./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_303b09dc-5ff8-4744-8f86-77ba73a9ef20/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_303b09dc-5ff8-4744-8f86-77ba73a9ef20/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_303b09dc-5ff8-4744-8f86-77ba73a9ef20/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_303b09dc-5ff8-4744-8f86-77ba73a9ef20/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_303b09dc-5ff8-4744-8f86-77ba73a9ef20/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_303b09dc-5ff8-4744-8f86-77ba73a9ef20/bin/uautomizer-Dbtcem3rbc --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 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b --- 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-5e519f3 [2022-11-02 20:48:07,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:48:07,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:48:07,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:48:07,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:48:07,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:48:07,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:48:07,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:48:07,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:48:07,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:48:07,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:48:07,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:48:07,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:48:07,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:48:07,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:48:07,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:48:07,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:48:07,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:48:07,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:48:07,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:48:07,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:48:07,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:48:07,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:48:07,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:48:07,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:48:07,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:48:07,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:48:07,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:48:07,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:48:07,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:48:07,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:48:07,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:48:07,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:48:07,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:48:07,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:48:07,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:48:07,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:48:07,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:48:07,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:48:07,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:48:07,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:48:07,322 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_303b09dc-5ff8-4744-8f86-77ba73a9ef20/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:48:07,372 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:48:07,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:48:07,379 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:48:07,380 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:48:07,382 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:48:07,382 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:48:07,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:48:07,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:48:07,384 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:48:07,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:48:07,385 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:48:07,386 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:48:07,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:48:07,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:48:07,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:48:07,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:48:07,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:48:07,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:48:07,388 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:48:07,388 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:48:07,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:48:07,388 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:48:07,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:48:07,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:48:07,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:48:07,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:48:07,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:48:07,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:48:07,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:48:07,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:48:07,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:48:07,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:48:07,392 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:48:07,392 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:48:07,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:48:07,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_303b09dc-5ff8-4744-8f86-77ba73a9ef20/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_303b09dc-5ff8-4744-8f86-77ba73a9ef20/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b [2022-11-02 20:48:07,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:48:07,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:48:07,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:48:07,786 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:48:07,790 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:48:07,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_303b09dc-5ff8-4744-8f86-77ba73a9ef20/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2022-11-02 20:48:07,872 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_303b09dc-5ff8-4744-8f86-77ba73a9ef20/bin/uautomizer-Dbtcem3rbc/data/d2760be96/9f6dbb979bff44278ffffde1157455b1/FLAG9f9bd41fe [2022-11-02 20:48:08,455 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:48:08,460 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_303b09dc-5ff8-4744-8f86-77ba73a9ef20/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2022-11-02 20:48:08,476 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_303b09dc-5ff8-4744-8f86-77ba73a9ef20/bin/uautomizer-Dbtcem3rbc/data/d2760be96/9f6dbb979bff44278ffffde1157455b1/FLAG9f9bd41fe [2022-11-02 20:48:08,684 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_303b09dc-5ff8-4744-8f86-77ba73a9ef20/bin/uautomizer-Dbtcem3rbc/data/d2760be96/9f6dbb979bff44278ffffde1157455b1 [2022-11-02 20:48:08,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:48:08,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:48:08,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:48:08,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:48:08,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:48:08,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:48:08" (1/1) ... [2022-11-02 20:48:08,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c4e6c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:08, skipping insertion in model container [2022-11-02 20:48:08,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:48:08" (1/1) ... [2022-11-02 20:48:08,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:48:08,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:48:09,242 WARN L230 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_303b09dc-5ff8-4744-8f86-77ba73a9ef20/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2022-11-02 20:48:09,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:48:09,308 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:48:09,341 WARN L230 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_303b09dc-5ff8-4744-8f86-77ba73a9ef20/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2022-11-02 20:48:09,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:48:09,383 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:48:09,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:09 WrapperNode [2022-11-02 20:48:09,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:48:09,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:48:09,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:48:09,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:48:09,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:09" (1/1) ... [2022-11-02 20:48:09,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:09" (1/1) ... [2022-11-02 20:48:09,453 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 238 [2022-11-02 20:48:09,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:48:09,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:48:09,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:48:09,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:48:09,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:09" (1/1) ... [2022-11-02 20:48:09,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:09" (1/1) ... [2022-11-02 20:48:09,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:09" (1/1) ... [2022-11-02 20:48:09,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:09" (1/1) ... [2022-11-02 20:48:09,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:09" (1/1) ... [2022-11-02 20:48:09,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:09" (1/1) ... [2022-11-02 20:48:09,495 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:09" (1/1) ... [2022-11-02 20:48:09,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:09" (1/1) ... [2022-11-02 20:48:09,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:48:09,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:48:09,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:48:09,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:48:09,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:09" (1/1) ... [2022-11-02 20:48:09,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:48:09,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_303b09dc-5ff8-4744-8f86-77ba73a9ef20/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:48:09,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_303b09dc-5ff8-4744-8f86-77ba73a9ef20/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:48:09,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_303b09dc-5ff8-4744-8f86-77ba73a9ef20/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:48:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:48:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-02 20:48:09,587 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-02 20:48:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:48:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:48:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:48:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:48:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-02 20:48:09,588 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-02 20:48:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:48:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:48:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:48:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:48:09,591 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:48:09,833 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:48:09,835 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:48:10,342 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:48:10,358 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:48:10,359 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-11-02 20:48:10,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:48:10 BoogieIcfgContainer [2022-11-02 20:48:10,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:48:10,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:48:10,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:48:10,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:48:10,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:48:08" (1/3) ... [2022-11-02 20:48:10,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392e5507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:48:10, skipping insertion in model container [2022-11-02 20:48:10,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:09" (2/3) ... [2022-11-02 20:48:10,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392e5507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:48:10, skipping insertion in model container [2022-11-02 20:48:10,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:48:10" (3/3) ... [2022-11-02 20:48:10,372 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2022-11-02 20:48:10,396 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:48:10,406 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:48:10,406 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-02 20:48:10,407 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:48:10,501 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-02 20:48:10,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 258 transitions, 538 flow [2022-11-02 20:48:10,707 INFO L130 PetriNetUnfolder]: 58/476 cut-off events. [2022-11-02 20:48:10,707 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 20:48:10,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 476 events. 58/476 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2340 event pairs, 0 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 257. Up to 8 conditions per place. [2022-11-02 20:48:10,724 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 258 transitions, 538 flow [2022-11-02 20:48:10,735 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 258 transitions, 538 flow [2022-11-02 20:48:10,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:48:10,757 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;@246752e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:48:10,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-02 20:48:10,800 INFO L130 PetriNetUnfolder]: 5/94 cut-off events. [2022-11-02 20:48:10,800 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:48:10,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:10,801 INFO L208 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] [2022-11-02 20:48:10,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 20:48:10,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:10,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1471706223, now seen corresponding path program 1 times [2022-11-02 20:48:10,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:10,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725323766] [2022-11-02 20:48:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:10,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:11,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:11,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:11,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725323766] [2022-11-02 20:48:11,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725323766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:11,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:11,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:48:11,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246017302] [2022-11-02 20:48:11,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:11,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:48:11,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:11,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:48:11,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:48:11,104 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 258 [2022-11-02 20:48:11,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 258 transitions, 538 flow. Second operand has 2 states, 2 states have (on average 225.0) internal successors, (450), 2 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:11,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:11,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 258 [2022-11-02 20:48:11,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:11,287 INFO L130 PetriNetUnfolder]: 11/426 cut-off events. [2022-11-02 20:48:11,287 INFO L131 PetriNetUnfolder]: For 34/45 co-relation queries the response was YES. [2022-11-02 20:48:11,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 426 events. 11/426 cut-off events. For 34/45 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2060 event pairs, 0 based on Foata normal form. 95/477 useless extension candidates. Maximal degree in co-relation 229. Up to 12 conditions per place. [2022-11-02 20:48:11,296 INFO L137 encePairwiseOnDemand]: 232/258 looper letters, 6 selfloop transitions, 0 changer transitions 0/230 dead transitions. [2022-11-02 20:48:11,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 230 transitions, 494 flow [2022-11-02 20:48:11,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:48:11,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:48:11,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 480 transitions. [2022-11-02 20:48:11,324 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9302325581395349 [2022-11-02 20:48:11,324 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 480 transitions. [2022-11-02 20:48:11,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 480 transitions. [2022-11-02 20:48:11,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:11,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 480 transitions. [2022-11-02 20:48:11,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 240.0) internal successors, (480), 2 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) [2022-11-02 20:48:11,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:11,348 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:11,350 INFO L175 Difference]: Start difference. First operand has 231 places, 258 transitions, 538 flow. Second operand 2 states and 480 transitions. [2022-11-02 20:48:11,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 230 transitions, 494 flow [2022-11-02 20:48:11,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 230 transitions, 494 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:48:11,366 INFO L231 Difference]: Finished difference. Result has 230 places, 230 transitions, 482 flow [2022-11-02 20:48:11,369 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=482, PETRI_PLACES=230, PETRI_TRANSITIONS=230} [2022-11-02 20:48:11,375 INFO L287 CegarLoopForPetriNet]: 231 programPoint places, -1 predicate places. [2022-11-02 20:48:11,375 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 230 transitions, 482 flow [2022-11-02 20:48:11,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 225.0) internal successors, (450), 2 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:11,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:11,376 INFO L208 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] [2022-11-02 20:48:11,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:48:11,376 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 20:48:11,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:11,377 INFO L85 PathProgramCache]: Analyzing trace with hash -206665521, now seen corresponding path program 1 times [2022-11-02 20:48:11,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:11,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660520370] [2022-11-02 20:48:11,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:11,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:11,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:11,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:11,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660520370] [2022-11-02 20:48:11,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660520370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:11,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:11,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:48:11,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627740078] [2022-11-02 20:48:11,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:11,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:48:11,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:11,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:48:11,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:48:11,657 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 258 [2022-11-02 20:48:11,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 230 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:11,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:11,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 258 [2022-11-02 20:48:11,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:11,763 INFO L130 PetriNetUnfolder]: 8/341 cut-off events. [2022-11-02 20:48:11,763 INFO L131 PetriNetUnfolder]: For 34/56 co-relation queries the response was YES. [2022-11-02 20:48:11,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 341 events. 8/341 cut-off events. For 34/56 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1232 event pairs, 0 based on Foata normal form. 2/310 useless extension candidates. Maximal degree in co-relation 374. Up to 15 conditions per place. [2022-11-02 20:48:11,769 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 13 selfloop transitions, 2 changer transitions 0/232 dead transitions. [2022-11-02 20:48:11,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 232 transitions, 516 flow [2022-11-02 20:48:11,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:48:11,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:48:11,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 667 transitions. [2022-11-02 20:48:11,773 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8617571059431525 [2022-11-02 20:48:11,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 667 transitions. [2022-11-02 20:48:11,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 667 transitions. [2022-11-02 20:48:11,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:11,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 667 transitions. [2022-11-02 20:48:11,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:11,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:11,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:11,781 INFO L175 Difference]: Start difference. First operand has 230 places, 230 transitions, 482 flow. Second operand 3 states and 667 transitions. [2022-11-02 20:48:11,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 232 transitions, 516 flow [2022-11-02 20:48:11,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 232 transitions, 516 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:48:11,794 INFO L231 Difference]: Finished difference. Result has 233 places, 230 transitions, 490 flow [2022-11-02 20:48:11,794 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=490, PETRI_PLACES=233, PETRI_TRANSITIONS=230} [2022-11-02 20:48:11,795 INFO L287 CegarLoopForPetriNet]: 231 programPoint places, 2 predicate places. [2022-11-02 20:48:11,796 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 230 transitions, 490 flow [2022-11-02 20:48:11,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:11,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:11,798 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:11,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:48:11,798 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 20:48:11,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:11,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1504860397, now seen corresponding path program 1 times [2022-11-02 20:48:11,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:11,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124688001] [2022-11-02 20:48:11,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:11,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:48:11,861 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:48:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:48:11,929 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:48:11,930 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:48:11,931 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2022-11-02 20:48:11,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2022-11-02 20:48:11,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2022-11-02 20:48:11,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2022-11-02 20:48:11,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2022-11-02 20:48:11,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2022-11-02 20:48:11,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2022-11-02 20:48:11,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2022-11-02 20:48:11,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 24 remaining) [2022-11-02 20:48:11,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2022-11-02 20:48:11,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2022-11-02 20:48:11,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2022-11-02 20:48:11,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2022-11-02 20:48:11,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2022-11-02 20:48:11,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2022-11-02 20:48:11,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2022-11-02 20:48:11,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2022-11-02 20:48:11,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2022-11-02 20:48:11,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2022-11-02 20:48:11,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2022-11-02 20:48:11,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2022-11-02 20:48:11,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2022-11-02 20:48:11,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2022-11-02 20:48:11,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2022-11-02 20:48:11,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:48:11,949 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:48:11,953 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:48:11,954 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:48:12,064 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-02 20:48:12,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 414 transitions, 876 flow [2022-11-02 20:48:12,532 INFO L130 PetriNetUnfolder]: 197/1425 cut-off events. [2022-11-02 20:48:12,532 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-02 20:48:12,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1522 conditions, 1425 events. 197/1425 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9425 event pairs, 1 based on Foata normal form. 0/1169 useless extension candidates. Maximal degree in co-relation 859. Up to 32 conditions per place. [2022-11-02 20:48:12,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 363 places, 414 transitions, 876 flow [2022-11-02 20:48:12,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 363 places, 414 transitions, 876 flow [2022-11-02 20:48:12,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:48:12,605 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;@246752e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:48:12,606 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-11-02 20:48:12,656 INFO L130 PetriNetUnfolder]: 5/94 cut-off events. [2022-11-02 20:48:12,656 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:48:12,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:12,656 INFO L208 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] [2022-11-02 20:48:12,656 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-11-02 20:48:12,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:12,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1898254415, now seen corresponding path program 1 times [2022-11-02 20:48:12,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:12,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145759246] [2022-11-02 20:48:12,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:12,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:12,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:12,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145759246] [2022-11-02 20:48:12,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145759246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:12,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:12,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:48:12,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652820157] [2022-11-02 20:48:12,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:12,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:48:12,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:12,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:48:12,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:48:12,791 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 414 [2022-11-02 20:48:12,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 414 transitions, 876 flow. Second operand has 3 states, 3 states have (on average 344.0) internal successors, (1032), 3 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:12,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:12,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 414 [2022-11-02 20:48:12,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:13,318 INFO L130 PetriNetUnfolder]: 60/1125 cut-off events. [2022-11-02 20:48:13,319 INFO L131 PetriNetUnfolder]: For 243/398 co-relation queries the response was YES. [2022-11-02 20:48:13,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1300 conditions, 1125 events. 60/1125 cut-off events. For 243/398 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 7250 event pairs, 2 based on Foata normal form. 796/1800 useless extension candidates. Maximal degree in co-relation 781. Up to 80 conditions per place. [2022-11-02 20:48:13,359 INFO L137 encePairwiseOnDemand]: 363/414 looper letters, 21 selfloop transitions, 2 changer transitions 0/366 dead transitions. [2022-11-02 20:48:13,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 366 transitions, 826 flow [2022-11-02 20:48:13,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:48:13,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:48:13,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1113 transitions. [2022-11-02 20:48:13,364 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8961352657004831 [2022-11-02 20:48:13,365 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1113 transitions. [2022-11-02 20:48:13,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1113 transitions. [2022-11-02 20:48:13,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:13,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1113 transitions. [2022-11-02 20:48:13,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:13,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:13,411 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:13,411 INFO L175 Difference]: Start difference. First operand has 363 places, 414 transitions, 876 flow. Second operand 3 states and 1113 transitions. [2022-11-02 20:48:13,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 366 transitions, 826 flow [2022-11-02 20:48:13,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 366 transitions, 826 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:48:13,420 INFO L231 Difference]: Finished difference. Result has 362 places, 363 transitions, 784 flow [2022-11-02 20:48:13,426 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=784, PETRI_PLACES=362, PETRI_TRANSITIONS=363} [2022-11-02 20:48:13,431 INFO L287 CegarLoopForPetriNet]: 363 programPoint places, -1 predicate places. [2022-11-02 20:48:13,431 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 363 transitions, 784 flow [2022-11-02 20:48:13,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 344.0) internal successors, (1032), 3 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:13,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:13,432 INFO L208 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] [2022-11-02 20:48:13,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:48:13,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1_funErr4ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-11-02 20:48:13,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:13,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1811770177, now seen corresponding path program 1 times [2022-11-02 20:48:13,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:13,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781611756] [2022-11-02 20:48:13,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:13,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:13,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:13,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781611756] [2022-11-02 20:48:13,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781611756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:13,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:13,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:48:13,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186924871] [2022-11-02 20:48:13,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:13,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:48:13,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:13,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:48:13,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:48:13,533 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 414 [2022-11-02 20:48:13,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 363 transitions, 784 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:13,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:13,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 414 [2022-11-02 20:48:13,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand