./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:46:19,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:46:20,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:46:20,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:46:20,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:46:20,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:46:20,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:46:20,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:46:20,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:46:20,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:46:20,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:46:20,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:46:20,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:46:20,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:46:20,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:46:20,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:46:20,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:46:20,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:46:20,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:46:20,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:46:20,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:46:20,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:46:20,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:46:20,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:46:20,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:46:20,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:46:20,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:46:20,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:46:20,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:46:20,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:46:20,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:46:20,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:46:20,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:46:20,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:46:20,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:46:20,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:46:20,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:46:20,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:46:20,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:46:20,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:46:20,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:46:20,069 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:46:20,096 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:46:20,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:46:20,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:46:20,097 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:46:20,098 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:46:20,098 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:46:20,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:46:20,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:46:20,100 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:46:20,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:46:20,100 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:46:20,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:46:20,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:46:20,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:46:20,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:46:20,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:46:20,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:46:20,102 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:46:20,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:46:20,102 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:46:20,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:46:20,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:46:20,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:46:20,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:46:20,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:46:20,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:46:20,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:46:20,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:46:20,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:46:20,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:46:20,105 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:46:20,105 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:46:20,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:46:20,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 [2022-11-20 12:46:20,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:46:20,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:46:20,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:46:20,545 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:46:20,545 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:46:20,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/stack-1.i [2022-11-20 12:46:24,119 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:46:24,467 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:46:24,468 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/sv-benchmarks/c/pthread/stack-1.i [2022-11-20 12:46:24,485 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/data/ea0a6eccd/0d85898c9b0840928f930e1f22ee9f20/FLAGf8fbb5628 [2022-11-20 12:46:24,502 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/data/ea0a6eccd/0d85898c9b0840928f930e1f22ee9f20 [2022-11-20 12:46:24,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:46:24,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:46:24,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:46:24,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:46:24,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:46:24,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:46:24" (1/1) ... [2022-11-20 12:46:24,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19feb77c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:24, skipping insertion in model container [2022-11-20 12:46:24,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:46:24" (1/1) ... [2022-11-20 12:46:24,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:46:24,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:46:25,222 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_cf866cdc-8aa2-489e-be63-95ab434cf317/sv-benchmarks/c/pthread/stack-1.i[41520,41533] [2022-11-20 12:46:25,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:46:25,300 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:46:25,380 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_cf866cdc-8aa2-489e-be63-95ab434cf317/sv-benchmarks/c/pthread/stack-1.i[41520,41533] [2022-11-20 12:46:25,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:46:25,492 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:46:25,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25 WrapperNode [2022-11-20 12:46:25,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:46:25,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:46:25,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:46:25,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:46:25,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,603 INFO L138 Inliner]: procedures = 277, calls = 43, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 152 [2022-11-20 12:46:25,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:46:25,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:46:25,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:46:25,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:46:25,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,649 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:46:25,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:46:25,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:46:25,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:46:25,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (1/1) ... [2022-11-20 12:46:25,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:46:25,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:46:25,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:46:25,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:46:25,778 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 12:46:25,778 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 12:46:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 12:46:25,779 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 12:46:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:46:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:46:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:46:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:46:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 12:46:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:46:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:46:25,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:46:25,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:46:25,782 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:46:25,963 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:46:25,966 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:46:26,460 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:46:26,476 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:46:26,476 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 12:46:26,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:46:26 BoogieIcfgContainer [2022-11-20 12:46:26,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:46:26,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:46:26,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:46:26,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:46:26,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:46:24" (1/3) ... [2022-11-20 12:46:26,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ead4c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:46:26, skipping insertion in model container [2022-11-20 12:46:26,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:46:25" (2/3) ... [2022-11-20 12:46:26,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ead4c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:46:26, skipping insertion in model container [2022-11-20 12:46:26,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:46:26" (3/3) ... [2022-11-20 12:46:26,505 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2022-11-20 12:46:26,520 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:46:26,536 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:46:26,536 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 12:46:26,537 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:46:26,670 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:46:26,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 174 transitions, 364 flow [2022-11-20 12:46:26,827 INFO L130 PetriNetUnfolder]: 10/172 cut-off events. [2022-11-20 12:46:26,828 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 12:46:26,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 10/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 416 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 126. Up to 3 conditions per place. [2022-11-20 12:46:26,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 174 transitions, 364 flow [2022-11-20 12:46:26,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 162 transitions, 333 flow [2022-11-20 12:46:26,862 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:46:26,870 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;@428fb43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:46:26,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-20 12:46:26,922 INFO L130 PetriNetUnfolder]: 5/131 cut-off events. [2022-11-20 12:46:26,923 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 12:46:26,923 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:46:26,924 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:46:26,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:46:26,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:26,931 INFO L85 PathProgramCache]: Analyzing trace with hash -960596963, now seen corresponding path program 1 times [2022-11-20 12:46:26,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:26,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604269832] [2022-11-20 12:46:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:26,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:27,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:46:27,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604269832] [2022-11-20 12:46:27,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604269832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:46:27,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:46:27,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:46:27,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33311949] [2022-11-20 12:46:27,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:46:27,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:46:27,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:46:27,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:46:27,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:46:27,525 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 174 [2022-11-20 12:46:27,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 162 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:27,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:46:27,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 174 [2022-11-20 12:46:27,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:46:27,871 INFO L130 PetriNetUnfolder]: 88/701 cut-off events. [2022-11-20 12:46:27,872 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-11-20 12:46:27,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 701 events. 88/701 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3108 event pairs, 32 based on Foata normal form. 69/704 useless extension candidates. Maximal degree in co-relation 747. Up to 111 conditions per place. [2022-11-20 12:46:27,882 INFO L137 encePairwiseOnDemand]: 164/174 looper letters, 20 selfloop transitions, 3 changer transitions 0/160 dead transitions. [2022-11-20 12:46:27,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 160 transitions, 381 flow [2022-11-20 12:46:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:46:27,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:46:27,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2022-11-20 12:46:27,911 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9291187739463601 [2022-11-20 12:46:27,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2022-11-20 12:46:27,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2022-11-20 12:46:27,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:46:27,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2022-11-20 12:46:27,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:27,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:27,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:27,947 INFO L175 Difference]: Start difference. First operand has 159 places, 162 transitions, 333 flow. Second operand 3 states and 485 transitions. [2022-11-20 12:46:27,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 160 transitions, 381 flow [2022-11-20 12:46:27,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 160 transitions, 373 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:46:27,965 INFO L231 Difference]: Finished difference. Result has 155 places, 154 transitions, 327 flow [2022-11-20 12:46:27,967 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=327, PETRI_PLACES=155, PETRI_TRANSITIONS=154} [2022-11-20 12:46:27,975 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, -4 predicate places. [2022-11-20 12:46:27,976 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 154 transitions, 327 flow [2022-11-20 12:46:27,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:27,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:46:27,978 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:46:27,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:46:27,979 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:46:27,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:27,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1002901647, now seen corresponding path program 1 times [2022-11-20 12:46:27,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:27,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865952763] [2022-11-20 12:46:27,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:27,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:28,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:46:28,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865952763] [2022-11-20 12:46:28,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865952763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:46:28,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:46:28,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:46:28,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036589913] [2022-11-20 12:46:28,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:46:28,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:46:28,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:46:28,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:46:28,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:46:28,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 174 [2022-11-20 12:46:28,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 154 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:28,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:46:28,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 174 [2022-11-20 12:46:28,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:46:28,441 INFO L130 PetriNetUnfolder]: 34/592 cut-off events. [2022-11-20 12:46:28,441 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-20 12:46:28,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 592 events. 34/592 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2029 event pairs, 11 based on Foata normal form. 0/555 useless extension candidates. Maximal degree in co-relation 411. Up to 45 conditions per place. [2022-11-20 12:46:28,448 INFO L137 encePairwiseOnDemand]: 169/174 looper letters, 16 selfloop transitions, 4 changer transitions 0/162 dead transitions. [2022-11-20 12:46:28,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 162 transitions, 388 flow [2022-11-20 12:46:28,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:46:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:46:28,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 637 transitions. [2022-11-20 12:46:28,452 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9152298850574713 [2022-11-20 12:46:28,452 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 637 transitions. [2022-11-20 12:46:28,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 637 transitions. [2022-11-20 12:46:28,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:46:28,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 637 transitions. [2022-11-20 12:46:28,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.25) internal successors, (637), 4 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:28,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:28,459 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:28,459 INFO L175 Difference]: Start difference. First operand has 155 places, 154 transitions, 327 flow. Second operand 4 states and 637 transitions. [2022-11-20 12:46:28,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 162 transitions, 388 flow [2022-11-20 12:46:28,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 162 transitions, 385 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:46:28,465 INFO L231 Difference]: Finished difference. Result has 159 places, 157 transitions, 352 flow [2022-11-20 12:46:28,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=352, PETRI_PLACES=159, PETRI_TRANSITIONS=157} [2022-11-20 12:46:28,467 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 0 predicate places. [2022-11-20 12:46:28,467 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 157 transitions, 352 flow [2022-11-20 12:46:28,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:28,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:46:28,468 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:46:28,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:46:28,469 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:46:28,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:28,470 INFO L85 PathProgramCache]: Analyzing trace with hash 250085817, now seen corresponding path program 1 times [2022-11-20 12:46:28,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:28,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627420030] [2022-11-20 12:46:28,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:28,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:28,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:46:28,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627420030] [2022-11-20 12:46:28,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627420030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:46:28,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:46:28,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:46:28,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947601619] [2022-11-20 12:46:28,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:46:28,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:46:28,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:46:28,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:46:28,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:46:28,646 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 174 [2022-11-20 12:46:28,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 157 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:28,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:46:28,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 174 [2022-11-20 12:46:28,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:46:29,006 INFO L130 PetriNetUnfolder]: 127/1269 cut-off events. [2022-11-20 12:46:29,007 INFO L131 PetriNetUnfolder]: For 90/100 co-relation queries the response was YES. [2022-11-20 12:46:29,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1674 conditions, 1269 events. 127/1269 cut-off events. For 90/100 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 6926 event pairs, 33 based on Foata normal form. 12/1207 useless extension candidates. Maximal degree in co-relation 1334. Up to 135 conditions per place. [2022-11-20 12:46:29,020 INFO L137 encePairwiseOnDemand]: 168/174 looper letters, 25 selfloop transitions, 4 changer transitions 0/169 dead transitions. [2022-11-20 12:46:29,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 169 transitions, 443 flow [2022-11-20 12:46:29,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:46:29,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:46:29,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2022-11-20 12:46:29,023 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9195402298850575 [2022-11-20 12:46:29,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2022-11-20 12:46:29,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2022-11-20 12:46:29,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:46:29,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2022-11-20 12:46:29,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:29,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:29,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:29,031 INFO L175 Difference]: Start difference. First operand has 159 places, 157 transitions, 352 flow. Second operand 3 states and 480 transitions. [2022-11-20 12:46:29,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 169 transitions, 443 flow [2022-11-20 12:46:29,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 169 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:46:29,040 INFO L231 Difference]: Finished difference. Result has 162 places, 161 transitions, 392 flow [2022-11-20 12:46:29,041 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=162, PETRI_TRANSITIONS=161} [2022-11-20 12:46:29,044 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 3 predicate places. [2022-11-20 12:46:29,044 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 161 transitions, 392 flow [2022-11-20 12:46:29,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:29,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:46:29,046 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:46:29,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:46:29,047 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:46:29,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:29,048 INFO L85 PathProgramCache]: Analyzing trace with hash -651773485, now seen corresponding path program 1 times [2022-11-20 12:46:29,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:29,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418905366] [2022-11-20 12:46:29,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:29,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:29,375 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:29,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:46:29,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418905366] [2022-11-20 12:46:29,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418905366] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:46:29,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922227143] [2022-11-20 12:46:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:29,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:46:29,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:46:29,380 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:46:29,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:46:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:29,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:46:29,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:46:29,902 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:29,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:46:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:30,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922227143] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:46:30,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:46:30,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 12:46:30,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672348762] [2022-11-20 12:46:30,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:46:30,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:46:30,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:46:30,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:46:30,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:46:30,127 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 174 [2022-11-20 12:46:30,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 161 transitions, 392 flow. Second operand has 10 states, 10 states have (on average 150.5) internal successors, (1505), 10 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:30,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:46:30,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 174 [2022-11-20 12:46:30,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:46:30,884 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([468] L1009-->L1011: Formula: (< 0 v_~top~0_7) InVars {~top~0=v_~top~0_7} OutVars{~top~0=v_~top~0_7} AuxVars[] AssignedVars[][182], [Black: 188#true, 30#L1023-4true, Black: 176#(= ~top~0 0), 114#L1011true, 194#true, 32#L946-2true, 190#(<= 1 ~top~0), Black: 181#(= |t1Thread1of1ForFork0_push_#res#1| 0), Black: 184#(and (= |t1Thread1of1ForFork0_push_#res#1| 0) (= |t1Thread1of1ForFork0_#t~ret41#1| 0)), t2Thread1of1ForFork1InUse]) [2022-11-20 12:46:30,885 INFO L383 tUnfolder$Statistics]: this new event has 187 ancestors and is cut-off event [2022-11-20 12:46:30,885 INFO L386 tUnfolder$Statistics]: existing Event has 166 ancestors and is cut-off event [2022-11-20 12:46:30,885 INFO L386 tUnfolder$Statistics]: existing Event has 167 ancestors and is cut-off event [2022-11-20 12:46:30,885 INFO L386 tUnfolder$Statistics]: existing Event has 159 ancestors and is cut-off event [2022-11-20 12:46:30,886 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([469] L1009-->L1009-1: Formula: (not (< 0 v_~top~0_13)) InVars {~top~0=v_~top~0_13} OutVars{~top~0=v_~top~0_13} AuxVars[] AssignedVars[][183], [Black: 190#(<= 1 ~top~0), 30#L1023-4true, Black: 176#(= ~top~0 0), 85#L1009-1true, 32#L946-2true, Black: 181#(= |t1Thread1of1ForFork0_push_#res#1| 0), Black: 184#(and (= |t1Thread1of1ForFork0_push_#res#1| 0) (= |t1Thread1of1ForFork0_#t~ret41#1| 0)), 226#(<= ~top~0 0), t2Thread1of1ForFork1InUse, 188#true]) [2022-11-20 12:46:30,886 INFO L383 tUnfolder$Statistics]: this new event has 187 ancestors and is cut-off event [2022-11-20 12:46:30,886 INFO L386 tUnfolder$Statistics]: existing Event has 166 ancestors and is cut-off event [2022-11-20 12:46:30,886 INFO L386 tUnfolder$Statistics]: existing Event has 167 ancestors and is cut-off event [2022-11-20 12:46:30,886 INFO L386 tUnfolder$Statistics]: existing Event has 159 ancestors and is cut-off event [2022-11-20 12:46:30,982 INFO L130 PetriNetUnfolder]: 388/2721 cut-off events. [2022-11-20 12:46:30,983 INFO L131 PetriNetUnfolder]: For 980/1066 co-relation queries the response was YES. [2022-11-20 12:46:30,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4165 conditions, 2721 events. 388/2721 cut-off events. For 980/1066 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 19094 event pairs, 64 based on Foata normal form. 38/2611 useless extension candidates. Maximal degree in co-relation 3627. Up to 300 conditions per place. [2022-11-20 12:46:31,002 INFO L137 encePairwiseOnDemand]: 165/174 looper letters, 86 selfloop transitions, 46 changer transitions 1/271 dead transitions. [2022-11-20 12:46:31,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 271 transitions, 1074 flow [2022-11-20 12:46:31,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:46:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:46:31,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2795 transitions. [2022-11-20 12:46:31,010 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8924010217113666 [2022-11-20 12:46:31,010 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2795 transitions. [2022-11-20 12:46:31,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2795 transitions. [2022-11-20 12:46:31,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:46:31,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2795 transitions. [2022-11-20 12:46:31,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 155.27777777777777) internal successors, (2795), 18 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:31,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:31,028 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:31,029 INFO L175 Difference]: Start difference. First operand has 162 places, 161 transitions, 392 flow. Second operand 18 states and 2795 transitions. [2022-11-20 12:46:31,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 271 transitions, 1074 flow [2022-11-20 12:46:31,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 271 transitions, 1012 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-11-20 12:46:31,037 INFO L231 Difference]: Finished difference. Result has 183 places, 216 transitions, 763 flow [2022-11-20 12:46:31,038 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=763, PETRI_PLACES=183, PETRI_TRANSITIONS=216} [2022-11-20 12:46:31,038 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 24 predicate places. [2022-11-20 12:46:31,039 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 216 transitions, 763 flow [2022-11-20 12:46:31,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 150.5) internal successors, (1505), 10 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:31,040 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:46:31,040 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:46:31,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:46:31,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:46:31,247 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:46:31,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:31,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1513057004, now seen corresponding path program 1 times [2022-11-20 12:46:31,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:31,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76622117] [2022-11-20 12:46:31,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:31,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:31,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:46:31,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76622117] [2022-11-20 12:46:31,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76622117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:46:31,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:46:31,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:46:31,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032629551] [2022-11-20 12:46:31,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:46:31,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:46:31,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:46:31,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:46:31,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:46:31,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 174 [2022-11-20 12:46:31,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 216 transitions, 763 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:31,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:46:31,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 174 [2022-11-20 12:46:31,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:46:31,802 INFO L130 PetriNetUnfolder]: 54/1109 cut-off events. [2022-11-20 12:46:31,802 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2022-11-20 12:46:31,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1518 conditions, 1109 events. 54/1109 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 4852 event pairs, 9 based on Foata normal form. 18/1084 useless extension candidates. Maximal degree in co-relation 1132. Up to 51 conditions per place. [2022-11-20 12:46:31,810 INFO L137 encePairwiseOnDemand]: 170/174 looper letters, 12 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2022-11-20 12:46:31,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 175 transitions, 540 flow [2022-11-20 12:46:31,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:46:31,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:46:31,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2022-11-20 12:46:31,812 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9080459770114943 [2022-11-20 12:46:31,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2022-11-20 12:46:31,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2022-11-20 12:46:31,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:46:31,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2022-11-20 12:46:31,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:31,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:31,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:31,816 INFO L175 Difference]: Start difference. First operand has 183 places, 216 transitions, 763 flow. Second operand 3 states and 474 transitions. [2022-11-20 12:46:31,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 175 transitions, 540 flow [2022-11-20 12:46:31,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 175 transitions, 518 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-11-20 12:46:31,823 INFO L231 Difference]: Finished difference. Result has 173 places, 173 transitions, 487 flow [2022-11-20 12:46:31,824 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=487, PETRI_PLACES=173, PETRI_TRANSITIONS=173} [2022-11-20 12:46:31,827 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 14 predicate places. [2022-11-20 12:46:31,827 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 173 transitions, 487 flow [2022-11-20 12:46:31,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:31,828 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:46:31,828 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:46:31,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:46:31,829 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:46:31,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:31,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1330472940, now seen corresponding path program 1 times [2022-11-20 12:46:31,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:31,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509499684] [2022-11-20 12:46:31,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:31,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:33,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:33,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:46:33,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509499684] [2022-11-20 12:46:33,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509499684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:46:33,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:46:33,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-20 12:46:33,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864068159] [2022-11-20 12:46:33,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:46:33,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:46:33,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:46:33,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:46:33,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:46:33,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2022-11-20 12:46:33,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 173 transitions, 487 flow. Second operand has 24 states, 24 states have (on average 97.54166666666667) internal successors, (2341), 24 states have internal predecessors, (2341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:33,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:46:33,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2022-11-20 12:46:33,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:46:40,203 INFO L130 PetriNetUnfolder]: 1122/4495 cut-off events. [2022-11-20 12:46:40,204 INFO L131 PetriNetUnfolder]: For 907/907 co-relation queries the response was YES. [2022-11-20 12:46:40,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8477 conditions, 4495 events. 1122/4495 cut-off events. For 907/907 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 31915 event pairs, 171 based on Foata normal form. 20/4366 useless extension candidates. Maximal degree in co-relation 5125. Up to 1458 conditions per place. [2022-11-20 12:46:40,242 INFO L137 encePairwiseOnDemand]: 137/174 looper letters, 249 selfloop transitions, 59 changer transitions 33/425 dead transitions. [2022-11-20 12:46:40,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 425 transitions, 1855 flow [2022-11-20 12:46:40,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 12:46:40,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-20 12:46:40,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 4491 transitions. [2022-11-20 12:46:40,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5865987460815048 [2022-11-20 12:46:40,257 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 4491 transitions. [2022-11-20 12:46:40,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 4491 transitions. [2022-11-20 12:46:40,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:46:40,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 4491 transitions. [2022-11-20 12:46:40,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 102.06818181818181) internal successors, (4491), 44 states have internal predecessors, (4491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:40,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 174.0) internal successors, (7830), 45 states have internal predecessors, (7830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:40,301 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 174.0) internal successors, (7830), 45 states have internal predecessors, (7830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:40,302 INFO L175 Difference]: Start difference. First operand has 173 places, 173 transitions, 487 flow. Second operand 44 states and 4491 transitions. [2022-11-20 12:46:40,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 425 transitions, 1855 flow [2022-11-20 12:46:40,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 425 transitions, 1851 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:46:40,317 INFO L231 Difference]: Finished difference. Result has 254 places, 228 transitions, 970 flow [2022-11-20 12:46:40,318 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=970, PETRI_PLACES=254, PETRI_TRANSITIONS=228} [2022-11-20 12:46:40,322 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 95 predicate places. [2022-11-20 12:46:40,322 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 228 transitions, 970 flow [2022-11-20 12:46:40,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 97.54166666666667) internal successors, (2341), 24 states have internal predecessors, (2341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:40,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:46:40,328 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:46:40,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:46:40,329 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:46:40,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:40,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1077744856, now seen corresponding path program 2 times [2022-11-20 12:46:40,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:40,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137554841] [2022-11-20 12:46:40,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:40,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:43,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:43,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:46:43,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137554841] [2022-11-20 12:46:43,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137554841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:46:43,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:46:43,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-20 12:46:43,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804023174] [2022-11-20 12:46:43,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:46:43,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 12:46:43,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:46:43,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 12:46:43,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2022-11-20 12:46:43,164 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 174 [2022-11-20 12:46:43,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 228 transitions, 970 flow. Second operand has 27 states, 27 states have (on average 86.55555555555556) internal successors, (2337), 27 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:43,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:46:43,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 174 [2022-11-20 12:46:43,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:46:49,702 INFO L130 PetriNetUnfolder]: 1753/7165 cut-off events. [2022-11-20 12:46:49,702 INFO L131 PetriNetUnfolder]: For 5339/5339 co-relation queries the response was YES. [2022-11-20 12:46:49,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16678 conditions, 7165 events. 1753/7165 cut-off events. For 5339/5339 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 55330 event pairs, 450 based on Foata normal form. 14/7051 useless extension candidates. Maximal degree in co-relation 11061. Up to 2345 conditions per place. [2022-11-20 12:46:49,812 INFO L137 encePairwiseOnDemand]: 136/174 looper letters, 289 selfloop transitions, 61 changer transitions 26/452 dead transitions. [2022-11-20 12:46:49,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 452 transitions, 2763 flow [2022-11-20 12:46:49,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 12:46:49,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 12:46:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3214 transitions. [2022-11-20 12:46:49,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5277504105090312 [2022-11-20 12:46:49,827 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3214 transitions. [2022-11-20 12:46:49,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3214 transitions. [2022-11-20 12:46:49,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:46:49,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3214 transitions. [2022-11-20 12:46:49,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 91.82857142857142) internal successors, (3214), 35 states have internal predecessors, (3214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:49,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:49,860 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:49,861 INFO L175 Difference]: Start difference. First operand has 254 places, 228 transitions, 970 flow. Second operand 35 states and 3214 transitions. [2022-11-20 12:46:49,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 452 transitions, 2763 flow [2022-11-20 12:46:49,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 452 transitions, 2751 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-20 12:46:49,899 INFO L231 Difference]: Finished difference. Result has 302 places, 263 transitions, 1445 flow [2022-11-20 12:46:49,900 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1445, PETRI_PLACES=302, PETRI_TRANSITIONS=263} [2022-11-20 12:46:49,901 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 143 predicate places. [2022-11-20 12:46:49,901 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 263 transitions, 1445 flow [2022-11-20 12:46:49,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 86.55555555555556) internal successors, (2337), 27 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:49,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:46:49,903 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:46:49,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:46:49,904 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:46:49,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:49,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1516631640, now seen corresponding path program 3 times [2022-11-20 12:46:49,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:49,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822642864] [2022-11-20 12:46:49,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:49,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:46:52,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:46:52,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822642864] [2022-11-20 12:46:52,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822642864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:46:52,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:46:52,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-11-20 12:46:52,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366433164] [2022-11-20 12:46:52,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:46:52,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 12:46:52,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:46:52,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 12:46:52,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2022-11-20 12:46:52,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-11-20 12:46:52,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 263 transitions, 1445 flow. Second operand has 29 states, 29 states have (on average 85.37931034482759) internal successors, (2476), 29 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:46:52,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:46:52,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-11-20 12:46:52,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:47:01,614 INFO L130 PetriNetUnfolder]: 2158/8856 cut-off events. [2022-11-20 12:47:01,615 INFO L131 PetriNetUnfolder]: For 9640/9643 co-relation queries the response was YES. [2022-11-20 12:47:01,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21725 conditions, 8856 events. 2158/8856 cut-off events. For 9640/9643 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 73501 event pairs, 288 based on Foata normal form. 33/8727 useless extension candidates. Maximal degree in co-relation 13612. Up to 1596 conditions per place. [2022-11-20 12:47:01,753 INFO L137 encePairwiseOnDemand]: 137/174 looper letters, 260 selfloop transitions, 127 changer transitions 33/496 dead transitions. [2022-11-20 12:47:01,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 496 transitions, 3344 flow [2022-11-20 12:47:01,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-20 12:47:01,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-20 12:47:01,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 4133 transitions. [2022-11-20 12:47:01,766 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5163668165917041 [2022-11-20 12:47:01,766 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 4133 transitions. [2022-11-20 12:47:01,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 4133 transitions. [2022-11-20 12:47:01,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:47:01,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 4133 transitions. [2022-11-20 12:47:01,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 89.84782608695652) internal successors, (4133), 46 states have internal predecessors, (4133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:01,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 174.0) internal successors, (8178), 47 states have internal predecessors, (8178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:01,803 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 174.0) internal successors, (8178), 47 states have internal predecessors, (8178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:01,804 INFO L175 Difference]: Start difference. First operand has 302 places, 263 transitions, 1445 flow. Second operand 46 states and 4133 transitions. [2022-11-20 12:47:01,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 496 transitions, 3344 flow [2022-11-20 12:47:01,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 496 transitions, 3291 flow, removed 7 selfloop flow, removed 14 redundant places. [2022-11-20 12:47:01,864 INFO L231 Difference]: Finished difference. Result has 360 places, 299 transitions, 2186 flow [2022-11-20 12:47:01,865 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1393, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=2186, PETRI_PLACES=360, PETRI_TRANSITIONS=299} [2022-11-20 12:47:01,866 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 201 predicate places. [2022-11-20 12:47:01,866 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 299 transitions, 2186 flow [2022-11-20 12:47:01,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 85.37931034482759) internal successors, (2476), 29 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:01,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:47:01,868 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:01,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:47:01,869 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:47:01,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:01,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1841304903, now seen corresponding path program 1 times [2022-11-20 12:47:01,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:01,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627431982] [2022-11-20 12:47:01,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:01,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:04,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:04,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627431982] [2022-11-20 12:47:04,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627431982] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:47:04,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715485207] [2022-11-20 12:47:04,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:04,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:04,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:04,105 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:04,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:47:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:04,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-20 12:47:04,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:06,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2022-11-20 12:47:07,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 23 [2022-11-20 12:47:08,261 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:08,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:47:09,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2022-11-20 12:47:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:47:10,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715485207] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:47:10,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:47:10,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [26, 26] total 68 [2022-11-20 12:47:10,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602065344] [2022-11-20 12:47:10,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:10,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:47:10,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:10,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:47:10,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=4315, Unknown=0, NotChecked=0, Total=4556 [2022-11-20 12:47:10,250 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2022-11-20 12:47:10,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 299 transitions, 2186 flow. Second operand has 22 states, 22 states have (on average 98.63636363636364) internal successors, (2170), 22 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:10,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:47:10,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2022-11-20 12:47:10,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:47:24,717 INFO L130 PetriNetUnfolder]: 3191/13218 cut-off events. [2022-11-20 12:47:24,718 INFO L131 PetriNetUnfolder]: For 24517/24520 co-relation queries the response was YES. [2022-11-20 12:47:24,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35868 conditions, 13218 events. 3191/13218 cut-off events. For 24517/24520 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 121561 event pairs, 433 based on Foata normal form. 9/12962 useless extension candidates. Maximal degree in co-relation 18638. Up to 1810 conditions per place. [2022-11-20 12:47:24,942 INFO L137 encePairwiseOnDemand]: 141/174 looper letters, 286 selfloop transitions, 255 changer transitions 3/628 dead transitions. [2022-11-20 12:47:24,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 628 transitions, 5255 flow [2022-11-20 12:47:24,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-20 12:47:24,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-11-20 12:47:24,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 6504 transitions. [2022-11-20 12:47:24,957 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5750663129973475 [2022-11-20 12:47:24,957 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 6504 transitions. [2022-11-20 12:47:24,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 6504 transitions. [2022-11-20 12:47:24,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:47:24,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 6504 transitions. [2022-11-20 12:47:24,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 100.06153846153846) internal successors, (6504), 65 states have internal predecessors, (6504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:24,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 174.0) internal successors, (11484), 66 states have internal predecessors, (11484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:24,998 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 174.0) internal successors, (11484), 66 states have internal predecessors, (11484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:24,998 INFO L175 Difference]: Start difference. First operand has 360 places, 299 transitions, 2186 flow. Second operand 65 states and 6504 transitions. [2022-11-20 12:47:24,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 628 transitions, 5255 flow [2022-11-20 12:47:25,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 628 transitions, 4896 flow, removed 154 selfloop flow, removed 18 redundant places. [2022-11-20 12:47:25,180 INFO L231 Difference]: Finished difference. Result has 423 places, 449 transitions, 3980 flow [2022-11-20 12:47:25,181 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2006, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=3980, PETRI_PLACES=423, PETRI_TRANSITIONS=449} [2022-11-20 12:47:25,182 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 264 predicate places. [2022-11-20 12:47:25,183 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 449 transitions, 3980 flow [2022-11-20 12:47:25,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 98.63636363636364) internal successors, (2170), 22 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:25,184 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:47:25,184 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:25,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:25,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:25,392 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:47:25,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:25,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1274399427, now seen corresponding path program 2 times [2022-11-20 12:47:25,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:25,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136369776] [2022-11-20 12:47:25,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:25,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:28,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:28,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136369776] [2022-11-20 12:47:28,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136369776] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:47:28,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714697432] [2022-11-20 12:47:28,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:47:28,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:28,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:28,672 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:28,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:47:28,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:47:28,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:47:28,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-20 12:47:28,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:29,042 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:47:29,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:47:29,064 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:47:29,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 12:47:30,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2022-11-20 12:47:30,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 54 [2022-11-20 12:47:32,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 23 [2022-11-20 12:47:32,699 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:47:32,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:47:34,023 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:47:34,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-20 12:47:34,035 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:47:34,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2022-11-20 12:47:34,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2022-11-20 12:47:35,697 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 12:47:35,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-20 12:47:35,702 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:47:35,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714697432] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:47:35,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:47:35,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26, 26] total 74 [2022-11-20 12:47:35,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924367307] [2022-11-20 12:47:35,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:47:35,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-11-20 12:47:35,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:35,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-11-20 12:47:35,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=5147, Unknown=12, NotChecked=0, Total=5402 [2022-11-20 12:47:35,716 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 174 [2022-11-20 12:47:35,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 449 transitions, 3980 flow. Second operand has 74 states, 74 states have (on average 87.39189189189189) internal successors, (6467), 74 states have internal predecessors, (6467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:35,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:47:35,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 174 [2022-11-20 12:47:35,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:48:51,014 INFO L130 PetriNetUnfolder]: 4359/17790 cut-off events. [2022-11-20 12:48:51,014 INFO L131 PetriNetUnfolder]: For 37804/37811 co-relation queries the response was YES. [2022-11-20 12:48:51,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50938 conditions, 17790 events. 4359/17790 cut-off events. For 37804/37811 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 178513 event pairs, 188 based on Foata normal form. 20/17493 useless extension candidates. Maximal degree in co-relation 42154. Up to 2502 conditions per place. [2022-11-20 12:48:51,396 INFO L137 encePairwiseOnDemand]: 134/174 looper letters, 484 selfloop transitions, 526 changer transitions 22/1108 dead transitions. [2022-11-20 12:48:51,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 1108 transitions, 9940 flow [2022-11-20 12:48:51,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-11-20 12:48:51,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2022-11-20 12:48:51,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 13164 transitions. [2022-11-20 12:48:51,439 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5077528349919 [2022-11-20 12:48:51,440 INFO L72 ComplementDD]: Start complementDD. Operand 149 states and 13164 transitions. [2022-11-20 12:48:51,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 149 states and 13164 transitions. [2022-11-20 12:48:51,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:48:51,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 149 states and 13164 transitions. [2022-11-20 12:48:51,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 150 states, 149 states have (on average 88.3489932885906) internal successors, (13164), 149 states have internal predecessors, (13164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:51,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 150 states, 150 states have (on average 174.0) internal successors, (26100), 150 states have internal predecessors, (26100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:51,543 INFO L81 ComplementDD]: Finished complementDD. Result has 150 states, 150 states have (on average 174.0) internal successors, (26100), 150 states have internal predecessors, (26100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:51,543 INFO L175 Difference]: Start difference. First operand has 423 places, 449 transitions, 3980 flow. Second operand 149 states and 13164 transitions. [2022-11-20 12:48:51,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 1108 transitions, 9940 flow [2022-11-20 12:48:51,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 1108 transitions, 8916 flow, removed 482 selfloop flow, removed 9 redundant places. [2022-11-20 12:48:52,017 INFO L231 Difference]: Finished difference. Result has 580 places, 705 transitions, 6763 flow [2022-11-20 12:48:52,020 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3524, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=149, PETRI_FLOW=6763, PETRI_PLACES=580, PETRI_TRANSITIONS=705} [2022-11-20 12:48:52,021 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 421 predicate places. [2022-11-20 12:48:52,021 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 705 transitions, 6763 flow [2022-11-20 12:48:52,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 87.39189189189189) internal successors, (6467), 74 states have internal predecessors, (6467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:52,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:48:52,024 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:48:52,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:48:52,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:48:52,238 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:48:52,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:52,239 INFO L85 PathProgramCache]: Analyzing trace with hash -738070129, now seen corresponding path program 1 times [2022-11-20 12:48:52,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:48:52,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767874050] [2022-11-20 12:48:52,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:52,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:48:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:52,843 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 12:48:52,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:48:52,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767874050] [2022-11-20 12:48:52,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767874050] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:48:52,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127156901] [2022-11-20 12:48:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:52,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:48:52,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:48:52,846 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:48:52,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:48:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:53,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:48:53,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:48:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 12:48:53,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:48:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 12:48:53,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127156901] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:48:53,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:48:53,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-11-20 12:48:53,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433260143] [2022-11-20 12:48:53,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:48:53,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:48:53,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:48:53,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:48:53,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:48:53,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-11-20 12:48:53,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 705 transitions, 6763 flow. Second operand has 16 states, 16 states have (on average 149.375) internal successors, (2390), 16 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:53,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:48:53,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-11-20 12:48:53,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:48:58,406 INFO L130 PetriNetUnfolder]: 693/8437 cut-off events. [2022-11-20 12:48:58,406 INFO L131 PetriNetUnfolder]: For 21843/21844 co-relation queries the response was YES. [2022-11-20 12:48:58,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23438 conditions, 8437 events. 693/8437 cut-off events. For 21843/21844 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 75674 event pairs, 164 based on Foata normal form. 26/8274 useless extension candidates. Maximal degree in co-relation 21361. Up to 345 conditions per place. [2022-11-20 12:48:58,556 INFO L137 encePairwiseOnDemand]: 164/174 looper letters, 120 selfloop transitions, 203 changer transitions 1/806 dead transitions. [2022-11-20 12:48:58,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 806 transitions, 8230 flow [2022-11-20 12:48:58,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 12:48:58,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 12:48:58,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3302 transitions. [2022-11-20 12:48:58,566 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8625914315569488 [2022-11-20 12:48:58,566 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3302 transitions. [2022-11-20 12:48:58,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3302 transitions. [2022-11-20 12:48:58,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:48:58,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3302 transitions. [2022-11-20 12:48:58,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 150.0909090909091) internal successors, (3302), 22 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:58,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:58,586 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:58,587 INFO L175 Difference]: Start difference. First operand has 580 places, 705 transitions, 6763 flow. Second operand 22 states and 3302 transitions. [2022-11-20 12:48:58,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 806 transitions, 8230 flow [2022-11-20 12:48:58,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 806 transitions, 7399 flow, removed 246 selfloop flow, removed 27 redundant places. [2022-11-20 12:48:58,945 INFO L231 Difference]: Finished difference. Result has 574 places, 738 transitions, 6853 flow [2022-11-20 12:48:58,947 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5964, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6853, PETRI_PLACES=574, PETRI_TRANSITIONS=738} [2022-11-20 12:48:58,947 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 415 predicate places. [2022-11-20 12:48:58,948 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 738 transitions, 6853 flow [2022-11-20 12:48:58,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 149.375) internal successors, (2390), 16 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:58,949 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:48:58,950 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:48:58,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 12:48:59,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:48:59,157 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:48:59,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:59,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2061411012, now seen corresponding path program 1 times [2022-11-20 12:48:59,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:48:59,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076082488] [2022-11-20 12:48:59,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:59,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:48:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:49:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:49:02,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:49:02,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076082488] [2022-11-20 12:49:02,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076082488] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:49:02,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265263408] [2022-11-20 12:49:02,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:49:02,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:49:02,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:49:02,514 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:49:02,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:49:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:49:02,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-20 12:49:02,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:49:04,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2022-11-20 12:49:06,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:49:06,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2022-11-20 12:49:09,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 23 [2022-11-20 12:49:09,344 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 5 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:49:09,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:49:13,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 48 [2022-11-20 12:49:15,054 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:49:15,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265263408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:49:15,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:49:15,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 34, 32] total 91 [2022-11-20 12:49:15,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856172178] [2022-11-20 12:49:15,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:49:15,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-11-20 12:49:15,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:49:15,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-11-20 12:49:15,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=7517, Unknown=0, NotChecked=0, Total=8190 [2022-11-20 12:49:15,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2022-11-20 12:49:15,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 738 transitions, 6853 flow. Second operand has 91 states, 91 states have (on average 98.31868131868131) internal successors, (8947), 91 states have internal predecessors, (8947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:49:15,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:49:15,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2022-11-20 12:49:15,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:19,315 INFO L130 PetriNetUnfolder]: 7567/30872 cut-off events. [2022-11-20 12:50:19,315 INFO L131 PetriNetUnfolder]: For 68466/68473 co-relation queries the response was YES. [2022-11-20 12:50:19,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90108 conditions, 30872 events. 7567/30872 cut-off events. For 68466/68473 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 313558 event pairs, 2031 based on Foata normal form. 129/30464 useless extension candidates. Maximal degree in co-relation 83968. Up to 9513 conditions per place. [2022-11-20 12:50:20,077 INFO L137 encePairwiseOnDemand]: 130/174 looper letters, 1409 selfloop transitions, 528 changer transitions 87/2108 dead transitions. [2022-11-20 12:50:20,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 748 places, 2108 transitions, 20186 flow [2022-11-20 12:50:20,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2022-11-20 12:50:20,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2022-11-20 12:50:20,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 17643 transitions. [2022-11-20 12:50:20,105 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5794088669950739 [2022-11-20 12:50:20,106 INFO L72 ComplementDD]: Start complementDD. Operand 175 states and 17643 transitions. [2022-11-20 12:50:20,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 175 states and 17643 transitions. [2022-11-20 12:50:20,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:20,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 175 states and 17643 transitions. [2022-11-20 12:50:20,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 176 states, 175 states have (on average 100.81714285714285) internal successors, (17643), 175 states have internal predecessors, (17643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:20,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 176 states, 176 states have (on average 174.0) internal successors, (30624), 176 states have internal predecessors, (30624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:20,191 INFO L81 ComplementDD]: Finished complementDD. Result has 176 states, 176 states have (on average 174.0) internal successors, (30624), 176 states have internal predecessors, (30624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:20,191 INFO L175 Difference]: Start difference. First operand has 574 places, 738 transitions, 6853 flow. Second operand 175 states and 17643 transitions. [2022-11-20 12:50:20,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 748 places, 2108 transitions, 20186 flow [2022-11-20 12:50:20,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 740 places, 2108 transitions, 19720 flow, removed 151 selfloop flow, removed 8 redundant places. [2022-11-20 12:50:20,994 INFO L231 Difference]: Finished difference. Result has 856 places, 1170 transitions, 13227 flow [2022-11-20 12:50:20,997 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=6615, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=175, PETRI_FLOW=13227, PETRI_PLACES=856, PETRI_TRANSITIONS=1170} [2022-11-20 12:50:21,000 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 697 predicate places. [2022-11-20 12:50:21,000 INFO L495 AbstractCegarLoop]: Abstraction has has 856 places, 1170 transitions, 13227 flow [2022-11-20 12:50:21,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 98.31868131868131) internal successors, (8947), 91 states have internal predecessors, (8947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:21,003 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:21,003 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:21,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:21,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 12:50:21,210 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:50:21,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:21,211 INFO L85 PathProgramCache]: Analyzing trace with hash 141346002, now seen corresponding path program 2 times [2022-11-20 12:50:21,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:21,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685957950] [2022-11-20 12:50:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:21,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:25,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:25,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685957950] [2022-11-20 12:50:25,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685957950] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:50:25,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744408051] [2022-11-20 12:50:25,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:50:25,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:25,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:50:25,005 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:50:25,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf866cdc-8aa2-489e-be63-95ab434cf317/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:50:25,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:50:25,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:50:25,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-20 12:50:25,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:25,442 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:50:25,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:50:25,462 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:50:25,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 12:50:26,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2022-11-20 12:50:26,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 54 [2022-11-20 12:50:28,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:50:28,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 43 [2022-11-20 12:50:30,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 23 [2022-11-20 12:50:31,361 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:31,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:50:35,161 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:35,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-20 12:50:35,174 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:35,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2022-11-20 12:50:35,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2022-11-20 12:50:36,932 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 12:50:36,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-20 12:50:36,938 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:36,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744408051] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:50:36,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:50:36,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 33, 33] total 96 [2022-11-20 12:50:36,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478171658] [2022-11-20 12:50:36,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:50:36,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-20 12:50:36,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:36,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-20 12:50:36,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=8719, Unknown=8, NotChecked=0, Total=9120 [2022-11-20 12:50:36,949 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-11-20 12:50:36,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 856 places, 1170 transitions, 13227 flow. Second operand has 96 states, 96 states have (on average 86.32291666666667) internal successors, (8287), 96 states have internal predecessors, (8287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:36,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:36,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-11-20 12:50:36,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:54:22,273 INFO L130 PetriNetUnfolder]: 12295/50618 cut-off events. [2022-11-20 12:54:22,273 INFO L131 PetriNetUnfolder]: For 373959/373961 co-relation queries the response was YES.