./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b 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_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro --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 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 --- 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-8393723 [2022-11-18 20:33:36,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:33:36,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:33:36,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:33:36,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:33:36,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:33:36,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:33:36,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:33:36,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:33:36,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:33:36,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:33:36,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:33:36,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:33:36,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:33:36,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:33:36,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:33:36,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:33:36,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:33:36,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:33:36,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:33:36,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:33:36,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:33:36,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:33:36,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:33:36,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:33:36,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:33:36,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:33:36,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:33:36,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:33:36,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:33:36,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:33:36,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:33:36,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:33:36,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:33:36,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:33:36,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:33:36,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:33:36,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:33:36,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:33:36,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:33:36,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:33:36,333 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 20:33:36,378 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:33:36,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:33:36,379 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:33:36,379 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:33:36,381 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:33:36,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:33:36,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:33:36,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:33:36,382 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:33:36,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:33:36,384 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:33:36,384 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:33:36,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:33:36,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:33:36,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:33:36,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:33:36,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:33:36,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:33:36,386 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 20:33:36,386 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:33:36,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:33:36,387 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:33:36,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:33:36,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:33:36,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:33:36,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:33:36,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:33:36,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:33:36,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:33:36,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:33:36,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:33:36,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:33:36,391 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:33:36,391 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:33:36,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:33:36,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 [2022-11-18 20:33:36,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:33:36,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:33:36,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:33:36,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:33:36,774 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:33:36,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2022-11-18 20:33:36,856 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/data/e1f0e6888/01bbf387f6c24b298c0727ed4052ef3d/FLAGc156c83d5 [2022-11-18 20:33:37,482 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:33:37,482 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2022-11-18 20:33:37,520 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/data/e1f0e6888/01bbf387f6c24b298c0727ed4052ef3d/FLAGc156c83d5 [2022-11-18 20:33:37,722 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/data/e1f0e6888/01bbf387f6c24b298c0727ed4052ef3d [2022-11-18 20:33:37,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:33:37,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:33:37,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:33:37,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:33:37,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:33:37,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:33:37" (1/1) ... [2022-11-18 20:33:37,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8adad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:37, skipping insertion in model container [2022-11-18 20:33:37,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:33:37" (1/1) ... [2022-11-18 20:33:37,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:33:37,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:33:38,493 WARN L234 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_5ab1298f-aaeb-4625-bb35-94bed3e4d628/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i[41323,41336] [2022-11-18 20:33:38,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:33:38,559 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:33:38,592 WARN L234 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_5ab1298f-aaeb-4625-bb35-94bed3e4d628/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i[41323,41336] [2022-11-18 20:33:38,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:33:38,675 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:33:38,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:38 WrapperNode [2022-11-18 20:33:38,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:33:38,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:33:38,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:33:38,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:33:38,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:38" (1/1) ... [2022-11-18 20:33:38,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:38" (1/1) ... [2022-11-18 20:33:38,763 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 249 [2022-11-18 20:33:38,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:33:38,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:33:38,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:33:38,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:33:38,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:38" (1/1) ... [2022-11-18 20:33:38,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:38" (1/1) ... [2022-11-18 20:33:38,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:38" (1/1) ... [2022-11-18 20:33:38,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:38" (1/1) ... [2022-11-18 20:33:38,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:38" (1/1) ... [2022-11-18 20:33:38,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:38" (1/1) ... [2022-11-18 20:33:38,820 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:38" (1/1) ... [2022-11-18 20:33:38,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:38" (1/1) ... [2022-11-18 20:33:38,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:33:38,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:33:38,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:33:38,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:33:38,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:38" (1/1) ... [2022-11-18 20:33:38,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:33:38,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:38,866 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:38,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:33:38,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:33:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:33:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:33:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:33:38,917 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:33:38,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:33:38,922 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:33:38,922 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:33:38,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:33:38,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:33:38,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:33:38,925 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:33:39,105 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:33:39,108 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:33:39,734 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:33:39,744 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:33:39,745 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-18 20:33:39,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:33:39 BoogieIcfgContainer [2022-11-18 20:33:39,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:33:39,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:33:39,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:33:39,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:33:39,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:33:37" (1/3) ... [2022-11-18 20:33:39,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6a6c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:33:39, skipping insertion in model container [2022-11-18 20:33:39,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:38" (2/3) ... [2022-11-18 20:33:39,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6a6c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:33:39, skipping insertion in model container [2022-11-18 20:33:39,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:33:39" (3/3) ... [2022-11-18 20:33:39,777 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_74-tricky_address1_racefree.i [2022-11-18 20:33:39,789 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:33:39,818 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:33:39,819 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-18 20:33:39,819 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:33:39,995 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:33:40,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 269 transitions, 546 flow [2022-11-18 20:33:40,321 INFO L130 PetriNetUnfolder]: 45/380 cut-off events. [2022-11-18 20:33:40,321 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:33:40,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 380 events. 45/380 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1550 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 219. Up to 8 conditions per place. [2022-11-18 20:33:40,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 269 transitions, 546 flow [2022-11-18 20:33:40,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 269 transitions, 546 flow [2022-11-18 20:33:40,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:33:40,377 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;@5b286356, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:33:40,377 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 20:33:40,402 INFO L130 PetriNetUnfolder]: 11/115 cut-off events. [2022-11-18 20:33:40,403 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:33:40,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:33:40,404 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:40,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-18 20:33:40,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:40,412 INFO L85 PathProgramCache]: Analyzing trace with hash -518286930, now seen corresponding path program 1 times [2022-11-18 20:33:40,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:40,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332412359] [2022-11-18 20:33:40,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:40,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:40,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:40,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332412359] [2022-11-18 20:33:40,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332412359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:40,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:33:40,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:33:40,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423481181] [2022-11-18 20:33:40,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:40,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:33:40,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:40,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:33:40,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:33:40,814 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 269 [2022-11-18 20:33:40,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 269 transitions, 546 flow. Second operand has 2 states, 2 states have (on average 239.5) internal successors, (479), 2 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:40,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:33:40,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 269 [2022-11-18 20:33:40,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:33:40,919 INFO L130 PetriNetUnfolder]: 5/337 cut-off events. [2022-11-18 20:33:40,919 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:33:40,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 337 events. 5/337 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1137 event pairs, 0 based on Foata normal form. 40/347 useless extension candidates. Maximal degree in co-relation 194. Up to 4 conditions per place. [2022-11-18 20:33:40,944 INFO L137 encePairwiseOnDemand]: 242/269 looper letters, 2 selfloop transitions, 0 changer transitions 1/240 dead transitions. [2022-11-18 20:33:40,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 240 transitions, 492 flow [2022-11-18 20:33:40,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:33:40,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:33:40,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 505 transitions. [2022-11-18 20:33:40,965 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9386617100371747 [2022-11-18 20:33:40,967 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 505 transitions. [2022-11-18 20:33:40,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 505 transitions. [2022-11-18 20:33:40,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:33:40,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 505 transitions. [2022-11-18 20:33:40,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 252.5) internal successors, (505), 2 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:40,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:40,998 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:41,001 INFO L175 Difference]: Start difference. First operand has 241 places, 269 transitions, 546 flow. Second operand 2 states and 505 transitions. [2022-11-18 20:33:41,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 240 transitions, 492 flow [2022-11-18 20:33:41,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 240 transitions, 492 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:33:41,014 INFO L231 Difference]: Finished difference. Result has 240 places, 239 transitions, 486 flow [2022-11-18 20:33:41,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=486, PETRI_PLACES=240, PETRI_TRANSITIONS=239} [2022-11-18 20:33:41,024 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, -1 predicate places. [2022-11-18 20:33:41,025 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 239 transitions, 486 flow [2022-11-18 20:33:41,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 239.5) internal successors, (479), 2 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:41,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:33:41,028 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:41,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:33:41,029 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-18 20:33:41,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:41,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1244587829, now seen corresponding path program 1 times [2022-11-18 20:33:41,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:41,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034897352] [2022-11-18 20:33:41,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:41,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:41,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:41,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:41,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034897352] [2022-11-18 20:33:41,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034897352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:41,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:33:41,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:33:41,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117725565] [2022-11-18 20:33:41,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:41,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:33:41,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:41,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:33:41,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:33:41,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 269 [2022-11-18 20:33:41,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 239 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:41,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:33:41,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 269 [2022-11-18 20:33:41,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:33:41,337 INFO L130 PetriNetUnfolder]: 5/340 cut-off events. [2022-11-18 20:33:41,337 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:33:41,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 340 events. 5/340 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1134 event pairs, 0 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 357. Up to 10 conditions per place. [2022-11-18 20:33:41,341 INFO L137 encePairwiseOnDemand]: 266/269 looper letters, 11 selfloop transitions, 2 changer transitions 0/243 dead transitions. [2022-11-18 20:33:41,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 243 transitions, 520 flow [2022-11-18 20:33:41,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:33:41,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:33:41,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 707 transitions. [2022-11-18 20:33:41,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8760842627013631 [2022-11-18 20:33:41,347 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 707 transitions. [2022-11-18 20:33:41,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 707 transitions. [2022-11-18 20:33:41,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:33:41,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 707 transitions. [2022-11-18 20:33:41,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:41,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:41,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:41,358 INFO L175 Difference]: Start difference. First operand has 240 places, 239 transitions, 486 flow. Second operand 3 states and 707 transitions. [2022-11-18 20:33:41,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 243 transitions, 520 flow [2022-11-18 20:33:41,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 243 transitions, 520 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:33:41,372 INFO L231 Difference]: Finished difference. Result has 242 places, 240 transitions, 498 flow [2022-11-18 20:33:41,372 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=498, PETRI_PLACES=242, PETRI_TRANSITIONS=240} [2022-11-18 20:33:41,373 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 1 predicate places. [2022-11-18 20:33:41,374 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 240 transitions, 498 flow [2022-11-18 20:33:41,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:41,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:33:41,376 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:41,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:33:41,379 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-18 20:33:41,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:41,383 INFO L85 PathProgramCache]: Analyzing trace with hash -500602617, now seen corresponding path program 1 times [2022-11-18 20:33:41,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:41,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549415684] [2022-11-18 20:33:41,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:41,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:41,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:41,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549415684] [2022-11-18 20:33:41,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549415684] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:33:41,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180515293] [2022-11-18 20:33:41,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:41,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:41,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:41,604 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:33:41,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:33:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:41,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:33:41,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:33:41,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:33:41,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180515293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:41,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:33:41,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 20:33:41,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213778690] [2022-11-18 20:33:41,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:41,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:33:41,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:41,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:33:41,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:33:41,781 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 269 [2022-11-18 20:33:41,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 240 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:41,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:33:41,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 269 [2022-11-18 20:33:41,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:33:41,851 INFO L130 PetriNetUnfolder]: 3/262 cut-off events. [2022-11-18 20:33:41,851 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:33:41,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 262 events. 3/262 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 563 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 282. Up to 7 conditions per place. [2022-11-18 20:33:41,855 INFO L137 encePairwiseOnDemand]: 266/269 looper letters, 9 selfloop transitions, 2 changer transitions 0/242 dead transitions. [2022-11-18 20:33:41,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 242 transitions, 524 flow [2022-11-18 20:33:41,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:33:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:33:41,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2022-11-18 20:33:41,858 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8736059479553904 [2022-11-18 20:33:41,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2022-11-18 20:33:41,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2022-11-18 20:33:41,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:33:41,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2022-11-18 20:33:41,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:41,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:41,877 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:41,878 INFO L175 Difference]: Start difference. First operand has 242 places, 240 transitions, 498 flow. Second operand 3 states and 705 transitions. [2022-11-18 20:33:41,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 242 transitions, 524 flow [2022-11-18 20:33:41,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 242 transitions, 522 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:33:41,884 INFO L231 Difference]: Finished difference. Result has 244 places, 240 transitions, 504 flow [2022-11-18 20:33:41,884 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=244, PETRI_TRANSITIONS=240} [2022-11-18 20:33:41,888 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 3 predicate places. [2022-11-18 20:33:41,888 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 240 transitions, 504 flow [2022-11-18 20:33:41,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:41,889 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:33:41,890 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:41,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:33:42,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:42,101 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-18 20:33:42,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:42,102 INFO L85 PathProgramCache]: Analyzing trace with hash 583738055, now seen corresponding path program 1 times [2022-11-18 20:33:42,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:42,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511208194] [2022-11-18 20:33:42,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:42,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:33:42,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:42,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511208194] [2022-11-18 20:33:42,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511208194] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:33:42,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213134118] [2022-11-18 20:33:42,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:42,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:42,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:42,272 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:33:42,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:33:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:42,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:33:42,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:42,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:33:42,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:33:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:33:42,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213134118] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:33:42,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:33:42,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:33:42,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084630642] [2022-11-18 20:33:42,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:33:42,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:33:42,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:42,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:33:42,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:33:42,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 269 [2022-11-18 20:33:42,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 240 transitions, 504 flow. Second operand has 10 states, 10 states have (on average 232.1) internal successors, (2321), 10 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:42,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:33:42,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 269 [2022-11-18 20:33:42,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:33:42,679 INFO L130 PetriNetUnfolder]: 3/269 cut-off events. [2022-11-18 20:33:42,680 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-18 20:33:42,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 269 events. 3/269 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 560 event pairs, 0 based on Foata normal form. 2/252 useless extension candidates. Maximal degree in co-relation 303. Up to 7 conditions per place. [2022-11-18 20:33:42,684 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 12 selfloop transitions, 9 changer transitions 0/250 dead transitions. [2022-11-18 20:33:42,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 250 transitions, 568 flow [2022-11-18 20:33:42,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:33:42,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:33:42,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2093 transitions. [2022-11-18 20:33:42,691 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8645187938868236 [2022-11-18 20:33:42,691 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2093 transitions. [2022-11-18 20:33:42,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2093 transitions. [2022-11-18 20:33:42,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:33:42,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2093 transitions. [2022-11-18 20:33:42,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 232.55555555555554) internal successors, (2093), 9 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:42,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 269.0) internal successors, (2690), 10 states have internal predecessors, (2690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:42,708 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 269.0) internal successors, (2690), 10 states have internal predecessors, (2690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:42,709 INFO L175 Difference]: Start difference. First operand has 244 places, 240 transitions, 504 flow. Second operand 9 states and 2093 transitions. [2022-11-18 20:33:42,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 250 transitions, 568 flow [2022-11-18 20:33:42,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 250 transitions, 564 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:33:42,715 INFO L231 Difference]: Finished difference. Result has 253 places, 246 transitions, 550 flow [2022-11-18 20:33:42,716 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=550, PETRI_PLACES=253, PETRI_TRANSITIONS=246} [2022-11-18 20:33:42,717 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 12 predicate places. [2022-11-18 20:33:42,717 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 246 transitions, 550 flow [2022-11-18 20:33:42,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 232.1) internal successors, (2321), 10 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:42,720 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:33:42,720 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:42,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:42,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:42,927 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-18 20:33:42,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:42,928 INFO L85 PathProgramCache]: Analyzing trace with hash 466748935, now seen corresponding path program 2 times [2022-11-18 20:33:42,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:42,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945858230] [2022-11-18 20:33:42,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:42,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:33:43,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:43,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945858230] [2022-11-18 20:33:43,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945858230] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:33:43,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445967626] [2022-11-18 20:33:43,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:33:43,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:43,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:43,121 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:33:43,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:33:43,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:33:43,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:33:43,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:33:43,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:33:43,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:33:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:33:43,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445967626] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:33:43,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:33:43,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 20:33:43,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77705330] [2022-11-18 20:33:43,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:33:43,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:33:43,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:43,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:33:43,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:33:43,528 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 269 [2022-11-18 20:33:43,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 246 transitions, 550 flow. Second operand has 18 states, 18 states have (on average 232.27777777777777) internal successors, (4181), 18 states have internal predecessors, (4181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:43,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:33:43,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 269 [2022-11-18 20:33:43,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:33:43,869 INFO L130 PetriNetUnfolder]: 3/289 cut-off events. [2022-11-18 20:33:43,870 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-18 20:33:43,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 289 events. 3/289 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 560 event pairs, 0 based on Foata normal form. 4/274 useless extension candidates. Maximal degree in co-relation 389. Up to 11 conditions per place. [2022-11-18 20:33:43,874 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 20 selfloop transitions, 21 changer transitions 0/270 dead transitions. [2022-11-18 20:33:43,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 270 transitions, 740 flow [2022-11-18 20:33:43,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:33:43,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:33:43,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4875 transitions. [2022-11-18 20:33:43,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8629845990440786 [2022-11-18 20:33:43,886 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4875 transitions. [2022-11-18 20:33:43,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4875 transitions. [2022-11-18 20:33:43,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:33:43,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4875 transitions. [2022-11-18 20:33:43,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 232.14285714285714) internal successors, (4875), 21 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:43,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 269.0) internal successors, (5918), 22 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:43,918 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 269.0) internal successors, (5918), 22 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:43,919 INFO L175 Difference]: Start difference. First operand has 253 places, 246 transitions, 550 flow. Second operand 21 states and 4875 transitions. [2022-11-18 20:33:43,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 270 transitions, 740 flow [2022-11-18 20:33:43,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 270 transitions, 726 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-18 20:33:43,928 INFO L231 Difference]: Finished difference. Result has 277 places, 259 transitions, 674 flow [2022-11-18 20:33:43,929 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=674, PETRI_PLACES=277, PETRI_TRANSITIONS=259} [2022-11-18 20:33:43,932 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 36 predicate places. [2022-11-18 20:33:43,932 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 259 transitions, 674 flow [2022-11-18 20:33:43,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 232.27777777777777) internal successors, (4181), 18 states have internal predecessors, (4181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:43,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:33:43,935 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:43,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 20:33:44,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:44,140 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-18 20:33:44,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:44,141 INFO L85 PathProgramCache]: Analyzing trace with hash 184196231, now seen corresponding path program 3 times [2022-11-18 20:33:44,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:44,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987323699] [2022-11-18 20:33:44,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:44,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:44,587 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:33:44,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:44,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987323699] [2022-11-18 20:33:44,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987323699] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:33:44,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029889100] [2022-11-18 20:33:44,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:33:44,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:44,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:44,592 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:33:44,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:33:44,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-18 20:33:44,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:33:44,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:33:44,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:33:44,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:33:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:33:45,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029889100] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:33:45,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:33:45,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 20:33:45,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601731502] [2022-11-18 20:33:45,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:33:45,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:33:45,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:45,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:33:45,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:33:45,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 269 [2022-11-18 20:33:45,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 259 transitions, 674 flow. Second operand has 23 states, 23 states have (on average 232.43478260869566) internal successors, (5346), 23 states have internal predecessors, (5346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:45,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:33:45,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 269 [2022-11-18 20:33:45,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:33:45,678 INFO L130 PetriNetUnfolder]: 3/304 cut-off events. [2022-11-18 20:33:45,679 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2022-11-18 20:33:45,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 304 events. 3/304 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 561 event pairs, 0 based on Foata normal form. 3/288 useless extension candidates. Maximal degree in co-relation 485. Up to 17 conditions per place. [2022-11-18 20:33:45,683 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 26 selfloop transitions, 30 changer transitions 0/285 dead transitions. [2022-11-18 20:33:45,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 285 transitions, 932 flow [2022-11-18 20:33:45,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:33:45,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:33:45,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 6959 transitions. [2022-11-18 20:33:45,702 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8623296158612144 [2022-11-18 20:33:45,702 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 6959 transitions. [2022-11-18 20:33:45,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 6959 transitions. [2022-11-18 20:33:45,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:33:45,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 6959 transitions. [2022-11-18 20:33:45,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 231.96666666666667) internal successors, (6959), 30 states have internal predecessors, (6959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:45,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 269.0) internal successors, (8339), 31 states have internal predecessors, (8339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:45,785 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 269.0) internal successors, (8339), 31 states have internal predecessors, (8339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:45,786 INFO L175 Difference]: Start difference. First operand has 277 places, 259 transitions, 674 flow. Second operand 30 states and 6959 transitions. [2022-11-18 20:33:45,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 285 transitions, 932 flow [2022-11-18 20:33:45,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 285 transitions, 902 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-18 20:33:45,796 INFO L231 Difference]: Finished difference. Result has 304 places, 269 transitions, 802 flow [2022-11-18 20:33:45,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=802, PETRI_PLACES=304, PETRI_TRANSITIONS=269} [2022-11-18 20:33:45,798 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 63 predicate places. [2022-11-18 20:33:45,798 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 269 transitions, 802 flow [2022-11-18 20:33:45,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 232.43478260869566) internal successors, (5346), 23 states have internal predecessors, (5346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:45,801 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:33:45,801 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:45,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:46,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:46,009 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-18 20:33:46,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:46,009 INFO L85 PathProgramCache]: Analyzing trace with hash 926446105, now seen corresponding path program 4 times [2022-11-18 20:33:46,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:46,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148655368] [2022-11-18 20:33:46,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:46,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:46,041 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:46,106 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:33:46,106 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:33:46,108 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-18 20:33:46,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-18 20:33:46,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-18 20:33:46,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-18 20:33:46,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-18 20:33:46,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-18 20:33:46,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-18 20:33:46,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-18 20:33:46,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-18 20:33:46,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-18 20:33:46,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-18 20:33:46,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-18 20:33:46,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-18 20:33:46,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-18 20:33:46,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-18 20:33:46,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-18 20:33:46,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-18 20:33:46,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:33:46,114 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2022-11-18 20:33:46,117 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:33:46,118 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:33:46,175 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:33:46,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 374 transitions, 766 flow [2022-11-18 20:33:46,313 INFO L130 PetriNetUnfolder]: 75/627 cut-off events. [2022-11-18 20:33:46,314 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 20:33:46,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 627 events. 75/627 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3127 event pairs, 0 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 382. Up to 12 conditions per place. [2022-11-18 20:33:46,325 INFO L82 GeneralOperation]: Start removeDead. Operand has 334 places, 374 transitions, 766 flow [2022-11-18 20:33:46,334 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 334 places, 374 transitions, 766 flow [2022-11-18 20:33:46,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:33:46,336 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;@5b286356, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:33:46,336 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-18 20:33:46,346 INFO L130 PetriNetUnfolder]: 11/115 cut-off events. [2022-11-18 20:33:46,346 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:33:46,347 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:33:46,347 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:46,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 20:33:46,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:46,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2046676050, now seen corresponding path program 1 times [2022-11-18 20:33:46,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:46,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980060482] [2022-11-18 20:33:46,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:46,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:46,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:46,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:46,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980060482] [2022-11-18 20:33:46,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980060482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:46,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:33:46,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:33:46,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088081662] [2022-11-18 20:33:46,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:46,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:33:46,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:46,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:33:46,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:33:46,375 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 374 [2022-11-18 20:33:46,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 374 transitions, 766 flow. Second operand has 2 states, 2 states have (on average 329.5) internal successors, (659), 2 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:46,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:33:46,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 374 [2022-11-18 20:33:46,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:33:46,550 INFO L130 PetriNetUnfolder]: 9/556 cut-off events. [2022-11-18 20:33:46,550 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-18 20:33:46,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 556 events. 9/556 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2564 event pairs, 0 based on Foata normal form. 91/597 useless extension candidates. Maximal degree in co-relation 341. Up to 7 conditions per place. [2022-11-18 20:33:46,563 INFO L137 encePairwiseOnDemand]: 335/374 looper letters, 4 selfloop transitions, 0 changer transitions 1/332 dead transitions. [2022-11-18 20:33:46,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 332 transitions, 690 flow [2022-11-18 20:33:46,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:33:46,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:33:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 699 transitions. [2022-11-18 20:33:46,566 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9344919786096256 [2022-11-18 20:33:46,566 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 699 transitions. [2022-11-18 20:33:46,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 699 transitions. [2022-11-18 20:33:46,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:33:46,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 699 transitions. [2022-11-18 20:33:46,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 349.5) internal successors, (699), 2 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:46,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 374.0) internal successors, (1122), 3 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:46,572 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 374.0) internal successors, (1122), 3 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:46,572 INFO L175 Difference]: Start difference. First operand has 334 places, 374 transitions, 766 flow. Second operand 2 states and 699 transitions. [2022-11-18 20:33:46,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 332 transitions, 690 flow [2022-11-18 20:33:46,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 332 transitions, 690 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:33:46,580 INFO L231 Difference]: Finished difference. Result has 332 places, 331 transitions, 680 flow [2022-11-18 20:33:46,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=680, PETRI_PLACES=332, PETRI_TRANSITIONS=331} [2022-11-18 20:33:46,582 INFO L288 CegarLoopForPetriNet]: 334 programPoint places, -2 predicate places. [2022-11-18 20:33:46,582 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 331 transitions, 680 flow [2022-11-18 20:33:46,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 329.5) internal successors, (659), 2 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:46,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:33:46,583 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:46,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:33:46,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 20:33:46,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:46,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1109165739, now seen corresponding path program 1 times [2022-11-18 20:33:46,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:46,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161532188] [2022-11-18 20:33:46,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:46,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:46,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:46,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161532188] [2022-11-18 20:33:46,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161532188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:46,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:33:46,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:33:46,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760127467] [2022-11-18 20:33:46,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:46,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:33:46,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:46,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:33:46,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:33:46,631 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 374 [2022-11-18 20:33:46,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 331 transitions, 680 flow. Second operand has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:46,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:33:46,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 374 [2022-11-18 20:33:46,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:33:46,794 INFO L130 PetriNetUnfolder]: 9/559 cut-off events. [2022-11-18 20:33:46,794 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-18 20:33:46,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 559 events. 9/559 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2563 event pairs, 0 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 587. Up to 14 conditions per place. [2022-11-18 20:33:46,807 INFO L137 encePairwiseOnDemand]: 371/374 looper letters, 13 selfloop transitions, 2 changer transitions 0/335 dead transitions. [2022-11-18 20:33:46,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 335 transitions, 718 flow [2022-11-18 20:33:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:33:46,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:33:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 979 transitions. [2022-11-18 20:33:46,810 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8725490196078431 [2022-11-18 20:33:46,810 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 979 transitions. [2022-11-18 20:33:46,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 979 transitions. [2022-11-18 20:33:46,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:33:46,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 979 transitions. [2022-11-18 20:33:46,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:46,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:46,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:46,818 INFO L175 Difference]: Start difference. First operand has 332 places, 331 transitions, 680 flow. Second operand 3 states and 979 transitions. [2022-11-18 20:33:46,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 335 transitions, 718 flow [2022-11-18 20:33:46,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 335 transitions, 718 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:33:46,825 INFO L231 Difference]: Finished difference. Result has 334 places, 332 transitions, 692 flow [2022-11-18 20:33:46,826 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=692, PETRI_PLACES=334, PETRI_TRANSITIONS=332} [2022-11-18 20:33:46,827 INFO L288 CegarLoopForPetriNet]: 334 programPoint places, 0 predicate places. [2022-11-18 20:33:46,827 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 332 transitions, 692 flow [2022-11-18 20:33:46,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:46,828 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:33:46,828 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:46,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:33:46,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 20:33:46,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:46,829 INFO L85 PathProgramCache]: Analyzing trace with hash 126420807, now seen corresponding path program 1 times [2022-11-18 20:33:46,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:46,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808173491] [2022-11-18 20:33:46,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:46,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:46,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:46,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808173491] [2022-11-18 20:33:46,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808173491] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:33:46,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732134287] [2022-11-18 20:33:46,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:46,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:46,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:46,901 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:33:46,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:33:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:47,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:33:47,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:33:47,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:33:47,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732134287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:47,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:33:47,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 20:33:47,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276670976] [2022-11-18 20:33:47,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:47,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:33:47,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:47,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:33:47,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:33:47,060 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 374 [2022-11-18 20:33:47,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 332 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:47,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:33:47,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 374 [2022-11-18 20:33:47,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:33:47,219 INFO L130 PetriNetUnfolder]: 7/481 cut-off events. [2022-11-18 20:33:47,219 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-18 20:33:47,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 481 events. 7/481 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1934 event pairs, 0 based on Foata normal form. 0/441 useless extension candidates. Maximal degree in co-relation 517. Up to 16 conditions per place. [2022-11-18 20:33:47,230 INFO L137 encePairwiseOnDemand]: 371/374 looper letters, 13 selfloop transitions, 2 changer transitions 0/336 dead transitions. [2022-11-18 20:33:47,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 336 transitions, 730 flow [2022-11-18 20:33:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:33:47,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:33:47,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 979 transitions. [2022-11-18 20:33:47,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8725490196078431 [2022-11-18 20:33:47,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 979 transitions. [2022-11-18 20:33:47,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 979 transitions. [2022-11-18 20:33:47,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:33:47,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 979 transitions. [2022-11-18 20:33:47,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:47,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:47,241 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:47,241 INFO L175 Difference]: Start difference. First operand has 334 places, 332 transitions, 692 flow. Second operand 3 states and 979 transitions. [2022-11-18 20:33:47,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 336 transitions, 730 flow [2022-11-18 20:33:47,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 336 transitions, 728 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:33:47,250 INFO L231 Difference]: Finished difference. Result has 336 places, 333 transitions, 702 flow [2022-11-18 20:33:47,251 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=702, PETRI_PLACES=336, PETRI_TRANSITIONS=333} [2022-11-18 20:33:47,252 INFO L288 CegarLoopForPetriNet]: 334 programPoint places, 2 predicate places. [2022-11-18 20:33:47,252 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 333 transitions, 702 flow [2022-11-18 20:33:47,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:47,253 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:33:47,254 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:47,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:47,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:47,463 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 20:33:47,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:47,464 INFO L85 PathProgramCache]: Analyzing trace with hash 358436572, now seen corresponding path program 1 times [2022-11-18 20:33:47,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:47,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124735215] [2022-11-18 20:33:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:47,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:47,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:33:47,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:47,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124735215] [2022-11-18 20:33:47,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124735215] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:33:47,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302590049] [2022-11-18 20:33:47,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:47,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:47,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:47,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:33:47,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:33:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:47,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:33:47,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:47,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:33:47,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:33:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:33:47,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302590049] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:33:47,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:33:47,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:33:47,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424653090] [2022-11-18 20:33:47,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:33:47,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:33:47,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:47,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:33:47,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:33:47,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 374 [2022-11-18 20:33:47,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 333 transitions, 702 flow. Second operand has 10 states, 10 states have (on average 322.1) internal successors, (3221), 10 states have internal predecessors, (3221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:47,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:33:47,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 374 [2022-11-18 20:33:47,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:33:47,981 INFO L130 PetriNetUnfolder]: 7/488 cut-off events. [2022-11-18 20:33:47,981 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-18 20:33:47,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 488 events. 7/488 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1928 event pairs, 0 based on Foata normal form. 2/452 useless extension candidates. Maximal degree in co-relation 535. Up to 11 conditions per place. [2022-11-18 20:33:47,992 INFO L137 encePairwiseOnDemand]: 368/374 looper letters, 14 selfloop transitions, 9 changer transitions 0/343 dead transitions. [2022-11-18 20:33:47,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 343 transitions, 770 flow [2022-11-18 20:33:47,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:33:47,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:33:47,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2905 transitions. [2022-11-18 20:33:47,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8630421865715984 [2022-11-18 20:33:47,998 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2905 transitions. [2022-11-18 20:33:47,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2905 transitions. [2022-11-18 20:33:48,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:33:48,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2905 transitions. [2022-11-18 20:33:48,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 322.77777777777777) internal successors, (2905), 9 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:48,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 374.0) internal successors, (3740), 10 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:48,014 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 374.0) internal successors, (3740), 10 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:48,015 INFO L175 Difference]: Start difference. First operand has 336 places, 333 transitions, 702 flow. Second operand 9 states and 2905 transitions. [2022-11-18 20:33:48,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 343 transitions, 770 flow [2022-11-18 20:33:48,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 343 transitions, 768 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:33:48,022 INFO L231 Difference]: Finished difference. Result has 346 places, 339 transitions, 750 flow [2022-11-18 20:33:48,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=750, PETRI_PLACES=346, PETRI_TRANSITIONS=339} [2022-11-18 20:33:48,025 INFO L288 CegarLoopForPetriNet]: 334 programPoint places, 12 predicate places. [2022-11-18 20:33:48,025 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 339 transitions, 750 flow [2022-11-18 20:33:48,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 322.1) internal successors, (3221), 10 states have internal predecessors, (3221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:48,026 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:33:48,027 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:48,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:48,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:33:48,240 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 20:33:48,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:48,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1381622436, now seen corresponding path program 2 times [2022-11-18 20:33:48,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:48,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621155147] [2022-11-18 20:33:48,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:48,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:33:48,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:48,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621155147] [2022-11-18 20:33:48,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621155147] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:33:48,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226287580] [2022-11-18 20:33:48,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:33:48,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:48,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:48,341 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:33:48,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1298f-aaeb-4625-bb35-94bed3e4d628/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:33:48,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:33:48,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:33:48,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:33:48,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:48,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:33:48,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-18 20:33:48,579 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:33:48,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-18 20:33:48,628 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:33:48,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-18 20:33:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:33:48,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:33:48,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226287580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:48,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:33:48,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-11-18 20:33:48,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627250292] [2022-11-18 20:33:48,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:48,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:33:48,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:48,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:33:48,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:33:48,671 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 374 [2022-11-18 20:33:48,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 339 transitions, 750 flow. Second operand has 6 states, 6 states have (on average 219.33333333333334) internal successors, (1316), 6 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:48,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:33:48,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 374 [2022-11-18 20:33:48,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:36,397 INFO L130 PetriNetUnfolder]: 128902/275858 cut-off events. [2022-11-18 20:34:36,397 INFO L131 PetriNetUnfolder]: For 526/526 co-relation queries the response was YES. [2022-11-18 20:34:37,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472855 conditions, 275858 events. 128902/275858 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 5230. Compared 3501835 event pairs, 58699 based on Foata normal form. 0/242585 useless extension candidates. Maximal degree in co-relation 472845. Up to 132367 conditions per place.