./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 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_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8 --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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- 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-2329fc7 [2022-12-13 15:26:32,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:26:32,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:26:32,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:26:32,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:26:32,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:26:32,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:26:32,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:26:32,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:26:32,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:26:32,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:26:32,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:26:32,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:26:32,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:26:32,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:26:32,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:26:32,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:26:32,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:26:32,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:26:32,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:26:32,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:26:32,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:26:32,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:26:32,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:26:32,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:26:32,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:26:32,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:26:32,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:26:32,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:26:32,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:26:32,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:26:32,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:26:32,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:26:32,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:26:32,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:26:32,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:26:32,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:26:32,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:26:32,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:26:32,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:26:32,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:26:32,637 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 15:26:32,652 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:26:32,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:26:32,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:26:32,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:26:32,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:26:32,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:26:32,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:26:32,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:26:32,654 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:26:32,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:26:32,655 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:26:32,655 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:26:32,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:26:32,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:26:32,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:26:32,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:26:32,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:26:32,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:26:32,656 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 15:26:32,656 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:26:32,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:26:32,657 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:26:32,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:26:32,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:26:32,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:26:32,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:26:32,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:26:32,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:26:32,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:26:32,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:26:32,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:26:32,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:26:32,658 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:26:32,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:26:32,659 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:26:32,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:26:32,659 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:26:32,659 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2022-12-13 15:26:32,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:26:32,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:26:32,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:26:32,856 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:26:32,856 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:26:32,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2022-12-13 15:26:35,617 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:26:35,816 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:26:35,816 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2022-12-13 15:26:35,836 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/data/1006df580/8ff6da2867a243f08f0e3bc12df4aed0/FLAGb84e8bdef [2022-12-13 15:26:35,850 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/data/1006df580/8ff6da2867a243f08f0e3bc12df4aed0 [2022-12-13 15:26:35,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:26:35,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:26:35,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:26:35,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:26:35,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:26:35,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:26:35" (1/1) ... [2022-12-13 15:26:35,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29927f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:26:35, skipping insertion in model container [2022-12-13 15:26:35,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:26:35" (1/1) ... [2022-12-13 15:26:35,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:26:35,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:26:36,293 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2022-12-13 15:26:36,308 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 15:26:36,309 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 15:26:36,310 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 15:26:36,311 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 15:26:36,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:26:36,347 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:26:36,379 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2022-12-13 15:26:36,384 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 15:26:36,384 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 15:26:36,385 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 15:26:36,386 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 15:26:36,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:26:36,449 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:26:36,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:26:36 WrapperNode [2022-12-13 15:26:36,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:26:36,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:26:36,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:26:36,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:26:36,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:26:36" (1/1) ... [2022-12-13 15:26:36,469 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:26:36" (1/1) ... [2022-12-13 15:26:36,491 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 294 [2022-12-13 15:26:36,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:26:36,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:26:36,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:26:36,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:26:36,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:26:36" (1/1) ... [2022-12-13 15:26:36,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:26:36" (1/1) ... [2022-12-13 15:26:36,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:26:36" (1/1) ... [2022-12-13 15:26:36,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:26:36" (1/1) ... [2022-12-13 15:26:36,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:26:36" (1/1) ... [2022-12-13 15:26:36,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:26:36" (1/1) ... [2022-12-13 15:26:36,532 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:26:36" (1/1) ... [2022-12-13 15:26:36,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:26:36" (1/1) ... [2022-12-13 15:26:36,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:26:36,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:26:36,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:26:36,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:26:36,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:26:36" (1/1) ... [2022-12-13 15:26:36,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:26:36,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:26:36,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:26:36,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:26:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:26:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 15:26:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:26:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:26:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:26:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 15:26:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 15:26:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:26:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 15:26:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 15:26:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 15:26:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:26:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:26:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:26:36,595 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 15:26:36,708 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:26:36,710 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:26:37,132 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:26:37,140 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:26:37,140 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-12-13 15:26:37,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:26:37 BoogieIcfgContainer [2022-12-13 15:26:37,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:26:37,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:26:37,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:26:37,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:26:37,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:26:35" (1/3) ... [2022-12-13 15:26:37,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a667407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:26:37, skipping insertion in model container [2022-12-13 15:26:37,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:26:36" (2/3) ... [2022-12-13 15:26:37,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a667407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:26:37, skipping insertion in model container [2022-12-13 15:26:37,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:26:37" (3/3) ... [2022-12-13 15:26:37,149 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2022-12-13 15:26:37,155 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:26:37,163 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:26:37,163 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-12-13 15:26:37,163 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:26:37,252 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 15:26:37,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 327 transitions, 662 flow [2022-12-13 15:26:37,374 INFO L130 PetriNetUnfolder]: 26/350 cut-off events. [2022-12-13 15:26:37,374 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-12-13 15:26:37,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 350 events. 26/350 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 830 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 181. Up to 4 conditions per place. [2022-12-13 15:26:37,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 327 transitions, 662 flow [2022-12-13 15:26:37,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 306 places, 327 transitions, 662 flow [2022-12-13 15:26:37,391 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:26:37,401 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 306 places, 327 transitions, 662 flow [2022-12-13 15:26:37,404 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 306 places, 327 transitions, 662 flow [2022-12-13 15:26:37,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 327 transitions, 662 flow [2022-12-13 15:26:37,451 INFO L130 PetriNetUnfolder]: 26/350 cut-off events. [2022-12-13 15:26:37,451 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-12-13 15:26:37,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 350 events. 26/350 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 830 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 181. Up to 4 conditions per place. [2022-12-13 15:26:37,456 INFO L119 LiptonReduction]: Number of co-enabled transitions 7772 [2022-12-13 15:27:39,439 WARN L233 SmtUtils]: Spent 21.24s on a formula simplification that was a NOOP. DAG size: 163 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:27:56,348 WARN L233 SmtUtils]: Spent 16.91s on a formula simplification that was a NOOP. DAG size: 155 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:28:14,593 WARN L233 SmtUtils]: Spent 18.24s on a formula simplification that was a NOOP. DAG size: 163 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:28:30,250 WARN L233 SmtUtils]: Spent 15.65s on a formula simplification that was a NOOP. DAG size: 155 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:29:09,498 WARN L233 SmtUtils]: Spent 39.24s on a formula simplification that was a NOOP. DAG size: 210 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:29:36,535 WARN L233 SmtUtils]: Spent 27.03s on a formula simplification that was a NOOP. DAG size: 206 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:30:33,104 WARN L233 SmtUtils]: Spent 56.57s on a formula simplification that was a NOOP. DAG size: 210 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:31:24,907 WARN L233 SmtUtils]: Spent 51.80s on a formula simplification that was a NOOP. DAG size: 206 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:33:50,264 WARN L233 SmtUtils]: Spent 2.42m on a formula simplification that was a NOOP. DAG size: 266 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:36:07,224 WARN L233 SmtUtils]: Spent 2.28m on a formula simplification that was a NOOP. DAG size: 252 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:38:42,923 WARN L233 SmtUtils]: Spent 2.59m on a formula simplification that was a NOOP. DAG size: 266 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:40:53,860 WARN L233 SmtUtils]: Spent 2.18m on a formula simplification that was a NOOP. DAG size: 252 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 15:40:53,870 INFO L134 LiptonReduction]: Checked pairs total: 29906 [2022-12-13 15:40:53,870 INFO L136 LiptonReduction]: Total number of compositions: 300 [2022-12-13 15:40:53,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:40:53,888 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;@e49311f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:40:53,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-12-13 15:40:53,890 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2022-12-13 15:40:53,890 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:40:53,890 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:40:53,890 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 15:40:53,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-12-13 15:40:53,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:40:53,894 INFO L85 PathProgramCache]: Analyzing trace with hash 38817, now seen corresponding path program 1 times [2022-12-13 15:40:53,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:40:53,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951277111] [2022-12-13 15:40:53,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:40:53,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:40:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:40:54,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:40:54,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:40:54,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951277111] [2022-12-13 15:40:54,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951277111] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:40:54,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:40:54,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:40:54,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779982365] [2022-12-13 15:40:54,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:40:54,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:40:54,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:40:54,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:40:54,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:40:54,050 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 627 [2022-12-13 15:40:54,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 97 transitions, 202 flow. Second operand has 2 states, 2 states have (on average 307.0) internal successors, (614), 2 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:40:54,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:40:54,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 627 [2022-12-13 15:40:54,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:40:55,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:40:55,785 INFO L130 PetriNetUnfolder]: 106/457 cut-off events. [2022-12-13 15:40:55,785 INFO L131 PetriNetUnfolder]: For 3/6 co-relation queries the response was YES. [2022-12-13 15:40:55,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 457 events. 106/457 cut-off events. For 3/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2088 event pairs, 85 based on Foata normal form. 30/433 useless extension candidates. Maximal degree in co-relation 642. Up to 217 conditions per place. [2022-12-13 15:40:55,789 INFO L137 encePairwiseOnDemand]: 607/627 looper letters, 32 selfloop transitions, 0 changer transitions 0/77 dead transitions. [2022-12-13 15:40:55,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 77 transitions, 226 flow [2022-12-13 15:40:55,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:40:55,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:40:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 664 transitions. [2022-12-13 15:40:55,803 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.529505582137161 [2022-12-13 15:40:55,803 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 664 transitions. [2022-12-13 15:40:55,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 664 transitions. [2022-12-13 15:40:55,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:40:55,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 664 transitions. [2022-12-13 15:40:55,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 332.0) internal successors, (664), 2 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:40:55,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 627.0) internal successors, (1881), 3 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:40:55,820 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 627.0) internal successors, (1881), 3 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:40:55,822 INFO L175 Difference]: Start difference. First operand has 84 places, 97 transitions, 202 flow. Second operand 2 states and 664 transitions. [2022-12-13 15:40:55,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 77 transitions, 226 flow [2022-12-13 15:40:55,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 226 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:40:55,827 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 162 flow [2022-12-13 15:40:55,829 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=162, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2022-12-13 15:40:55,833 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, -9 predicate places. [2022-12-13 15:40:55,833 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 162 flow [2022-12-13 15:40:55,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 307.0) internal successors, (614), 2 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:40:55,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:40:55,834 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-13 15:40:55,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:40:55,834 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-12-13 15:40:55,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:40:55,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1740575743, now seen corresponding path program 1 times [2022-12-13 15:40:55,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:40:55,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312082111] [2022-12-13 15:40:55,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:40:55,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:40:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:40:55,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:40:55,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:40:55,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312082111] [2022-12-13 15:40:55,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312082111] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:40:55,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:40:55,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:40:55,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876009025] [2022-12-13 15:40:55,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:40:55,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:40:55,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:40:55,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:40:55,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:40:55,954 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 627 [2022-12-13 15:40:55,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 303.6666666666667) internal successors, (911), 3 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:40:55,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:40:55,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 627 [2022-12-13 15:40:55,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:40:57,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:40:58,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:40:59,067 INFO L130 PetriNetUnfolder]: 107/460 cut-off events. [2022-12-13 15:40:59,067 INFO L131 PetriNetUnfolder]: For 3/6 co-relation queries the response was YES. [2022-12-13 15:40:59,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 460 events. 107/460 cut-off events. For 3/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2079 event pairs, 85 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 683. Up to 217 conditions per place. [2022-12-13 15:40:59,070 INFO L137 encePairwiseOnDemand]: 624/627 looper letters, 33 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2022-12-13 15:40:59,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 80 transitions, 238 flow [2022-12-13 15:40:59,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:40:59,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:40:59,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 942 transitions. [2022-12-13 15:40:59,074 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5007974481658692 [2022-12-13 15:40:59,074 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 942 transitions. [2022-12-13 15:40:59,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 942 transitions. [2022-12-13 15:40:59,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:40:59,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 942 transitions. [2022-12-13 15:40:59,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 314.0) internal successors, (942), 3 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:40:59,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:40:59,082 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:40:59,082 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 162 flow. Second operand 3 states and 942 transitions. [2022-12-13 15:40:59,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 80 transitions, 238 flow [2022-12-13 15:40:59,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:40:59,085 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 174 flow [2022-12-13 15:40:59,085 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2022-12-13 15:40:59,086 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, -6 predicate places. [2022-12-13 15:40:59,086 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 174 flow [2022-12-13 15:40:59,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 303.6666666666667) internal successors, (911), 3 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:40:59,087 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:40:59,087 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:40:59,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:40:59,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-12-13 15:40:59,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:40:59,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1212285500, now seen corresponding path program 1 times [2022-12-13 15:40:59,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:40:59,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676698568] [2022-12-13 15:40:59,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:40:59,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:40:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:40:59,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:40:59,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:40:59,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676698568] [2022-12-13 15:40:59,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676698568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:40:59,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:40:59,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:40:59,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460745887] [2022-12-13 15:40:59,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:40:59,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:40:59,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:40:59,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:40:59,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:40:59,185 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 627 [2022-12-13 15:40:59,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:40:59,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:40:59,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 627 [2022-12-13 15:40:59,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:41:01,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:01,340 INFO L130 PetriNetUnfolder]: 107/462 cut-off events. [2022-12-13 15:41:01,341 INFO L131 PetriNetUnfolder]: For 3/6 co-relation queries the response was YES. [2022-12-13 15:41:01,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 462 events. 107/462 cut-off events. For 3/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2082 event pairs, 85 based on Foata normal form. 2/412 useless extension candidates. Maximal degree in co-relation 692. Up to 220 conditions per place. [2022-12-13 15:41:01,343 INFO L137 encePairwiseOnDemand]: 624/627 looper letters, 32 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2022-12-13 15:41:01,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 244 flow [2022-12-13 15:41:01,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:41:01,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:41:01,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 940 transitions. [2022-12-13 15:41:01,346 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49973418394471025 [2022-12-13 15:41:01,346 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 940 transitions. [2022-12-13 15:41:01,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 940 transitions. [2022-12-13 15:41:01,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:41:01,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 940 transitions. [2022-12-13 15:41:01,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:01,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:01,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:01,354 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 174 flow. Second operand 3 states and 940 transitions. [2022-12-13 15:41:01,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 244 flow [2022-12-13 15:41:01,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 79 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:41:01,356 INFO L231 Difference]: Finished difference. Result has 80 places, 79 transitions, 186 flow [2022-12-13 15:41:01,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=80, PETRI_TRANSITIONS=79} [2022-12-13 15:41:01,357 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, -4 predicate places. [2022-12-13 15:41:01,357 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 79 transitions, 186 flow [2022-12-13 15:41:01,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:01,358 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:41:01,358 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:41:01,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:41:01,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-12-13 15:41:01,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:41:01,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1731424670, now seen corresponding path program 1 times [2022-12-13 15:41:01,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:41:01,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840552715] [2022-12-13 15:41:01,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:41:01,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:41:01,419 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:41:01,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219578387] [2022-12-13 15:41:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:41:01,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:41:01,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:41:01,421 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:41:01,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:41:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:41:01,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:41:01,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:41:01,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:41:01,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:41:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:41:01,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:41:01,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840552715] [2022-12-13 15:41:01,710 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:41:01,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219578387] [2022-12-13 15:41:01,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219578387] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:41:01,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:41:01,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 15:41:01,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263243751] [2022-12-13 15:41:01,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:41:01,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:41:01,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:41:01,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:41:01,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:41:01,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 627 [2022-12-13 15:41:01,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 302.8333333333333) internal successors, (1817), 6 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:01,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:41:01,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 627 [2022-12-13 15:41:01,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:41:02,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:04,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:06,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:08,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:09,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:11,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:11,152 INFO L130 PetriNetUnfolder]: 107/468 cut-off events. [2022-12-13 15:41:11,152 INFO L131 PetriNetUnfolder]: For 4/7 co-relation queries the response was YES. [2022-12-13 15:41:11,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 468 events. 107/468 cut-off events. For 4/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2098 event pairs, 85 based on Foata normal form. 6/422 useless extension candidates. Maximal degree in co-relation 719. Up to 220 conditions per place. [2022-12-13 15:41:11,153 INFO L137 encePairwiseOnDemand]: 624/627 looper letters, 32 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2022-12-13 15:41:11,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 272 flow [2022-12-13 15:41:11,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:41:11,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:41:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1845 transitions. [2022-12-13 15:41:11,157 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4904306220095694 [2022-12-13 15:41:11,157 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1845 transitions. [2022-12-13 15:41:11,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1845 transitions. [2022-12-13 15:41:11,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:41:11,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1845 transitions. [2022-12-13 15:41:11,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 307.5) internal successors, (1845), 6 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:11,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 627.0) internal successors, (4389), 7 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:11,165 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 627.0) internal successors, (4389), 7 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:11,165 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 186 flow. Second operand 6 states and 1845 transitions. [2022-12-13 15:41:11,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 272 flow [2022-12-13 15:41:11,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 82 transitions, 268 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 15:41:11,167 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 224 flow [2022-12-13 15:41:11,167 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2022-12-13 15:41:11,168 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 3 predicate places. [2022-12-13 15:41:11,168 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 224 flow [2022-12-13 15:41:11,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 302.8333333333333) internal successors, (1817), 6 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:11,169 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:41:11,169 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:41:11,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:41:11,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:41:11,370 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-12-13 15:41:11,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:41:11,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1553390524, now seen corresponding path program 2 times [2022-12-13 15:41:11,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:41:11,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743659325] [2022-12-13 15:41:11,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:41:11,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:41:11,533 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:41:11,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368448887] [2022-12-13 15:41:11,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:41:11,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:41:11,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:41:11,534 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:41:11,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:41:12,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:41:12,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:41:12,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 3941 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 15:41:12,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:41:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:41:12,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:41:12,347 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:41:12,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:41:12,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743659325] [2022-12-13 15:41:12,347 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:41:12,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368448887] [2022-12-13 15:41:12,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368448887] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:41:12,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:41:12,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-13 15:41:12,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223536620] [2022-12-13 15:41:12,348 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:41:12,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:41:12,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:41:12,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:41:12,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:41:12,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 627 [2022-12-13 15:41:12,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 224 flow. Second operand has 12 states, 12 states have (on average 302.4166666666667) internal successors, (3629), 12 states have internal predecessors, (3629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:12,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:41:12,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 627 [2022-12-13 15:41:12,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:41:14,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:16,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:17,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:19,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:21,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:23,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:24,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:25,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:27,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:29,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:31,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:33,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:35,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:37,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:37,779 INFO L130 PetriNetUnfolder]: 107/480 cut-off events. [2022-12-13 15:41:37,779 INFO L131 PetriNetUnfolder]: For 84/87 co-relation queries the response was YES. [2022-12-13 15:41:37,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 480 events. 107/480 cut-off events. For 84/87 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2148 event pairs, 85 based on Foata normal form. 12/440 useless extension candidates. Maximal degree in co-relation 787. Up to 220 conditions per place. [2022-12-13 15:41:37,781 INFO L137 encePairwiseOnDemand]: 624/627 looper letters, 32 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2022-12-13 15:41:37,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 88 transitions, 346 flow [2022-12-13 15:41:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:41:37,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 15:41:37,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3660 transitions. [2022-12-13 15:41:37,785 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4864433811802233 [2022-12-13 15:41:37,785 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3660 transitions. [2022-12-13 15:41:37,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3660 transitions. [2022-12-13 15:41:37,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:41:37,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3660 transitions. [2022-12-13 15:41:37,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 305.0) internal successors, (3660), 12 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:37,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 627.0) internal successors, (8151), 13 states have internal predecessors, (8151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:37,798 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 627.0) internal successors, (8151), 13 states have internal predecessors, (8151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:37,798 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 224 flow. Second operand 12 states and 3660 transitions. [2022-12-13 15:41:37,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 88 transitions, 346 flow [2022-12-13 15:41:37,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 88 transitions, 332 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 15:41:37,800 INFO L231 Difference]: Finished difference. Result has 103 places, 88 transitions, 306 flow [2022-12-13 15:41:37,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=306, PETRI_PLACES=103, PETRI_TRANSITIONS=88} [2022-12-13 15:41:37,801 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 19 predicate places. [2022-12-13 15:41:37,801 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 88 transitions, 306 flow [2022-12-13 15:41:37,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 302.4166666666667) internal successors, (3629), 12 states have internal predecessors, (3629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:37,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:41:37,802 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:41:37,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:41:38,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:41:38,004 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-12-13 15:41:38,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:41:38,005 INFO L85 PathProgramCache]: Analyzing trace with hash 859588100, now seen corresponding path program 3 times [2022-12-13 15:41:38,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:41:38,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295226001] [2022-12-13 15:41:38,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:41:38,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:41:38,289 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:41:38,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1803186547] [2022-12-13 15:41:38,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:41:38,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:41:38,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:41:38,291 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:41:38,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:41:39,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 15:41:39,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:41:39,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:41:39,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:41:39,094 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-13 15:41:39,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:41:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-13 15:41:39,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:41:39,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295226001] [2022-12-13 15:41:39,121 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:41:39,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803186547] [2022-12-13 15:41:39,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803186547] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:41:39,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:41:39,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-12-13 15:41:39,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67261056] [2022-12-13 15:41:39,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:41:39,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:41:39,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:41:39,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:41:39,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:41:39,145 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 627 [2022-12-13 15:41:39,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 88 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 303.1666666666667) internal successors, (1819), 6 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:39,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:41:39,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 627 [2022-12-13 15:41:39,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:41:40,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:42,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:43,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:45,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 15:41:45,578 INFO L130 PetriNetUnfolder]: 109/507 cut-off events. [2022-12-13 15:41:45,579 INFO L131 PetriNetUnfolder]: For 166/169 co-relation queries the response was YES. [2022-12-13 15:41:45,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 507 events. 109/507 cut-off events. For 166/169 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2084 event pairs, 85 based on Foata normal form. 3/458 useless extension candidates. Maximal degree in co-relation 973. Up to 214 conditions per place. [2022-12-13 15:41:45,581 INFO L137 encePairwiseOnDemand]: 623/627 looper letters, 76 selfloop transitions, 6 changer transitions 0/127 dead transitions. [2022-12-13 15:41:45,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 127 transitions, 819 flow [2022-12-13 15:41:45,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:41:45,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:41:45,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1851 transitions. [2022-12-13 15:41:45,584 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4920255183413078 [2022-12-13 15:41:45,584 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1851 transitions. [2022-12-13 15:41:45,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1851 transitions. [2022-12-13 15:41:45,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:41:45,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1851 transitions. [2022-12-13 15:41:45,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 308.5) internal successors, (1851), 6 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:45,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 627.0) internal successors, (4389), 7 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:45,590 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 627.0) internal successors, (4389), 7 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:45,590 INFO L175 Difference]: Start difference. First operand has 103 places, 88 transitions, 306 flow. Second operand 6 states and 1851 transitions. [2022-12-13 15:41:45,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 127 transitions, 819 flow [2022-12-13 15:41:45,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 127 transitions, 625 flow, removed 76 selfloop flow, removed 5 redundant places. [2022-12-13 15:41:45,596 INFO L231 Difference]: Finished difference. Result has 107 places, 91 transitions, 341 flow [2022-12-13 15:41:45,596 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=341, PETRI_PLACES=107, PETRI_TRANSITIONS=91} [2022-12-13 15:41:45,597 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 23 predicate places. [2022-12-13 15:41:45,597 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 91 transitions, 341 flow [2022-12-13 15:41:45,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 303.1666666666667) internal successors, (1819), 6 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:45,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:41:45,598 INFO L209 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2022-12-13 15:41:45,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:41:45,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:41:45,799 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-12-13 15:41:45,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:41:45,800 INFO L85 PathProgramCache]: Analyzing trace with hash -537540339, now seen corresponding path program 4 times [2022-12-13 15:41:45,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:41:45,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920734827] [2022-12-13 15:41:45,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:41:45,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:41:46,825 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:41:46,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863907414] [2022-12-13 15:41:46,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 15:41:46,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:41:46,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:41:46,826 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:41:46,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2195a4-a112-437f-a408-f763fe215793/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:41:54,020 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 15:41:54,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:41:54,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 38057 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 15:41:54,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:41:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2022-12-13 15:41:54,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:41:54,553 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2022-12-13 15:41:54,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:41:54,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920734827] [2022-12-13 15:41:54,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:41:54,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863907414] [2022-12-13 15:41:54,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863907414] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:41:54,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:41:54,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-12-13 15:41:54,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193580223] [2022-12-13 15:41:54,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:41:54,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 15:41:54,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:41:54,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 15:41:54,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-12-13 15:41:54,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 627 [2022-12-13 15:41:54,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 91 transitions, 341 flow. Second operand has 24 states, 24 states have (on average 302.3333333333333) internal successors, (7256), 24 states have internal predecessors, (7256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:41:54,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:41:54,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 627 [2022-12-13 15:41:54,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand