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:35:36,827 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:35:36,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:35:36,828 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:35:36,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:35:36,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:35:36,830 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:35:36,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:35:36,831 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:35:36,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:35:36,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:35:36,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:35:36,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:35:36,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:35:36,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:35:36,833 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:35:36,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:35:36,833 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:35:36,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:35:36,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:35:36,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:35:36,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:35:36,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:35:36,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:35:36,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:35:36,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:35:36,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:35:36,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:35:36,837 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:35:36,837 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:35:36,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:35:36,837 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_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe [2022-11-20 09:35:37,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:35:37,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:35:37,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:35:37,229 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:35:37,230 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:35:37,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/bigshot_s.i [2022-11-20 09:35:40,236 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:35:40,592 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:35:40,592 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/sv-benchmarks/c/pthread/bigshot_s.i [2022-11-20 09:35:40,614 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/data/207635b98/c01d0ea50f604181b214681d02025609/FLAG974b3826d [2022-11-20 09:35:40,639 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/data/207635b98/c01d0ea50f604181b214681d02025609 [2022-11-20 09:35:40,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:35:40,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:35:40,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:35:40,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:35:40,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:35:40,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:35:40" (1/1) ... [2022-11-20 09:35:40,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539472e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:40, skipping insertion in model container [2022-11-20 09:35:40,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:35:40" (1/1) ... [2022-11-20 09:35:40,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:35:40,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:35:41,178 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/sv-benchmarks/c/pthread/bigshot_s.i[55202,55215] [2022-11-20 09:35:41,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:35:41,212 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:35:41,256 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/sv-benchmarks/c/pthread/bigshot_s.i[55202,55215] [2022-11-20 09:35:41,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:35:41,356 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:35:41,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:41 WrapperNode [2022-11-20 09:35:41,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:35:41,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:35:41,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:35:41,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:35:41,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:41" (1/1) ... [2022-11-20 09:35:41,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:41" (1/1) ... [2022-11-20 09:35:41,422 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2022-11-20 09:35:41,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:35:41,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:35:41,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:35:41,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:35:41,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:41" (1/1) ... [2022-11-20 09:35:41,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:41" (1/1) ... [2022-11-20 09:35:41,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:41" (1/1) ... [2022-11-20 09:35:41,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:41" (1/1) ... [2022-11-20 09:35:41,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:41" (1/1) ... [2022-11-20 09:35:41,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:41" (1/1) ... [2022-11-20 09:35:41,449 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:41" (1/1) ... [2022-11-20 09:35:41,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:41" (1/1) ... [2022-11-20 09:35:41,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:35:41,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:35:41,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:35:41,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:35:41,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:41" (1/1) ... [2022-11-20 09:35:41,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:35:41,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:41,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:35:41,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:35:41,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:35:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:35:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 09:35:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:35:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 09:35:41,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 09:35:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 09:35:41,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 09:35:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:35:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:35:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:35:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:35:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:35:41,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:35:41,548 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 09:35:41,777 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:35:41,780 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:35:41,986 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:35:41,992 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:35:41,998 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 09:35:42,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:35:42 BoogieIcfgContainer [2022-11-20 09:35:42,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:35:42,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:35:42,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:35:42,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:35:42,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:35:40" (1/3) ... [2022-11-20 09:35:42,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2e5abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:35:42, skipping insertion in model container [2022-11-20 09:35:42,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:41" (2/3) ... [2022-11-20 09:35:42,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2e5abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:35:42, skipping insertion in model container [2022-11-20 09:35:42,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:35:42" (3/3) ... [2022-11-20 09:35:42,010 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s.i [2022-11-20 09:35:42,020 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:35:42,031 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:35:42,032 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:35:42,032 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:35:42,098 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 09:35:42,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 95 transitions, 206 flow [2022-11-20 09:35:42,256 INFO L130 PetriNetUnfolder]: 5/93 cut-off events. [2022-11-20 09:35:42,256 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 09:35:42,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 5/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-11-20 09:35:42,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 95 transitions, 206 flow [2022-11-20 09:35:42,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 79 transitions, 170 flow [2022-11-20 09:35:42,292 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:35:42,301 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1de02e5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:35:42,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 09:35:42,341 INFO L130 PetriNetUnfolder]: 4/78 cut-off events. [2022-11-20 09:35:42,341 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 09:35:42,341 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:35:42,346 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:42,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:35:42,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:42,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1504715845, now seen corresponding path program 1 times [2022-11-20 09:35:42,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:42,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068223476] [2022-11-20 09:35:42,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:42,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:42,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:42,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068223476] [2022-11-20 09:35:42,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068223476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:42,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:42,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:35:42,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357655901] [2022-11-20 09:35:42,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:42,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:35:42,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:42,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:35:42,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:35:42,921 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 95 [2022-11-20 09:35:42,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:42,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:35:42,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 95 [2022-11-20 09:35:42,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:35:42,991 INFO L130 PetriNetUnfolder]: 2/77 cut-off events. [2022-11-20 09:35:42,991 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-20 09:35:42,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 77 events. 2/77 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 1/76 useless extension candidates. Maximal degree in co-relation 48. Up to 8 conditions per place. [2022-11-20 09:35:42,993 INFO L137 encePairwiseOnDemand]: 90/95 looper letters, 9 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2022-11-20 09:35:42,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 77 transitions, 190 flow [2022-11-20 09:35:42,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:35:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:35:43,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 409 transitions. [2022-11-20 09:35:43,009 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8610526315789474 [2022-11-20 09:35:43,010 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 409 transitions. [2022-11-20 09:35:43,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 409 transitions. [2022-11-20 09:35:43,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:35:43,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 409 transitions. [2022-11-20 09:35:43,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:43,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:43,026 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:43,028 INFO L175 Difference]: Start difference. First operand has 82 places, 79 transitions, 170 flow. Second operand 5 states and 409 transitions. [2022-11-20 09:35:43,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 77 transitions, 190 flow [2022-11-20 09:35:43,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 182 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:35:43,035 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 164 flow [2022-11-20 09:35:43,037 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2022-11-20 09:35:43,041 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 0 predicate places. [2022-11-20 09:35:43,041 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 164 flow [2022-11-20 09:35:43,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:43,042 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:35:43,042 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:43,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:35:43,043 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:35:43,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:43,044 INFO L85 PathProgramCache]: Analyzing trace with hash 112165706, now seen corresponding path program 1 times [2022-11-20 09:35:43,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:43,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812165609] [2022-11-20 09:35:43,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:43,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:43,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:43,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812165609] [2022-11-20 09:35:43,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812165609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:43,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:43,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:35:43,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198678914] [2022-11-20 09:35:43,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:43,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:35:43,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:43,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:35:43,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:35:43,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 95 [2022-11-20 09:35:43,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:43,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:35:43,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 95 [2022-11-20 09:35:43,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:35:43,327 INFO L130 PetriNetUnfolder]: 1/81 cut-off events. [2022-11-20 09:35:43,327 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 09:35:43,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 81 events. 1/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 23 event pairs, 0 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 64. Up to 13 conditions per place. [2022-11-20 09:35:43,329 INFO L137 encePairwiseOnDemand]: 91/95 looper letters, 12 selfloop transitions, 0 changer transitions 4/80 dead transitions. [2022-11-20 09:35:43,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 202 flow [2022-11-20 09:35:43,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:35:43,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:35:43,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 402 transitions. [2022-11-20 09:35:43,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8463157894736842 [2022-11-20 09:35:43,333 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 402 transitions. [2022-11-20 09:35:43,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 402 transitions. [2022-11-20 09:35:43,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:35:43,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 402 transitions. [2022-11-20 09:35:43,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:43,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:43,339 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:43,339 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 164 flow. Second operand 5 states and 402 transitions. [2022-11-20 09:35:43,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 202 flow [2022-11-20 09:35:43,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 80 transitions, 197 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:35:43,343 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 163 flow [2022-11-20 09:35:43,343 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=163, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2022-11-20 09:35:43,344 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 4 predicate places. [2022-11-20 09:35:43,344 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 163 flow [2022-11-20 09:35:43,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:43,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:35:43,345 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:43,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:35:43,345 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:35:43,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:43,346 INFO L85 PathProgramCache]: Analyzing trace with hash -818905009, now seen corresponding path program 1 times [2022-11-20 09:35:43,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:43,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994085979] [2022-11-20 09:35:43,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:43,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:44,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:44,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:44,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994085979] [2022-11-20 09:35:44,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994085979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:44,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:44,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:35:44,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482229591] [2022-11-20 09:35:44,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:44,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:35:44,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:44,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:35:44,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:35:44,052 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 95 [2022-11-20 09:35:44,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 163 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:44,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:35:44,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 95 [2022-11-20 09:35:44,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:35:44,357 INFO L130 PetriNetUnfolder]: 16/122 cut-off events. [2022-11-20 09:35:44,357 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 09:35:44,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 122 events. 16/122 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 163 event pairs, 1 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 199. Up to 20 conditions per place. [2022-11-20 09:35:44,359 INFO L137 encePairwiseOnDemand]: 85/95 looper letters, 36 selfloop transitions, 10 changer transitions 0/87 dead transitions. [2022-11-20 09:35:44,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 87 transitions, 277 flow [2022-11-20 09:35:44,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:35:44,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:35:44,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 577 transitions. [2022-11-20 09:35:44,363 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6073684210526316 [2022-11-20 09:35:44,363 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 577 transitions. [2022-11-20 09:35:44,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 577 transitions. [2022-11-20 09:35:44,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:35:44,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 577 transitions. [2022-11-20 09:35:44,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.7) internal successors, (577), 10 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:44,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 95.0) internal successors, (1045), 11 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:44,370 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 95.0) internal successors, (1045), 11 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:44,371 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 163 flow. Second operand 10 states and 577 transitions. [2022-11-20 09:35:44,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 87 transitions, 277 flow [2022-11-20 09:35:44,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 87 transitions, 271 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-20 09:35:44,374 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 199 flow [2022-11-20 09:35:44,375 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=199, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2022-11-20 09:35:44,376 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 9 predicate places. [2022-11-20 09:35:44,376 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 199 flow [2022-11-20 09:35:44,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:44,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:35:44,377 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:44,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:35:44,378 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:35:44,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:44,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1195803001, now seen corresponding path program 1 times [2022-11-20 09:35:44,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:44,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233127532] [2022-11-20 09:35:44,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:44,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:45,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:45,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233127532] [2022-11-20 09:35:45,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233127532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:35:45,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216451896] [2022-11-20 09:35:45,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:45,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:45,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:45,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:45,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:35:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:45,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-20 09:35:45,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:45,586 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 09:35:45,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 09:35:45,645 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:35:45,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 09:35:45,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:35:45,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:35:46,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:46,197 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 09:35:46,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 20 [2022-11-20 09:35:46,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:46,388 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:35:46,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 09:35:46,502 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:35:46,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-11-20 09:35:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:46,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:35:47,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:47,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216451896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:35:47,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:35:47,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20, 18] total 43 [2022-11-20 09:35:47,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238721986] [2022-11-20 09:35:47,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:35:47,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-20 09:35:47,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:47,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-20 09:35:47,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1658, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 09:35:47,951 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 95 [2022-11-20 09:35:47,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 199 flow. Second operand has 43 states, 43 states have (on average 39.06976744186046) internal successors, (1680), 43 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:47,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:35:47,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 95 [2022-11-20 09:35:47,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:35:49,500 INFO L130 PetriNetUnfolder]: 29/175 cut-off events. [2022-11-20 09:35:49,504 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-20 09:35:49,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 175 events. 29/175 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 356 event pairs, 2 based on Foata normal form. 3/177 useless extension candidates. Maximal degree in co-relation 348. Up to 35 conditions per place. [2022-11-20 09:35:49,509 INFO L137 encePairwiseOnDemand]: 76/95 looper letters, 53 selfloop transitions, 18 changer transitions 10/110 dead transitions. [2022-11-20 09:35:49,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 110 transitions, 436 flow [2022-11-20 09:35:49,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 09:35:49,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 09:35:49,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 875 transitions. [2022-11-20 09:35:49,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41866028708133973 [2022-11-20 09:35:49,515 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 875 transitions. [2022-11-20 09:35:49,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 875 transitions. [2022-11-20 09:35:49,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:35:49,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 875 transitions. [2022-11-20 09:35:49,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 39.77272727272727) internal successors, (875), 22 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:49,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 95.0) internal successors, (2185), 23 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:49,524 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 95.0) internal successors, (2185), 23 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:49,524 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 199 flow. Second operand 22 states and 875 transitions. [2022-11-20 09:35:49,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 110 transitions, 436 flow [2022-11-20 09:35:49,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 110 transitions, 429 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:35:49,532 INFO L231 Difference]: Finished difference. Result has 114 places, 85 transitions, 270 flow [2022-11-20 09:35:49,532 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=270, PETRI_PLACES=114, PETRI_TRANSITIONS=85} [2022-11-20 09:35:49,534 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 32 predicate places. [2022-11-20 09:35:49,534 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 85 transitions, 270 flow [2022-11-20 09:35:49,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 39.06976744186046) internal successors, (1680), 43 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:49,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:35:49,539 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:49,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:49,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:49,751 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:35:49,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:49,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1599172469, now seen corresponding path program 2 times [2022-11-20 09:35:49,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:49,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465893370] [2022-11-20 09:35:49,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:49,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:50,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:50,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465893370] [2022-11-20 09:35:50,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465893370] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:35:50,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503808596] [2022-11-20 09:35:50,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:35:50,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:50,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:50,587 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:50,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:35:50,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:35:50,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:35:50,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 09:35:50,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:50,805 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 09:35:50,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 09:35:50,867 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 09:35:50,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 09:35:50,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:35:51,048 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:35:51,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 09:35:51,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:35:51,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:35:51,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:35:51,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:35:51,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 09:35:51,660 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:51,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:35:51,845 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_112) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (+ 2 |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|)))) is different from false [2022-11-20 09:35:51,863 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_112) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (+ 3 |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|)))) is different from false [2022-11-20 09:35:53,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 242 treesize of output 230 [2022-11-20 09:35:53,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 218 [2022-11-20 09:35:53,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 107 [2022-11-20 09:35:53,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 198 [2022-11-20 09:35:53,699 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2022-11-20 09:35:53,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503808596] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:35:53,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:35:53,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 45 [2022-11-20 09:35:53,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951876606] [2022-11-20 09:35:53,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:35:53,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-20 09:35:53,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:53,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-20 09:35:53,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1619, Unknown=17, NotChecked=166, Total=1980 [2022-11-20 09:35:53,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 95 [2022-11-20 09:35:53,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 85 transitions, 270 flow. Second operand has 45 states, 45 states have (on average 47.93333333333333) internal successors, (2157), 45 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:53,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:35:53,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 95 [2022-11-20 09:35:53,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:35:54,841 INFO L130 PetriNetUnfolder]: 32/202 cut-off events. [2022-11-20 09:35:54,841 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-11-20 09:35:54,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 202 events. 32/202 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 490 event pairs, 1 based on Foata normal form. 2/203 useless extension candidates. Maximal degree in co-relation 471. Up to 54 conditions per place. [2022-11-20 09:35:54,843 INFO L137 encePairwiseOnDemand]: 81/95 looper letters, 58 selfloop transitions, 20 changer transitions 4/116 dead transitions. [2022-11-20 09:35:54,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 116 transitions, 555 flow [2022-11-20 09:35:54,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 09:35:54,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 09:35:54,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 840 transitions. [2022-11-20 09:35:54,847 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5201238390092879 [2022-11-20 09:35:54,847 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 840 transitions. [2022-11-20 09:35:54,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 840 transitions. [2022-11-20 09:35:54,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:35:54,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 840 transitions. [2022-11-20 09:35:54,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 49.411764705882355) internal successors, (840), 17 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:54,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 95.0) internal successors, (1710), 18 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:54,855 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 95.0) internal successors, (1710), 18 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:54,855 INFO L175 Difference]: Start difference. First operand has 114 places, 85 transitions, 270 flow. Second operand 17 states and 840 transitions. [2022-11-20 09:35:54,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 116 transitions, 555 flow [2022-11-20 09:35:54,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 116 transitions, 488 flow, removed 16 selfloop flow, removed 16 redundant places. [2022-11-20 09:35:54,863 INFO L231 Difference]: Finished difference. Result has 115 places, 94 transitions, 329 flow [2022-11-20 09:35:54,863 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=329, PETRI_PLACES=115, PETRI_TRANSITIONS=94} [2022-11-20 09:35:54,866 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 33 predicate places. [2022-11-20 09:35:54,868 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 94 transitions, 329 flow [2022-11-20 09:35:54,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 47.93333333333333) internal successors, (2157), 45 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:54,870 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:35:54,870 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:54,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 09:35:55,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:55,079 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:35:55,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:55,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1424461861, now seen corresponding path program 3 times [2022-11-20 09:35:55,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:55,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628077161] [2022-11-20 09:35:55,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:55,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:55,816 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:55,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:55,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628077161] [2022-11-20 09:35:55,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628077161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:35:55,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91914064] [2022-11-20 09:35:55,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:35:55,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:55,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:55,823 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:55,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:35:55,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 09:35:55,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:35:55,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 09:35:55,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:56,219 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-20 09:35:56,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-20 09:35:56,314 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 09:35:56,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-20 09:35:56,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:35:56,716 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 09:35:56,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-20 09:35:56,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 09:35:57,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:35:57,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:35:57,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:35:57,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 09:35:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:57,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:35:57,770 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_156 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_156) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (+ 2 |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|)))) is different from false [2022-11-20 09:35:59,225 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:35:59,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 494 treesize of output 466 [2022-11-20 09:35:59,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 454 treesize of output 438 [2022-11-20 09:35:59,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 438 treesize of output 406 [2022-11-20 09:36:00,099 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2022-11-20 09:36:00,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91914064] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:36:00,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:36:00,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 17] total 48 [2022-11-20 09:36:00,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529069670] [2022-11-20 09:36:00,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:36:00,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-20 09:36:00,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:36:00,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-20 09:36:00,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1957, Unknown=26, NotChecked=90, Total=2256 [2022-11-20 09:36:00,105 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 95 [2022-11-20 09:36:00,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 94 transitions, 329 flow. Second operand has 48 states, 48 states have (on average 47.9375) internal successors, (2301), 48 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:36:00,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:36:00,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 95 [2022-11-20 09:36:00,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:36:02,236 INFO L130 PetriNetUnfolder]: 33/208 cut-off events. [2022-11-20 09:36:02,236 INFO L131 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2022-11-20 09:36:02,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 208 events. 33/208 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 529 event pairs, 3 based on Foata normal form. 1/208 useless extension candidates. Maximal degree in co-relation 571. Up to 29 conditions per place. [2022-11-20 09:36:02,241 INFO L137 encePairwiseOnDemand]: 80/95 looper letters, 53 selfloop transitions, 23 changer transitions 4/114 dead transitions. [2022-11-20 09:36:02,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 114 transitions, 584 flow [2022-11-20 09:36:02,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 09:36:02,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-20 09:36:02,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 929 transitions. [2022-11-20 09:36:02,244 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5146814404432133 [2022-11-20 09:36:02,244 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 929 transitions. [2022-11-20 09:36:02,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 929 transitions. [2022-11-20 09:36:02,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:36:02,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 929 transitions. [2022-11-20 09:36:02,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 48.89473684210526) internal successors, (929), 19 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:36:02,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 95.0) internal successors, (1900), 20 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:36:02,253 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 95.0) internal successors, (1900), 20 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:36:02,253 INFO L175 Difference]: Start difference. First operand has 115 places, 94 transitions, 329 flow. Second operand 19 states and 929 transitions. [2022-11-20 09:36:02,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 114 transitions, 584 flow [2022-11-20 09:36:02,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 114 transitions, 564 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-20 09:36:02,262 INFO L231 Difference]: Finished difference. Result has 127 places, 97 transitions, 390 flow [2022-11-20 09:36:02,263 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=390, PETRI_PLACES=127, PETRI_TRANSITIONS=97} [2022-11-20 09:36:02,265 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 45 predicate places. [2022-11-20 09:36:02,266 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 97 transitions, 390 flow [2022-11-20 09:36:02,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 47.9375) internal successors, (2301), 48 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:36:02,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:36:02,267 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:02,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 09:36:02,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:36:02,474 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:36:02,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:02,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1424096535, now seen corresponding path program 4 times [2022-11-20 09:36:02,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:36:02,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008967563] [2022-11-20 09:36:02,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:02,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:36:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:03,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:36:03,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008967563] [2022-11-20 09:36:03,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008967563] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:36:03,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243628400] [2022-11-20 09:36:03,413 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 09:36:03,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:36:03,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:36:03,415 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:36:03,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:36:03,557 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 09:36:03,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:36:03,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-20 09:36:03,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:03,668 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 09:36:03,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 09:36:03,706 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:36:03,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 09:36:03,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:36:03,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:36:04,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:04,202 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 09:36:04,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 20 [2022-11-20 09:36:04,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:04,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:04,370 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:36:04,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-20 09:36:04,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:04,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:04,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:04,519 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:36:04,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 09:36:04,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:04,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:04,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:04,681 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:36:04,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 09:36:04,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:04,797 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:36:04,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 09:36:04,901 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:36:04,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-20 09:36:05,014 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:05,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:36:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 12 refuted. 2 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:36:57,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243628400] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:36:57,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:36:57,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23, 22] total 53 [2022-11-20 09:36:57,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203377403] [2022-11-20 09:36:57,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:36:57,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-20 09:36:57,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:36:57,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-20 09:36:57,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2511, Unknown=16, NotChecked=0, Total=2756 [2022-11-20 09:36:57,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 95 [2022-11-20 09:36:57,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 97 transitions, 390 flow. Second operand has 53 states, 53 states have (on average 38.132075471698116) internal successors, (2021), 53 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:36:57,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:36:57,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 95 [2022-11-20 09:36:57,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:37:17,327 WARN L233 SmtUtils]: Spent 6.00s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:38:01,648 INFO L130 PetriNetUnfolder]: 37/378 cut-off events. [2022-11-20 09:38:01,648 INFO L131 PetriNetUnfolder]: For 534/534 co-relation queries the response was YES. [2022-11-20 09:38:01,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 378 events. 37/378 cut-off events. For 534/534 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1566 event pairs, 3 based on Foata normal form. 8/385 useless extension candidates. Maximal degree in co-relation 1119. Up to 38 conditions per place. [2022-11-20 09:38:01,651 INFO L137 encePairwiseOnDemand]: 75/95 looper letters, 52 selfloop transitions, 19 changer transitions 142/241 dead transitions. [2022-11-20 09:38:01,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 241 transitions, 1541 flow [2022-11-20 09:38:01,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-20 09:38:01,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-11-20 09:38:01,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 2595 transitions. [2022-11-20 09:38:01,663 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40170278637770895 [2022-11-20 09:38:01,663 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 2595 transitions. [2022-11-20 09:38:01,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 2595 transitions. [2022-11-20 09:38:01,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:38:01,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 2595 transitions. [2022-11-20 09:38:01,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 38.161764705882355) internal successors, (2595), 68 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:38:01,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 95.0) internal successors, (6555), 69 states have internal predecessors, (6555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:38:01,689 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 95.0) internal successors, (6555), 69 states have internal predecessors, (6555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:38:01,690 INFO L175 Difference]: Start difference. First operand has 127 places, 97 transitions, 390 flow. Second operand 68 states and 2595 transitions. [2022-11-20 09:38:01,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 241 transitions, 1541 flow [2022-11-20 09:38:01,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 241 transitions, 1446 flow, removed 22 selfloop flow, removed 15 redundant places. [2022-11-20 09:38:01,699 INFO L231 Difference]: Finished difference. Result has 210 places, 90 transitions, 419 flow [2022-11-20 09:38:01,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=419, PETRI_PLACES=210, PETRI_TRANSITIONS=90} [2022-11-20 09:38:01,700 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 128 predicate places. [2022-11-20 09:38:01,700 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 90 transitions, 419 flow [2022-11-20 09:38:01,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 38.132075471698116) internal successors, (2021), 53 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:38:01,702 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:38:01,702 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:38:01,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 09:38:01,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:38:01,909 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:38:01,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:38:01,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1349791373, now seen corresponding path program 5 times [2022-11-20 09:38:01,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:38:01,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267544731] [2022-11-20 09:38:01,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:38:01,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:38:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:38:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:38:03,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267544731] [2022-11-20 09:38:03,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267544731] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:38:03,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157484724] [2022-11-20 09:38:03,074 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 09:38:03,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:38:03,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:38:03,076 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:38:03,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:38:03,220 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-20 09:38:03,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:38:03,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-20 09:38:03,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:38:03,348 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 09:38:03,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 09:38:03,404 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:38:03,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 09:38:03,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:38:03,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:38:04,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:38:04,033 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 09:38:04,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 20 [2022-11-20 09:38:04,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:04,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:04,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:38:04,204 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:38:04,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-20 09:38:04,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:04,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:04,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:38:04,331 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:38:04,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-20 09:38:04,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:04,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:04,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:38:04,492 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:38:04,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-20 09:38:04,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:04,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:04,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:38:04,612 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:38:04,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-20 09:38:04,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:04,738 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:38:04,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-20 09:38:04,879 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:38:04,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-11-20 09:38:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 18 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:38:05,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:38:46,901 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1_54| Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1_56| Int) (v_ArrVal_267 Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1_57| Int) (v_ArrVal_265 Int) (v_ArrVal_261 Int) (v_ArrVal_259 Int)) (or (= 66 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (select |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base|) (+ |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) v_ArrVal_259) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1_57| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_261) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1_56| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_265) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1_54| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_267)) c_~v~0.base) c_~v~0.offset)) (not (<= (+ |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1_57|)) (not (<= (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1_57| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1_56|)) (not (<= (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1_56| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1_54|)))) is different from false [2022-11-20 09:39:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 22 proven. 13 refuted. 6 times theorem prover too weak. 4 trivial. 10 not checked. [2022-11-20 09:39:52,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157484724] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:39:52,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:39:52,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24, 24] total 56 [2022-11-20 09:39:52,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319816593] [2022-11-20 09:39:52,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:39:52,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-20 09:39:52,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:39:52,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-20 09:39:52,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=2678, Unknown=38, NotChecked=106, Total=3080 [2022-11-20 09:39:52,873 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 95 [2022-11-20 09:39:52,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 90 transitions, 419 flow. Second operand has 56 states, 56 states have (on average 38.17857142857143) internal successors, (2138), 56 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:39:52,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:39:52,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 95 [2022-11-20 09:39:52,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:39:57,320 INFO L130 PetriNetUnfolder]: 5/120 cut-off events. [2022-11-20 09:39:57,320 INFO L131 PetriNetUnfolder]: For 364/364 co-relation queries the response was YES. [2022-11-20 09:39:57,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 120 events. 5/120 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 1 based on Foata normal form. 2/122 useless extension candidates. Maximal degree in co-relation 373. Up to 10 conditions per place. [2022-11-20 09:39:57,321 INFO L137 encePairwiseOnDemand]: 75/95 looper letters, 0 selfloop transitions, 0 changer transitions 107/107 dead transitions. [2022-11-20 09:39:57,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 107 transitions, 694 flow [2022-11-20 09:39:57,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 09:39:57,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-20 09:39:57,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1027 transitions. [2022-11-20 09:39:57,326 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4003898635477583 [2022-11-20 09:39:57,326 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1027 transitions. [2022-11-20 09:39:57,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1027 transitions. [2022-11-20 09:39:57,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:39:57,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1027 transitions. [2022-11-20 09:39:57,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 38.03703703703704) internal successors, (1027), 27 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:39:57,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 95.0) internal successors, (2660), 28 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:39:57,335 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 95.0) internal successors, (2660), 28 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:39:57,336 INFO L175 Difference]: Start difference. First operand has 210 places, 90 transitions, 419 flow. Second operand 27 states and 1027 transitions. [2022-11-20 09:39:57,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 107 transitions, 694 flow [2022-11-20 09:39:57,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 107 transitions, 502 flow, removed 69 selfloop flow, removed 52 redundant places. [2022-11-20 09:39:57,341 INFO L231 Difference]: Finished difference. Result has 134 places, 0 transitions, 0 flow [2022-11-20 09:39:57,341 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=0, PETRI_PLACES=134, PETRI_TRANSITIONS=0} [2022-11-20 09:39:57,342 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 52 predicate places. [2022-11-20 09:39:57,342 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 0 transitions, 0 flow [2022-11-20 09:39:57,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 38.17857142857143) internal successors, (2138), 56 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:39:57,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-20 09:39:57,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-20 09:39:57,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-20 09:39:57,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:39:57,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:39:57,554 INFO L444 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2022-11-20 09:39:57,557 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 09:39:57,557 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 09:39:57,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:39:57 BasicIcfg [2022-11-20 09:39:57,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 09:39:57,563 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 09:39:57,563 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 09:39:57,563 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 09:39:57,564 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:35:42" (3/4) ... [2022-11-20 09:39:57,567 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 09:39:57,574 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 09:39:57,574 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 09:39:57,579 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-20 09:39:57,579 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-20 09:39:57,580 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 09:39:57,580 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 09:39:57,580 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 09:39:57,615 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 09:39:57,615 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 09:39:57,616 INFO L158 Benchmark]: Toolchain (without parser) took 256970.34ms. Allocated memory was 138.4MB in the beginning and 297.8MB in the end (delta: 159.4MB). Free memory was 71.5MB in the beginning and 219.4MB in the end (delta: -147.9MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2022-11-20 09:39:57,616 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:39:57,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 708.11ms. Allocated memory was 138.4MB in the beginning and 205.5MB in the end (delta: 67.1MB). Free memory was 71.3MB in the beginning and 145.0MB in the end (delta: -73.7MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2022-11-20 09:39:57,617 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.08ms. Allocated memory is still 205.5MB. Free memory was 145.0MB in the beginning and 142.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:39:57,617 INFO L158 Benchmark]: Boogie Preprocessor took 29.56ms. Allocated memory is still 205.5MB. Free memory was 142.9MB in the beginning and 141.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:39:57,618 INFO L158 Benchmark]: RCFGBuilder took 547.36ms. Allocated memory is still 205.5MB. Free memory was 141.8MB in the beginning and 127.3MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 09:39:57,618 INFO L158 Benchmark]: TraceAbstraction took 255558.39ms. Allocated memory was 205.5MB in the beginning and 297.8MB in the end (delta: 92.3MB). Free memory was 126.2MB in the beginning and 221.5MB in the end (delta: -95.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:39:57,619 INFO L158 Benchmark]: Witness Printer took 52.83ms. Allocated memory is still 297.8MB. Free memory was 221.5MB in the beginning and 219.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:39:57,621 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 708.11ms. Allocated memory was 138.4MB in the beginning and 205.5MB in the end (delta: 67.1MB). Free memory was 71.3MB in the beginning and 145.0MB in the end (delta: -73.7MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.08ms. Allocated memory is still 205.5MB. Free memory was 145.0MB in the beginning and 142.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.56ms. Allocated memory is still 205.5MB. Free memory was 142.9MB in the beginning and 141.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 547.36ms. Allocated memory is still 205.5MB. Free memory was 141.8MB in the beginning and 127.3MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 255558.39ms. Allocated memory was 205.5MB in the beginning and 297.8MB in the end (delta: 92.3MB). Free memory was 126.2MB in the beginning and 221.5MB in the end (delta: -95.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 52.83ms. Allocated memory is still 297.8MB. Free memory was 221.5MB in the beginning and 219.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1107]: 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 with 1 thread instances CFG has 5 procedures, 118 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 255.4s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 74.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2591 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2591 mSDsluCounter, 1981 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1815 IncrementalHoareTripleChecker+Unchecked, 1855 mSDsCounter, 401 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4578 IncrementalHoareTripleChecker+Invalid, 6794 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 401 mSolverCounterUnsat, 126 mSDtfsCounter, 4578 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1195 GetRequests, 777 SyntacticMatches, 33 SemanticMatches, 385 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 7550 ImplicationChecksByTransitivity, 234.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=419occurred in iteration=7, InterpolantAutomatonStates: 173, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 178.3s InterpolantComputationTime, 1074 NumberOfCodeBlocks, 1074 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 1490 ConstructedInterpolants, 222 QuantifiedInterpolants, 20748 SizeOfPredicates, 79 NumberOfNonLiveVariables, 1189 ConjunctsInSsa, 238 ConjunctsInUnsatCore, 18 InterpolantComputations, 3 PerfectInterpolantSequences, 74/408 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! [2022-11-20 09:39:57,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b000fc-ad98-4000-96f3-cac36f0e8d43/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE