./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_18-nested_rc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/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_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_18-nested_rc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bf117fc0bf8ae8b9ef4bb89156c7168763fcd2ba3d8567cd686924f85ad04dca --- 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 11:25:31,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:25:31,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:25:31,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:25:31,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:25:31,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:25:31,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:25:31,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:25:31,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:25:31,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:25:31,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:25:31,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:25:31,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:25:31,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:25:31,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:25:31,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:25:31,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:25:31,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:25:31,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:25:31,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:25:31,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:25:31,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:25:31,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:25:31,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:25:31,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:25:31,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:25:31,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:25:31,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:25:31,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:25:31,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:25:31,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:25:31,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:25:31,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:25:31,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:25:31,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:25:31,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:25:31,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:25:31,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:25:31,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:25:31,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:25:31,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:25:31,786 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 11:25:31,816 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:25:31,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:25:31,817 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:25:31,817 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:25:31,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:25:31,818 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:25:31,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:25:31,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:25:31,820 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:25:31,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:25:31,821 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:25:31,821 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:25:31,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:25:31,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:25:31,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:25:31,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:25:31,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:25:31,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:25:31,823 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 11:25:31,823 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:25:31,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:25:31,824 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:25:31,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:25:31,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:25:31,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:25:31,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:25:31,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:25:31,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:25:31,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:25:31,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:25:31,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:25:31,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:25:31,827 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:25:31,827 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:25:31,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:25:31,828 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_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf117fc0bf8ae8b9ef4bb89156c7168763fcd2ba3d8567cd686924f85ad04dca [2022-11-20 11:25:32,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:25:32,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:25:32,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:25:32,215 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:25:32,216 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:25:32,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/09-regions_18-nested_rc.i [2022-11-20 11:25:35,904 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:25:36,303 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:25:36,304 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/sv-benchmarks/c/goblint-regression/09-regions_18-nested_rc.i [2022-11-20 11:25:36,326 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/data/b031bcb22/7e56d3a5378d42609f4d01cbb6822b19/FLAG2c31c5b9b [2022-11-20 11:25:36,351 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/data/b031bcb22/7e56d3a5378d42609f4d01cbb6822b19 [2022-11-20 11:25:36,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:25:36,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:25:36,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:25:36,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:25:36,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:25:36,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:25:36" (1/1) ... [2022-11-20 11:25:36,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24fa5fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:36, skipping insertion in model container [2022-11-20 11:25:36,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:25:36" (1/1) ... [2022-11-20 11:25:36,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:25:36,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:25:37,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:25:37,223 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:25:37,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:25:37,410 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:25:37,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:37 WrapperNode [2022-11-20 11:25:37,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:25:37,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:25:37,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:25:37,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:25:37,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:37" (1/1) ... [2022-11-20 11:25:37,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:37" (1/1) ... [2022-11-20 11:25:37,513 INFO L138 Inliner]: procedures = 370, calls = 29, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 226 [2022-11-20 11:25:37,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:25:37,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:25:37,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:25:37,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:25:37,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:37" (1/1) ... [2022-11-20 11:25:37,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:37" (1/1) ... [2022-11-20 11:25:37,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:37" (1/1) ... [2022-11-20 11:25:37,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:37" (1/1) ... [2022-11-20 11:25:37,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:37" (1/1) ... [2022-11-20 11:25:37,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:37" (1/1) ... [2022-11-20 11:25:37,575 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:37" (1/1) ... [2022-11-20 11:25:37,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:37" (1/1) ... [2022-11-20 11:25:37,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:25:37,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:25:37,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:25:37,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:25:37,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:37" (1/1) ... [2022-11-20 11:25:37,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:25:37,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:37,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:25:37,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:25:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:25:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:25:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:25:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:25:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:25:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:25:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:25:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:25:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:25:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 11:25:37,719 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 11:25:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:25:37,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:25:37,721 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 11:25:37,991 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:25:37,993 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:25:38,816 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:25:38,838 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:25:38,838 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:25:38,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:25:38 BoogieIcfgContainer [2022-11-20 11:25:38,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:25:38,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:25:38,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:25:38,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:25:38,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:25:36" (1/3) ... [2022-11-20 11:25:38,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48fc1ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:25:38, skipping insertion in model container [2022-11-20 11:25:38,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:37" (2/3) ... [2022-11-20 11:25:38,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48fc1ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:25:38, skipping insertion in model container [2022-11-20 11:25:38,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:25:38" (3/3) ... [2022-11-20 11:25:38,862 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_18-nested_rc.i [2022-11-20 11:25:38,876 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:25:38,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:25:38,890 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-20 11:25:38,890 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:25:39,058 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:25:39,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 273 transitions, 551 flow [2022-11-20 11:25:39,272 INFO L130 PetriNetUnfolder]: 4/272 cut-off events. [2022-11-20 11:25:39,273 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:25:39,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 272 events. 4/272 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 146. Up to 2 conditions per place. [2022-11-20 11:25:39,281 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 273 transitions, 551 flow [2022-11-20 11:25:39,289 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 272 transitions, 547 flow [2022-11-20 11:25:39,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:25:39,313 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;@67f3b435, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:25:39,314 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-20 11:25:39,329 INFO L130 PetriNetUnfolder]: 3/47 cut-off events. [2022-11-20 11:25:39,331 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:25:39,332 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:39,333 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] [2022-11-20 11:25:39,334 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:25:39,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:39,343 INFO L85 PathProgramCache]: Analyzing trace with hash -400245388, now seen corresponding path program 1 times [2022-11-20 11:25:39,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:39,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471572797] [2022-11-20 11:25:39,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:39,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,679 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 11:25:39,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:39,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471572797] [2022-11-20 11:25:39,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471572797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:39,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:39,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:25:39,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427878167] [2022-11-20 11:25:39,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:39,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:25:39,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:39,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:25:39,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:25:39,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 273 [2022-11-20 11:25:39,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 272 transitions, 547 flow. Second operand has 2 states, 2 states have (on average 269.5) internal successors, (539), 2 states have internal predecessors, (539), 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 11:25:39,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:39,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 273 [2022-11-20 11:25:39,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:39,944 INFO L130 PetriNetUnfolder]: 1/269 cut-off events. [2022-11-20 11:25:39,948 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:25:39,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 269 events. 1/269 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 111 event pairs, 0 based on Foata normal form. 3/251 useless extension candidates. Maximal degree in co-relation 144. Up to 2 conditions per place. [2022-11-20 11:25:39,951 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 1 selfloop transitions, 0 changer transitions 1/269 dead transitions. [2022-11-20 11:25:39,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 269 transitions, 543 flow [2022-11-20 11:25:39,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:25:39,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:25:39,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 542 transitions. [2022-11-20 11:25:39,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9926739926739927 [2022-11-20 11:25:39,982 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 542 transitions. [2022-11-20 11:25:39,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 542 transitions. [2022-11-20 11:25:39,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:39,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 542 transitions. [2022-11-20 11:25:40,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 271.0) internal successors, (542), 2 states have internal predecessors, (542), 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 11:25:40,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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 11:25:40,014 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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 11:25:40,016 INFO L175 Difference]: Start difference. First operand has 272 places, 272 transitions, 547 flow. Second operand 2 states and 542 transitions. [2022-11-20 11:25:40,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 269 transitions, 543 flow [2022-11-20 11:25:40,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 269 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:25:40,042 INFO L231 Difference]: Finished difference. Result has 272 places, 268 transitions, 538 flow [2022-11-20 11:25:40,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=538, PETRI_PLACES=272, PETRI_TRANSITIONS=268} [2022-11-20 11:25:40,054 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 0 predicate places. [2022-11-20 11:25:40,055 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 268 transitions, 538 flow [2022-11-20 11:25:40,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 269.5) internal successors, (539), 2 states have internal predecessors, (539), 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 11:25:40,056 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:40,057 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] [2022-11-20 11:25:40,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:25:40,058 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:25:40,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:40,060 INFO L85 PathProgramCache]: Analyzing trace with hash 561368629, now seen corresponding path program 1 times [2022-11-20 11:25:40,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:40,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803574616] [2022-11-20 11:25:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:40,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:40,251 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 11:25:40,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:40,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803574616] [2022-11-20 11:25:40,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803574616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:40,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:40,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:25:40,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692669181] [2022-11-20 11:25:40,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:40,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:25:40,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:40,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:25:40,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:25:40,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 273 [2022-11-20 11:25:40,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 268 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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 11:25:40,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:40,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 273 [2022-11-20 11:25:40,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:40,354 INFO L130 PetriNetUnfolder]: 1/272 cut-off events. [2022-11-20 11:25:40,354 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:25:40,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 272 events. 1/272 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 108 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 286. Up to 9 conditions per place. [2022-11-20 11:25:40,356 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 10 selfloop transitions, 2 changer transitions 0/272 dead transitions. [2022-11-20 11:25:40,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 272 transitions, 570 flow [2022-11-20 11:25:40,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:25:40,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:25:40,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 799 transitions. [2022-11-20 11:25:40,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9755799755799756 [2022-11-20 11:25:40,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 799 transitions. [2022-11-20 11:25:40,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 799 transitions. [2022-11-20 11:25:40,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:40,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 799 transitions. [2022-11-20 11:25:40,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 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 11:25:40,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 11:25:40,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 11:25:40,370 INFO L175 Difference]: Start difference. First operand has 272 places, 268 transitions, 538 flow. Second operand 3 states and 799 transitions. [2022-11-20 11:25:40,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 272 transitions, 570 flow [2022-11-20 11:25:40,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 272 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:25:40,383 INFO L231 Difference]: Finished difference. Result has 274 places, 269 transitions, 550 flow [2022-11-20 11:25:40,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=274, PETRI_TRANSITIONS=269} [2022-11-20 11:25:40,385 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 2 predicate places. [2022-11-20 11:25:40,385 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 269 transitions, 550 flow [2022-11-20 11:25:40,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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 11:25:40,387 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:40,387 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] [2022-11-20 11:25:40,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:25:40,389 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:25:40,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:40,401 INFO L85 PathProgramCache]: Analyzing trace with hash -282043731, now seen corresponding path program 1 times [2022-11-20 11:25:40,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:40,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104120340] [2022-11-20 11:25:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:40,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:40,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:40,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:40,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104120340] [2022-11-20 11:25:40,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104120340] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:40,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641156776] [2022-11-20 11:25:40,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:40,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:40,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:40,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:40,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:25:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:40,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:25:40,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:40,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:40,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:25:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:40,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641156776] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:25:40,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:25:40,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:25:40,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805828001] [2022-11-20 11:25:40,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:25:40,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:25:40,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:40,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:25:40,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:25:40,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 273 [2022-11-20 11:25:40,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 269 transitions, 550 flow. Second operand has 10 states, 10 states have (on average 263.0) internal successors, (2630), 10 states have internal predecessors, (2630), 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 11:25:40,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:40,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 273 [2022-11-20 11:25:40,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:41,210 INFO L130 PetriNetUnfolder]: 1/279 cut-off events. [2022-11-20 11:25:41,210 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:25:41,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 279 events. 1/279 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 102 event pairs, 0 based on Foata normal form. 2/262 useless extension candidates. Maximal degree in co-relation 307. Up to 6 conditions per place. [2022-11-20 11:25:41,212 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 11 selfloop transitions, 9 changer transitions 0/279 dead transitions. [2022-11-20 11:25:41,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 279 transitions, 612 flow [2022-11-20 11:25:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:25:41,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:25:41,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2371 transitions. [2022-11-20 11:25:41,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.964997964997965 [2022-11-20 11:25:41,220 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2371 transitions. [2022-11-20 11:25:41,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2371 transitions. [2022-11-20 11:25:41,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:41,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2371 transitions. [2022-11-20 11:25:41,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 263.44444444444446) internal successors, (2371), 9 states have internal predecessors, (2371), 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 11:25:41,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 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 11:25:41,237 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 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 11:25:41,238 INFO L175 Difference]: Start difference. First operand has 274 places, 269 transitions, 550 flow. Second operand 9 states and 2371 transitions. [2022-11-20 11:25:41,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 279 transitions, 612 flow [2022-11-20 11:25:41,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 279 transitions, 610 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:25:41,245 INFO L231 Difference]: Finished difference. Result has 284 places, 275 transitions, 598 flow [2022-11-20 11:25:41,246 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=598, PETRI_PLACES=284, PETRI_TRANSITIONS=275} [2022-11-20 11:25:41,250 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 12 predicate places. [2022-11-20 11:25:41,251 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 275 transitions, 598 flow [2022-11-20 11:25:41,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 263.0) internal successors, (2630), 10 states have internal predecessors, (2630), 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 11:25:41,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:41,254 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:41,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:41,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:41,455 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:25:41,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:41,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1558040659, now seen corresponding path program 2 times [2022-11-20 11:25:41,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:41,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688831861] [2022-11-20 11:25:41,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:41,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:41,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:41,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688831861] [2022-11-20 11:25:41,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688831861] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:41,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178672716] [2022-11-20 11:25:41,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:25:41,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:41,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:41,791 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:41,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:25:41,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:25:41,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:25:41,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 11:25:41,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:42,006 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 11 treesize of output 7 [2022-11-20 11:25:42,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:25:42,043 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 21 treesize of output 20 [2022-11-20 11:25:42,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:25:42,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:25:42,103 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:25:42,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 11:25:42,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:25:42,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:25:42,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:25:42,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:25:42,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 11:25:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:25:42,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:42,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178672716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:42,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:42,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2022-11-20 11:25:42,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491336157] [2022-11-20 11:25:42,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:42,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:25:42,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:42,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:25:42,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:25:42,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 273 [2022-11-20 11:25:42,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 275 transitions, 598 flow. Second operand has 8 states, 8 states have (on average 144.375) internal successors, (1155), 8 states have internal predecessors, (1155), 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 11:25:42,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:42,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 273 [2022-11-20 11:25:42,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:43,384 INFO L130 PetriNetUnfolder]: 649/2115 cut-off events. [2022-11-20 11:25:43,384 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-20 11:25:43,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3570 conditions, 2115 events. 649/2115 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 11520 event pairs, 648 based on Foata normal form. 0/1865 useless extension candidates. Maximal degree in co-relation 3563. Up to 1405 conditions per place. [2022-11-20 11:25:43,411 INFO L137 encePairwiseOnDemand]: 254/273 looper letters, 108 selfloop transitions, 17 changer transitions 0/273 dead transitions. [2022-11-20 11:25:43,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 273 transitions, 844 flow [2022-11-20 11:25:43,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:25:43,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:25:43,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1414 transitions. [2022-11-20 11:25:43,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5754985754985755 [2022-11-20 11:25:43,416 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1414 transitions. [2022-11-20 11:25:43,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1414 transitions. [2022-11-20 11:25:43,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:43,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1414 transitions. [2022-11-20 11:25:43,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 157.11111111111111) internal successors, (1414), 9 states have internal predecessors, (1414), 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 11:25:43,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 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 11:25:43,504 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 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 11:25:43,504 INFO L175 Difference]: Start difference. First operand has 284 places, 275 transitions, 598 flow. Second operand 9 states and 1414 transitions. [2022-11-20 11:25:43,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 273 transitions, 844 flow [2022-11-20 11:25:43,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 273 transitions, 838 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-20 11:25:43,515 INFO L231 Difference]: Finished difference. Result has 289 places, 273 transitions, 622 flow [2022-11-20 11:25:43,515 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=622, PETRI_PLACES=289, PETRI_TRANSITIONS=273} [2022-11-20 11:25:43,517 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 17 predicate places. [2022-11-20 11:25:43,518 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 273 transitions, 622 flow [2022-11-20 11:25:43,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 144.375) internal successors, (1155), 8 states have internal predecessors, (1155), 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 11:25:43,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:43,519 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:43,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:43,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:43,727 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:25:43,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:43,727 INFO L85 PathProgramCache]: Analyzing trace with hash -446848116, now seen corresponding path program 1 times [2022-11-20 11:25:43,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:43,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28605338] [2022-11-20 11:25:43,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:43,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:43,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:43,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28605338] [2022-11-20 11:25:43,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28605338] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:43,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697252435] [2022-11-20 11:25:43,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:43,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:43,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:43,981 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:44,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:25:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:44,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:25:44,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:44,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:44,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:25:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:44,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697252435] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:25:44,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:25:44,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 11:25:44,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217132463] [2022-11-20 11:25:44,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:25:44,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:25:44,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:44,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:25:44,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:25:44,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 273 [2022-11-20 11:25:44,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 273 transitions, 622 flow. Second operand has 18 states, 18 states have (on average 263.22222222222223) internal successors, (4738), 18 states have internal predecessors, (4738), 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 11:25:44,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:44,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 273 [2022-11-20 11:25:44,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:44,763 INFO L130 PetriNetUnfolder]: 1/297 cut-off events. [2022-11-20 11:25:44,763 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-20 11:25:44,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 297 events. 1/297 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 102 event pairs, 0 based on Foata normal form. 4/284 useless extension candidates. Maximal degree in co-relation 402. Up to 11 conditions per place. [2022-11-20 11:25:44,765 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 19 selfloop transitions, 21 changer transitions 0/297 dead transitions. [2022-11-20 11:25:44,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 297 transitions, 802 flow [2022-11-20 11:25:44,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:25:44,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:25:44,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5525 transitions. [2022-11-20 11:25:44,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.963718820861678 [2022-11-20 11:25:44,779 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5525 transitions. [2022-11-20 11:25:44,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5525 transitions. [2022-11-20 11:25:44,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:44,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5525 transitions. [2022-11-20 11:25:44,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 263.0952380952381) internal successors, (5525), 21 states have internal predecessors, (5525), 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 11:25:44,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 273.0) internal successors, (6006), 22 states have internal predecessors, (6006), 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 11:25:44,813 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 273.0) internal successors, (6006), 22 states have internal predecessors, (6006), 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 11:25:44,813 INFO L175 Difference]: Start difference. First operand has 289 places, 273 transitions, 622 flow. Second operand 21 states and 5525 transitions. [2022-11-20 11:25:44,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 297 transitions, 802 flow [2022-11-20 11:25:44,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 297 transitions, 768 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-20 11:25:44,822 INFO L231 Difference]: Finished difference. Result has 306 places, 286 transitions, 718 flow [2022-11-20 11:25:44,823 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=718, PETRI_PLACES=306, PETRI_TRANSITIONS=286} [2022-11-20 11:25:44,823 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 34 predicate places. [2022-11-20 11:25:44,824 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 286 transitions, 718 flow [2022-11-20 11:25:44,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 263.22222222222223) internal successors, (4738), 18 states have internal predecessors, (4738), 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 11:25:44,826 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:44,827 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:44,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:45,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:45,034 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:25:45,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:45,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1811189132, now seen corresponding path program 2 times [2022-11-20 11:25:45,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:45,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505092381] [2022-11-20 11:25:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:45,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:45,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:45,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505092381] [2022-11-20 11:25:45,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505092381] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:45,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894371381] [2022-11-20 11:25:45,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:25:45,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:45,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:45,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:45,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:25:45,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:25:45,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:25:45,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:25:45,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:45,733 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 13 treesize of output 9 [2022-11-20 11:25:45,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 22 [2022-11-20 11:25:45,810 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:25:45,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-20 11:25:45,865 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:25:45,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2022-11-20 11:25:45,914 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-20 11:25:45,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:45,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894371381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:45,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:45,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2022-11-20 11:25:45,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525942848] [2022-11-20 11:25:45,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:45,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:25:45,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:45,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:25:45,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:25:45,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 273 [2022-11-20 11:25:45,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 286 transitions, 718 flow. Second operand has 6 states, 6 states have (on average 149.5) internal successors, (897), 6 states have internal predecessors, (897), 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 11:25:45,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:45,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 273 [2022-11-20 11:25:45,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:46,880 INFO L130 PetriNetUnfolder]: 649/2133 cut-off events. [2022-11-20 11:25:46,880 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-11-20 11:25:46,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3645 conditions, 2133 events. 649/2133 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 11497 event pairs, 648 based on Foata normal form. 0/1885 useless extension candidates. Maximal degree in co-relation 3633. Up to 1406 conditions per place. [2022-11-20 11:25:46,894 INFO L137 encePairwiseOnDemand]: 261/273 looper letters, 109 selfloop transitions, 10 changer transitions 0/284 dead transitions. [2022-11-20 11:25:46,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 284 transitions, 952 flow [2022-11-20 11:25:46,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:25:46,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:25:46,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1003 transitions. [2022-11-20 11:25:46,898 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6123321123321124 [2022-11-20 11:25:46,899 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1003 transitions. [2022-11-20 11:25:46,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1003 transitions. [2022-11-20 11:25:46,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:46,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1003 transitions. [2022-11-20 11:25:46,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.16666666666666) internal successors, (1003), 6 states have internal predecessors, (1003), 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 11:25:46,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 11:25:46,907 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 11:25:46,908 INFO L175 Difference]: Start difference. First operand has 306 places, 286 transitions, 718 flow. Second operand 6 states and 1003 transitions. [2022-11-20 11:25:46,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 284 transitions, 952 flow [2022-11-20 11:25:46,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 284 transitions, 928 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-20 11:25:46,922 INFO L231 Difference]: Finished difference. Result has 303 places, 284 transitions, 710 flow [2022-11-20 11:25:46,923 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=710, PETRI_PLACES=303, PETRI_TRANSITIONS=284} [2022-11-20 11:25:46,926 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 31 predicate places. [2022-11-20 11:25:46,926 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 284 transitions, 710 flow [2022-11-20 11:25:46,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.5) internal successors, (897), 6 states have internal predecessors, (897), 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 11:25:46,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:46,928 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:46,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:47,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:25:47,136 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:25:47,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:47,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2075465824, now seen corresponding path program 1 times [2022-11-20 11:25:47,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:47,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709915324] [2022-11-20 11:25:47,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:47,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:47,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:47,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709915324] [2022-11-20 11:25:47,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709915324] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:47,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286341690] [2022-11-20 11:25:47,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:47,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:47,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:47,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:47,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:25:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:47,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:25:47,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:48,063 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:48,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:25:48,351 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:48,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286341690] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:25:48,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:25:48,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-20 11:25:48,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992940128] [2022-11-20 11:25:48,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:25:48,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:25:48,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:48,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:25:48,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:25:48,362 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 273 [2022-11-20 11:25:48,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 284 transitions, 710 flow. Second operand has 23 states, 23 states have (on average 263.39130434782606) internal successors, (6058), 23 states have internal predecessors, (6058), 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 11:25:48,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:48,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 273 [2022-11-20 11:25:48,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:48,903 INFO L130 PetriNetUnfolder]: 1/310 cut-off events. [2022-11-20 11:25:48,903 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-20 11:25:48,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 310 events. 1/310 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 99 event pairs, 0 based on Foata normal form. 3/298 useless extension candidates. Maximal degree in co-relation 481. Up to 16 conditions per place. [2022-11-20 11:25:48,906 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 25 selfloop transitions, 30 changer transitions 0/310 dead transitions. [2022-11-20 11:25:48,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 310 transitions, 960 flow [2022-11-20 11:25:48,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:25:48,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:25:48,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7888 transitions. [2022-11-20 11:25:48,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9631257631257631 [2022-11-20 11:25:48,927 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7888 transitions. [2022-11-20 11:25:48,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7888 transitions. [2022-11-20 11:25:48,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:48,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7888 transitions. [2022-11-20 11:25:48,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 262.93333333333334) internal successors, (7888), 30 states have internal predecessors, (7888), 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 11:25:48,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 273.0) internal successors, (8463), 31 states have internal predecessors, (8463), 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 11:25:48,974 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 273.0) internal successors, (8463), 31 states have internal predecessors, (8463), 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 11:25:48,974 INFO L175 Difference]: Start difference. First operand has 303 places, 284 transitions, 710 flow. Second operand 30 states and 7888 transitions. [2022-11-20 11:25:48,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 310 transitions, 960 flow [2022-11-20 11:25:48,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 310 transitions, 940 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:25:48,985 INFO L231 Difference]: Finished difference. Result has 331 places, 294 transitions, 842 flow [2022-11-20 11:25:48,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=842, PETRI_PLACES=331, PETRI_TRANSITIONS=294} [2022-11-20 11:25:48,987 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 59 predicate places. [2022-11-20 11:25:48,987 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 294 transitions, 842 flow [2022-11-20 11:25:48,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 263.39130434782606) internal successors, (6058), 23 states have internal predecessors, (6058), 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 11:25:48,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:48,991 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:49,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:49,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d908dd19-edd9-459b-bf6b-87b6b8d3bf55/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:49,198 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:25:49,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:49,199 INFO L85 PathProgramCache]: Analyzing trace with hash -523469032, now seen corresponding path program 2 times [2022-11-20 11:25:49,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:49,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523768451] [2022-11-20 11:25:49,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:49,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 11:25:50,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:50,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523768451] [2022-11-20 11:25:50,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523768451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:50,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:50,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:25:50,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984278913] [2022-11-20 11:25:50,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:50,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:25:50,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:50,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:25:50,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:25:50,167 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 273 [2022-11-20 11:25:50,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 294 transitions, 842 flow. Second operand has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 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 11:25:50,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:50,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 273 [2022-11-20 11:25:50,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:51,295 INFO L130 PetriNetUnfolder]: 820/2542 cut-off events. [2022-11-20 11:25:51,297 INFO L131 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2022-11-20 11:25:51,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4475 conditions, 2542 events. 820/2542 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 14358 event pairs, 819 based on Foata normal form. 0/2264 useless extension candidates. Maximal degree in co-relation 4459. Up to 1764 conditions per place. [2022-11-20 11:25:51,311 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 116 selfloop transitions, 5 changer transitions 0/293 dead transitions. [2022-11-20 11:25:51,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 293 transitions, 1082 flow [2022-11-20 11:25:51,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:25:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:25:51,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 986 transitions. [2022-11-20 11:25:51,319 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6019536019536019 [2022-11-20 11:25:51,320 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 986 transitions. [2022-11-20 11:25:51,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 986 transitions. [2022-11-20 11:25:51,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:51,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 986 transitions. [2022-11-20 11:25:51,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 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 11:25:51,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 11:25:51,327 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 11:25:51,327 INFO L175 Difference]: Start difference. First operand has 331 places, 294 transitions, 842 flow. Second operand 6 states and 986 transitions. [2022-11-20 11:25:51,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 293 transitions, 1082 flow [2022-11-20 11:25:51,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 293 transitions, 1036 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-20 11:25:51,335 INFO L231 Difference]: Finished difference. Result has 317 places, 293 transitions, 804 flow [2022-11-20 11:25:51,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=804, PETRI_PLACES=317, PETRI_TRANSITIONS=293} [2022-11-20 11:25:51,340 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 45 predicate places. [2022-11-20 11:25:51,341 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 293 transitions, 804 flow [2022-11-20 11:25:51,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 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 11:25:51,341 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:51,342 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:51,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:25:51,342 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:25:51,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:51,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2100327872, now seen corresponding path program 1 times [2022-11-20 11:25:51,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:51,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941829629] [2022-11-20 11:25:51,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:51,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 11:25:52,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:52,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941829629] [2022-11-20 11:25:52,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941829629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:52,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:52,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:25:52,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863746569] [2022-11-20 11:25:52,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:52,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:25:52,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:52,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:25:52,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:25:52,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 273 [2022-11-20 11:25:52,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 293 transitions, 804 flow. Second operand has 6 states, 6 states have (on average 152.5) internal successors, (915), 6 states have internal predecessors, (915), 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 11:25:52,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:52,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 273 [2022-11-20 11:25:52,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:54,154 INFO L130 PetriNetUnfolder]: 1446/4317 cut-off events. [2022-11-20 11:25:54,154 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-20 11:25:54,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7538 conditions, 4317 events. 1446/4317 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 29975 event pairs, 115 based on Foata normal form. 0/3866 useless extension candidates. Maximal degree in co-relation 7521. Up to 1891 conditions per place. [2022-11-20 11:25:54,185 INFO L137 encePairwiseOnDemand]: 245/273 looper letters, 217 selfloop transitions, 74 changer transitions 0/465 dead transitions. [2022-11-20 11:25:54,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 465 transitions, 1730 flow [2022-11-20 11:25:54,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:25:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:25:54,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1169 transitions. [2022-11-20 11:25:54,190 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7136752136752137 [2022-11-20 11:25:54,191 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1169 transitions. [2022-11-20 11:25:54,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1169 transitions. [2022-11-20 11:25:54,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:54,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1169 transitions. [2022-11-20 11:25:54,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 194.83333333333334) internal successors, (1169), 6 states have internal predecessors, (1169), 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 11:25:54,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 11:25:54,200 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 11:25:54,201 INFO L175 Difference]: Start difference. First operand has 317 places, 293 transitions, 804 flow. Second operand 6 states and 1169 transitions. [2022-11-20 11:25:54,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 465 transitions, 1730 flow [2022-11-20 11:25:54,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 465 transitions, 1720 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:25:54,215 INFO L231 Difference]: Finished difference. Result has 321 places, 360 transitions, 1266 flow [2022-11-20 11:25:54,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1266, PETRI_PLACES=321, PETRI_TRANSITIONS=360} [2022-11-20 11:25:54,217 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 49 predicate places. [2022-11-20 11:25:54,217 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 360 transitions, 1266 flow [2022-11-20 11:25:54,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.5) internal successors, (915), 6 states have internal predecessors, (915), 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 11:25:54,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:54,218 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:54,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:25:54,219 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:25:54,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:54,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1904946281, now seen corresponding path program 1 times [2022-11-20 11:25:54,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:54,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098975801] [2022-11-20 11:25:54,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:54,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 11:25:55,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:55,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098975801] [2022-11-20 11:25:55,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098975801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:55,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:55,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:25:55,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447657] [2022-11-20 11:25:55,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:55,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:25:55,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:55,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:25:55,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:25:55,045 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 273 [2022-11-20 11:25:55,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 360 transitions, 1266 flow. Second operand has 6 states, 6 states have (on average 163.33333333333334) internal successors, (980), 6 states have internal predecessors, (980), 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 11:25:55,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:55,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 273 [2022-11-20 11:25:55,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:56,469 INFO L130 PetriNetUnfolder]: 1207/3986 cut-off events. [2022-11-20 11:25:56,470 INFO L131 PetriNetUnfolder]: For 1354/1439 co-relation queries the response was YES. [2022-11-20 11:25:56,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8093 conditions, 3986 events. 1207/3986 cut-off events. For 1354/1439 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 26907 event pairs, 792 based on Foata normal form. 0/3585 useless extension candidates. Maximal degree in co-relation 8072. Up to 2566 conditions per place. [2022-11-20 11:25:56,498 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 169 selfloop transitions, 5 changer transitions 0/359 dead transitions. [2022-11-20 11:25:56,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 359 transitions, 1612 flow [2022-11-20 11:25:56,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:25:56,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:25:56,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1049 transitions. [2022-11-20 11:25:56,502 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6404151404151404 [2022-11-20 11:25:56,502 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1049 transitions. [2022-11-20 11:25:56,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1049 transitions. [2022-11-20 11:25:56,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:56,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1049 transitions. [2022-11-20 11:25:56,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 174.83333333333334) internal successors, (1049), 6 states have internal predecessors, (1049), 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 11:25:56,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 11:25:56,510 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 11:25:56,510 INFO L175 Difference]: Start difference. First operand has 321 places, 360 transitions, 1266 flow. Second operand 6 states and 1049 transitions. [2022-11-20 11:25:56,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 359 transitions, 1612 flow [2022-11-20 11:25:56,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 359 transitions, 1612 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:25:56,522 INFO L231 Difference]: Finished difference. Result has 325 places, 359 transitions, 1274 flow [2022-11-20 11:25:56,523 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1274, PETRI_PLACES=325, PETRI_TRANSITIONS=359} [2022-11-20 11:25:56,524 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 53 predicate places. [2022-11-20 11:25:56,524 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 359 transitions, 1274 flow [2022-11-20 11:25:56,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.33333333333334) internal successors, (980), 6 states have internal predecessors, (980), 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 11:25:56,525 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:56,525 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:56,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:25:56,526 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:25:56,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:56,526 INFO L85 PathProgramCache]: Analyzing trace with hash 2072698922, now seen corresponding path program 1 times [2022-11-20 11:25:56,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:56,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568780430] [2022-11-20 11:25:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:56,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 11:25:57,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:57,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568780430] [2022-11-20 11:25:57,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568780430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:57,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:57,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:25:57,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277429928] [2022-11-20 11:25:57,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:57,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:25:57,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:57,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:25:57,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:25:57,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 273 [2022-11-20 11:25:57,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 359 transitions, 1274 flow. Second operand has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 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 11:25:57,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:57,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 273 [2022-11-20 11:25:57,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:58,630 INFO L130 PetriNetUnfolder]: 1207/3985 cut-off events. [2022-11-20 11:25:58,630 INFO L131 PetriNetUnfolder]: For 1354/1439 co-relation queries the response was YES. [2022-11-20 11:25:58,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8099 conditions, 3985 events. 1207/3985 cut-off events. For 1354/1439 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 26990 event pairs, 792 based on Foata normal form. 0/3585 useless extension candidates. Maximal degree in co-relation 8077. Up to 2568 conditions per place. [2022-11-20 11:25:58,666 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 170 selfloop transitions, 5 changer transitions 0/358 dead transitions. [2022-11-20 11:25:58,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 358 transitions, 1622 flow [2022-11-20 11:25:58,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:25:58,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:25:58,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1038 transitions. [2022-11-20 11:25:58,671 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6336996336996337 [2022-11-20 11:25:58,671 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1038 transitions. [2022-11-20 11:25:58,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1038 transitions. [2022-11-20 11:25:58,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:58,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1038 transitions. [2022-11-20 11:25:58,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 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 11:25:58,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 11:25:58,680 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 11:25:58,681 INFO L175 Difference]: Start difference. First operand has 325 places, 359 transitions, 1274 flow. Second operand 6 states and 1038 transitions. [2022-11-20 11:25:58,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 358 transitions, 1622 flow [2022-11-20 11:25:58,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 358 transitions, 1612 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:25:58,697 INFO L231 Difference]: Finished difference. Result has 324 places, 358 transitions, 1272 flow [2022-11-20 11:25:58,698 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1272, PETRI_PLACES=324, PETRI_TRANSITIONS=358} [2022-11-20 11:25:58,699 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 52 predicate places. [2022-11-20 11:25:58,699 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 358 transitions, 1272 flow [2022-11-20 11:25:58,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 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 11:25:58,700 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:58,700 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:58,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:25:58,701 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:25:58,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:58,702 INFO L85 PathProgramCache]: Analyzing trace with hash 2000227336, now seen corresponding path program 1 times [2022-11-20 11:25:58,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:58,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009000046] [2022-11-20 11:25:58,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:58,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:59,546 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 11:25:59,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:59,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009000046] [2022-11-20 11:25:59,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009000046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:59,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:59,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:25:59,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914287600] [2022-11-20 11:25:59,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:59,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:25:59,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:59,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:25:59,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:25:59,551 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 273 [2022-11-20 11:25:59,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 358 transitions, 1272 flow. Second operand has 6 states, 6 states have (on average 163.33333333333334) internal successors, (980), 6 states have internal predecessors, (980), 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 11:25:59,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:59,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 273 [2022-11-20 11:25:59,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:00,990 INFO L130 PetriNetUnfolder]: 1207/3984 cut-off events. [2022-11-20 11:26:00,991 INFO L131 PetriNetUnfolder]: For 1357/1442 co-relation queries the response was YES. [2022-11-20 11:26:01,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8097 conditions, 3984 events. 1207/3984 cut-off events. For 1357/1442 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 26982 event pairs, 792 based on Foata normal form. 0/3585 useless extension candidates. Maximal degree in co-relation 8075. Up to 2567 conditions per place. [2022-11-20 11:26:01,020 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 169 selfloop transitions, 5 changer transitions 0/357 dead transitions. [2022-11-20 11:26:01,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 357 transitions, 1618 flow [2022-11-20 11:26:01,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:26:01,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:26:01,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1037 transitions. [2022-11-20 11:26:01,025 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6330891330891331 [2022-11-20 11:26:01,025 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1037 transitions. [2022-11-20 11:26:01,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1037 transitions. [2022-11-20 11:26:01,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:01,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1037 transitions. [2022-11-20 11:26:01,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 172.83333333333334) internal successors, (1037), 6 states have internal predecessors, (1037), 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 11:26:01,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 11:26:01,035 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 11:26:01,035 INFO L175 Difference]: Start difference. First operand has 324 places, 358 transitions, 1272 flow. Second operand 6 states and 1037 transitions. [2022-11-20 11:26:01,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 357 transitions, 1618 flow [2022-11-20 11:26:01,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 357 transitions, 1608 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:26:01,051 INFO L231 Difference]: Finished difference. Result has 323 places, 357 transitions, 1270 flow [2022-11-20 11:26:01,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1270, PETRI_PLACES=323, PETRI_TRANSITIONS=357} [2022-11-20 11:26:01,052 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 51 predicate places. [2022-11-20 11:26:01,052 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 357 transitions, 1270 flow [2022-11-20 11:26:01,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.33333333333334) internal successors, (980), 6 states have internal predecessors, (980), 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 11:26:01,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:01,054 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:01,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:26:01,054 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:26:01,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:01,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1869039751, now seen corresponding path program 1 times [2022-11-20 11:26:01,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:01,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244308898] [2022-11-20 11:26:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:01,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:02,057 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 11:26:02,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:02,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244308898] [2022-11-20 11:26:02,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244308898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:02,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:02,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:26:02,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991685269] [2022-11-20 11:26:02,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:02,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:26:02,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:02,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:26:02,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:26:02,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 273 [2022-11-20 11:26:02,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 357 transitions, 1270 flow. Second operand has 6 states, 6 states have (on average 166.83333333333334) internal successors, (1001), 6 states have internal predecessors, (1001), 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 11:26:02,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:02,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 273 [2022-11-20 11:26:02,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:03,996 INFO L130 PetriNetUnfolder]: 1524/4610 cut-off events. [2022-11-20 11:26:03,996 INFO L131 PetriNetUnfolder]: For 1497/1596 co-relation queries the response was YES. [2022-11-20 11:26:04,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9514 conditions, 4610 events. 1524/4610 cut-off events. For 1497/1596 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 31636 event pairs, 624 based on Foata normal form. 16/4206 useless extension candidates. Maximal degree in co-relation 9492. Up to 2609 conditions per place. [2022-11-20 11:26:04,040 INFO L137 encePairwiseOnDemand]: 250/273 looper letters, 251 selfloop transitions, 130 changer transitions 0/566 dead transitions. [2022-11-20 11:26:04,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 566 transitions, 2826 flow [2022-11-20 11:26:04,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:26:04,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:26:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1196 transitions. [2022-11-20 11:26:04,045 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7301587301587301 [2022-11-20 11:26:04,045 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1196 transitions. [2022-11-20 11:26:04,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1196 transitions. [2022-11-20 11:26:04,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:04,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1196 transitions. [2022-11-20 11:26:04,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.33333333333334) internal successors, (1196), 6 states have internal predecessors, (1196), 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 11:26:04,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 11:26:04,055 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 11:26:04,055 INFO L175 Difference]: Start difference. First operand has 323 places, 357 transitions, 1270 flow. Second operand 6 states and 1196 transitions. [2022-11-20 11:26:04,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 566 transitions, 2826 flow [2022-11-20 11:26:04,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 566 transitions, 2816 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:26:04,252 INFO L231 Difference]: Finished difference. Result has 328 places, 486 transitions, 2488 flow [2022-11-20 11:26:04,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2488, PETRI_PLACES=328, PETRI_TRANSITIONS=486} [2022-11-20 11:26:04,254 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 56 predicate places. [2022-11-20 11:26:04,254 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 486 transitions, 2488 flow [2022-11-20 11:26:04,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.83333333333334) internal successors, (1001), 6 states have internal predecessors, (1001), 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 11:26:04,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:04,255 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:04,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:26:04,255 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:26:04,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:04,256 INFO L85 PathProgramCache]: Analyzing trace with hash -45682255, now seen corresponding path program 1 times [2022-11-20 11:26:04,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:04,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927331676] [2022-11-20 11:26:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:04,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 11:26:05,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:05,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927331676] [2022-11-20 11:26:05,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927331676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:05,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:05,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:26:05,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612396555] [2022-11-20 11:26:05,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:05,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:26:05,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:05,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:26:05,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:26:05,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 273 [2022-11-20 11:26:05,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 486 transitions, 2488 flow. Second operand has 6 states, 6 states have (on average 167.83333333333334) internal successors, (1007), 6 states have internal predecessors, (1007), 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 11:26:05,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:05,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 273 [2022-11-20 11:26:05,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:07,640 INFO L130 PetriNetUnfolder]: 1622/5396 cut-off events. [2022-11-20 11:26:07,640 INFO L131 PetriNetUnfolder]: For 3832/4019 co-relation queries the response was YES. [2022-11-20 11:26:07,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12509 conditions, 5396 events. 1622/5396 cut-off events. For 3832/4019 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 40651 event pairs, 523 based on Foata normal form. 0/5024 useless extension candidates. Maximal degree in co-relation 12483. Up to 2869 conditions per place. [2022-11-20 11:26:07,692 INFO L137 encePairwiseOnDemand]: 251/273 looper letters, 375 selfloop transitions, 129 changer transitions 5/694 dead transitions. [2022-11-20 11:26:07,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 694 transitions, 4544 flow [2022-11-20 11:26:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:26:07,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:26:07,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1195 transitions. [2022-11-20 11:26:07,697 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7295482295482295 [2022-11-20 11:26:07,697 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1195 transitions. [2022-11-20 11:26:07,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1195 transitions. [2022-11-20 11:26:07,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:07,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1195 transitions. [2022-11-20 11:26:07,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.16666666666666) internal successors, (1195), 6 states have internal predecessors, (1195), 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 11:26:07,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 11:26:07,706 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 11:26:07,706 INFO L175 Difference]: Start difference. First operand has 328 places, 486 transitions, 2488 flow. Second operand 6 states and 1195 transitions. [2022-11-20 11:26:07,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 694 transitions, 4544 flow [2022-11-20 11:26:07,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 694 transitions, 4544 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:26:07,737 INFO L231 Difference]: Finished difference. Result has 338 places, 613 transitions, 3954 flow [2022-11-20 11:26:07,739 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=2488, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3954, PETRI_PLACES=338, PETRI_TRANSITIONS=613} [2022-11-20 11:26:07,740 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 66 predicate places. [2022-11-20 11:26:07,740 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 613 transitions, 3954 flow [2022-11-20 11:26:07,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 167.83333333333334) internal successors, (1007), 6 states have internal predecessors, (1007), 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 11:26:07,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:07,741 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:07,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:26:07,742 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:26:07,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:07,742 INFO L85 PathProgramCache]: Analyzing trace with hash 626466260, now seen corresponding path program 1 times [2022-11-20 11:26:07,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:07,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230101912] [2022-11-20 11:26:07,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:07,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 11:26:08,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:08,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230101912] [2022-11-20 11:26:08,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230101912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:08,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:08,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:26:08,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816103760] [2022-11-20 11:26:08,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:08,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:26:08,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:08,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:26:08,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:26:08,802 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 273 [2022-11-20 11:26:08,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 613 transitions, 3954 flow. Second operand has 6 states, 6 states have (on average 163.16666666666666) internal successors, (979), 6 states have internal predecessors, (979), 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 11:26:08,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:08,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 273 [2022-11-20 11:26:08,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:10,850 INFO L130 PetriNetUnfolder]: 1747/5569 cut-off events. [2022-11-20 11:26:10,850 INFO L131 PetriNetUnfolder]: For 5722/5750 co-relation queries the response was YES. [2022-11-20 11:26:10,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14906 conditions, 5569 events. 1747/5569 cut-off events. For 5722/5750 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 40955 event pairs, 657 based on Foata normal form. 0/5265 useless extension candidates. Maximal degree in co-relation 14875. Up to 3519 conditions per place. [2022-11-20 11:26:10,915 INFO L137 encePairwiseOnDemand]: 254/273 looper letters, 445 selfloop transitions, 84 changer transitions 0/711 dead transitions. [2022-11-20 11:26:10,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 711 transitions, 5526 flow [2022-11-20 11:26:10,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:26:10,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:26:10,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1109 transitions. [2022-11-20 11:26:10,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6770451770451771 [2022-11-20 11:26:10,919 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1109 transitions. [2022-11-20 11:26:10,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1109 transitions. [2022-11-20 11:26:10,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:10,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1109 transitions. [2022-11-20 11:26:10,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 184.83333333333334) internal successors, (1109), 6 states have internal predecessors, (1109), 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 11:26:10,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 11:26:10,927 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 11:26:10,928 INFO L175 Difference]: Start difference. First operand has 338 places, 613 transitions, 3954 flow. Second operand 6 states and 1109 transitions. [2022-11-20 11:26:10,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 711 transitions, 5526 flow [2022-11-20 11:26:10,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 711 transitions, 5272 flow, removed 127 selfloop flow, removed 0 redundant places. [2022-11-20 11:26:10,973 INFO L231 Difference]: Finished difference. Result has 347 places, 684 transitions, 4490 flow [2022-11-20 11:26:10,974 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=3706, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4490, PETRI_PLACES=347, PETRI_TRANSITIONS=684} [2022-11-20 11:26:10,975 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 75 predicate places. [2022-11-20 11:26:10,975 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 684 transitions, 4490 flow [2022-11-20 11:26:10,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.16666666666666) internal successors, (979), 6 states have internal predecessors, (979), 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 11:26:10,976 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:10,976 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:10,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:26:10,977 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:26:10,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:10,977 INFO L85 PathProgramCache]: Analyzing trace with hash 179601006, now seen corresponding path program 1 times [2022-11-20 11:26:10,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:10,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847071642] [2022-11-20 11:26:10,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:10,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 11:26:13,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:13,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847071642] [2022-11-20 11:26:13,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847071642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:13,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:13,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:26:13,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075870025] [2022-11-20 11:26:13,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:13,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:26:13,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:13,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:26:13,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:26:13,814 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 273 [2022-11-20 11:26:13,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 684 transitions, 4490 flow. Second operand has 21 states, 21 states have (on average 110.57142857142857) internal successors, (2322), 21 states have internal predecessors, (2322), 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 11:26:13,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:13,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 273 [2022-11-20 11:26:13,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:21,125 INFO L130 PetriNetUnfolder]: 2720/7443 cut-off events. [2022-11-20 11:26:21,126 INFO L131 PetriNetUnfolder]: For 9126/9139 co-relation queries the response was YES. [2022-11-20 11:26:21,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22417 conditions, 7443 events. 2720/7443 cut-off events. For 9126/9139 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 55896 event pairs, 426 based on Foata normal form. 44/7157 useless extension candidates. Maximal degree in co-relation 22381. Up to 2937 conditions per place. [2022-11-20 11:26:21,226 INFO L137 encePairwiseOnDemand]: 233/273 looper letters, 788 selfloop transitions, 209 changer transitions 16/1148 dead transitions. [2022-11-20 11:26:21,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 1148 transitions, 9058 flow [2022-11-20 11:26:21,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-20 11:26:21,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-20 11:26:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 5109 transitions. [2022-11-20 11:26:21,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43521594684385384 [2022-11-20 11:26:21,239 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 5109 transitions. [2022-11-20 11:26:21,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 5109 transitions. [2022-11-20 11:26:21,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:21,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 5109 transitions. [2022-11-20 11:26:21,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 118.81395348837209) internal successors, (5109), 43 states have internal predecessors, (5109), 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 11:26:21,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 273.0) internal successors, (12012), 44 states have internal predecessors, (12012), 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 11:26:21,277 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 273.0) internal successors, (12012), 44 states have internal predecessors, (12012), 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 11:26:21,278 INFO L175 Difference]: Start difference. First operand has 347 places, 684 transitions, 4490 flow. Second operand 43 states and 5109 transitions. [2022-11-20 11:26:21,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 1148 transitions, 9058 flow [2022-11-20 11:26:21,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 1148 transitions, 8986 flow, removed 36 selfloop flow, removed 0 redundant places. [2022-11-20 11:26:21,386 INFO L231 Difference]: Finished difference. Result has 398 places, 757 transitions, 5652 flow [2022-11-20 11:26:21,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=4436, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=5652, PETRI_PLACES=398, PETRI_TRANSITIONS=757} [2022-11-20 11:26:21,387 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 126 predicate places. [2022-11-20 11:26:21,388 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 757 transitions, 5652 flow [2022-11-20 11:26:21,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 110.57142857142857) internal successors, (2322), 21 states have internal predecessors, (2322), 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 11:26:21,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:21,389 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:21,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:26:21,390 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:26:21,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:21,390 INFO L85 PathProgramCache]: Analyzing trace with hash -199762916, now seen corresponding path program 2 times [2022-11-20 11:26:21,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:21,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432158212] [2022-11-20 11:26:21,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:21,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:24,315 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 11:26:24,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:24,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432158212] [2022-11-20 11:26:24,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432158212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:24,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:24,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:26:24,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990188296] [2022-11-20 11:26:24,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:24,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:26:24,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:24,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:26:24,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:26:24,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 273 [2022-11-20 11:26:24,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 757 transitions, 5652 flow. Second operand has 21 states, 21 states have (on average 110.57142857142857) internal successors, (2322), 21 states have internal predecessors, (2322), 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 11:26:24,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:24,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 273 [2022-11-20 11:26:24,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:31,751 INFO L130 PetriNetUnfolder]: 4130/11398 cut-off events. [2022-11-20 11:26:31,751 INFO L131 PetriNetUnfolder]: For 19334/19360 co-relation queries the response was YES. [2022-11-20 11:26:31,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36179 conditions, 11398 events. 4130/11398 cut-off events. For 19334/19360 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 96861 event pairs, 1041 based on Foata normal form. 46/10963 useless extension candidates. Maximal degree in co-relation 36133. Up to 3527 conditions per place. [2022-11-20 11:26:31,864 INFO L137 encePairwiseOnDemand]: 222/273 looper letters, 1032 selfloop transitions, 327 changer transitions 16/1510 dead transitions. [2022-11-20 11:26:31,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 1510 transitions, 13065 flow [2022-11-20 11:26:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:26:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 11:26:31,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4726 transitions. [2022-11-20 11:26:31,875 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45556198187777136 [2022-11-20 11:26:31,875 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4726 transitions. [2022-11-20 11:26:31,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4726 transitions. [2022-11-20 11:26:31,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:31,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4726 transitions. [2022-11-20 11:26:31,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 124.36842105263158) internal successors, (4726), 38 states have internal predecessors, (4726), 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 11:26:31,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 273.0) internal successors, (10647), 39 states have internal predecessors, (10647), 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 11:26:31,912 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 273.0) internal successors, (10647), 39 states have internal predecessors, (10647), 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 11:26:31,912 INFO L175 Difference]: Start difference. First operand has 398 places, 757 transitions, 5652 flow. Second operand 38 states and 4726 transitions. [2022-11-20 11:26:31,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 1510 transitions, 13065 flow [2022-11-20 11:26:32,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 1510 transitions, 12953 flow, removed 5 selfloop flow, removed 21 redundant places. [2022-11-20 11:26:32,089 INFO L231 Difference]: Finished difference. Result has 427 places, 891 transitions, 8297 flow [2022-11-20 11:26:32,091 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5576, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8297, PETRI_PLACES=427, PETRI_TRANSITIONS=891} [2022-11-20 11:26:32,091 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 155 predicate places. [2022-11-20 11:26:32,092 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 891 transitions, 8297 flow [2022-11-20 11:26:32,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 110.57142857142857) internal successors, (2322), 21 states have internal predecessors, (2322), 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 11:26:32,093 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:32,093 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:32,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:26:32,094 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:26:32,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:32,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1134777100, now seen corresponding path program 3 times [2022-11-20 11:26:32,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:32,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212166781] [2022-11-20 11:26:32,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:32,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:35,995 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 11:26:35,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:35,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212166781] [2022-11-20 11:26:35,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212166781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:35,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:35,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:26:35,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139238125] [2022-11-20 11:26:35,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:35,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:26:35,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:35,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:26:35,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:26:36,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2022-11-20 11:26:36,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 891 transitions, 8297 flow. Second operand has 20 states, 20 states have (on average 112.9) internal successors, (2258), 20 states have internal predecessors, (2258), 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 11:26:36,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:36,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2022-11-20 11:26:36,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:26:45,670 INFO L130 PetriNetUnfolder]: 5251/14971 cut-off events. [2022-11-20 11:26:45,670 INFO L131 PetriNetUnfolder]: For 34916/35142 co-relation queries the response was YES. [2022-11-20 11:26:45,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50089 conditions, 14971 events. 5251/14971 cut-off events. For 34916/35142 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 139353 event pairs, 1065 based on Foata normal form. 142/14477 useless extension candidates. Maximal degree in co-relation 50030. Up to 4401 conditions per place. [2022-11-20 11:26:45,825 INFO L137 encePairwiseOnDemand]: 226/273 looper letters, 1156 selfloop transitions, 407 changer transitions 12/1712 dead transitions. [2022-11-20 11:26:45,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1712 transitions, 17728 flow [2022-11-20 11:26:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:26:45,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:26:45,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 4565 transitions. [2022-11-20 11:26:45,836 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4644892144892145 [2022-11-20 11:26:45,836 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 4565 transitions. [2022-11-20 11:26:45,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 4565 transitions. [2022-11-20 11:26:45,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:26:45,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 4565 transitions. [2022-11-20 11:26:45,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 126.80555555555556) internal successors, (4565), 36 states have internal predecessors, (4565), 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 11:26:45,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 273.0) internal successors, (10101), 37 states have internal predecessors, (10101), 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 11:26:45,863 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 273.0) internal successors, (10101), 37 states have internal predecessors, (10101), 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 11:26:45,863 INFO L175 Difference]: Start difference. First operand has 427 places, 891 transitions, 8297 flow. Second operand 36 states and 4565 transitions. [2022-11-20 11:26:45,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1712 transitions, 17728 flow [2022-11-20 11:26:46,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 1712 transitions, 17549 flow, removed 0 selfloop flow, removed 23 redundant places. [2022-11-20 11:26:46,189 INFO L231 Difference]: Finished difference. Result has 459 places, 1078 transitions, 12137 flow [2022-11-20 11:26:46,191 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=8154, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=891, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=12137, PETRI_PLACES=459, PETRI_TRANSITIONS=1078} [2022-11-20 11:26:46,191 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 187 predicate places. [2022-11-20 11:26:46,191 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 1078 transitions, 12137 flow [2022-11-20 11:26:46,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 112.9) internal successors, (2258), 20 states have internal predecessors, (2258), 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 11:26:46,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:46,193 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:46,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:26:46,193 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:26:46,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:46,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1983941384, now seen corresponding path program 4 times [2022-11-20 11:26:46,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:46,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049349306] [2022-11-20 11:26:46,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:46,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 11:26:49,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:49,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049349306] [2022-11-20 11:26:49,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049349306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:49,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:49,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:26:49,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445998184] [2022-11-20 11:26:49,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:49,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:26:49,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:49,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:26:49,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:26:49,841 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2022-11-20 11:26:49,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 1078 transitions, 12137 flow. Second operand has 20 states, 20 states have (on average 112.9) internal successors, (2258), 20 states have internal predecessors, (2258), 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 11:26:49,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:49,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2022-11-20 11:26:49,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:03,035 INFO L130 PetriNetUnfolder]: 8224/23531 cut-off events. [2022-11-20 11:27:03,036 INFO L131 PetriNetUnfolder]: For 67832/68173 co-relation queries the response was YES. [2022-11-20 11:27:03,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80971 conditions, 23531 events. 8224/23531 cut-off events. For 67832/68173 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 243939 event pairs, 2142 based on Foata normal form. 265/22816 useless extension candidates. Maximal degree in co-relation 80892. Up to 7170 conditions per place. [2022-11-20 11:27:03,301 INFO L137 encePairwiseOnDemand]: 227/273 looper letters, 1071 selfloop transitions, 567 changer transitions 10/1785 dead transitions. [2022-11-20 11:27:03,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 1785 transitions, 21982 flow [2022-11-20 11:27:03,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:27:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 11:27:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3882 transitions. [2022-11-20 11:27:03,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4587025877348458 [2022-11-20 11:27:03,316 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3882 transitions. [2022-11-20 11:27:03,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3882 transitions. [2022-11-20 11:27:03,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:03,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3882 transitions. [2022-11-20 11:27:03,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 125.2258064516129) internal successors, (3882), 31 states have internal predecessors, (3882), 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 11:27:03,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 273.0) internal successors, (8736), 32 states have internal predecessors, (8736), 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 11:27:03,346 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 273.0) internal successors, (8736), 32 states have internal predecessors, (8736), 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 11:27:03,346 INFO L175 Difference]: Start difference. First operand has 459 places, 1078 transitions, 12137 flow. Second operand 31 states and 3882 transitions. [2022-11-20 11:27:03,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 1785 transitions, 21982 flow [2022-11-20 11:27:03,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 1785 transitions, 21703 flow, removed 103 selfloop flow, removed 13 redundant places. [2022-11-20 11:27:03,834 INFO L231 Difference]: Finished difference. Result has 488 places, 1296 transitions, 17811 flow [2022-11-20 11:27:03,835 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=11900, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1078, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=349, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=17811, PETRI_PLACES=488, PETRI_TRANSITIONS=1296} [2022-11-20 11:27:03,836 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 216 predicate places. [2022-11-20 11:27:03,836 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 1296 transitions, 17811 flow [2022-11-20 11:27:03,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 112.9) internal successors, (2258), 20 states have internal predecessors, (2258), 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 11:27:03,837 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:03,837 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:27:03,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:27:03,837 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:27:03,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:03,838 INFO L85 PathProgramCache]: Analyzing trace with hash 79010752, now seen corresponding path program 5 times [2022-11-20 11:27:03,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:03,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096957494] [2022-11-20 11:27:03,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:03,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 11:27:07,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:07,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096957494] [2022-11-20 11:27:07,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096957494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:07,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:07,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:27:07,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183678366] [2022-11-20 11:27:07,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:07,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:27:07,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:07,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:27:07,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:27:07,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 273 [2022-11-20 11:27:07,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 1296 transitions, 17811 flow. Second operand has 20 states, 20 states have (on average 112.9) internal successors, (2258), 20 states have internal predecessors, (2258), 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 11:27:07,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:07,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 273 [2022-11-20 11:27:07,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:26,639 INFO L130 PetriNetUnfolder]: 10394/29670 cut-off events. [2022-11-20 11:27:26,639 INFO L131 PetriNetUnfolder]: For 109487/110147 co-relation queries the response was YES. [2022-11-20 11:27:26,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106601 conditions, 29670 events. 10394/29670 cut-off events. For 109487/110147 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 321701 event pairs, 2846 based on Foata normal form. 535/28976 useless extension candidates. Maximal degree in co-relation 106510. Up to 8340 conditions per place. [2022-11-20 11:27:27,141 INFO L137 encePairwiseOnDemand]: 224/273 looper letters, 1228 selfloop transitions, 690 changer transitions 16/2071 dead transitions. [2022-11-20 11:27:27,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 2071 transitions, 28358 flow [2022-11-20 11:27:27,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:27:27,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:27:27,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 4583 transitions. [2022-11-20 11:27:27,153 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4663207163207163 [2022-11-20 11:27:27,154 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 4583 transitions. [2022-11-20 11:27:27,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 4583 transitions. [2022-11-20 11:27:27,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:27,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 4583 transitions. [2022-11-20 11:27:27,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 127.30555555555556) internal successors, (4583), 36 states have internal predecessors, (4583), 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 11:27:27,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 273.0) internal successors, (10101), 37 states have internal predecessors, (10101), 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 11:27:27,186 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 273.0) internal successors, (10101), 37 states have internal predecessors, (10101), 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 11:27:27,186 INFO L175 Difference]: Start difference. First operand has 488 places, 1296 transitions, 17811 flow. Second operand 36 states and 4583 transitions. [2022-11-20 11:27:27,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 2071 transitions, 28358 flow [2022-11-20 11:27:28,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 2071 transitions, 28118 flow, removed 75 selfloop flow, removed 12 redundant places. [2022-11-20 11:27:28,630 INFO L231 Difference]: Finished difference. Result has 528 places, 1475 transitions, 23802 flow [2022-11-20 11:27:28,632 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=17589, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=512, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=23802, PETRI_PLACES=528, PETRI_TRANSITIONS=1475} [2022-11-20 11:27:28,632 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 256 predicate places. [2022-11-20 11:27:28,632 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 1475 transitions, 23802 flow [2022-11-20 11:27:28,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 112.9) internal successors, (2258), 20 states have internal predecessors, (2258), 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 11:27:28,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:28,633 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:27:28,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:27:28,634 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-20 11:27:28,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:28,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1173504330, now seen corresponding path program 6 times [2022-11-20 11:27:28,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:28,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156055125] [2022-11-20 11:27:28,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:28,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-20 11:27:31,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:31,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156055125] [2022-11-20 11:27:31,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156055125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:31,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:31,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:27:31,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706827676] [2022-11-20 11:27:31,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:31,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:27:31,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:31,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:27:31,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:27:31,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 273 [2022-11-20 11:27:31,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 1475 transitions, 23802 flow. Second operand has 21 states, 21 states have (on average 110.57142857142857) internal successors, (2322), 21 states have internal predecessors, (2322), 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 11:27:31,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:31,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 273 [2022-11-20 11:27:31,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand