./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/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_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 --- 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 02:53:45,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:53:45,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:53:45,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:53:45,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:53:45,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:53:45,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:53:45,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:53:45,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:53:45,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:53:45,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:53:45,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:53:45,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:53:45,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:53:45,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:53:45,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:53:45,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:53:45,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:53:45,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:53:45,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:53:45,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:53:45,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:53:45,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:53:45,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:53:45,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:53:45,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:53:45,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:53:45,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:53:45,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:53:45,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:53:45,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:53:45,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:53:45,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:53:45,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:53:45,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:53:45,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:53:45,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:53:45,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:53:45,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:53:45,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:53:45,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:53:45,665 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-23 02:53:45,714 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:53:45,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:53:45,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:53:45,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:53:45,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:53:45,718 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:53:45,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:53:45,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:53:45,719 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:53:45,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:53:45,721 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:53:45,722 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:53:45,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:53:45,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:53:45,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:53:45,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:53:45,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:53:45,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:53:45,724 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 02:53:45,724 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:53:45,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:53:45,724 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:53:45,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:53:45,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:53:45,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:53:45,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:53:45,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:53:45,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:53:45,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:53:45,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:53:45,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:53:45,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:53:45,728 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:53:45,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:53:45,728 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:53:45,729 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:53:45,729 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_959903af-9155-4062-b229-c4829685d466/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 [2022-11-23 02:53:46,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:53:46,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:53:46,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:53:46,082 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:53:46,083 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:53:46,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2022-11-23 02:53:49,388 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:53:49,708 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:53:49,709 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2022-11-23 02:53:49,722 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/data/65ce188d1/8c4b6d08720549d9986abb548e1d87bd/FLAGe5a8484a4 [2022-11-23 02:53:49,739 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/data/65ce188d1/8c4b6d08720549d9986abb548e1d87bd [2022-11-23 02:53:49,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:53:49,744 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:53:49,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:53:49,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:53:49,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:53:49,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:53:49" (1/1) ... [2022-11-23 02:53:49,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53228c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:49, skipping insertion in model container [2022-11-23 02:53:49,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:53:49" (1/1) ... [2022-11-23 02:53:49,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:53:49,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:53:50,179 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_959903af-9155-4062-b229-c4829685d466/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i[30212,30225] [2022-11-23 02:53:50,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:53:50,256 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:53:50,320 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_959903af-9155-4062-b229-c4829685d466/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i[30212,30225] [2022-11-23 02:53:50,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:53:50,374 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:53:50,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:50 WrapperNode [2022-11-23 02:53:50,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:53:50,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:53:50,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:53:50,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:53:50,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:50" (1/1) ... [2022-11-23 02:53:50,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:50" (1/1) ... [2022-11-23 02:53:50,464 INFO L138 Inliner]: procedures = 173, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 143 [2022-11-23 02:53:50,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:53:50,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:53:50,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:53:50,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:53:50,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:50" (1/1) ... [2022-11-23 02:53:50,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:50" (1/1) ... [2022-11-23 02:53:50,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:50" (1/1) ... [2022-11-23 02:53:50,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:50" (1/1) ... [2022-11-23 02:53:50,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:50" (1/1) ... [2022-11-23 02:53:50,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:50" (1/1) ... [2022-11-23 02:53:50,527 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:50" (1/1) ... [2022-11-23 02:53:50,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:50" (1/1) ... [2022-11-23 02:53:50,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:53:50,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:53:50,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:53:50,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:53:50,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:50" (1/1) ... [2022-11-23 02:53:50,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:53:50,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:53:50,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:53:50,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:53:50,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:53:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:53:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 02:53:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:53:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:53:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-23 02:53:50,647 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-23 02:53:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:53:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:53:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:53:50,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:53:50,650 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 02:53:50,933 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:53:50,949 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:53:51,327 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:53:51,337 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:53:51,337 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-23 02:53:51,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:53:51 BoogieIcfgContainer [2022-11-23 02:53:51,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:53:51,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:53:51,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:53:51,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:53:51,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:53:49" (1/3) ... [2022-11-23 02:53:51,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af83c77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:53:51, skipping insertion in model container [2022-11-23 02:53:51,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:50" (2/3) ... [2022-11-23 02:53:51,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af83c77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:53:51, skipping insertion in model container [2022-11-23 02:53:51,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:53:51" (3/3) ... [2022-11-23 02:53:51,352 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2022-11-23 02:53:51,363 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 02:53:51,375 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:53:51,376 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-23 02:53:51,376 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:53:51,461 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-23 02:53:51,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 165 transitions, 338 flow [2022-11-23 02:53:51,608 INFO L130 PetriNetUnfolder]: 26/253 cut-off events. [2022-11-23 02:53:51,609 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:53:51,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 253 events. 26/253 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 741 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 124. Up to 6 conditions per place. [2022-11-23 02:53:51,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 165 transitions, 338 flow [2022-11-23 02:53:51,625 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 162 transitions, 332 flow [2022-11-23 02:53:51,630 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:53:51,647 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 162 transitions, 332 flow [2022-11-23 02:53:51,650 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 162 transitions, 332 flow [2022-11-23 02:53:51,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 162 transitions, 332 flow [2022-11-23 02:53:51,715 INFO L130 PetriNetUnfolder]: 25/250 cut-off events. [2022-11-23 02:53:51,716 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:53:51,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 250 events. 25/250 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 728 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 124. Up to 6 conditions per place. [2022-11-23 02:53:51,722 INFO L119 LiptonReduction]: Number of co-enabled transitions 4116 [2022-11-23 02:53:57,768 INFO L134 LiptonReduction]: Checked pairs total: 5393 [2022-11-23 02:53:57,769 INFO L136 LiptonReduction]: Total number of compositions: 154 [2022-11-23 02:53:57,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:53:57,793 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;@57c2be8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:53:57,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-23 02:53:57,798 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2022-11-23 02:53:57,799 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:53:57,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:53:57,800 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 02:53:57,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-23 02:53:57,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:53:57,806 INFO L85 PathProgramCache]: Analyzing trace with hash 18539642, now seen corresponding path program 1 times [2022-11-23 02:53:57,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:53:57,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409514691] [2022-11-23 02:53:57,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:53:57,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:53:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:53:58,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:53:58,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409514691] [2022-11-23 02:53:58,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409514691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:53:58,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:53:58,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:53:58,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033354993] [2022-11-23 02:53:58,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:53:58,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:53:58,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:53:58,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:53:58,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:53:58,233 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 319 [2022-11-23 02:53:58,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 44 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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 02:53:58,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:53:58,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 319 [2022-11-23 02:53:58,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:53:58,398 INFO L130 PetriNetUnfolder]: 97/228 cut-off events. [2022-11-23 02:53:58,399 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:53:58,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 228 events. 97/228 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 915 event pairs, 0 based on Foata normal form. 6/185 useless extension candidates. Maximal degree in co-relation 420. Up to 203 conditions per place. [2022-11-23 02:53:58,406 INFO L137 encePairwiseOnDemand]: 304/319 looper letters, 33 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2022-11-23 02:53:58,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 154 flow [2022-11-23 02:53:58,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:53:58,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:53:58,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-11-23 02:53:58,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5109717868338558 [2022-11-23 02:53:58,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-11-23 02:53:58,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-11-23 02:53:58,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:53:58,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-11-23 02:53:58,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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 02:53:58,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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 02:53:58,462 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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 02:53:58,464 INFO L175 Difference]: Start difference. First operand has 36 places, 44 transitions, 96 flow. Second operand 3 states and 489 transitions. [2022-11-23 02:53:58,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 154 flow [2022-11-23 02:53:58,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:53:58,472 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 80 flow [2022-11-23 02:53:58,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2022-11-23 02:53:58,480 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2022-11-23 02:53:58,480 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 80 flow [2022-11-23 02:53:58,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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 02:53:58,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:53:58,481 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-23 02:53:58,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:53:58,482 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-23 02:53:58,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:53:58,484 INFO L85 PathProgramCache]: Analyzing trace with hash 636770316, now seen corresponding path program 1 times [2022-11-23 02:53:58,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:53:58,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32668329] [2022-11-23 02:53:58,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:53:58,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:53:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:53:58,558 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:53:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:53:58,618 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:53:58,619 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:53:58,621 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-23 02:53:58,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-23 02:53:58,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-23 02:53:58,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-23 02:53:58,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-23 02:53:58,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-23 02:53:58,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-11-23 02:53:58,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-23 02:53:58,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-23 02:53:58,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-23 02:53:58,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-23 02:53:58,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:53:58,627 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 02:53:58,630 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 02:53:58,630 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-23 02:53:58,650 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 02:53:58,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 188 transitions, 394 flow [2022-11-23 02:53:58,706 INFO L130 PetriNetUnfolder]: 43/401 cut-off events. [2022-11-23 02:53:58,707 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 02:53:58,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 401 events. 43/401 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1517 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 255. Up to 9 conditions per place. [2022-11-23 02:53:58,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 188 transitions, 394 flow [2022-11-23 02:53:58,712 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 188 transitions, 394 flow [2022-11-23 02:53:58,713 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:53:58,713 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 188 transitions, 394 flow [2022-11-23 02:53:58,713 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 188 transitions, 394 flow [2022-11-23 02:53:58,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 188 transitions, 394 flow [2022-11-23 02:53:58,762 INFO L130 PetriNetUnfolder]: 43/401 cut-off events. [2022-11-23 02:53:58,762 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 02:53:58,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 401 events. 43/401 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1517 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 255. Up to 9 conditions per place. [2022-11-23 02:53:58,770 INFO L119 LiptonReduction]: Number of co-enabled transitions 9912 [2022-11-23 02:54:04,128 INFO L134 LiptonReduction]: Checked pairs total: 14641 [2022-11-23 02:54:04,128 INFO L136 LiptonReduction]: Total number of compositions: 175 [2022-11-23 02:54:04,131 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:54:04,132 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;@57c2be8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:54:04,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-23 02:54:04,137 INFO L130 PetriNetUnfolder]: 3/14 cut-off events. [2022-11-23 02:54:04,137 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:54:04,137 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:54:04,138 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 02:54:04,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-23 02:54:04,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:04,139 INFO L85 PathProgramCache]: Analyzing trace with hash 30434021, now seen corresponding path program 1 times [2022-11-23 02:54:04,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:04,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75124270] [2022-11-23 02:54:04,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:04,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:04,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:54:04,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75124270] [2022-11-23 02:54:04,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75124270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:54:04,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:54:04,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:54:04,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708924495] [2022-11-23 02:54:04,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:54:04,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:54:04,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:54:04,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:54:04,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:54:04,203 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 363 [2022-11-23 02:54:04,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 57 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 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 02:54:04,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:54:04,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 363 [2022-11-23 02:54:04,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:54:04,620 INFO L130 PetriNetUnfolder]: 1521/2545 cut-off events. [2022-11-23 02:54:04,621 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-11-23 02:54:04,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5090 conditions, 2545 events. 1521/2545 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13546 event pairs, 660 based on Foata normal form. 42/2098 useless extension candidates. Maximal degree in co-relation 779. Up to 2488 conditions per place. [2022-11-23 02:54:04,639 INFO L137 encePairwiseOnDemand]: 347/363 looper letters, 45 selfloop transitions, 2 changer transitions 1/53 dead transitions. [2022-11-23 02:54:04,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 220 flow [2022-11-23 02:54:04,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:54:04,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:54:04,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 553 transitions. [2022-11-23 02:54:04,643 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5078053259871441 [2022-11-23 02:54:04,643 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 553 transitions. [2022-11-23 02:54:04,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 553 transitions. [2022-11-23 02:54:04,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:54:04,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 553 transitions. [2022-11-23 02:54:04,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 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 02:54:04,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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 02:54:04,650 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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 02:54:04,650 INFO L175 Difference]: Start difference. First operand has 47 places, 57 transitions, 132 flow. Second operand 3 states and 553 transitions. [2022-11-23 02:54:04,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 220 flow [2022-11-23 02:54:04,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:54:04,655 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 124 flow [2022-11-23 02:54:04,655 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2022-11-23 02:54:04,656 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2022-11-23 02:54:04,656 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 124 flow [2022-11-23 02:54:04,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 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 02:54:04,657 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:54:04,657 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:54:04,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:54:04,658 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-23 02:54:04,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:04,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1032683342, now seen corresponding path program 1 times [2022-11-23 02:54:04,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:04,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286928251] [2022-11-23 02:54:04,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:04,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:04,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:04,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:54:04,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286928251] [2022-11-23 02:54:04,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286928251] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:54:04,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728590052] [2022-11-23 02:54:04,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:04,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:54:04,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:54:04,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:54:04,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:54:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:04,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:54:04,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:54:04,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:04,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:54:05,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:05,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728590052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:54:05,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:54:05,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-23 02:54:05,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500271665] [2022-11-23 02:54:05,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:54:05,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:54:05,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:54:05,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:54:05,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:54:05,072 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 363 [2022-11-23 02:54:05,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 164.14285714285714) internal successors, (1149), 7 states have internal predecessors, (1149), 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 02:54:05,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:54:05,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 363 [2022-11-23 02:54:05,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:54:05,283 INFO L130 PetriNetUnfolder]: 220/427 cut-off events. [2022-11-23 02:54:05,289 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-11-23 02:54:05,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 994 conditions, 427 events. 220/427 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1791 event pairs, 0 based on Foata normal form. 42/433 useless extension candidates. Maximal degree in co-relation 166. Up to 192 conditions per place. [2022-11-23 02:54:05,292 INFO L137 encePairwiseOnDemand]: 358/363 looper letters, 40 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2022-11-23 02:54:05,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 46 transitions, 202 flow [2022-11-23 02:54:05,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:54:05,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:54:05,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1019 transitions. [2022-11-23 02:54:05,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46786042240587694 [2022-11-23 02:54:05,296 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1019 transitions. [2022-11-23 02:54:05,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1019 transitions. [2022-11-23 02:54:05,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:54:05,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1019 transitions. [2022-11-23 02:54:05,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 169.83333333333334) internal successors, (1019), 6 states have internal predecessors, (1019), 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 02:54:05,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 363.0) internal successors, (2541), 7 states have internal predecessors, (2541), 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 02:54:05,307 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 363.0) internal successors, (2541), 7 states have internal predecessors, (2541), 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 02:54:05,307 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 124 flow. Second operand 6 states and 1019 transitions. [2022-11-23 02:54:05,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 46 transitions, 202 flow [2022-11-23 02:54:05,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 198 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-23 02:54:05,313 INFO L231 Difference]: Finished difference. Result has 30 places, 19 transitions, 64 flow [2022-11-23 02:54:05,313 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=64, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2022-11-23 02:54:05,316 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -17 predicate places. [2022-11-23 02:54:05,316 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 64 flow [2022-11-23 02:54:05,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 164.14285714285714) internal successors, (1149), 7 states have internal predecessors, (1149), 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 02:54:05,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:54:05,317 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 02:54:05,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:54:05,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:54:05,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-23 02:54:05,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:05,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1947720809, now seen corresponding path program 1 times [2022-11-23 02:54:05,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:05,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983323998] [2022-11-23 02:54:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:05,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:05,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:05,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:54:05,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983323998] [2022-11-23 02:54:05,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983323998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:54:05,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:54:05,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:54:05,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095676176] [2022-11-23 02:54:05,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:54:05,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:54:05,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:54:05,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:54:05,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:54:05,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 363 [2022-11-23 02:54:05,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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 02:54:05,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:54:05,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 363 [2022-11-23 02:54:05,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:54:05,724 INFO L130 PetriNetUnfolder]: 160/297 cut-off events. [2022-11-23 02:54:05,724 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2022-11-23 02:54:05,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 297 events. 160/297 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1095 event pairs, 160 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 273. Up to 288 conditions per place. [2022-11-23 02:54:05,726 INFO L137 encePairwiseOnDemand]: 361/363 looper letters, 15 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2022-11-23 02:54:05,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 18 transitions, 90 flow [2022-11-23 02:54:05,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:54:05,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:54:05,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 505 transitions. [2022-11-23 02:54:05,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4637281910009183 [2022-11-23 02:54:05,729 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 505 transitions. [2022-11-23 02:54:05,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 505 transitions. [2022-11-23 02:54:05,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:54:05,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 505 transitions. [2022-11-23 02:54:05,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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 02:54:05,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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 02:54:05,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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 02:54:05,738 INFO L175 Difference]: Start difference. First operand has 30 places, 19 transitions, 64 flow. Second operand 3 states and 505 transitions. [2022-11-23 02:54:05,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 18 transitions, 90 flow [2022-11-23 02:54:05,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 18 transitions, 83 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-23 02:54:05,740 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 53 flow [2022-11-23 02:54:05,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2022-11-23 02:54:05,742 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -20 predicate places. [2022-11-23 02:54:05,743 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 53 flow [2022-11-23 02:54:05,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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 02:54:05,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:54:05,744 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-23 02:54:05,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:54:05,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-23 02:54:05,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:05,745 INFO L85 PathProgramCache]: Analyzing trace with hash -845979401, now seen corresponding path program 1 times [2022-11-23 02:54:05,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:05,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934816328] [2022-11-23 02:54:05,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:05,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:54:05,786 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:54:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:54:05,821 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:54:05,822 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:54:05,822 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-23 02:54:05,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-23 02:54:05,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-23 02:54:05,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-23 02:54:05,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-23 02:54:05,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-23 02:54:05,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-11-23 02:54:05,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-23 02:54:05,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-23 02:54:05,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-23 02:54:05,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-23 02:54:05,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:54:05,832 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-23 02:54:05,833 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 02:54:05,833 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-23 02:54:05,874 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 02:54:05,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 211 transitions, 452 flow [2022-11-23 02:54:05,975 INFO L130 PetriNetUnfolder]: 65/590 cut-off events. [2022-11-23 02:54:05,976 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-23 02:54:05,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 590 events. 65/590 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2490 event pairs, 1 based on Foata normal form. 0/477 useless extension candidates. Maximal degree in co-relation 409. Up to 16 conditions per place. [2022-11-23 02:54:05,979 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 211 transitions, 452 flow [2022-11-23 02:54:05,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 211 transitions, 452 flow [2022-11-23 02:54:05,984 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:54:05,985 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 211 transitions, 452 flow [2022-11-23 02:54:05,985 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 211 transitions, 452 flow [2022-11-23 02:54:05,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 211 transitions, 452 flow [2022-11-23 02:54:06,073 INFO L130 PetriNetUnfolder]: 65/590 cut-off events. [2022-11-23 02:54:06,077 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-23 02:54:06,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 590 events. 65/590 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2490 event pairs, 1 based on Foata normal form. 0/477 useless extension candidates. Maximal degree in co-relation 409. Up to 16 conditions per place. [2022-11-23 02:54:06,098 INFO L119 LiptonReduction]: Number of co-enabled transitions 16380 [2022-11-23 02:54:12,150 INFO L134 LiptonReduction]: Checked pairs total: 22795 [2022-11-23 02:54:12,150 INFO L136 LiptonReduction]: Total number of compositions: 192 [2022-11-23 02:54:12,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:54:12,153 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;@57c2be8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:54:12,153 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-23 02:54:12,156 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2022-11-23 02:54:12,156 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:54:12,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:54:12,156 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 02:54:12,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-23 02:54:12,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:12,157 INFO L85 PathProgramCache]: Analyzing trace with hash 43519135, now seen corresponding path program 1 times [2022-11-23 02:54:12,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:12,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156688095] [2022-11-23 02:54:12,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:12,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:12,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:12,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:54:12,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156688095] [2022-11-23 02:54:12,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156688095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:54:12,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:54:12,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:54:12,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243120987] [2022-11-23 02:54:12,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:54:12,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:54:12,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:54:12,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:54:12,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:54:12,198 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 403 [2022-11-23 02:54:12,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 68 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 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 02:54:12,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:54:12,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 403 [2022-11-23 02:54:12,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:54:14,105 INFO L130 PetriNetUnfolder]: 10209/15617 cut-off events. [2022-11-23 02:54:14,106 INFO L131 PetriNetUnfolder]: For 440/440 co-relation queries the response was YES. [2022-11-23 02:54:14,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30717 conditions, 15617 events. 10209/15617 cut-off events. For 440/440 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 100609 event pairs, 6343 based on Foata normal form. 1780/15060 useless extension candidates. Maximal degree in co-relation 4496. Up to 14772 conditions per place. [2022-11-23 02:54:14,213 INFO L137 encePairwiseOnDemand]: 383/403 looper letters, 49 selfloop transitions, 2 changer transitions 1/59 dead transitions. [2022-11-23 02:54:14,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 252 flow [2022-11-23 02:54:14,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:54:14,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:54:14,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2022-11-23 02:54:14,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5070306038047974 [2022-11-23 02:54:14,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2022-11-23 02:54:14,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2022-11-23 02:54:14,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:54:14,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2022-11-23 02:54:14,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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 02:54:14,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 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 02:54:14,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 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 02:54:14,227 INFO L175 Difference]: Start difference. First operand has 55 places, 68 transitions, 166 flow. Second operand 3 states and 613 transitions. [2022-11-23 02:54:14,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 252 flow [2022-11-23 02:54:14,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:54:14,233 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 150 flow [2022-11-23 02:54:14,233 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2022-11-23 02:54:14,236 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2022-11-23 02:54:14,236 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 150 flow [2022-11-23 02:54:14,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 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 02:54:14,237 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:54:14,238 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:54:14,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:54:14,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-23 02:54:14,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:14,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1015919690, now seen corresponding path program 1 times [2022-11-23 02:54:14,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:14,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102817046] [2022-11-23 02:54:14,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:14,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:14,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:14,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:54:14,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102817046] [2022-11-23 02:54:14,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102817046] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:54:14,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308408662] [2022-11-23 02:54:14,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:14,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:54:14,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:54:14,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:54:14,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:54:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:14,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:54:14,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:54:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:14,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:54:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:14,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308408662] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:54:14,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:54:14,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-23 02:54:14,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120955328] [2022-11-23 02:54:14,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:54:14,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:54:14,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:54:14,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:54:14,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:54:14,522 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 403 [2022-11-23 02:54:14,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 181.14285714285714) internal successors, (1268), 7 states have internal predecessors, (1268), 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 02:54:14,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:54:14,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 403 [2022-11-23 02:54:14,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:54:14,862 INFO L130 PetriNetUnfolder]: 1519/2473 cut-off events. [2022-11-23 02:54:14,862 INFO L131 PetriNetUnfolder]: For 730/730 co-relation queries the response was YES. [2022-11-23 02:54:14,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5694 conditions, 2473 events. 1519/2473 cut-off events. For 730/730 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13185 event pairs, 0 based on Foata normal form. 185/2478 useless extension candidates. Maximal degree in co-relation 1189. Up to 1030 conditions per place. [2022-11-23 02:54:14,876 INFO L137 encePairwiseOnDemand]: 398/403 looper letters, 59 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2022-11-23 02:54:14,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 69 transitions, 303 flow [2022-11-23 02:54:14,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:54:14,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 02:54:14,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1323 transitions. [2022-11-23 02:54:14,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46898263027295284 [2022-11-23 02:54:14,881 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1323 transitions. [2022-11-23 02:54:14,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1323 transitions. [2022-11-23 02:54:14,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:54:14,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1323 transitions. [2022-11-23 02:54:14,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 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 02:54:14,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 403.0) internal successors, (3224), 8 states have internal predecessors, (3224), 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 02:54:14,894 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 403.0) internal successors, (3224), 8 states have internal predecessors, (3224), 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 02:54:14,894 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 150 flow. Second operand 7 states and 1323 transitions. [2022-11-23 02:54:14,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 69 transitions, 303 flow [2022-11-23 02:54:14,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 69 transitions, 295 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-23 02:54:14,897 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 93 flow [2022-11-23 02:54:14,897 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=93, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2022-11-23 02:54:14,899 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -16 predicate places. [2022-11-23 02:54:14,899 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 93 flow [2022-11-23 02:54:14,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 181.14285714285714) internal successors, (1268), 7 states have internal predecessors, (1268), 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 02:54:14,900 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:54:14,900 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 02:54:14,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:54:15,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:54:15,107 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-23 02:54:15,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:15,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1429299929, now seen corresponding path program 1 times [2022-11-23 02:54:15,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:15,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949504340] [2022-11-23 02:54:15,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:15,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:15,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:15,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:54:15,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949504340] [2022-11-23 02:54:15,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949504340] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:54:15,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896775663] [2022-11-23 02:54:15,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:15,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:54:15,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:54:15,180 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:54:15,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:54:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:15,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 02:54:15,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:54:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:15,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:54:15,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896775663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:54:15,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:54:15,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-23 02:54:15,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651579061] [2022-11-23 02:54:15,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:54:15,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:54:15,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:54:15,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:54:15,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:54:15,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 403 [2022-11-23 02:54:15,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 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 02:54:15,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:54:15,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 403 [2022-11-23 02:54:15,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:54:15,615 INFO L130 PetriNetUnfolder]: 1105/1799 cut-off events. [2022-11-23 02:54:15,615 INFO L131 PetriNetUnfolder]: For 640/640 co-relation queries the response was YES. [2022-11-23 02:54:15,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3967 conditions, 1799 events. 1105/1799 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9028 event pairs, 665 based on Foata normal form. 0/1799 useless extension candidates. Maximal degree in co-relation 818. Up to 1655 conditions per place. [2022-11-23 02:54:15,626 INFO L137 encePairwiseOnDemand]: 400/403 looper letters, 24 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2022-11-23 02:54:15,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 143 flow [2022-11-23 02:54:15,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:54:15,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:54:15,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 746 transitions. [2022-11-23 02:54:15,630 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4627791563275434 [2022-11-23 02:54:15,630 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 746 transitions. [2022-11-23 02:54:15,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 746 transitions. [2022-11-23 02:54:15,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:54:15,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 746 transitions. [2022-11-23 02:54:15,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 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 02:54:15,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 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 02:54:15,638 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 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 02:54:15,639 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 93 flow. Second operand 4 states and 746 transitions. [2022-11-23 02:54:15,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 143 flow [2022-11-23 02:54:15,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 30 transitions, 134 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-23 02:54:15,642 INFO L231 Difference]: Finished difference. Result has 37 places, 25 transitions, 76 flow [2022-11-23 02:54:15,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=37, PETRI_TRANSITIONS=25} [2022-11-23 02:54:15,644 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -18 predicate places. [2022-11-23 02:54:15,644 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 76 flow [2022-11-23 02:54:15,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 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 02:54:15,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:54:15,645 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-23 02:54:15,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:54:15,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:54:15,852 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-23 02:54:15,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:15,853 INFO L85 PathProgramCache]: Analyzing trace with hash -82065418, now seen corresponding path program 1 times [2022-11-23 02:54:15,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:15,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105584842] [2022-11-23 02:54:15,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:15,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:54:15,878 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:54:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:54:15,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:54:15,915 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:54:15,915 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-23 02:54:15,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-23 02:54:15,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-23 02:54:15,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-23 02:54:15,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-23 02:54:15,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-23 02:54:15,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-11-23 02:54:15,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-23 02:54:15,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-23 02:54:15,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-23 02:54:15,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-23 02:54:15,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 02:54:15,919 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-23 02:54:15,919 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 02:54:15,920 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-23 02:54:15,960 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-23 02:54:15,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 234 transitions, 512 flow [2022-11-23 02:54:16,136 INFO L130 PetriNetUnfolder]: 99/863 cut-off events. [2022-11-23 02:54:16,136 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-23 02:54:16,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 863 events. 99/863 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4041 event pairs, 6 based on Foata normal form. 0/696 useless extension candidates. Maximal degree in co-relation 610. Up to 32 conditions per place. [2022-11-23 02:54:16,143 INFO L82 GeneralOperation]: Start removeDead. Operand has 216 places, 234 transitions, 512 flow [2022-11-23 02:54:16,149 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 234 transitions, 512 flow [2022-11-23 02:54:16,149 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:54:16,149 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 216 places, 234 transitions, 512 flow [2022-11-23 02:54:16,150 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 216 places, 234 transitions, 512 flow [2022-11-23 02:54:16,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 234 transitions, 512 flow [2022-11-23 02:54:16,294 INFO L130 PetriNetUnfolder]: 99/863 cut-off events. [2022-11-23 02:54:16,295 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-23 02:54:16,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 863 events. 99/863 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4041 event pairs, 6 based on Foata normal form. 0/696 useless extension candidates. Maximal degree in co-relation 610. Up to 32 conditions per place. [2022-11-23 02:54:16,324 INFO L119 LiptonReduction]: Number of co-enabled transitions 23856 [2022-11-23 02:54:22,269 INFO L134 LiptonReduction]: Checked pairs total: 35730 [2022-11-23 02:54:22,269 INFO L136 LiptonReduction]: Total number of compositions: 217 [2022-11-23 02:54:22,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:54:22,273 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;@57c2be8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:54:22,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-23 02:54:22,281 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2022-11-23 02:54:22,281 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:54:22,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:54:22,281 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 02:54:22,282 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-23 02:54:22,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:22,282 INFO L85 PathProgramCache]: Analyzing trace with hash 58111912, now seen corresponding path program 1 times [2022-11-23 02:54:22,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:22,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177855196] [2022-11-23 02:54:22,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:22,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:22,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:22,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:54:22,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177855196] [2022-11-23 02:54:22,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177855196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:54:22,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:54:22,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:54:22,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475606051] [2022-11-23 02:54:22,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:54:22,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:54:22,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:54:22,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:54:22,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:54:22,326 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 451 [2022-11-23 02:54:22,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 76 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 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 02:54:22,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:54:22,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 451 [2022-11-23 02:54:22,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:54:33,327 INFO L130 PetriNetUnfolder]: 87481/121975 cut-off events. [2022-11-23 02:54:33,327 INFO L131 PetriNetUnfolder]: For 4662/4662 co-relation queries the response was YES. [2022-11-23 02:54:33,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241132 conditions, 121975 events. 87481/121975 cut-off events. For 4662/4662 co-relation queries the response was YES. Maximal size of possible extension queue 3341. Compared 843320 event pairs, 63077 based on Foata normal form. 11218/118518 useless extension candidates. Maximal degree in co-relation 37100. Up to 116536 conditions per place. [2022-11-23 02:54:34,006 INFO L137 encePairwiseOnDemand]: 430/451 looper letters, 56 selfloop transitions, 2 changer transitions 1/66 dead transitions. [2022-11-23 02:54:34,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 66 transitions, 294 flow [2022-11-23 02:54:34,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:54:34,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:54:34,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions. [2022-11-23 02:54:34,009 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49667405764966743 [2022-11-23 02:54:34,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 672 transitions. [2022-11-23 02:54:34,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 672 transitions. [2022-11-23 02:54:34,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:54:34,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 672 transitions. [2022-11-23 02:54:34,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 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 02:54:34,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 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 02:54:34,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 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 02:54:34,016 INFO L175 Difference]: Start difference. First operand has 63 places, 76 transitions, 196 flow. Second operand 3 states and 672 transitions. [2022-11-23 02:54:34,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 66 transitions, 294 flow [2022-11-23 02:54:34,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:54:34,021 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 178 flow [2022-11-23 02:54:34,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=451, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2022-11-23 02:54:34,023 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2022-11-23 02:54:34,024 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 178 flow [2022-11-23 02:54:34,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 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 02:54:34,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:54:34,024 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:54:34,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 02:54:34,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-23 02:54:34,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:34,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1387460220, now seen corresponding path program 1 times [2022-11-23 02:54:34,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:34,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556396957] [2022-11-23 02:54:34,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:34,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:34,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:54:34,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556396957] [2022-11-23 02:54:34,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556396957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:54:34,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081364003] [2022-11-23 02:54:34,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:34,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:54:34,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:54:34,100 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:54:34,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:54:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:34,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:54:34,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:54:34,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:34,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:54:34,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:34,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081364003] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:54:34,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:54:34,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-23 02:54:34,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700085506] [2022-11-23 02:54:34,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:54:34,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:54:34,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:54:34,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:54:34,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:54:34,275 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 451 [2022-11-23 02:54:34,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 198.14285714285714) internal successors, (1387), 7 states have internal predecessors, (1387), 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 02:54:34,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:54:34,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 451 [2022-11-23 02:54:34,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:54:42,570 INFO L130 PetriNetUnfolder]: 71573/98171 cut-off events. [2022-11-23 02:54:42,570 INFO L131 PetriNetUnfolder]: For 4462/4462 co-relation queries the response was YES. [2022-11-23 02:54:42,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198909 conditions, 98171 events. 71573/98171 cut-off events. For 4462/4462 co-relation queries the response was YES. Maximal size of possible extension queue 2674. Compared 626689 event pairs, 948 based on Foata normal form. 215/89247 useless extension candidates. Maximal degree in co-relation 40898. Up to 81289 conditions per place. [2022-11-23 02:54:43,062 INFO L137 encePairwiseOnDemand]: 445/451 looper letters, 114 selfloop transitions, 9 changer transitions 0/130 dead transitions. [2022-11-23 02:54:43,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 130 transitions, 570 flow [2022-11-23 02:54:43,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:54:43,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 02:54:43,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1501 transitions. [2022-11-23 02:54:43,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47545137789040226 [2022-11-23 02:54:43,068 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1501 transitions. [2022-11-23 02:54:43,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1501 transitions. [2022-11-23 02:54:43,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:54:43,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1501 transitions. [2022-11-23 02:54:43,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 214.42857142857142) internal successors, (1501), 7 states have internal predecessors, (1501), 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 02:54:43,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 451.0) internal successors, (3608), 8 states have internal predecessors, (3608), 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 02:54:43,080 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 451.0) internal successors, (3608), 8 states have internal predecessors, (3608), 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 02:54:43,080 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 178 flow. Second operand 7 states and 1501 transitions. [2022-11-23 02:54:43,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 130 transitions, 570 flow [2022-11-23 02:54:43,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 130 transitions, 568 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:54:43,087 INFO L231 Difference]: Finished difference. Result has 73 places, 64 transitions, 229 flow [2022-11-23 02:54:43,087 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=451, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=73, PETRI_TRANSITIONS=64} [2022-11-23 02:54:43,088 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2022-11-23 02:54:43,089 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 64 transitions, 229 flow [2022-11-23 02:54:43,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 198.14285714285714) internal successors, (1387), 7 states have internal predecessors, (1387), 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 02:54:43,090 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:54:43,090 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 02:54:43,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:54:43,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_959903af-9155-4062-b229-c4829685d466/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 02:54:43,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-23 02:54:43,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:43,297 INFO L85 PathProgramCache]: Analyzing trace with hash 61863988, now seen corresponding path program 1 times [2022-11-23 02:54:43,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:43,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128366704] [2022-11-23 02:54:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:43,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:43,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:43,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:54:43,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128366704] [2022-11-23 02:54:43,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128366704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:54:43,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:54:43,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:54:43,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541136289] [2022-11-23 02:54:43,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:54:43,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:54:43,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:54:43,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:54:43,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:54:43,382 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 451 [2022-11-23 02:54:43,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 64 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 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 02:54:43,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:54:43,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 451 [2022-11-23 02:54:43,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:54:52,358 INFO L130 PetriNetUnfolder]: 68140/94280 cut-off events. [2022-11-23 02:54:52,358 INFO L131 PetriNetUnfolder]: For 26699/26699 co-relation queries the response was YES. [2022-11-23 02:54:52,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197746 conditions, 94280 events. 68140/94280 cut-off events. For 26699/26699 co-relation queries the response was YES. Maximal size of possible extension queue 2658. Compared 612115 event pairs, 66340 based on Foata normal form. 1110/86820 useless extension candidates. Maximal degree in co-relation 30937. Up to 90207 conditions per place. [2022-11-23 02:54:52,853 INFO L137 encePairwiseOnDemand]: 449/451 looper letters, 53 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2022-11-23 02:54:52,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 61 transitions, 316 flow [2022-11-23 02:54:52,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:54:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:54:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 642 transitions. [2022-11-23 02:54:52,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4745011086474501 [2022-11-23 02:54:52,866 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 642 transitions. [2022-11-23 02:54:52,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 642 transitions. [2022-11-23 02:54:52,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:54:52,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 642 transitions. [2022-11-23 02:54:52,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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 02:54:52,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 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 02:54:52,877 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 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 02:54:52,877 INFO L175 Difference]: Start difference. First operand has 73 places, 64 transitions, 229 flow. Second operand 3 states and 642 transitions. [2022-11-23 02:54:52,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 61 transitions, 316 flow [2022-11-23 02:54:52,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 61 transitions, 308 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-23 02:54:52,896 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 202 flow [2022-11-23 02:54:52,897 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=451, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2022-11-23 02:54:52,898 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2022-11-23 02:54:52,899 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 202 flow [2022-11-23 02:54:52,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 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 02:54:52,900 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:54:52,900 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-23 02:54:52,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 02:54:52,900 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-23 02:54:52,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:52,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1271258415, now seen corresponding path program 1 times [2022-11-23 02:54:52,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:52,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035056044] [2022-11-23 02:54:52,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:52,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:54:52,924 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:54:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:54:52,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:54:52,962 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:54:52,962 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-23 02:54:52,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-23 02:54:52,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-23 02:54:52,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-23 02:54:52,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-23 02:54:52,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-23 02:54:52,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-11-23 02:54:52,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-23 02:54:52,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-23 02:54:52,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-23 02:54:52,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-23 02:54:52,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 02:54:52,965 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-23 02:54:52,966 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 02:54:52,967 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-23 02:54:53,003 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-23 02:54:53,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 257 transitions, 574 flow [2022-11-23 02:54:53,195 INFO L130 PetriNetUnfolder]: 161/1308 cut-off events. [2022-11-23 02:54:53,195 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-11-23 02:54:53,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1419 conditions, 1308 events. 161/1308 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6834 event pairs, 23 based on Foata normal form. 0/1055 useless extension candidates. Maximal degree in co-relation 908. Up to 80 conditions per place. [2022-11-23 02:54:53,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 237 places, 257 transitions, 574 flow [2022-11-23 02:54:53,208 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 257 transitions, 574 flow [2022-11-23 02:54:53,208 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:54:53,209 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 257 transitions, 574 flow [2022-11-23 02:54:53,209 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 257 transitions, 574 flow [2022-11-23 02:54:53,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 257 transitions, 574 flow [2022-11-23 02:54:53,350 INFO L130 PetriNetUnfolder]: 161/1308 cut-off events. [2022-11-23 02:54:53,350 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-11-23 02:54:53,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1419 conditions, 1308 events. 161/1308 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6834 event pairs, 23 based on Foata normal form. 0/1055 useless extension candidates. Maximal degree in co-relation 908. Up to 80 conditions per place. [2022-11-23 02:54:53,396 INFO L119 LiptonReduction]: Number of co-enabled transitions 32340 [2022-11-23 02:54:59,913 INFO L134 LiptonReduction]: Checked pairs total: 53807 [2022-11-23 02:54:59,913 INFO L136 LiptonReduction]: Total number of compositions: 241 [2022-11-23 02:54:59,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:54:59,916 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;@57c2be8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:54:59,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-23 02:54:59,919 INFO L130 PetriNetUnfolder]: 3/14 cut-off events. [2022-11-23 02:54:59,920 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:54:59,920 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:54:59,920 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 02:54:59,920 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-23 02:54:59,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:54:59,921 INFO L85 PathProgramCache]: Analyzing trace with hash 74145338, now seen corresponding path program 1 times [2022-11-23 02:54:59,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:54:59,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504608178] [2022-11-23 02:54:59,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:54:59,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:54:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:54:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:54:59,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:54:59,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504608178] [2022-11-23 02:54:59,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504608178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:54:59,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:54:59,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:54:59,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68092749] [2022-11-23 02:54:59,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:54:59,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:54:59,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:54:59,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:54:59,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:54:59,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 498 [2022-11-23 02:54:59,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 84 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 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 02:54:59,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:54:59,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 498 [2022-11-23 02:54:59,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand