./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_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_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/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_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/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_ff50fac9-ae55-4046-a594-410189f8117d/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 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 --- 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 20:19:46,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:19:46,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:19:46,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:19:46,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:19:46,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:19:46,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:19:46,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:19:46,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:19:46,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:19:46,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:19:46,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:19:46,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:19:46,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:19:46,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:19:46,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:19:46,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:19:46,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:19:46,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:19:46,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:19:46,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:19:46,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:19:46,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:19:46,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:19:46,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:19:46,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:19:46,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:19:46,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:19:46,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:19:46,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:19:46,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:19:46,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:19:46,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:19:46,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:19:46,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:19:46,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:19:46,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:19:46,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:19:46,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:19:46,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:19:46,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:19:46,403 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 20:19:46,425 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:19:46,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:19:46,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:19:46,426 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:19:46,427 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:19:46,427 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:19:46,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:19:46,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:19:46,428 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:19:46,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:19:46,429 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:19:46,429 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:19:46,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:19:46,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:19:46,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:19:46,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:19:46,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:19:46,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:19:46,430 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 20:19:46,431 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:19:46,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:19:46,431 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:19:46,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:19:46,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:19:46,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:19:46,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:19:46,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:19:46,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:19:46,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:19:46,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:19:46,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:19:46,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:19:46,433 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:19:46,434 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:19:46,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:19:46,434 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_ff50fac9-ae55-4046-a594-410189f8117d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 [2022-11-18 20:19:46,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:19:46,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:19:46,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:19:46,797 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:19:46,798 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:19:46,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2022-11-18 20:19:46,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/data/9a75bbf0f/9bc850270bdf4e72823248d19ea1176e/FLAGfad88fb29 [2022-11-18 20:19:47,623 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:19:47,624 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2022-11-18 20:19:47,646 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/data/9a75bbf0f/9bc850270bdf4e72823248d19ea1176e/FLAGfad88fb29 [2022-11-18 20:19:47,820 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/data/9a75bbf0f/9bc850270bdf4e72823248d19ea1176e [2022-11-18 20:19:47,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:19:47,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:19:47,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:19:47,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:19:47,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:19:47,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:19:47" (1/1) ... [2022-11-18 20:19:47,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69a57026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:47, skipping insertion in model container [2022-11-18 20:19:47,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:19:47" (1/1) ... [2022-11-18 20:19:47,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:19:47,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:19:48,537 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_ff50fac9-ae55-4046-a594-410189f8117d/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2022-11-18 20:19:48,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:19:48,604 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:19:48,660 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_ff50fac9-ae55-4046-a594-410189f8117d/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2022-11-18 20:19:48,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:19:48,760 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:19:48,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:48 WrapperNode [2022-11-18 20:19:48,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:19:48,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:19:48,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:19:48,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:19:48,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:48" (1/1) ... [2022-11-18 20:19:48,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:48" (1/1) ... [2022-11-18 20:19:48,851 INFO L138 Inliner]: procedures = 273, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 147 [2022-11-18 20:19:48,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:19:48,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:19:48,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:19:48,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:19:48,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:48" (1/1) ... [2022-11-18 20:19:48,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:48" (1/1) ... [2022-11-18 20:19:48,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:48" (1/1) ... [2022-11-18 20:19:48,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:48" (1/1) ... [2022-11-18 20:19:48,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:48" (1/1) ... [2022-11-18 20:19:48,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:48" (1/1) ... [2022-11-18 20:19:48,906 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:48" (1/1) ... [2022-11-18 20:19:48,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:48" (1/1) ... [2022-11-18 20:19:48,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:19:48,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:19:48,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:19:48,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:19:48,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:48" (1/1) ... [2022-11-18 20:19:48,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:19:48,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:48,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:19:48,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:19:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:19:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:19:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:19:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:19:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:19:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:19:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:19:49,014 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:19:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:19:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:19:49,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:19:49,016 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 20:19:49,220 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:19:49,222 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:19:49,644 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:19:49,653 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:19:49,653 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-18 20:19:49,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:19:49 BoogieIcfgContainer [2022-11-18 20:19:49,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:19:49,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:19:49,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:19:49,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:19:49,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:19:47" (1/3) ... [2022-11-18 20:19:49,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701b8f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:19:49, skipping insertion in model container [2022-11-18 20:19:49,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:48" (2/3) ... [2022-11-18 20:19:49,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701b8f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:19:49, skipping insertion in model container [2022-11-18 20:19:49,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:19:49" (3/3) ... [2022-11-18 20:19:49,680 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2022-11-18 20:19:49,689 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:19:49,700 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:19:49,700 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 20:19:49,701 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:19:49,821 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:19:49,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 160 transitions, 328 flow [2022-11-18 20:19:49,962 INFO L130 PetriNetUnfolder]: 17/213 cut-off events. [2022-11-18 20:19:49,962 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:19:49,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 213 events. 17/213 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 601 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 116. Up to 4 conditions per place. [2022-11-18 20:19:49,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 160 transitions, 328 flow [2022-11-18 20:19:49,976 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 160 transitions, 328 flow [2022-11-18 20:19:49,985 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:19:49,992 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;@608b56f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:19:49,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-18 20:19:50,007 INFO L130 PetriNetUnfolder]: 1/53 cut-off events. [2022-11-18 20:19:50,007 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:19:50,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:50,008 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] [2022-11-18 20:19:50,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-18 20:19:50,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:50,015 INFO L85 PathProgramCache]: Analyzing trace with hash 455898412, now seen corresponding path program 1 times [2022-11-18 20:19:50,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:50,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111337150] [2022-11-18 20:19:50,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:50,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,358 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 20:19:50,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:50,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111337150] [2022-11-18 20:19:50,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111337150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:50,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:50,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:19:50,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816947350] [2022-11-18 20:19:50,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:50,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:19:50,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:50,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:19:50,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:19:50,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 160 [2022-11-18 20:19:50,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 160 transitions, 328 flow. Second operand has 2 states, 2 states have (on average 146.5) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 20:19:50,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:50,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 160 [2022-11-18 20:19:50,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:50,565 INFO L130 PetriNetUnfolder]: 1/195 cut-off events. [2022-11-18 20:19:50,566 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-18 20:19:50,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 195 events. 1/195 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 356 event pairs, 0 based on Foata normal form. 16/194 useless extension candidates. Maximal degree in co-relation 4. Up to 3 conditions per place. [2022-11-18 20:19:50,570 INFO L137 encePairwiseOnDemand]: 149/160 looper letters, 2 selfloop transitions, 0 changer transitions 0/148 dead transitions. [2022-11-18 20:19:50,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 148 transitions, 308 flow [2022-11-18 20:19:50,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:19:50,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:19:50,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 305 transitions. [2022-11-18 20:19:50,599 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.953125 [2022-11-18 20:19:50,600 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 305 transitions. [2022-11-18 20:19:50,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 305 transitions. [2022-11-18 20:19:50,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:50,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 305 transitions. [2022-11-18 20:19:50,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 152.5) internal successors, (305), 2 states have internal predecessors, (305), 0 states have call successors, (0), 0 states 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 20:19:50,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:50,626 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:50,628 INFO L175 Difference]: Start difference. First operand has 151 places, 160 transitions, 328 flow. Second operand 2 states and 305 transitions. [2022-11-18 20:19:50,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 148 transitions, 308 flow [2022-11-18 20:19:50,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 148 transitions, 308 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:19:50,638 INFO L231 Difference]: Finished difference. Result has 151 places, 148 transitions, 304 flow [2022-11-18 20:19:50,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=304, PETRI_PLACES=151, PETRI_TRANSITIONS=148} [2022-11-18 20:19:50,645 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 0 predicate places. [2022-11-18 20:19:50,645 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 148 transitions, 304 flow [2022-11-18 20:19:50,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 146.5) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 20:19:50,646 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:50,651 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] [2022-11-18 20:19:50,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:19:50,652 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-18 20:19:50,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:50,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1343402093, now seen corresponding path program 1 times [2022-11-18 20:19:50,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:50,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297553380] [2022-11-18 20:19:50,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:50,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,813 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 20:19:50,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:50,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297553380] [2022-11-18 20:19:50,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297553380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:50,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:50,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:19:50,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794188293] [2022-11-18 20:19:50,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:50,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:19:50,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:50,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:19:50,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:19:50,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 160 [2022-11-18 20:19:50,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 148 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states 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 20:19:50,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:50,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 160 [2022-11-18 20:19:50,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:50,920 INFO L130 PetriNetUnfolder]: 0/167 cut-off events. [2022-11-18 20:19:50,920 INFO L131 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2022-11-18 20:19:50,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 167 events. 0/167 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 169 event pairs, 0 based on Foata normal form. 1/155 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-18 20:19:50,922 INFO L137 encePairwiseOnDemand]: 157/160 looper letters, 9 selfloop transitions, 2 changer transitions 0/150 dead transitions. [2022-11-18 20:19:50,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 150 transitions, 330 flow [2022-11-18 20:19:50,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:19:50,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:19:50,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2022-11-18 20:19:50,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.89375 [2022-11-18 20:19:50,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2022-11-18 20:19:50,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2022-11-18 20:19:50,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:50,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2022-11-18 20:19:50,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states 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 20:19:50,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 20:19:50,931 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 20:19:50,931 INFO L175 Difference]: Start difference. First operand has 151 places, 148 transitions, 304 flow. Second operand 3 states and 429 transitions. [2022-11-18 20:19:50,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 150 transitions, 330 flow [2022-11-18 20:19:50,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 150 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:19:50,940 INFO L231 Difference]: Finished difference. Result has 154 places, 148 transitions, 312 flow [2022-11-18 20:19:50,940 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=154, PETRI_TRANSITIONS=148} [2022-11-18 20:19:50,941 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 3 predicate places. [2022-11-18 20:19:50,941 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 148 transitions, 312 flow [2022-11-18 20:19:50,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states 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 20:19:50,942 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:50,942 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 20:19:50,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:19:50,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-18 20:19:50,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:50,947 INFO L85 PathProgramCache]: Analyzing trace with hash 80319335, now seen corresponding path program 1 times [2022-11-18 20:19:50,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:50,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869741378] [2022-11-18 20:19:50,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:50,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:51,017 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 20:19:51,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:51,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869741378] [2022-11-18 20:19:51,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869741378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:51,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:51,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:19:51,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290477902] [2022-11-18 20:19:51,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:51,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:19:51,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:51,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:19:51,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:19:51,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 160 [2022-11-18 20:19:51,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 148 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states 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 20:19:51,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:51,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 160 [2022-11-18 20:19:51,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:51,132 INFO L130 PetriNetUnfolder]: 9/415 cut-off events. [2022-11-18 20:19:51,132 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2022-11-18 20:19:51,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 415 events. 9/415 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1596 event pairs, 2 based on Foata normal form. 1/374 useless extension candidates. Maximal degree in co-relation 456. Up to 17 conditions per place. [2022-11-18 20:19:51,135 INFO L137 encePairwiseOnDemand]: 156/160 looper letters, 10 selfloop transitions, 3 changer transitions 0/153 dead transitions. [2022-11-18 20:19:51,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 153 transitions, 351 flow [2022-11-18 20:19:51,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:19:51,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:19:51,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2022-11-18 20:19:51,139 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9041666666666667 [2022-11-18 20:19:51,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2022-11-18 20:19:51,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2022-11-18 20:19:51,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:51,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2022-11-18 20:19:51,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states 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 20:19:51,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 20:19:51,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 20:19:51,145 INFO L175 Difference]: Start difference. First operand has 154 places, 148 transitions, 312 flow. Second operand 3 states and 434 transitions. [2022-11-18 20:19:51,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 153 transitions, 351 flow [2022-11-18 20:19:51,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 153 transitions, 347 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:19:51,151 INFO L231 Difference]: Finished difference. Result has 156 places, 150 transitions, 330 flow [2022-11-18 20:19:51,152 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=156, PETRI_TRANSITIONS=150} [2022-11-18 20:19:51,154 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 5 predicate places. [2022-11-18 20:19:51,155 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 150 transitions, 330 flow [2022-11-18 20:19:51,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states 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 20:19:51,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:51,156 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] [2022-11-18 20:19:51,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:19:51,157 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-18 20:19:51,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:51,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1284264501, now seen corresponding path program 1 times [2022-11-18 20:19:51,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:51,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819391580] [2022-11-18 20:19:51,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:51,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:19:51,227 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:19:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:19:51,303 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:19:51,303 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:19:51,304 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2022-11-18 20:19:51,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2022-11-18 20:19:51,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2022-11-18 20:19:51,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2022-11-18 20:19:51,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2022-11-18 20:19:51,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2022-11-18 20:19:51,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2022-11-18 20:19:51,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2022-11-18 20:19:51,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2022-11-18 20:19:51,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2022-11-18 20:19:51,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2022-11-18 20:19:51,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2022-11-18 20:19:51,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2022-11-18 20:19:51,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2022-11-18 20:19:51,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:19:51,316 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-18 20:19:51,324 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:19:51,324 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:19:51,385 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:19:51,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 220 transitions, 458 flow [2022-11-18 20:19:51,466 INFO L130 PetriNetUnfolder]: 31/357 cut-off events. [2022-11-18 20:19:51,466 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 20:19:51,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 357 events. 31/357 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1289 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 215. Up to 8 conditions per place. [2022-11-18 20:19:51,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 220 transitions, 458 flow [2022-11-18 20:19:51,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 220 transitions, 458 flow [2022-11-18 20:19:51,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:19:51,490 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;@608b56f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:19:51,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-18 20:19:51,499 INFO L130 PetriNetUnfolder]: 1/51 cut-off events. [2022-11-18 20:19:51,499 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:19:51,499 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:51,500 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] [2022-11-18 20:19:51,500 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-18 20:19:51,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:51,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1994608084, now seen corresponding path program 1 times [2022-11-18 20:19:51,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:51,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681261782] [2022-11-18 20:19:51,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:51,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:51,561 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 20:19:51,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:51,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681261782] [2022-11-18 20:19:51,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681261782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:51,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:51,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:19:51,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936009151] [2022-11-18 20:19:51,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:51,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:19:51,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:51,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:19:51,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:19:51,565 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 220 [2022-11-18 20:19:51,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 220 transitions, 458 flow. Second operand has 2 states, 2 states have (on average 198.5) internal successors, (397), 2 states have internal predecessors, (397), 0 states have call successors, (0), 0 states 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 20:19:51,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:51,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 220 [2022-11-18 20:19:51,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:51,663 INFO L130 PetriNetUnfolder]: 3/326 cut-off events. [2022-11-18 20:19:51,663 INFO L131 PetriNetUnfolder]: For 21/29 co-relation queries the response was YES. [2022-11-18 20:19:51,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 326 events. 3/326 cut-off events. For 21/29 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 959 event pairs, 0 based on Foata normal form. 40/335 useless extension candidates. Maximal degree in co-relation 199. Up to 7 conditions per place. [2022-11-18 20:19:51,666 INFO L137 encePairwiseOnDemand]: 203/220 looper letters, 4 selfloop transitions, 0 changer transitions 0/202 dead transitions. [2022-11-18 20:19:51,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 202 transitions, 430 flow [2022-11-18 20:19:51,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:19:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:19:51,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 417 transitions. [2022-11-18 20:19:51,669 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9477272727272728 [2022-11-18 20:19:51,669 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 417 transitions. [2022-11-18 20:19:51,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 417 transitions. [2022-11-18 20:19:51,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:51,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 417 transitions. [2022-11-18 20:19:51,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 208.5) internal successors, (417), 2 states have internal predecessors, (417), 0 states have call successors, (0), 0 states 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 20:19:51,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states 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 20:19:51,673 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states 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 20:19:51,673 INFO L175 Difference]: Start difference. First operand has 206 places, 220 transitions, 458 flow. Second operand 2 states and 417 transitions. [2022-11-18 20:19:51,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 202 transitions, 430 flow [2022-11-18 20:19:51,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 202 transitions, 430 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:19:51,678 INFO L231 Difference]: Finished difference. Result has 206 places, 202 transitions, 422 flow [2022-11-18 20:19:51,678 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=422, PETRI_PLACES=206, PETRI_TRANSITIONS=202} [2022-11-18 20:19:51,680 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 0 predicate places. [2022-11-18 20:19:51,680 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 202 transitions, 422 flow [2022-11-18 20:19:51,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 198.5) internal successors, (397), 2 states have internal predecessors, (397), 0 states have call successors, (0), 0 states 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 20:19:51,681 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:51,681 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] [2022-11-18 20:19:51,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:19:51,682 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-18 20:19:51,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:51,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1107104403, now seen corresponding path program 1 times [2022-11-18 20:19:51,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:51,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762202028] [2022-11-18 20:19:51,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:51,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:51,802 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 20:19:51,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:51,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762202028] [2022-11-18 20:19:51,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762202028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:51,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:51,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:19:51,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931273418] [2022-11-18 20:19:51,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:51,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:19:51,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:51,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:19:51,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:19:51,806 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 220 [2022-11-18 20:19:51,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 202 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states 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 20:19:51,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:51,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 220 [2022-11-18 20:19:51,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:51,908 INFO L130 PetriNetUnfolder]: 2/298 cut-off events. [2022-11-18 20:19:51,909 INFO L131 PetriNetUnfolder]: For 31/89 co-relation queries the response was YES. [2022-11-18 20:19:51,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 298 events. 2/298 cut-off events. For 31/89 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 770 event pairs, 0 based on Foata normal form. 1/272 useless extension candidates. Maximal degree in co-relation 329. Up to 16 conditions per place. [2022-11-18 20:19:51,913 INFO L137 encePairwiseOnDemand]: 217/220 looper letters, 13 selfloop transitions, 2 changer transitions 0/206 dead transitions. [2022-11-18 20:19:51,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 206 transitions, 460 flow [2022-11-18 20:19:51,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:19:51,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:19:51,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2022-11-18 20:19:51,916 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8924242424242425 [2022-11-18 20:19:51,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2022-11-18 20:19:51,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2022-11-18 20:19:51,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:51,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2022-11-18 20:19:51,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states 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 20:19:51,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states 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 20:19:51,921 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states 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 20:19:51,921 INFO L175 Difference]: Start difference. First operand has 206 places, 202 transitions, 422 flow. Second operand 3 states and 589 transitions. [2022-11-18 20:19:51,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 206 transitions, 460 flow [2022-11-18 20:19:51,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 206 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:19:51,926 INFO L231 Difference]: Finished difference. Result has 209 places, 203 transitions, 434 flow [2022-11-18 20:19:51,926 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=209, PETRI_TRANSITIONS=203} [2022-11-18 20:19:51,930 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 3 predicate places. [2022-11-18 20:19:51,931 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 203 transitions, 434 flow [2022-11-18 20:19:51,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states 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 20:19:51,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:51,932 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 20:19:51,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:19:51,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-18 20:19:51,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:51,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1390679073, now seen corresponding path program 1 times [2022-11-18 20:19:51,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:51,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587541996] [2022-11-18 20:19:51,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:51,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,003 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 20:19:52,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:52,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587541996] [2022-11-18 20:19:52,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587541996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:52,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:52,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:19:52,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084683628] [2022-11-18 20:19:52,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:52,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:19:52,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:52,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:19:52,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:19:52,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 220 [2022-11-18 20:19:52,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 203 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 20:19:52,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:52,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 220 [2022-11-18 20:19:52,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:52,557 INFO L130 PetriNetUnfolder]: 120/2382 cut-off events. [2022-11-18 20:19:52,558 INFO L131 PetriNetUnfolder]: For 107/175 co-relation queries the response was YES. [2022-11-18 20:19:52,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2682 conditions, 2382 events. 120/2382 cut-off events. For 107/175 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 20665 event pairs, 31 based on Foata normal form. 6/2118 useless extension candidates. Maximal degree in co-relation 2675. Up to 156 conditions per place. [2022-11-18 20:19:52,583 INFO L137 encePairwiseOnDemand]: 213/220 looper letters, 18 selfloop transitions, 5 changer transitions 0/213 dead transitions. [2022-11-18 20:19:52,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 213 transitions, 511 flow [2022-11-18 20:19:52,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:19:52,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:19:52,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2022-11-18 20:19:52,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.896969696969697 [2022-11-18 20:19:52,591 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2022-11-18 20:19:52,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2022-11-18 20:19:52,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:52,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2022-11-18 20:19:52,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states 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 20:19:52,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states 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 20:19:52,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states 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 20:19:52,597 INFO L175 Difference]: Start difference. First operand has 209 places, 203 transitions, 434 flow. Second operand 3 states and 592 transitions. [2022-11-18 20:19:52,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 213 transitions, 511 flow [2022-11-18 20:19:52,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 213 transitions, 509 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:19:52,603 INFO L231 Difference]: Finished difference. Result has 212 places, 208 transitions, 476 flow [2022-11-18 20:19:52,604 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=212, PETRI_TRANSITIONS=208} [2022-11-18 20:19:52,605 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 6 predicate places. [2022-11-18 20:19:52,605 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 208 transitions, 476 flow [2022-11-18 20:19:52,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 20:19:52,606 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:52,606 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 20:19:52,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:19:52,607 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-18 20:19:52,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:52,607 INFO L85 PathProgramCache]: Analyzing trace with hash -317239367, now seen corresponding path program 1 times [2022-11-18 20:19:52,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:52,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656531188] [2022-11-18 20:19:52,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:52,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,765 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 20:19:52,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:52,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656531188] [2022-11-18 20:19:52,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656531188] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:52,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22524091] [2022-11-18 20:19:52,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:52,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:52,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:52,779 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:52,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:19:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:19:52,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:52,926 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 20:19:52,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:52,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22524091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:52,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:52,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-18 20:19:52,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078935771] [2022-11-18 20:19:52,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:52,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:19:52,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:52,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:19:52,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:19:52,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 220 [2022-11-18 20:19:52,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 208 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states 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 20:19:52,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:52,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 220 [2022-11-18 20:19:52,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:53,574 INFO L130 PetriNetUnfolder]: 165/3456 cut-off events. [2022-11-18 20:19:53,575 INFO L131 PetriNetUnfolder]: For 297/410 co-relation queries the response was YES. [2022-11-18 20:19:53,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4119 conditions, 3456 events. 165/3456 cut-off events. For 297/410 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 34067 event pairs, 50 based on Foata normal form. 5/3141 useless extension candidates. Maximal degree in co-relation 4111. Up to 242 conditions per place. [2022-11-18 20:19:53,604 INFO L137 encePairwiseOnDemand]: 214/220 looper letters, 25 selfloop transitions, 8 changer transitions 0/220 dead transitions. [2022-11-18 20:19:53,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 220 transitions, 594 flow [2022-11-18 20:19:53,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:19:53,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:19:53,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 583 transitions. [2022-11-18 20:19:53,608 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2022-11-18 20:19:53,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 583 transitions. [2022-11-18 20:19:53,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 583 transitions. [2022-11-18 20:19:53,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:53,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 583 transitions. [2022-11-18 20:19:53,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states 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 20:19:53,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states 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 20:19:53,613 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states 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 20:19:53,614 INFO L175 Difference]: Start difference. First operand has 212 places, 208 transitions, 476 flow. Second operand 3 states and 583 transitions. [2022-11-18 20:19:53,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 220 transitions, 594 flow [2022-11-18 20:19:53,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 220 transitions, 576 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:19:53,620 INFO L231 Difference]: Finished difference. Result has 214 places, 214 transitions, 532 flow [2022-11-18 20:19:53,621 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=532, PETRI_PLACES=214, PETRI_TRANSITIONS=214} [2022-11-18 20:19:53,622 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, 8 predicate places. [2022-11-18 20:19:53,622 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 214 transitions, 532 flow [2022-11-18 20:19:53,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states 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 20:19:53,623 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:53,623 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] [2022-11-18 20:19:53,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:53,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:53,830 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-18 20:19:53,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:53,832 INFO L85 PathProgramCache]: Analyzing trace with hash -868450892, now seen corresponding path program 1 times [2022-11-18 20:19:53,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:53,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942374272] [2022-11-18 20:19:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:53,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:53,934 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 20:19:53,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:53,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942374272] [2022-11-18 20:19:53,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942374272] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:53,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630308046] [2022-11-18 20:19:53,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:53,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:53,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:53,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:53,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:19:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:54,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:19:54,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:54,141 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 20:19:54,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:54,191 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 20:19:54,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630308046] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:54,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:54,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:19:54,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458905029] [2022-11-18 20:19:54,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:54,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:19:54,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:54,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:19:54,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:54,196 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 220 [2022-11-18 20:19:54,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 214 transitions, 532 flow. Second operand has 10 states, 10 states have (on average 192.3) internal successors, (1923), 10 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states 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 20:19:54,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:54,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 220 [2022-11-18 20:19:54,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:54,329 INFO L130 PetriNetUnfolder]: 4/307 cut-off events. [2022-11-18 20:19:54,329 INFO L131 PetriNetUnfolder]: For 8/11 co-relation queries the response was YES. [2022-11-18 20:19:54,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 307 events. 4/307 cut-off events. For 8/11 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 904 event pairs, 2 based on Foata normal form. 2/288 useless extension candidates. Maximal degree in co-relation 351. Up to 12 conditions per place. [2022-11-18 20:19:54,331 INFO L137 encePairwiseOnDemand]: 215/220 looper letters, 9 selfloop transitions, 7 changer transitions 0/160 dead transitions. [2022-11-18 20:19:54,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 160 transitions, 390 flow [2022-11-18 20:19:54,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:19:54,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:19:54,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1728 transitions. [2022-11-18 20:19:54,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8727272727272727 [2022-11-18 20:19:54,336 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1728 transitions. [2022-11-18 20:19:54,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1728 transitions. [2022-11-18 20:19:54,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:54,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1728 transitions. [2022-11-18 20:19:54,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 192.0) internal successors, (1728), 9 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states 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 20:19:54,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 220.0) internal successors, (2200), 10 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 20:19:54,345 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 220.0) internal successors, (2200), 10 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states 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 20:19:54,346 INFO L175 Difference]: Start difference. First operand has 214 places, 214 transitions, 532 flow. Second operand 9 states and 1728 transitions. [2022-11-18 20:19:54,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 160 transitions, 390 flow [2022-11-18 20:19:54,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 160 transitions, 380 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-11-18 20:19:54,350 INFO L231 Difference]: Finished difference. Result has 170 places, 156 transitions, 354 flow [2022-11-18 20:19:54,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=354, PETRI_PLACES=170, PETRI_TRANSITIONS=156} [2022-11-18 20:19:54,351 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, -36 predicate places. [2022-11-18 20:19:54,351 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 156 transitions, 354 flow [2022-11-18 20:19:54,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 192.3) internal successors, (1923), 10 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states 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 20:19:54,352 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:54,352 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] [2022-11-18 20:19:54,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:54,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:54,558 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-18 20:19:54,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:54,558 INFO L85 PathProgramCache]: Analyzing trace with hash -621623325, now seen corresponding path program 1 times [2022-11-18 20:19:54,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:54,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219931260] [2022-11-18 20:19:54,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:54,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:54,615 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 20:19:54,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:54,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219931260] [2022-11-18 20:19:54,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219931260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:54,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:54,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:19:54,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033088025] [2022-11-18 20:19:54,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:54,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:19:54,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:54,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:19:54,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:19:54,617 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 220 [2022-11-18 20:19:54,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 156 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states 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 20:19:54,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:54,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 220 [2022-11-18 20:19:54,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:54,853 INFO L130 PetriNetUnfolder]: 175/1066 cut-off events. [2022-11-18 20:19:54,853 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-11-18 20:19:54,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1551 conditions, 1066 events. 175/1066 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6443 event pairs, 72 based on Foata normal form. 0/954 useless extension candidates. Maximal degree in co-relation 1542. Up to 233 conditions per place. [2022-11-18 20:19:54,863 INFO L137 encePairwiseOnDemand]: 204/220 looper letters, 35 selfloop transitions, 12 changer transitions 0/177 dead transitions. [2022-11-18 20:19:54,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 177 transitions, 495 flow [2022-11-18 20:19:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:19:54,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:19:54,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2022-11-18 20:19:54,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8545454545454545 [2022-11-18 20:19:54,866 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2022-11-18 20:19:54,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2022-11-18 20:19:54,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:54,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2022-11-18 20:19:54,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states 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 20:19:54,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states 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 20:19:54,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states 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 20:19:54,871 INFO L175 Difference]: Start difference. First operand has 170 places, 156 transitions, 354 flow. Second operand 3 states and 564 transitions. [2022-11-18 20:19:54,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 177 transitions, 495 flow [2022-11-18 20:19:54,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 177 transitions, 480 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 20:19:54,876 INFO L231 Difference]: Finished difference. Result has 169 places, 168 transitions, 443 flow [2022-11-18 20:19:54,876 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=443, PETRI_PLACES=169, PETRI_TRANSITIONS=168} [2022-11-18 20:19:54,877 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, -37 predicate places. [2022-11-18 20:19:54,877 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 168 transitions, 443 flow [2022-11-18 20:19:54,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states 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 20:19:54,884 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:54,884 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:54,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:19:54,885 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-18 20:19:54,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:54,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1160559050, now seen corresponding path program 1 times [2022-11-18 20:19:54,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:54,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111973481] [2022-11-18 20:19:54,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:54,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:19:54,906 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:19:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:19:54,929 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:19:54,930 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:19:54,930 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-18 20:19:54,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-11-18 20:19:54,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-11-18 20:19:54,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-11-18 20:19:54,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-11-18 20:19:54,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-11-18 20:19:54,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-11-18 20:19:54,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-11-18 20:19:54,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-11-18 20:19:54,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-11-18 20:19:54,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-11-18 20:19:54,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-11-18 20:19:54,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-11-18 20:19:54,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-11-18 20:19:54,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-11-18 20:19:54,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-11-18 20:19:54,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-11-18 20:19:54,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-11-18 20:19:54,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-11-18 20:19:54,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:19:54,934 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:54,935 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:19:54,935 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 20:19:54,968 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:19:54,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 280 transitions, 590 flow [2022-11-18 20:19:55,105 INFO L130 PetriNetUnfolder]: 50/546 cut-off events. [2022-11-18 20:19:55,105 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 20:19:55,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 546 events. 50/546 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2284 event pairs, 1 based on Foata normal form. 0/461 useless extension candidates. Maximal degree in co-relation 365. Up to 16 conditions per place. [2022-11-18 20:19:55,112 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 280 transitions, 590 flow [2022-11-18 20:19:55,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 280 transitions, 590 flow [2022-11-18 20:19:55,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:19:55,123 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;@608b56f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:19:55,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-18 20:19:55,128 INFO L130 PetriNetUnfolder]: 1/51 cut-off events. [2022-11-18 20:19:55,129 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:19:55,129 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:55,129 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] [2022-11-18 20:19:55,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-18 20:19:55,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:55,132 INFO L85 PathProgramCache]: Analyzing trace with hash 743339052, now seen corresponding path program 1 times [2022-11-18 20:19:55,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:55,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591534343] [2022-11-18 20:19:55,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:55,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,174 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 20:19:55,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:55,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591534343] [2022-11-18 20:19:55,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591534343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:55,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:55,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:19:55,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759402522] [2022-11-18 20:19:55,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:55,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:19:55,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:55,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:19:55,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:19:55,177 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 280 [2022-11-18 20:19:55,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 280 transitions, 590 flow. Second operand has 2 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 states 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 20:19:55,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:55,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 280 [2022-11-18 20:19:55,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:55,311 INFO L130 PetriNetUnfolder]: 8/500 cut-off events. [2022-11-18 20:19:55,312 INFO L131 PetriNetUnfolder]: For 51/68 co-relation queries the response was YES. [2022-11-18 20:19:55,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 500 events. 8/500 cut-off events. For 51/68 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1861 event pairs, 1 based on Foata normal form. 98/549 useless extension candidates. Maximal degree in co-relation 340. Up to 16 conditions per place. [2022-11-18 20:19:55,325 INFO L137 encePairwiseOnDemand]: 257/280 looper letters, 6 selfloop transitions, 0 changer transitions 0/256 dead transitions. [2022-11-18 20:19:55,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 256 transitions, 554 flow [2022-11-18 20:19:55,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:19:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:19:55,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 529 transitions. [2022-11-18 20:19:55,328 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9446428571428571 [2022-11-18 20:19:55,328 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 529 transitions. [2022-11-18 20:19:55,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 529 transitions. [2022-11-18 20:19:55,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:55,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 529 transitions. [2022-11-18 20:19:55,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 264.5) internal successors, (529), 2 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 20:19:55,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states 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 20:19:55,333 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states 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 20:19:55,333 INFO L175 Difference]: Start difference. First operand has 261 places, 280 transitions, 590 flow. Second operand 2 states and 529 transitions. [2022-11-18 20:19:55,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 256 transitions, 554 flow [2022-11-18 20:19:55,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 256 transitions, 554 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:19:55,342 INFO L231 Difference]: Finished difference. Result has 261 places, 256 transitions, 542 flow [2022-11-18 20:19:55,343 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=542, PETRI_PLACES=261, PETRI_TRANSITIONS=256} [2022-11-18 20:19:55,345 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 0 predicate places. [2022-11-18 20:19:55,345 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 256 transitions, 542 flow [2022-11-18 20:19:55,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 states 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 20:19:55,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:55,346 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] [2022-11-18 20:19:55,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:19:55,346 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-18 20:19:55,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:55,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1630842733, now seen corresponding path program 1 times [2022-11-18 20:19:55,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:55,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883666821] [2022-11-18 20:19:55,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:55,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,402 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 20:19:55,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:55,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883666821] [2022-11-18 20:19:55,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883666821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:55,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:55,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:19:55,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038323340] [2022-11-18 20:19:55,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:55,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:19:55,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:55,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:19:55,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:19:55,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 280 [2022-11-18 20:19:55,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 256 transitions, 542 flow. Second operand has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states 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 20:19:55,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:55,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 280 [2022-11-18 20:19:55,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:55,540 INFO L130 PetriNetUnfolder]: 7/472 cut-off events. [2022-11-18 20:19:55,540 INFO L131 PetriNetUnfolder]: For 43/115 co-relation queries the response was YES. [2022-11-18 20:19:55,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 472 events. 7/472 cut-off events. For 43/115 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1675 event pairs, 1 based on Foata normal form. 1/428 useless extension candidates. Maximal degree in co-relation 530. Up to 30 conditions per place. [2022-11-18 20:19:55,547 INFO L137 encePairwiseOnDemand]: 277/280 looper letters, 15 selfloop transitions, 2 changer transitions 0/260 dead transitions. [2022-11-18 20:19:55,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 260 transitions, 584 flow [2022-11-18 20:19:55,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:19:55,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:19:55,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 747 transitions. [2022-11-18 20:19:55,550 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8892857142857142 [2022-11-18 20:19:55,550 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 747 transitions. [2022-11-18 20:19:55,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 747 transitions. [2022-11-18 20:19:55,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:55,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 747 transitions. [2022-11-18 20:19:55,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states 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 20:19:55,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 20:19:55,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 20:19:55,555 INFO L175 Difference]: Start difference. First operand has 261 places, 256 transitions, 542 flow. Second operand 3 states and 747 transitions. [2022-11-18 20:19:55,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 260 transitions, 584 flow [2022-11-18 20:19:55,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 260 transitions, 584 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:19:55,561 INFO L231 Difference]: Finished difference. Result has 264 places, 257 transitions, 554 flow [2022-11-18 20:19:55,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=554, PETRI_PLACES=264, PETRI_TRANSITIONS=257} [2022-11-18 20:19:55,562 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 3 predicate places. [2022-11-18 20:19:55,562 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 257 transitions, 554 flow [2022-11-18 20:19:55,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states 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 20:19:55,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:55,563 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 20:19:55,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:19:55,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-18 20:19:55,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:55,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1822233691, now seen corresponding path program 1 times [2022-11-18 20:19:55,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:55,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696999598] [2022-11-18 20:19:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:55,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,602 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 20:19:55,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:55,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696999598] [2022-11-18 20:19:55,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696999598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:55,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:55,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:19:55,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445152731] [2022-11-18 20:19:55,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:55,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:19:55,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:55,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:19:55,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:19:55,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 280 [2022-11-18 20:19:55,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 257 transitions, 554 flow. Second operand has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states 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 20:19:55,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:55,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 280 [2022-11-18 20:19:55,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:58,141 INFO L130 PetriNetUnfolder]: 910/11324 cut-off events. [2022-11-18 20:19:58,141 INFO L131 PetriNetUnfolder]: For 536/833 co-relation queries the response was YES. [2022-11-18 20:19:58,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13077 conditions, 11324 events. 910/11324 cut-off events. For 536/833 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 137714 event pairs, 290 based on Foata normal form. 23/10006 useless extension candidates. Maximal degree in co-relation 13069. Up to 1038 conditions per place. [2022-11-18 20:19:58,332 INFO L137 encePairwiseOnDemand]: 270/280 looper letters, 25 selfloop transitions, 7 changer transitions 0/271 dead transitions. [2022-11-18 20:19:58,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 271 transitions, 667 flow [2022-11-18 20:19:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:19:58,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:19:58,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 749 transitions. [2022-11-18 20:19:58,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8916666666666667 [2022-11-18 20:19:58,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 749 transitions. [2022-11-18 20:19:58,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 749 transitions. [2022-11-18 20:19:58,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:58,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 749 transitions. [2022-11-18 20:19:58,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 0 states have call successors, (0), 0 states 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 20:19:58,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 20:19:58,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 20:19:58,344 INFO L175 Difference]: Start difference. First operand has 264 places, 257 transitions, 554 flow. Second operand 3 states and 749 transitions. [2022-11-18 20:19:58,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 271 transitions, 667 flow [2022-11-18 20:19:58,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 271 transitions, 665 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:19:58,352 INFO L231 Difference]: Finished difference. Result has 267 places, 264 transitions, 614 flow [2022-11-18 20:19:58,352 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=614, PETRI_PLACES=267, PETRI_TRANSITIONS=264} [2022-11-18 20:19:58,353 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 6 predicate places. [2022-11-18 20:19:58,354 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 264 transitions, 614 flow [2022-11-18 20:19:58,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states 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 20:19:58,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:58,355 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 20:19:58,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:19:58,355 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-18 20:19:58,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:58,356 INFO L85 PathProgramCache]: Analyzing trace with hash 590297587, now seen corresponding path program 1 times [2022-11-18 20:19:58,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:58,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955083056] [2022-11-18 20:19:58,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:58,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:58,587 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 20:19:58,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:58,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955083056] [2022-11-18 20:19:58,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955083056] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:58,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406233736] [2022-11-18 20:19:58,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:58,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:58,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:58,589 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:58,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:19:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:58,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:19:58,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:58,727 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 20:19:58,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:58,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406233736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:58,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:58,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-18 20:19:58,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404405693] [2022-11-18 20:19:58,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:58,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:19:58,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:58,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:19:58,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:19:58,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 280 [2022-11-18 20:19:58,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 264 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states 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 20:19:58,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:58,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 280 [2022-11-18 20:19:58,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:01,560 INFO L130 PetriNetUnfolder]: 1231/17999 cut-off events. [2022-11-18 20:20:01,560 INFO L131 PetriNetUnfolder]: For 1717/4228 co-relation queries the response was YES. [2022-11-18 20:20:01,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22081 conditions, 17999 events. 1231/17999 cut-off events. For 1717/4228 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 248785 event pairs, 395 based on Foata normal form. 18/16356 useless extension candidates. Maximal degree in co-relation 22072. Up to 1514 conditions per place. [2022-11-18 20:20:01,770 INFO L137 encePairwiseOnDemand]: 273/280 looper letters, 35 selfloop transitions, 10 changer transitions 0/281 dead transitions. [2022-11-18 20:20:01,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 281 transitions, 780 flow [2022-11-18 20:20:01,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:20:01,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:20:01,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 738 transitions. [2022-11-18 20:20:01,772 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8785714285714286 [2022-11-18 20:20:01,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 738 transitions. [2022-11-18 20:20:01,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 738 transitions. [2022-11-18 20:20:01,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:01,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 738 transitions. [2022-11-18 20:20:01,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states 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 20:20:01,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 20:20:01,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 20:20:01,777 INFO L175 Difference]: Start difference. First operand has 267 places, 264 transitions, 614 flow. Second operand 3 states and 738 transitions. [2022-11-18 20:20:01,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 281 transitions, 780 flow [2022-11-18 20:20:01,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 281 transitions, 754 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:20:01,787 INFO L231 Difference]: Finished difference. Result has 269 places, 272 transitions, 686 flow [2022-11-18 20:20:01,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=686, PETRI_PLACES=269, PETRI_TRANSITIONS=272} [2022-11-18 20:20:01,788 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 8 predicate places. [2022-11-18 20:20:01,788 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 272 transitions, 686 flow [2022-11-18 20:20:01,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states 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 20:20:01,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:01,789 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] [2022-11-18 20:20:01,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:02,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:20:02,001 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-18 20:20:02,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:02,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1380661690, now seen corresponding path program 1 times [2022-11-18 20:20:02,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:02,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378453260] [2022-11-18 20:20:02,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:02,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:02,088 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 20:20:02,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:02,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378453260] [2022-11-18 20:20:02,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378453260] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:02,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756792572] [2022-11-18 20:20:02,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:02,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:02,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:02,090 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:02,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:20:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:02,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:20:02,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:02,242 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 20:20:02,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:02,297 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 20:20:02,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756792572] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:02,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:02,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:20:02,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734194135] [2022-11-18 20:20:02,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:02,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:20:02,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:02,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:20:02,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:20:02,304 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 280 [2022-11-18 20:20:02,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 272 transitions, 686 flow. Second operand has 10 states, 10 states have (on average 244.3) internal successors, (2443), 10 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states 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 20:20:02,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:02,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 280 [2022-11-18 20:20:02,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:04,411 INFO L130 PetriNetUnfolder]: 542/11427 cut-off events. [2022-11-18 20:20:04,411 INFO L131 PetriNetUnfolder]: For 1125/1334 co-relation queries the response was YES. [2022-11-18 20:20:04,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13400 conditions, 11427 events. 542/11427 cut-off events. For 1125/1334 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 149470 event pairs, 162 based on Foata normal form. 15/10292 useless extension candidates. Maximal degree in co-relation 13390. Up to 682 conditions per place. [2022-11-18 20:20:04,590 INFO L137 encePairwiseOnDemand]: 274/280 looper letters, 16 selfloop transitions, 9 changer transitions 0/282 dead transitions. [2022-11-18 20:20:04,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 282 transitions, 758 flow [2022-11-18 20:20:04,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:20:04,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:20:04,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2205 transitions. [2022-11-18 20:20:04,597 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-11-18 20:20:04,597 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2205 transitions. [2022-11-18 20:20:04,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2205 transitions. [2022-11-18 20:20:04,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:04,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2205 transitions. [2022-11-18 20:20:04,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states 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 20:20:04,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 280.0) internal successors, (2800), 10 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states 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 20:20:04,613 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 280.0) internal successors, (2800), 10 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states 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 20:20:04,613 INFO L175 Difference]: Start difference. First operand has 269 places, 272 transitions, 686 flow. Second operand 9 states and 2205 transitions. [2022-11-18 20:20:04,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 282 transitions, 758 flow [2022-11-18 20:20:04,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 282 transitions, 738 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:20:04,624 INFO L231 Difference]: Finished difference. Result has 278 places, 278 transitions, 716 flow [2022-11-18 20:20:04,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=716, PETRI_PLACES=278, PETRI_TRANSITIONS=278} [2022-11-18 20:20:04,625 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 17 predicate places. [2022-11-18 20:20:04,625 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 278 transitions, 716 flow [2022-11-18 20:20:04,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 244.3) internal successors, (2443), 10 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states 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 20:20:04,627 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:04,627 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] [2022-11-18 20:20:04,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:04,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff50fac9-ae55-4046-a594-410189f8117d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:04,833 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-18 20:20:04,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:04,834 INFO L85 PathProgramCache]: Analyzing trace with hash -410448267, now seen corresponding path program 1 times [2022-11-18 20:20:04,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:04,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55879386] [2022-11-18 20:20:04,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:04,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:04,891 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 20:20:04,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:04,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55879386] [2022-11-18 20:20:04,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55879386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:04,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:04,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:20:04,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069791964] [2022-11-18 20:20:04,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:04,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:20:04,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:04,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:20:04,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:20:04,896 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 280 [2022-11-18 20:20:04,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 278 transitions, 716 flow. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states 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 20:20:04,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:04,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 280 [2022-11-18 20:20:04,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand