./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 13:45:33,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:45:33,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:45:33,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:45:33,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:45:33,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:45:33,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:45:33,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:45:33,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:45:33,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:45:33,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:45:33,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:45:33,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:45:33,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:45:33,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:45:33,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:45:33,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:45:33,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:45:33,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:45:33,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:45:33,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:45:33,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:45:33,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:45:33,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:45:33,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:45:33,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:45:33,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:45:33,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:45:33,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:45:33,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:45:33,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:45:33,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:45:33,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:45:33,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:45:33,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:45:33,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:45:33,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:45:33,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:45:33,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:45:33,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:45:33,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:45:33,765 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:45:33,804 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:45:33,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:45:33,807 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:45:33,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:45:33,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:45:33,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:45:33,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:45:33,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:45:33,809 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:45:33,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:45:33,810 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:45:33,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:45:33,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:45:33,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:45:33,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:45:33,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:45:33,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:45:33,812 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:45:33,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:45:33,812 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:45:33,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:45:33,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:45:33,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:45:33,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:45:33,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:45:33,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:45:33,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:45:33,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:45:33,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:45:33,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:45:33,815 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:45:33,815 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:45:33,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:45:33,816 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_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc [2022-11-21 13:45:34,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:45:34,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:45:34,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:45:34,156 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:45:34,156 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:45:34,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2022-11-21 13:45:37,359 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:45:37,559 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:45:37,560 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2022-11-21 13:45:37,572 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/data/04e1da38f/514b44fb7c074ce3a6db78073c3812e5/FLAG8291d8cb4 [2022-11-21 13:45:37,588 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/data/04e1da38f/514b44fb7c074ce3a6db78073c3812e5 [2022-11-21 13:45:37,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:45:37,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:45:37,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:45:37,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:45:37,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:45:37,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:45:37" (1/1) ... [2022-11-21 13:45:37,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b460889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:37, skipping insertion in model container [2022-11-21 13:45:37,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:45:37" (1/1) ... [2022-11-21 13:45:37,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:45:37,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:45:37,886 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_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2022-11-21 13:45:37,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:45:37,911 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:45:37,939 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_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2022-11-21 13:45:37,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:45:37,955 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:45:37,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:37 WrapperNode [2022-11-21 13:45:37,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:45:37,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:45:37,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:45:37,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:45:37,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:37" (1/1) ... [2022-11-21 13:45:37,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:37" (1/1) ... [2022-11-21 13:45:37,993 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 121 [2022-11-21 13:45:37,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:45:37,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:45:37,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:45:37,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:45:38,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:37" (1/1) ... [2022-11-21 13:45:38,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:37" (1/1) ... [2022-11-21 13:45:38,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:37" (1/1) ... [2022-11-21 13:45:38,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:37" (1/1) ... [2022-11-21 13:45:38,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:37" (1/1) ... [2022-11-21 13:45:38,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:37" (1/1) ... [2022-11-21 13:45:38,026 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:37" (1/1) ... [2022-11-21 13:45:38,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:37" (1/1) ... [2022-11-21 13:45:38,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:45:38,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:45:38,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:45:38,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:45:38,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:37" (1/1) ... [2022-11-21 13:45:38,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:45:38,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:38,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:45:38,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:45:38,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:45:38,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:45:38,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 13:45:38,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 13:45:38,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 13:45:38,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 13:45:38,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 13:45:38,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 13:45:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 13:45:38,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 13:45:38,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:45:38,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 13:45:38,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 13:45:38,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 13:45:38,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:45:38,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:45:38,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:45:38,125 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 13:45:38,295 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:45:38,298 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:45:38,726 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:45:38,769 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:45:38,770 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-21 13:45:38,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:45:38 BoogieIcfgContainer [2022-11-21 13:45:38,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:45:38,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:45:38,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:45:38,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:45:38,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:45:37" (1/3) ... [2022-11-21 13:45:38,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0d5034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:45:38, skipping insertion in model container [2022-11-21 13:45:38,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:37" (2/3) ... [2022-11-21 13:45:38,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0d5034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:45:38, skipping insertion in model container [2022-11-21 13:45:38,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:45:38" (3/3) ... [2022-11-21 13:45:38,783 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2022-11-21 13:45:38,792 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 13:45:38,802 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:45:38,802 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:45:38,802 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 13:45:38,894 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 13:45:38,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 186 transitions, 396 flow [2022-11-21 13:45:39,057 INFO L130 PetriNetUnfolder]: 16/183 cut-off events. [2022-11-21 13:45:39,066 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 13:45:39,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 183 events. 16/183 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 142. Up to 3 conditions per place. [2022-11-21 13:45:39,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 186 transitions, 396 flow [2022-11-21 13:45:39,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 172 transitions, 362 flow [2022-11-21 13:45:39,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:45:39,112 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;@7228841b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:45:39,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-21 13:45:39,197 INFO L130 PetriNetUnfolder]: 16/171 cut-off events. [2022-11-21 13:45:39,197 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 13:45:39,197 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:45:39,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:39,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 13:45:39,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:39,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1005280070, now seen corresponding path program 1 times [2022-11-21 13:45:39,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:39,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628245297] [2022-11-21 13:45:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:39,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:39,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:45:39,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:39,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628245297] [2022-11-21 13:45:39,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628245297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:39,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:39,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:45:39,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007739740] [2022-11-21 13:45:39,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:39,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:45:39,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:39,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:45:39,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:45:39,596 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 186 [2022-11-21 13:45:39,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 172 transitions, 362 flow. Second operand has 2 states, 2 states have (on average 172.5) internal successors, (345), 2 states have internal predecessors, (345), 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) [2022-11-21 13:45:39,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:45:39,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 186 [2022-11-21 13:45:39,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:45:39,798 INFO L130 PetriNetUnfolder]: 19/211 cut-off events. [2022-11-21 13:45:39,799 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-11-21 13:45:39,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 211 events. 19/211 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 311 event pairs, 7 based on Foata normal form. 28/222 useless extension candidates. Maximal degree in co-relation 137. Up to 28 conditions per place. [2022-11-21 13:45:39,805 INFO L137 encePairwiseOnDemand]: 176/186 looper letters, 8 selfloop transitions, 0 changer transitions 5/162 dead transitions. [2022-11-21 13:45:39,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 162 transitions, 358 flow [2022-11-21 13:45:39,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:45:39,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 13:45:39,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 352 transitions. [2022-11-21 13:45:39,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.946236559139785 [2022-11-21 13:45:39,831 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 352 transitions. [2022-11-21 13:45:39,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 352 transitions. [2022-11-21 13:45:39,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:45:39,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 352 transitions. [2022-11-21 13:45:39,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 176.0) internal successors, (352), 2 states have internal predecessors, (352), 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) [2022-11-21 13:45:39,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 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) [2022-11-21 13:45:39,855 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 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) [2022-11-21 13:45:39,857 INFO L175 Difference]: Start difference. First operand has 166 places, 172 transitions, 362 flow. Second operand 2 states and 352 transitions. [2022-11-21 13:45:39,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 162 transitions, 358 flow [2022-11-21 13:45:39,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 162 transitions, 346 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 13:45:39,871 INFO L231 Difference]: Finished difference. Result has 161 places, 157 transitions, 320 flow [2022-11-21 13:45:39,873 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=320, PETRI_PLACES=161, PETRI_TRANSITIONS=157} [2022-11-21 13:45:39,882 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, -5 predicate places. [2022-11-21 13:45:39,882 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 157 transitions, 320 flow [2022-11-21 13:45:39,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 172.5) internal successors, (345), 2 states have internal predecessors, (345), 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) [2022-11-21 13:45:39,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:45:39,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:39,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:45:39,884 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 13:45:39,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:39,887 INFO L85 PathProgramCache]: Analyzing trace with hash -496840829, now seen corresponding path program 1 times [2022-11-21 13:45:39,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:39,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797701579] [2022-11-21 13:45:39,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:39,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:42,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:45:42,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:42,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797701579] [2022-11-21 13:45:42,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797701579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:42,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:42,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-21 13:45:42,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254143631] [2022-11-21 13:45:42,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:42,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 13:45:42,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:42,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 13:45:42,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:45:42,950 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 186 [2022-11-21 13:45:42,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 157 transitions, 320 flow. Second operand has 13 states, 13 states have (on average 114.46153846153847) internal successors, (1488), 13 states have internal predecessors, (1488), 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) [2022-11-21 13:45:42,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:45:42,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 186 [2022-11-21 13:45:42,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:45:45,888 INFO L130 PetriNetUnfolder]: 753/2013 cut-off events. [2022-11-21 13:45:45,889 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2022-11-21 13:45:45,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3233 conditions, 2013 events. 753/2013 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13352 event pairs, 247 based on Foata normal form. 2/1599 useless extension candidates. Maximal degree in co-relation 3230. Up to 347 conditions per place. [2022-11-21 13:45:45,911 INFO L137 encePairwiseOnDemand]: 161/186 looper letters, 120 selfloop transitions, 34 changer transitions 8/260 dead transitions. [2022-11-21 13:45:45,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 260 transitions, 870 flow [2022-11-21 13:45:45,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 13:45:45,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-21 13:45:45,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2495 transitions. [2022-11-21 13:45:45,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6387608806963646 [2022-11-21 13:45:45,921 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2495 transitions. [2022-11-21 13:45:45,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2495 transitions. [2022-11-21 13:45:45,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:45:45,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2495 transitions. [2022-11-21 13:45:45,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 118.80952380952381) internal successors, (2495), 21 states have internal predecessors, (2495), 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) [2022-11-21 13:45:45,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 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) [2022-11-21 13:45:45,942 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 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) [2022-11-21 13:45:45,943 INFO L175 Difference]: Start difference. First operand has 161 places, 157 transitions, 320 flow. Second operand 21 states and 2495 transitions. [2022-11-21 13:45:45,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 260 transitions, 870 flow [2022-11-21 13:45:45,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 260 transitions, 870 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 13:45:45,952 INFO L231 Difference]: Finished difference. Result has 183 places, 176 transitions, 472 flow [2022-11-21 13:45:45,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=472, PETRI_PLACES=183, PETRI_TRANSITIONS=176} [2022-11-21 13:45:45,954 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 17 predicate places. [2022-11-21 13:45:45,955 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 176 transitions, 472 flow [2022-11-21 13:45:45,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 114.46153846153847) internal successors, (1488), 13 states have internal predecessors, (1488), 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) [2022-11-21 13:45:45,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:45:45,957 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:45,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:45:45,958 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 13:45:45,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:45,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1000811556, now seen corresponding path program 1 times [2022-11-21 13:45:45,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:45,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655426839] [2022-11-21 13:45:45,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:45,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:45:46,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:46,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655426839] [2022-11-21 13:45:46,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655426839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:46,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:46,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:45:46,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029259664] [2022-11-21 13:45:46,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:46,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:45:46,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:46,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:45:46,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:45:46,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 186 [2022-11-21 13:45:46,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 176 transitions, 472 flow. Second operand has 7 states, 7 states have (on average 134.85714285714286) internal successors, (944), 7 states have internal predecessors, (944), 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) [2022-11-21 13:45:46,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:45:46,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 186 [2022-11-21 13:45:46,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:45:47,100 INFO L130 PetriNetUnfolder]: 1164/2678 cut-off events. [2022-11-21 13:45:47,101 INFO L131 PetriNetUnfolder]: For 265/265 co-relation queries the response was YES. [2022-11-21 13:45:47,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4648 conditions, 2678 events. 1164/2678 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 18187 event pairs, 591 based on Foata normal form. 0/2027 useless extension candidates. Maximal degree in co-relation 4637. Up to 1043 conditions per place. [2022-11-21 13:45:47,127 INFO L137 encePairwiseOnDemand]: 172/186 looper letters, 98 selfloop transitions, 18 changer transitions 0/234 dead transitions. [2022-11-21 13:45:47,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 234 transitions, 846 flow [2022-11-21 13:45:47,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:45:47,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 13:45:47,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1546 transitions. [2022-11-21 13:45:47,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7556207233626588 [2022-11-21 13:45:47,132 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1546 transitions. [2022-11-21 13:45:47,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1546 transitions. [2022-11-21 13:45:47,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:45:47,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1546 transitions. [2022-11-21 13:45:47,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 140.54545454545453) internal successors, (1546), 11 states have internal predecessors, (1546), 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) [2022-11-21 13:45:47,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 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) [2022-11-21 13:45:47,144 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 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) [2022-11-21 13:45:47,144 INFO L175 Difference]: Start difference. First operand has 183 places, 176 transitions, 472 flow. Second operand 11 states and 1546 transitions. [2022-11-21 13:45:47,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 234 transitions, 846 flow [2022-11-21 13:45:47,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 234 transitions, 832 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-11-21 13:45:47,155 INFO L231 Difference]: Finished difference. Result has 185 places, 176 transitions, 496 flow [2022-11-21 13:45:47,156 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=496, PETRI_PLACES=185, PETRI_TRANSITIONS=176} [2022-11-21 13:45:47,158 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 19 predicate places. [2022-11-21 13:45:47,158 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 176 transitions, 496 flow [2022-11-21 13:45:47,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.85714285714286) internal successors, (944), 7 states have internal predecessors, (944), 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) [2022-11-21 13:45:47,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:45:47,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:47,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 13:45:47,160 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 13:45:47,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:47,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1631634285, now seen corresponding path program 1 times [2022-11-21 13:45:47,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:47,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012834893] [2022-11-21 13:45:47,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:47,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:47,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:45:47,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:47,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012834893] [2022-11-21 13:45:47,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012834893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:47,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:47,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:45:47,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575382068] [2022-11-21 13:45:47,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:47,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:45:47,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:47,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:45:47,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:45:47,383 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 186 [2022-11-21 13:45:47,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 176 transitions, 496 flow. Second operand has 7 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 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) [2022-11-21 13:45:47,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:45:47,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 186 [2022-11-21 13:45:47,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:45:48,178 INFO L130 PetriNetUnfolder]: 837/2209 cut-off events. [2022-11-21 13:45:48,178 INFO L131 PetriNetUnfolder]: For 546/581 co-relation queries the response was YES. [2022-11-21 13:45:48,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3967 conditions, 2209 events. 837/2209 cut-off events. For 546/581 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 14647 event pairs, 484 based on Foata normal form. 29/1901 useless extension candidates. Maximal degree in co-relation 3957. Up to 1010 conditions per place. [2022-11-21 13:45:48,198 INFO L137 encePairwiseOnDemand]: 172/186 looper letters, 45 selfloop transitions, 10 changer transitions 59/228 dead transitions. [2022-11-21 13:45:48,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 228 transitions, 838 flow [2022-11-21 13:45:48,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:45:48,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 13:45:48,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1540 transitions. [2022-11-21 13:45:48,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7526881720430108 [2022-11-21 13:45:48,204 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1540 transitions. [2022-11-21 13:45:48,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1540 transitions. [2022-11-21 13:45:48,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:45:48,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1540 transitions. [2022-11-21 13:45:48,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 140.0) internal successors, (1540), 11 states have internal predecessors, (1540), 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) [2022-11-21 13:45:48,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 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) [2022-11-21 13:45:48,217 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 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) [2022-11-21 13:45:48,217 INFO L175 Difference]: Start difference. First operand has 185 places, 176 transitions, 496 flow. Second operand 11 states and 1540 transitions. [2022-11-21 13:45:48,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 228 transitions, 838 flow [2022-11-21 13:45:48,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 228 transitions, 816 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 13:45:48,232 INFO L231 Difference]: Finished difference. Result has 193 places, 163 transitions, 433 flow [2022-11-21 13:45:48,232 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=433, PETRI_PLACES=193, PETRI_TRANSITIONS=163} [2022-11-21 13:45:48,234 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 27 predicate places. [2022-11-21 13:45:48,234 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 163 transitions, 433 flow [2022-11-21 13:45:48,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 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) [2022-11-21 13:45:48,235 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:45:48,235 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:48,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 13:45:48,236 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 13:45:48,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:48,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1097399783, now seen corresponding path program 1 times [2022-11-21 13:45:48,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:48,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42987708] [2022-11-21 13:45:48,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:48,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:45:48,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:48,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42987708] [2022-11-21 13:45:48,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42987708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:45:48,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284278459] [2022-11-21 13:45:48,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:48,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:48,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:48,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:45:48,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:45:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:48,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 13:45:48,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:45:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:45:48,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:45:49,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:45:49,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284278459] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 13:45:49,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:45:49,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-21 13:45:49,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856973407] [2022-11-21 13:45:49,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:49,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:45:49,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:49,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:45:49,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:45:49,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 186 [2022-11-21 13:45:49,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 163 transitions, 433 flow. Second operand has 7 states, 7 states have (on average 135.28571428571428) internal successors, (947), 7 states have internal predecessors, (947), 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) [2022-11-21 13:45:49,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:45:49,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 186 [2022-11-21 13:45:49,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:45:49,445 INFO L130 PetriNetUnfolder]: 707/1526 cut-off events. [2022-11-21 13:45:49,445 INFO L131 PetriNetUnfolder]: For 705/705 co-relation queries the response was YES. [2022-11-21 13:45:49,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3091 conditions, 1526 events. 707/1526 cut-off events. For 705/705 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8788 event pairs, 183 based on Foata normal form. 51/1332 useless extension candidates. Maximal degree in co-relation 3077. Up to 662 conditions per place. [2022-11-21 13:45:49,463 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 51 selfloop transitions, 7 changer transitions 0/172 dead transitions. [2022-11-21 13:45:49,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 172 transitions, 577 flow [2022-11-21 13:45:49,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:45:49,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 13:45:49,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 965 transitions. [2022-11-21 13:45:49,466 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7411674347158218 [2022-11-21 13:45:49,466 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 965 transitions. [2022-11-21 13:45:49,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 965 transitions. [2022-11-21 13:45:49,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:45:49,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 965 transitions. [2022-11-21 13:45:49,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.85714285714286) internal successors, (965), 7 states have internal predecessors, (965), 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) [2022-11-21 13:45:49,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 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) [2022-11-21 13:45:49,473 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 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) [2022-11-21 13:45:49,473 INFO L175 Difference]: Start difference. First operand has 193 places, 163 transitions, 433 flow. Second operand 7 states and 965 transitions. [2022-11-21 13:45:49,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 172 transitions, 577 flow [2022-11-21 13:45:49,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 172 transitions, 506 flow, removed 14 selfloop flow, removed 18 redundant places. [2022-11-21 13:45:49,479 INFO L231 Difference]: Finished difference. Result has 170 places, 165 transitions, 403 flow [2022-11-21 13:45:49,479 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=403, PETRI_PLACES=170, PETRI_TRANSITIONS=165} [2022-11-21 13:45:49,480 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 4 predicate places. [2022-11-21 13:45:49,480 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 165 transitions, 403 flow [2022-11-21 13:45:49,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.28571428571428) internal successors, (947), 7 states have internal predecessors, (947), 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) [2022-11-21 13:45:49,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:45:49,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:49,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:45:49,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:49,688 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 13:45:49,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:49,689 INFO L85 PathProgramCache]: Analyzing trace with hash -516594626, now seen corresponding path program 1 times [2022-11-21 13:45:49,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:49,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253280646] [2022-11-21 13:45:49,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:49,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 13:45:49,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:49,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253280646] [2022-11-21 13:45:49,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253280646] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:45:49,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907739856] [2022-11-21 13:45:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:49,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:49,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:49,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:45:49,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 13:45:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:50,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 13:45:50,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:45:50,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 13:45:50,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:45:50,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 13:45:50,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907739856] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 13:45:50,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:45:50,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-21 13:45:50,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044440009] [2022-11-21 13:45:50,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:50,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:45:50,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:50,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:45:50,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:45:50,488 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 186 [2022-11-21 13:45:50,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 165 transitions, 403 flow. Second operand has 7 states, 7 states have (on average 135.57142857142858) internal successors, (949), 7 states have internal predecessors, (949), 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) [2022-11-21 13:45:50,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:45:50,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 186 [2022-11-21 13:45:50,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:45:50,802 INFO L130 PetriNetUnfolder]: 523/1137 cut-off events. [2022-11-21 13:45:50,803 INFO L131 PetriNetUnfolder]: For 392/486 co-relation queries the response was YES. [2022-11-21 13:45:50,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2301 conditions, 1137 events. 523/1137 cut-off events. For 392/486 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5642 event pairs, 105 based on Foata normal form. 94/1038 useless extension candidates. Maximal degree in co-relation 2292. Up to 467 conditions per place. [2022-11-21 13:45:50,815 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 56 selfloop transitions, 7 changer transitions 0/177 dead transitions. [2022-11-21 13:45:50,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 177 transitions, 569 flow [2022-11-21 13:45:50,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:45:50,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 13:45:50,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 966 transitions. [2022-11-21 13:45:50,821 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7419354838709677 [2022-11-21 13:45:50,822 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 966 transitions. [2022-11-21 13:45:50,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 966 transitions. [2022-11-21 13:45:50,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:45:50,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 966 transitions. [2022-11-21 13:45:50,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 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) [2022-11-21 13:45:50,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 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) [2022-11-21 13:45:50,830 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 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) [2022-11-21 13:45:50,830 INFO L175 Difference]: Start difference. First operand has 170 places, 165 transitions, 403 flow. Second operand 7 states and 966 transitions. [2022-11-21 13:45:50,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 177 transitions, 569 flow [2022-11-21 13:45:50,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 177 transitions, 560 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 13:45:50,836 INFO L231 Difference]: Finished difference. Result has 174 places, 166 transitions, 422 flow [2022-11-21 13:45:50,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=422, PETRI_PLACES=174, PETRI_TRANSITIONS=166} [2022-11-21 13:45:50,840 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 8 predicate places. [2022-11-21 13:45:50,841 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 166 transitions, 422 flow [2022-11-21 13:45:50,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.57142857142858) internal successors, (949), 7 states have internal predecessors, (949), 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) [2022-11-21 13:45:50,842 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:45:50,842 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:50,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 13:45:51,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-21 13:45:51,049 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 13:45:51,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:51,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1351753688, now seen corresponding path program 1 times [2022-11-21 13:45:51,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:51,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534594220] [2022-11-21 13:45:51,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:51,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:51,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:45:51,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:51,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534594220] [2022-11-21 13:45:51,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534594220] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:45:51,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669041895] [2022-11-21 13:45:51,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:51,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:51,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:51,289 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:45:51,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 13:45:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:51,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 13:45:51,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:45:51,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:45:51,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:45:51,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:45:51,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669041895] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:45:51,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:45:51,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-11-21 13:45:51,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641747720] [2022-11-21 13:45:51,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:45:51,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 13:45:51,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:51,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 13:45:51,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:45:51,959 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 186 [2022-11-21 13:45:51,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 166 transitions, 422 flow. Second operand has 14 states, 14 states have (on average 134.14285714285714) internal successors, (1878), 14 states have internal predecessors, (1878), 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) [2022-11-21 13:45:51,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:45:51,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 186 [2022-11-21 13:45:51,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:45:52,476 INFO L130 PetriNetUnfolder]: 677/1344 cut-off events. [2022-11-21 13:45:52,476 INFO L131 PetriNetUnfolder]: For 991/1343 co-relation queries the response was YES. [2022-11-21 13:45:52,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3172 conditions, 1344 events. 677/1344 cut-off events. For 991/1343 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 7897 event pairs, 113 based on Foata normal form. 352/1585 useless extension candidates. Maximal degree in co-relation 3161. Up to 419 conditions per place. [2022-11-21 13:45:52,491 INFO L137 encePairwiseOnDemand]: 173/186 looper letters, 71 selfloop transitions, 13 changer transitions 0/198 dead transitions. [2022-11-21 13:45:52,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 198 transitions, 700 flow [2022-11-21 13:45:52,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 13:45:52,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 13:45:52,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1373 transitions. [2022-11-21 13:45:52,496 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7381720430107527 [2022-11-21 13:45:52,497 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1373 transitions. [2022-11-21 13:45:52,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1373 transitions. [2022-11-21 13:45:52,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:45:52,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1373 transitions. [2022-11-21 13:45:52,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 137.3) internal successors, (1373), 10 states have internal predecessors, (1373), 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) [2022-11-21 13:45:52,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 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) [2022-11-21 13:45:52,507 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 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) [2022-11-21 13:45:52,507 INFO L175 Difference]: Start difference. First operand has 174 places, 166 transitions, 422 flow. Second operand 10 states and 1373 transitions. [2022-11-21 13:45:52,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 198 transitions, 700 flow [2022-11-21 13:45:52,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 198 transitions, 688 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 13:45:52,514 INFO L231 Difference]: Finished difference. Result has 180 places, 168 transitions, 457 flow [2022-11-21 13:45:52,514 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=457, PETRI_PLACES=180, PETRI_TRANSITIONS=168} [2022-11-21 13:45:52,515 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 14 predicate places. [2022-11-21 13:45:52,515 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 168 transitions, 457 flow [2022-11-21 13:45:52,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 134.14285714285714) internal successors, (1878), 14 states have internal predecessors, (1878), 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) [2022-11-21 13:45:52,517 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:45:52,517 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:52,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 13:45:52,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 13:45:52,726 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 13:45:52,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:52,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1522993346, now seen corresponding path program 1 times [2022-11-21 13:45:52,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:52,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081122065] [2022-11-21 13:45:52,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:52,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 13:45:53,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:53,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081122065] [2022-11-21 13:45:53,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081122065] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:45:53,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015918370] [2022-11-21 13:45:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:53,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:53,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:53,115 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:45:53,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 13:45:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:53,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 13:45:53,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:45:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 13:45:53,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:45:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 13:45:53,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015918370] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:45:53,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:45:53,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-21 13:45:53,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031170865] [2022-11-21 13:45:53,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:45:53,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 13:45:53,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:53,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 13:45:53,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:45:53,579 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 186 [2022-11-21 13:45:53,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 168 transitions, 457 flow. Second operand has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 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) [2022-11-21 13:45:53,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:45:53,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 186 [2022-11-21 13:45:53,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:45:54,441 INFO L130 PetriNetUnfolder]: 1320/2541 cut-off events. [2022-11-21 13:45:54,441 INFO L131 PetriNetUnfolder]: For 1372/1372 co-relation queries the response was YES. [2022-11-21 13:45:54,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5917 conditions, 2541 events. 1320/2541 cut-off events. For 1372/1372 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 18185 event pairs, 344 based on Foata normal form. 0/2447 useless extension candidates. Maximal degree in co-relation 5904. Up to 770 conditions per place. [2022-11-21 13:45:54,467 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 123 selfloop transitions, 28 changer transitions 2/293 dead transitions. [2022-11-21 13:45:54,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 293 transitions, 1173 flow [2022-11-21 13:45:54,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:45:54,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 13:45:54,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2271 transitions. [2022-11-21 13:45:54,473 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8721198156682027 [2022-11-21 13:45:54,473 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2271 transitions. [2022-11-21 13:45:54,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2271 transitions. [2022-11-21 13:45:54,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:45:54,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2271 transitions. [2022-11-21 13:45:54,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 162.21428571428572) internal successors, (2271), 14 states have internal predecessors, (2271), 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) [2022-11-21 13:45:54,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 186.0) internal successors, (2790), 15 states have internal predecessors, (2790), 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) [2022-11-21 13:45:54,486 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 186.0) internal successors, (2790), 15 states have internal predecessors, (2790), 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) [2022-11-21 13:45:54,487 INFO L175 Difference]: Start difference. First operand has 180 places, 168 transitions, 457 flow. Second operand 14 states and 2271 transitions. [2022-11-21 13:45:54,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 293 transitions, 1173 flow [2022-11-21 13:45:54,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 293 transitions, 1160 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 13:45:54,494 INFO L231 Difference]: Finished difference. Result has 198 places, 201 transitions, 689 flow [2022-11-21 13:45:54,494 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=689, PETRI_PLACES=198, PETRI_TRANSITIONS=201} [2022-11-21 13:45:54,495 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 32 predicate places. [2022-11-21 13:45:54,495 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 201 transitions, 689 flow [2022-11-21 13:45:54,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.66666666666666) internal successors, (1868), 12 states have internal predecessors, (1868), 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) [2022-11-21 13:45:54,496 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:45:54,497 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:54,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 13:45:54,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:54,709 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 13:45:54,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:54,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1402860156, now seen corresponding path program 2 times [2022-11-21 13:45:54,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:54,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145712369] [2022-11-21 13:45:54,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:54,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:55,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 13:45:55,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:55,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145712369] [2022-11-21 13:45:55,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145712369] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:45:55,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810163888] [2022-11-21 13:45:55,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:45:55,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:55,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:55,133 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:45:55,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 13:45:55,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 13:45:55,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:45:55,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 13:45:55,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:45:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 13:45:55,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:45:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 13:45:55,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810163888] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:45:55,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:45:55,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-21 13:45:55,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733918265] [2022-11-21 13:45:55,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:45:55,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 13:45:55,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:55,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 13:45:55,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:45:55,695 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 186 [2022-11-21 13:45:55,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 201 transitions, 689 flow. Second operand has 11 states, 11 states have (on average 155.36363636363637) internal successors, (1709), 11 states have internal predecessors, (1709), 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) [2022-11-21 13:45:55,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:45:55,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 186 [2022-11-21 13:45:55,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:45:56,364 INFO L130 PetriNetUnfolder]: 987/1997 cut-off events. [2022-11-21 13:45:56,365 INFO L131 PetriNetUnfolder]: For 3351/3351 co-relation queries the response was YES. [2022-11-21 13:45:56,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5713 conditions, 1997 events. 987/1997 cut-off events. For 3351/3351 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 13872 event pairs, 209 based on Foata normal form. 53/2034 useless extension candidates. Maximal degree in co-relation 5689. Up to 645 conditions per place. [2022-11-21 13:45:56,385 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 95 selfloop transitions, 32 changer transitions 3/270 dead transitions. [2022-11-21 13:45:56,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 270 transitions, 1295 flow [2022-11-21 13:45:56,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 13:45:56,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 13:45:56,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1619 transitions. [2022-11-21 13:45:56,391 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8704301075268818 [2022-11-21 13:45:56,391 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1619 transitions. [2022-11-21 13:45:56,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1619 transitions. [2022-11-21 13:45:56,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:45:56,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1619 transitions. [2022-11-21 13:45:56,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 161.9) internal successors, (1619), 10 states have internal predecessors, (1619), 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) [2022-11-21 13:45:56,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 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) [2022-11-21 13:45:56,409 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 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) [2022-11-21 13:45:56,409 INFO L175 Difference]: Start difference. First operand has 198 places, 201 transitions, 689 flow. Second operand 10 states and 1619 transitions. [2022-11-21 13:45:56,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 270 transitions, 1295 flow [2022-11-21 13:45:56,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 270 transitions, 1295 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 13:45:56,431 INFO L231 Difference]: Finished difference. Result has 214 places, 213 transitions, 933 flow [2022-11-21 13:45:56,431 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=933, PETRI_PLACES=214, PETRI_TRANSITIONS=213} [2022-11-21 13:45:56,432 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 48 predicate places. [2022-11-21 13:45:56,433 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 213 transitions, 933 flow [2022-11-21 13:45:56,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 155.36363636363637) internal successors, (1709), 11 states have internal predecessors, (1709), 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) [2022-11-21 13:45:56,434 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:45:56,434 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:56,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 13:45:56,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:56,642 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 13:45:56,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:56,643 INFO L85 PathProgramCache]: Analyzing trace with hash -249731072, now seen corresponding path program 3 times [2022-11-21 13:45:56,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:56,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464107204] [2022-11-21 13:45:56,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:56,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 13:45:56,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:56,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464107204] [2022-11-21 13:45:56,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464107204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:45:56,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413346692] [2022-11-21 13:45:56,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 13:45:56,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:56,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:56,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:45:56,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 13:45:57,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 13:45:57,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:45:57,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 13:45:57,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:45:57,338 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 13:45:57,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:45:57,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 13:45:57,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413346692] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:45:57,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:45:57,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 18 [2022-11-21 13:45:57,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496663683] [2022-11-21 13:45:57,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:45:57,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 13:45:57,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:57,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 13:45:57,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-11-21 13:45:57,516 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 186 [2022-11-21 13:45:57,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 213 transitions, 933 flow. Second operand has 18 states, 18 states have (on average 125.61111111111111) internal successors, (2261), 18 states have internal predecessors, (2261), 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) [2022-11-21 13:45:57,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:45:57,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 186 [2022-11-21 13:45:57,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:46:04,121 INFO L130 PetriNetUnfolder]: 5839/9970 cut-off events. [2022-11-21 13:46:04,122 INFO L131 PetriNetUnfolder]: For 32663/34504 co-relation queries the response was YES. [2022-11-21 13:46:04,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34800 conditions, 9970 events. 5839/9970 cut-off events. For 32663/34504 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 78375 event pairs, 156 based on Foata normal form. 2072/11895 useless extension candidates. Maximal degree in co-relation 34769. Up to 1300 conditions per place. [2022-11-21 13:46:04,206 INFO L137 encePairwiseOnDemand]: 153/186 looper letters, 0 selfloop transitions, 0 changer transitions 978/978 dead transitions. [2022-11-21 13:46:04,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 978 transitions, 7021 flow [2022-11-21 13:46:04,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-11-21 13:46:04,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2022-11-21 13:46:04,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 11234 transitions. [2022-11-21 13:46:04,224 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6786275220490516 [2022-11-21 13:46:04,225 INFO L72 ComplementDD]: Start complementDD. Operand 89 states and 11234 transitions. [2022-11-21 13:46:04,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 11234 transitions. [2022-11-21 13:46:04,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:46:04,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 89 states and 11234 transitions. [2022-11-21 13:46:04,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 90 states, 89 states have (on average 126.2247191011236) internal successors, (11234), 89 states have internal predecessors, (11234), 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) [2022-11-21 13:46:04,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 90 states, 90 states have (on average 186.0) internal successors, (16740), 90 states have internal predecessors, (16740), 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) [2022-11-21 13:46:04,282 INFO L81 ComplementDD]: Finished complementDD. Result has 90 states, 90 states have (on average 186.0) internal successors, (16740), 90 states have internal predecessors, (16740), 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) [2022-11-21 13:46:04,282 INFO L175 Difference]: Start difference. First operand has 214 places, 213 transitions, 933 flow. Second operand 89 states and 11234 transitions. [2022-11-21 13:46:04,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 978 transitions, 7021 flow [2022-11-21 13:46:04,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 978 transitions, 6762 flow, removed 49 selfloop flow, removed 4 redundant places. [2022-11-21 13:46:04,488 INFO L231 Difference]: Finished difference. Result has 286 places, 0 transitions, 0 flow [2022-11-21 13:46:04,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=89, PETRI_FLOW=0, PETRI_PLACES=286, PETRI_TRANSITIONS=0} [2022-11-21 13:46:04,489 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 120 predicate places. [2022-11-21 13:46:04,489 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 0 transitions, 0 flow [2022-11-21 13:46:04,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 125.61111111111111) internal successors, (2261), 18 states have internal predecessors, (2261), 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) [2022-11-21 13:46:04,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-21 13:46:04,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-21 13:46:04,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-21 13:46:04,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-21 13:46:04,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 13:46:04,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 13:46:04,701 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:46:04,705 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 13:46:04,705 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 13:46:04,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:46:04 BasicIcfg [2022-11-21 13:46:04,709 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 13:46:04,709 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 13:46:04,709 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 13:46:04,710 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 13:46:04,710 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:45:38" (3/4) ... [2022-11-21 13:46:04,712 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 13:46:04,719 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-21 13:46:04,720 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-21 13:46:04,720 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-21 13:46:04,728 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2022-11-21 13:46:04,728 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-21 13:46:04,728 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 13:46:04,729 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 13:46:04,776 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 13:46:04,776 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 13:46:04,777 INFO L158 Benchmark]: Toolchain (without parser) took 27184.45ms. Allocated memory was 148.9MB in the beginning and 492.8MB in the end (delta: 343.9MB). Free memory was 110.5MB in the beginning and 170.2MB in the end (delta: -59.7MB). Peak memory consumption was 282.7MB. Max. memory is 16.1GB. [2022-11-21 13:46:04,778 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 86.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:46:04,778 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.09ms. Allocated memory is still 148.9MB. Free memory was 110.5MB in the beginning and 114.2MB in the end (delta: -3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 13:46:04,778 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.57ms. Allocated memory is still 148.9MB. Free memory was 114.2MB in the beginning and 112.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:46:04,779 INFO L158 Benchmark]: Boogie Preprocessor took 36.08ms. Allocated memory is still 148.9MB. Free memory was 112.1MB in the beginning and 110.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:46:04,779 INFO L158 Benchmark]: RCFGBuilder took 741.82ms. Allocated memory is still 148.9MB. Free memory was 110.6MB in the beginning and 91.1MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-21 13:46:04,779 INFO L158 Benchmark]: TraceAbstraction took 25934.00ms. Allocated memory was 148.9MB in the beginning and 492.8MB in the end (delta: 343.9MB). Free memory was 90.5MB in the beginning and 174.4MB in the end (delta: -83.9MB). Peak memory consumption was 328.3MB. Max. memory is 16.1GB. [2022-11-21 13:46:04,780 INFO L158 Benchmark]: Witness Printer took 67.21ms. Allocated memory is still 492.8MB. Free memory was 174.4MB in the beginning and 170.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 13:46:04,782 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 86.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.09ms. Allocated memory is still 148.9MB. Free memory was 110.5MB in the beginning and 114.2MB in the end (delta: -3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.57ms. Allocated memory is still 148.9MB. Free memory was 114.2MB in the beginning and 112.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.08ms. Allocated memory is still 148.9MB. Free memory was 112.1MB in the beginning and 110.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 741.82ms. Allocated memory is still 148.9MB. Free memory was 110.6MB in the beginning and 91.1MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 25934.00ms. Allocated memory was 148.9MB in the beginning and 492.8MB in the end (delta: 343.9MB). Free memory was 90.5MB in the beginning and 174.4MB in the end (delta: -83.9MB). Peak memory consumption was 328.3MB. Max. memory is 16.1GB. * Witness Printer took 67.21ms. Allocated memory is still 492.8MB. Free memory was 174.4MB in the beginning and 170.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 103]: 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 7 procedures, 206 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 25.8s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 15.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2346 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2346 mSDsluCounter, 818 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 630 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3512 IncrementalHoareTripleChecker+Invalid, 3583 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 188 mSDtfsCounter, 3512 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2095 GetRequests, 1851 SyntacticMatches, 13 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3810 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=933occurred in iteration=9, InterpolantAutomatonStates: 182, 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: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 2316 NumberOfCodeBlocks, 2310 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 3197 ConstructedInterpolants, 0 QuantifiedInterpolants, 9792 SizeOfPredicates, 29 NumberOfNonLiveVariables, 2097 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 22 InterpolantComputations, 6 PerfectInterpolantSequences, 78/95 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! [2022-11-21 13:46:04,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b61860-7e7c-4e7d-a17e-28b344cb9d5a/bin/uautomizer-vX5HgA9Q3a/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