./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS --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 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa --- 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-4e7fbc6 [2022-11-23 02:12:44,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:12:44,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:12:44,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:12:44,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:12:44,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:12:44,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:12:44,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:12:44,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:12:44,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:12:44,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:12:44,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:12:44,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:12:44,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:12:44,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:12:44,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:12:44,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:12:44,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:12:44,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:12:44,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:12:44,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:12:44,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:12:44,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:12:44,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:12:44,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:12:44,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:12:44,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:12:44,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:12:44,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:12:44,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:12:44,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:12:44,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:12:44,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:12:44,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:12:44,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:12:44,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:12:44,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:12:44,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:12:44,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:12:44,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:12:44,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:12:44,652 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 02:12:44,692 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:12:44,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:12:44,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:12:44,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:12:44,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:12:44,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:12:44,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:12:44,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:12:44,695 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:12:44,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:12:44,697 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:12:44,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:12:44,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:12:44,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:12:44,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:12:44,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:12:44,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:12:44,698 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:12:44,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:12:44,698 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:12:44,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:12:44,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:12:44,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:12:44,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:12:44,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:12:44,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:12:44,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:12:44,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:12:44,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:12:44,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:12:44,700 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:12:44,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:12:44,701 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:12:44,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:12:44,701 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa [2022-11-23 02:12:45,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:12:45,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:12:45,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:12:45,076 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:12:45,076 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:12:45,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2022-11-23 02:12:48,320 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:12:48,675 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:12:48,676 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2022-11-23 02:12:48,692 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/data/d0fb2b336/e55207f9ccda4343bc95a8cc45bfd85c/FLAG1a841d2e6 [2022-11-23 02:12:48,711 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/data/d0fb2b336/e55207f9ccda4343bc95a8cc45bfd85c [2022-11-23 02:12:48,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:12:48,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:12:48,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:12:48,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:12:48,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:12:48,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:12:48" (1/1) ... [2022-11-23 02:12:48,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69054f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:48, skipping insertion in model container [2022-11-23 02:12:48,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:12:48" (1/1) ... [2022-11-23 02:12:48,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:12:48,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:12:49,220 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_def28b09-15a5-4d98-8b08-2f7f0f418365/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2022-11-23 02:12:49,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:12:49,383 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:12:49,455 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_def28b09-15a5-4d98-8b08-2f7f0f418365/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2022-11-23 02:12:49,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:12:49,569 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:12:49,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:49 WrapperNode [2022-11-23 02:12:49,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:12:49,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:12:49,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:12:49,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:12:49,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:49" (1/1) ... [2022-11-23 02:12:49,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:49" (1/1) ... [2022-11-23 02:12:49,671 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 224 [2022-11-23 02:12:49,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:12:49,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:12:49,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:12:49,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:12:49,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:49" (1/1) ... [2022-11-23 02:12:49,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:49" (1/1) ... [2022-11-23 02:12:49,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:49" (1/1) ... [2022-11-23 02:12:49,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:49" (1/1) ... [2022-11-23 02:12:49,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:49" (1/1) ... [2022-11-23 02:12:49,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:49" (1/1) ... [2022-11-23 02:12:49,742 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:49" (1/1) ... [2022-11-23 02:12:49,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:49" (1/1) ... [2022-11-23 02:12:49,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:12:49,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:12:49,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:12:49,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:12:49,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:49" (1/1) ... [2022-11-23 02:12:49,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:12:49,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:12:49,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:12:49,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:12:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:12:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 02:12:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-23 02:12:49,867 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-23 02:12:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:12:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:12:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-23 02:12:49,868 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-23 02:12:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:12:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 02:12:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 02:12:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:12:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 02:12:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:12:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:12:49,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:12:49,872 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 02:12:50,103 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:12:50,109 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:12:50,665 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:12:50,675 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:12:50,676 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-23 02:12:50,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:12:50 BoogieIcfgContainer [2022-11-23 02:12:50,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:12:50,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:12:50,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:12:50,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:12:50,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:12:48" (1/3) ... [2022-11-23 02:12:50,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7034de97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:12:50, skipping insertion in model container [2022-11-23 02:12:50,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:12:49" (2/3) ... [2022-11-23 02:12:50,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7034de97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:12:50, skipping insertion in model container [2022-11-23 02:12:50,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:12:50" (3/3) ... [2022-11-23 02:12:50,697 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2022-11-23 02:12:50,709 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 02:12:50,720 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:12:50,721 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 02:12:50,721 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:12:50,890 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-23 02:12:50,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 238 transitions, 498 flow [2022-11-23 02:12:51,086 INFO L130 PetriNetUnfolder]: 54/440 cut-off events. [2022-11-23 02:12:51,086 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-11-23 02:12:51,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 440 events. 54/440 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1753 event pairs, 0 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 226. Up to 8 conditions per place. [2022-11-23 02:12:51,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 238 transitions, 498 flow [2022-11-23 02:12:51,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 236 transitions, 488 flow [2022-11-23 02:12:51,111 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:12:51,127 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 236 transitions, 488 flow [2022-11-23 02:12:51,130 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 236 transitions, 488 flow [2022-11-23 02:12:51,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 236 transitions, 488 flow [2022-11-23 02:12:51,266 INFO L130 PetriNetUnfolder]: 50/428 cut-off events. [2022-11-23 02:12:51,267 INFO L131 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2022-11-23 02:12:51,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 428 events. 50/428 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1680 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 214. Up to 8 conditions per place. [2022-11-23 02:12:51,288 INFO L119 LiptonReduction]: Number of co-enabled transitions 16560 [2022-11-23 02:13:12,681 INFO L134 LiptonReduction]: Checked pairs total: 25337 [2022-11-23 02:13:12,681 INFO L136 LiptonReduction]: Total number of compositions: 201 [2022-11-23 02:13:12,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:13:12,706 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;@4a968db6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:13:12,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 02:13:12,712 INFO L130 PetriNetUnfolder]: 1/20 cut-off events. [2022-11-23 02:13:12,712 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:13:12,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:12,713 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-23 02:13:12,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 02:13:12,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:12,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1665815171, now seen corresponding path program 1 times [2022-11-23 02:13:12,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:12,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755179940] [2022-11-23 02:13:12,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:12,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:13:13,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:13,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755179940] [2022-11-23 02:13:13,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755179940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:13,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:13,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:13:13,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077964971] [2022-11-23 02:13:13,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:13,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:13:13,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:13,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:13:13,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:13:13,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 439 [2022-11-23 02:13:13,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 65 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 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) [2022-11-23 02:13:13,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:13,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 439 [2022-11-23 02:13:13,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:14,144 INFO L130 PetriNetUnfolder]: 2945/4945 cut-off events. [2022-11-23 02:13:14,144 INFO L131 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2022-11-23 02:13:14,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9640 conditions, 4945 events. 2945/4945 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 28061 event pairs, 2736 based on Foata normal form. 249/4347 useless extension candidates. Maximal degree in co-relation 8599. Up to 4624 conditions per place. [2022-11-23 02:13:14,164 INFO L137 encePairwiseOnDemand]: 425/439 looper letters, 46 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2022-11-23 02:13:14,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 222 flow [2022-11-23 02:13:14,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:13:14,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:13:14,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 690 transitions. [2022-11-23 02:13:14,179 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5239179954441914 [2022-11-23 02:13:14,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 690 transitions. [2022-11-23 02:13:14,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 690 transitions. [2022-11-23 02:13:14,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:14,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 690 transitions. [2022-11-23 02:13:14,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 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) [2022-11-23 02:13:14,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 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) [2022-11-23 02:13:14,208 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 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) [2022-11-23 02:13:14,210 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 146 flow. Second operand 3 states and 690 transitions. [2022-11-23 02:13:14,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 222 flow [2022-11-23 02:13:14,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 222 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:13:14,220 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 136 flow [2022-11-23 02:13:14,222 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2022-11-23 02:13:14,226 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2022-11-23 02:13:14,226 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 136 flow [2022-11-23 02:13:14,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 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) [2022-11-23 02:13:14,227 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:14,227 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 02:13:14,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:13:14,228 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 02:13:14,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:14,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1613844436, now seen corresponding path program 1 times [2022-11-23 02:13:14,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:14,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078257465] [2022-11-23 02:13:14,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:14,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:13:14,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:14,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078257465] [2022-11-23 02:13:14,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078257465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:13:14,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574163649] [2022-11-23 02:13:14,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:14,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:13:14,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:13:14,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:13:14,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:13:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:14,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:13:14,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:13:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:13:14,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:13:14,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:13:14,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574163649] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:13:14,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:13:14,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-23 02:13:14,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526650985] [2022-11-23 02:13:14,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:13:14,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:13:14,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:14,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:13:14,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:13:14,646 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 439 [2022-11-23 02:13:14,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 210.57142857142858) internal successors, (1474), 7 states have internal predecessors, (1474), 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) [2022-11-23 02:13:14,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:14,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 439 [2022-11-23 02:13:14,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:15,685 INFO L130 PetriNetUnfolder]: 2945/4948 cut-off events. [2022-11-23 02:13:15,685 INFO L131 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2022-11-23 02:13:15,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9656 conditions, 4948 events. 2945/4948 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 28056 event pairs, 2736 based on Foata normal form. 0/4101 useless extension candidates. Maximal degree in co-relation 9643. Up to 4624 conditions per place. [2022-11-23 02:13:15,707 INFO L137 encePairwiseOnDemand]: 436/439 looper letters, 46 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2022-11-23 02:13:15,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 250 flow [2022-11-23 02:13:15,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:13:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:13:15,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1308 transitions. [2022-11-23 02:13:15,712 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49658314350797267 [2022-11-23 02:13:15,712 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1308 transitions. [2022-11-23 02:13:15,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1308 transitions. [2022-11-23 02:13:15,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:15,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1308 transitions. [2022-11-23 02:13:15,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 218.0) internal successors, (1308), 6 states have internal predecessors, (1308), 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) [2022-11-23 02:13:15,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 439.0) internal successors, (3073), 7 states have internal predecessors, (3073), 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) [2022-11-23 02:13:15,723 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 439.0) internal successors, (3073), 7 states have internal predecessors, (3073), 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) [2022-11-23 02:13:15,724 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 136 flow. Second operand 6 states and 1308 transitions. [2022-11-23 02:13:15,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 250 flow [2022-11-23 02:13:15,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 246 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-23 02:13:15,728 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 168 flow [2022-11-23 02:13:15,728 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2022-11-23 02:13:15,729 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2022-11-23 02:13:15,729 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 168 flow [2022-11-23 02:13:15,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 210.57142857142858) internal successors, (1474), 7 states have internal predecessors, (1474), 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) [2022-11-23 02:13:15,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:15,731 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-11-23 02:13:15,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 02:13:15,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-23 02:13:15,936 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 02:13:15,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:15,937 INFO L85 PathProgramCache]: Analyzing trace with hash 473456957, now seen corresponding path program 2 times [2022-11-23 02:13:15,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:15,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102798690] [2022-11-23 02:13:15,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:15,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:13:16,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:16,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102798690] [2022-11-23 02:13:16,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102798690] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:13:16,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460591311] [2022-11-23 02:13:16,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:13:16,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:13:16,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:13:16,227 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:13:16,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:13:16,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:13:16,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:13:16,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 02:13:16,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:13:16,459 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:13:16,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:13:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:13:16,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460591311] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:13:16,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:13:16,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-23 02:13:16,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839019648] [2022-11-23 02:13:16,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:13:16,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 02:13:16,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:16,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 02:13:16,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:13:16,668 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 439 [2022-11-23 02:13:16,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 168 flow. Second operand has 13 states, 13 states have (on average 210.30769230769232) internal successors, (2734), 13 states have internal predecessors, (2734), 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) [2022-11-23 02:13:16,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:16,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 439 [2022-11-23 02:13:16,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:17,830 INFO L130 PetriNetUnfolder]: 2945/4954 cut-off events. [2022-11-23 02:13:17,831 INFO L131 PetriNetUnfolder]: For 125/125 co-relation queries the response was YES. [2022-11-23 02:13:17,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9693 conditions, 4954 events. 2945/4954 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 28083 event pairs, 2736 based on Foata normal form. 6/4114 useless extension candidates. Maximal degree in co-relation 9634. Up to 4624 conditions per place. [2022-11-23 02:13:17,857 INFO L137 encePairwiseOnDemand]: 436/439 looper letters, 46 selfloop transitions, 11 changer transitions 0/64 dead transitions. [2022-11-23 02:13:17,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 318 flow [2022-11-23 02:13:17,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:13:17,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 02:13:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2571 transitions. [2022-11-23 02:13:17,865 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4880410022779043 [2022-11-23 02:13:17,866 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2571 transitions. [2022-11-23 02:13:17,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2571 transitions. [2022-11-23 02:13:17,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:17,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2571 transitions. [2022-11-23 02:13:17,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 214.25) internal successors, (2571), 12 states have internal predecessors, (2571), 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) [2022-11-23 02:13:17,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 439.0) internal successors, (5707), 13 states have internal predecessors, (5707), 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) [2022-11-23 02:13:17,888 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 439.0) internal successors, (5707), 13 states have internal predecessors, (5707), 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) [2022-11-23 02:13:17,888 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 168 flow. Second operand 12 states and 2571 transitions. [2022-11-23 02:13:17,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 318 flow [2022-11-23 02:13:17,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 64 transitions, 304 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-23 02:13:17,892 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 238 flow [2022-11-23 02:13:17,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=238, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2022-11-23 02:13:17,893 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2022-11-23 02:13:17,893 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 238 flow [2022-11-23 02:13:17,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 210.30769230769232) internal successors, (2734), 13 states have internal predecessors, (2734), 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) [2022-11-23 02:13:17,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:17,895 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-11-23 02:13:17,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:13:18,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:13:18,103 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 02:13:18,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:18,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1483232547, now seen corresponding path program 3 times [2022-11-23 02:13:18,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:18,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826721914] [2022-11-23 02:13:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:18,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:18,715 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:13:18,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:18,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826721914] [2022-11-23 02:13:18,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826721914] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:13:18,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122837118] [2022-11-23 02:13:18,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:13:18,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:13:18,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:13:18,721 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:13:18,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:17:51,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-23 02:17:51,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:17:51,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 02:17:51,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:17:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:17:51,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:17:51,498 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:17:51,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122837118] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:17:51,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:17:51,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-11-23 02:17:51,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916904524] [2022-11-23 02:17:51,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:17:51,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 02:17:51,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:17:51,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 02:17:51,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-23 02:17:51,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 439 [2022-11-23 02:17:51,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 238 flow. Second operand has 25 states, 25 states have (on average 210.16) internal successors, (5254), 25 states have internal predecessors, (5254), 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) [2022-11-23 02:17:51,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:17:51,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 439 [2022-11-23 02:17:51,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:17:52,979 INFO L130 PetriNetUnfolder]: 2945/4966 cut-off events. [2022-11-23 02:17:52,980 INFO L131 PetriNetUnfolder]: For 568/568 co-relation queries the response was YES. [2022-11-23 02:17:53,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9777 conditions, 4966 events. 2945/4966 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 28040 event pairs, 2736 based on Foata normal form. 12/4132 useless extension candidates. Maximal degree in co-relation 9640. Up to 4624 conditions per place. [2022-11-23 02:17:53,027 INFO L137 encePairwiseOnDemand]: 436/439 looper letters, 46 selfloop transitions, 23 changer transitions 0/76 dead transitions. [2022-11-23 02:17:53,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 76 transitions, 472 flow [2022-11-23 02:17:53,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 02:17:53,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-23 02:17:53,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5097 transitions. [2022-11-23 02:17:53,043 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48376993166287013 [2022-11-23 02:17:53,043 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5097 transitions. [2022-11-23 02:17:53,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5097 transitions. [2022-11-23 02:17:53,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:17:53,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5097 transitions. [2022-11-23 02:17:53,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 212.375) internal successors, (5097), 24 states have internal predecessors, (5097), 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) [2022-11-23 02:17:53,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 439.0) internal successors, (10975), 25 states have internal predecessors, (10975), 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) [2022-11-23 02:17:53,086 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 439.0) internal successors, (10975), 25 states have internal predecessors, (10975), 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) [2022-11-23 02:17:53,086 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 238 flow. Second operand 24 states and 5097 transitions. [2022-11-23 02:17:53,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 76 transitions, 472 flow [2022-11-23 02:17:53,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 76 transitions, 400 flow, removed 31 selfloop flow, removed 5 redundant places. [2022-11-23 02:17:53,096 INFO L231 Difference]: Finished difference. Result has 110 places, 76 transitions, 358 flow [2022-11-23 02:17:53,096 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=358, PETRI_PLACES=110, PETRI_TRANSITIONS=76} [2022-11-23 02:17:53,100 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2022-11-23 02:17:53,100 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 76 transitions, 358 flow [2022-11-23 02:17:53,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 210.16) internal successors, (5254), 25 states have internal predecessors, (5254), 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) [2022-11-23 02:17:53,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:17:53,106 INFO L209 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2022-11-23 02:17:53,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:17:53,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:17:53,320 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 02:17:53,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:17:53,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1977674211, now seen corresponding path program 4 times [2022-11-23 02:17:53,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:17:53,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573205925] [2022-11-23 02:17:53,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:17:53,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:17:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:17:55,101 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:17:55,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:17:55,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573205925] [2022-11-23 02:17:55,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573205925] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:17:55,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760170780] [2022-11-23 02:17:55,103 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 02:17:55,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:17:55,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:17:55,105 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:17:55,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:17:55,674 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 02:17:55,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:17:55,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 02:17:55,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:17:55,798 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:17:55,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:17:56,858 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:17:56,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760170780] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:17:56,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:17:56,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2022-11-23 02:17:56,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832663968] [2022-11-23 02:17:56,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:17:56,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-23 02:17:56,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:17:56,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-23 02:17:56,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-23 02:17:57,298 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 439 [2022-11-23 02:17:57,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 76 transitions, 358 flow. Second operand has 49 states, 49 states have (on average 210.08163265306123) internal successors, (10294), 49 states have internal predecessors, (10294), 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) [2022-11-23 02:17:57,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:17:57,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 439 [2022-11-23 02:17:57,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:17:58,939 INFO L130 PetriNetUnfolder]: 2945/4990 cut-off events. [2022-11-23 02:17:58,939 INFO L131 PetriNetUnfolder]: For 5338/5338 co-relation queries the response was YES. [2022-11-23 02:17:58,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9921 conditions, 4990 events. 2945/4990 cut-off events. For 5338/5338 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 28040 event pairs, 2736 based on Foata normal form. 24/4168 useless extension candidates. Maximal degree in co-relation 9652. Up to 4624 conditions per place. [2022-11-23 02:17:58,989 INFO L137 encePairwiseOnDemand]: 436/439 looper letters, 46 selfloop transitions, 47 changer transitions 0/100 dead transitions. [2022-11-23 02:17:58,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 100 transitions, 736 flow [2022-11-23 02:17:58,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-23 02:17:58,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-23 02:17:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 10149 transitions. [2022-11-23 02:17:59,013 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4816343963553531 [2022-11-23 02:17:59,013 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 10149 transitions. [2022-11-23 02:17:59,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 10149 transitions. [2022-11-23 02:17:59,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:17:59,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 10149 transitions. [2022-11-23 02:17:59,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 211.4375) internal successors, (10149), 48 states have internal predecessors, (10149), 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) [2022-11-23 02:17:59,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 439.0) internal successors, (21511), 49 states have internal predecessors, (21511), 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) [2022-11-23 02:17:59,078 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 439.0) internal successors, (21511), 49 states have internal predecessors, (21511), 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) [2022-11-23 02:17:59,078 INFO L175 Difference]: Start difference. First operand has 110 places, 76 transitions, 358 flow. Second operand 48 states and 10149 transitions. [2022-11-23 02:17:59,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 100 transitions, 736 flow [2022-11-23 02:17:59,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 100 transitions, 592 flow, removed 61 selfloop flow, removed 11 redundant places. [2022-11-23 02:17:59,091 INFO L231 Difference]: Finished difference. Result has 170 places, 100 transitions, 598 flow [2022-11-23 02:17:59,092 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=598, PETRI_PLACES=170, PETRI_TRANSITIONS=100} [2022-11-23 02:17:59,094 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, 116 predicate places. [2022-11-23 02:17:59,095 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 100 transitions, 598 flow [2022-11-23 02:17:59,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 210.08163265306123) internal successors, (10294), 49 states have internal predecessors, (10294), 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) [2022-11-23 02:17:59,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:17:59,098 INFO L209 CegarLoopForPetriNet]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2022-11-23 02:17:59,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:17:59,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:17:59,315 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 02:17:59,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:17:59,315 INFO L85 PathProgramCache]: Analyzing trace with hash -127316835, now seen corresponding path program 5 times [2022-11-23 02:17:59,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:17:59,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655232206] [2022-11-23 02:17:59,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:17:59,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:17:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:18:04,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:04,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655232206] [2022-11-23 02:18:04,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655232206] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:18:04,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410647712] [2022-11-23 02:18:04,682 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 02:18:04,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:04,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:18:04,684 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:18:04,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_def28b09-15a5-4d98-8b08-2f7f0f418365/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process