./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-nondet/nondet-array-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a 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_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/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_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-nondet/nondet-array-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/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_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/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 2796c466e7d8363340777400f1e90c0fc7eb53096f49ded0fb8aa6814bf1ef21 --- 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 19:52:28,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:52:28,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:52:28,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:52:28,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:52:28,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:52:28,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:52:28,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:52:28,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:52:28,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:52:28,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:52:28,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:52:28,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:52:28,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:52:28,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:52:28,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:52:28,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:52:28,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:52:28,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:52:28,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:52:28,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:52:28,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:52:28,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:52:28,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:52:28,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:52:28,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:52:28,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:52:28,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:52:28,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:52:28,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:52:28,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:52:28,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:52:28,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:52:28,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:52:28,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:52:28,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:52:28,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:52:28,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:52:28,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:52:28,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:52:28,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:52:28,831 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 19:52:28,866 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:52:28,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:52:28,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:52:28,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:52:28,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:52:28,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:52:28,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:52:28,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:52:28,872 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:52:28,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:52:28,873 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 19:52:28,874 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 19:52:28,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:52:28,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 19:52:28,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:52:28,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:52:28,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:52:28,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:52:28,875 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 19:52:28,875 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 19:52:28,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:52:28,876 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:52:28,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:52:28,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:52:28,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:52:28,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:52:28,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:52:28,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:52:28,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:52:28,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:52:28,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:52:28,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:52:28,880 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:52:28,880 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:52:28,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:52:28,880 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_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2796c466e7d8363340777400f1e90c0fc7eb53096f49ded0fb8aa6814bf1ef21 [2022-11-02 19:52:29,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:52:29,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:52:29,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:52:29,214 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:52:29,215 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:52:29,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-nondet/nondet-array-2.i [2022-11-02 19:52:29,301 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/bin/uautomizer-Dbtcem3rbc/data/ddbc90cf1/c84fb4eb094741bb9b7dcd759a6288e7/FLAG1b5f7215d [2022-11-02 19:52:29,889 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:52:29,890 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/sv-benchmarks/c/pthread-nondet/nondet-array-2.i [2022-11-02 19:52:29,901 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/bin/uautomizer-Dbtcem3rbc/data/ddbc90cf1/c84fb4eb094741bb9b7dcd759a6288e7/FLAG1b5f7215d [2022-11-02 19:52:30,161 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/bin/uautomizer-Dbtcem3rbc/data/ddbc90cf1/c84fb4eb094741bb9b7dcd759a6288e7 [2022-11-02 19:52:30,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:52:30,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:52:30,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:52:30,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:52:30,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:52:30,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:52:30" (1/1) ... [2022-11-02 19:52:30,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@637438a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:30, skipping insertion in model container [2022-11-02 19:52:30,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:52:30" (1/1) ... [2022-11-02 19:52:30,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:52:30,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:52:30,592 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_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/sv-benchmarks/c/pthread-nondet/nondet-array-2.i[30035,30048] [2022-11-02 19:52:30,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:52:30,631 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:52:30,686 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_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/sv-benchmarks/c/pthread-nondet/nondet-array-2.i[30035,30048] [2022-11-02 19:52:30,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:52:30,743 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:52:30,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:30 WrapperNode [2022-11-02 19:52:30,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:52:30,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:52:30,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:52:30,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:52:30,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:30" (1/1) ... [2022-11-02 19:52:30,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:30" (1/1) ... [2022-11-02 19:52:30,821 INFO L138 Inliner]: procedures = 170, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2022-11-02 19:52:30,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:52:30,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:52:30,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:52:30,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:52:30,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:30" (1/1) ... [2022-11-02 19:52:30,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:30" (1/1) ... [2022-11-02 19:52:30,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:30" (1/1) ... [2022-11-02 19:52:30,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:30" (1/1) ... [2022-11-02 19:52:30,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:30" (1/1) ... [2022-11-02 19:52:30,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:30" (1/1) ... [2022-11-02 19:52:30,873 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:30" (1/1) ... [2022-11-02 19:52:30,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:30" (1/1) ... [2022-11-02 19:52:30,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:52:30,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:52:30,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:52:30,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:52:30,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:30" (1/1) ... [2022-11-02 19:52:30,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:52:30,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:30,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:52:30,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5ec5bef-72ee-4bc6-9789-facab5aa9ecb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:52:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-02 19:52:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 19:52:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 19:52:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2022-11-02 19:52:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2022-11-02 19:52:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 19:52:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 19:52:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 19:52:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 19:52:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:52:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:52:30,978 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 19:52:31,183 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:52:31,185 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:52:31,511 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:52:31,518 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:52:31,519 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 19:52:31,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:52:31 BoogieIcfgContainer [2022-11-02 19:52:31,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:52:31,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:52:31,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:52:31,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:52:31,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:52:30" (1/3) ... [2022-11-02 19:52:31,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194972b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:52:31, skipping insertion in model container [2022-11-02 19:52:31,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:30" (2/3) ... [2022-11-02 19:52:31,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194972b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:52:31, skipping insertion in model container [2022-11-02 19:52:31,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:52:31" (3/3) ... [2022-11-02 19:52:31,537 INFO L112 eAbstractionObserver]: Analyzing ICFG nondet-array-2.i [2022-11-02 19:52:31,549 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 19:52:31,559 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:52:31,560 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-02 19:52:31,560 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 19:52:31,635 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 19:52:31,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 115 transitions, 238 flow [2022-11-02 19:52:31,792 INFO L130 PetriNetUnfolder]: 12/164 cut-off events. [2022-11-02 19:52:31,793 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-02 19:52:31,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 164 events. 12/164 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 424 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2022-11-02 19:52:31,796 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 115 transitions, 238 flow [2022-11-02 19:52:31,801 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 115 transitions, 238 flow [2022-11-02 19:52:31,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:52:31,834 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;@155dae3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:52:31,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-02 19:52:31,863 INFO L130 PetriNetUnfolder]: 4/62 cut-off events. [2022-11-02 19:52:31,863 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 19:52:31,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:52:31,864 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] [2022-11-02 19:52:31,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-02 19:52:31,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:31,873 INFO L85 PathProgramCache]: Analyzing trace with hash -462468970, now seen corresponding path program 1 times [2022-11-02 19:52:31,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:31,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6946214] [2022-11-02 19:52:31,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:31,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:32,239 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 19:52:32,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:32,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6946214] [2022-11-02 19:52:32,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6946214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:32,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:32,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:52:32,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324334166] [2022-11-02 19:52:32,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:32,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:52:32,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:32,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:52:32,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:52:32,312 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 115 [2022-11-02 19:52:32,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 115 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 19:52:32,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:52:32,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 115 [2022-11-02 19:52:32,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:52:32,418 INFO L130 PetriNetUnfolder]: 3/152 cut-off events. [2022-11-02 19:52:32,418 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-02 19:52:32,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 152 events. 3/152 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 395 event pairs, 0 based on Foata normal form. 24/161 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2022-11-02 19:52:32,422 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 5 selfloop transitions, 2 changer transitions 1/108 dead transitions. [2022-11-02 19:52:32,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 108 transitions, 238 flow [2022-11-02 19:52:32,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:52:32,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 19:52:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2022-11-02 19:52:32,446 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2022-11-02 19:52:32,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2022-11-02 19:52:32,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2022-11-02 19:52:32,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:52:32,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2022-11-02 19:52:32,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 19:52:32,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 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 19:52:32,469 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 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 19:52:32,471 INFO L175 Difference]: Start difference. First operand has 111 places, 115 transitions, 238 flow. Second operand 3 states and 320 transitions. [2022-11-02 19:52:32,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 108 transitions, 238 flow [2022-11-02 19:52:32,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 108 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 19:52:32,488 INFO L231 Difference]: Finished difference. Result has 111 places, 107 transitions, 226 flow [2022-11-02 19:52:32,491 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=111, PETRI_TRANSITIONS=107} [2022-11-02 19:52:32,495 INFO L287 CegarLoopForPetriNet]: 111 programPoint places, 0 predicate places. [2022-11-02 19:52:32,495 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 107 transitions, 226 flow [2022-11-02 19:52:32,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 19:52:32,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:52:32,497 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] [2022-11-02 19:52:32,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:52:32,498 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-02 19:52:32,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:32,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2041175467, now seen corresponding path program 1 times [2022-11-02 19:52:32,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:32,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727422858] [2022-11-02 19:52:32,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:32,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:32,757 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 19:52:32,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:32,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727422858] [2022-11-02 19:52:32,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727422858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:32,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:32,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:52:32,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050775056] [2022-11-02 19:52:32,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:32,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:52:32,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:32,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:52:32,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:52:32,762 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 115 [2022-11-02 19:52:32,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 107 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 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 19:52:32,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:52:32,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 115 [2022-11-02 19:52:32,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:52:32,925 INFO L130 PetriNetUnfolder]: 2/168 cut-off events. [2022-11-02 19:52:32,925 INFO L131 PetriNetUnfolder]: For 3/21 co-relation queries the response was YES. [2022-11-02 19:52:32,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 168 events. 2/168 cut-off events. For 3/21 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 244 event pairs, 0 based on Foata normal form. 2/155 useless extension candidates. Maximal degree in co-relation 151. Up to 31 conditions per place. [2022-11-02 19:52:32,926 INFO L137 encePairwiseOnDemand]: 104/115 looper letters, 50 selfloop transitions, 7 changer transitions 6/134 dead transitions. [2022-11-02 19:52:32,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 134 transitions, 406 flow [2022-11-02 19:52:32,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:52:32,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 19:52:32,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2022-11-02 19:52:32,928 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7760869565217391 [2022-11-02 19:52:32,928 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2022-11-02 19:52:32,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2022-11-02 19:52:32,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:52:32,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2022-11-02 19:52:32,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 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 19:52:32,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 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 19:52:32,932 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 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 19:52:32,932 INFO L175 Difference]: Start difference. First operand has 111 places, 107 transitions, 226 flow. Second operand 4 states and 357 transitions. [2022-11-02 19:52:32,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 134 transitions, 406 flow [2022-11-02 19:52:32,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 134 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 19:52:32,936 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 270 flow [2022-11-02 19:52:32,937 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2022-11-02 19:52:32,937 INFO L287 CegarLoopForPetriNet]: 111 programPoint places, 3 predicate places. [2022-11-02 19:52:32,938 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 270 flow [2022-11-02 19:52:32,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 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 19:52:32,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:52:32,939 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] [2022-11-02 19:52:32,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 19:52:32,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-02 19:52:32,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:32,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1690400802, now seen corresponding path program 1 times [2022-11-02 19:52:32,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:32,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823281123] [2022-11-02 19:52:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:32,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 19:52:32,968 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 19:52:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 19:52:33,021 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 19:52:33,022 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 19:52:33,026 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-02 19:52:33,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-11-02 19:52:33,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-11-02 19:52:33,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-11-02 19:52:33,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-11-02 19:52:33,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2022-11-02 19:52:33,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-11-02 19:52:33,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-11-02 19:52:33,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-11-02 19:52:33,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 19:52:33,032 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 19:52:33,035 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 19:52:33,035 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 19:52:33,073 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 19:52:33,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 294 flow [2022-11-02 19:52:33,143 INFO L130 PetriNetUnfolder]: 23/293 cut-off events. [2022-11-02 19:52:33,143 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-11-02 19:52:33,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 293 events. 23/293 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 913 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 166. Up to 8 conditions per place. [2022-11-02 19:52:33,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 138 transitions, 294 flow [2022-11-02 19:52:33,147 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 138 transitions, 294 flow [2022-11-02 19:52:33,148 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:52:33,150 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;@155dae3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:52:33,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-02 19:52:33,156 INFO L130 PetriNetUnfolder]: 4/63 cut-off events. [2022-11-02 19:52:33,157 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 19:52:33,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:52:33,157 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] [2022-11-02 19:52:33,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-11-02 19:52:33,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:33,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1469495648, now seen corresponding path program 1 times [2022-11-02 19:52:33,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:33,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091057676] [2022-11-02 19:52:33,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:33,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:33,208 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 19:52:33,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:33,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091057676] [2022-11-02 19:52:33,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091057676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:33,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:33,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:52:33,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212195507] [2022-11-02 19:52:33,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:33,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:52:33,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:33,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:52:33,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:52:33,212 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 138 [2022-11-02 19:52:33,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 138 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 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 19:52:33,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:52:33,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 138 [2022-11-02 19:52:33,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:52:33,514 INFO L130 PetriNetUnfolder]: 76/987 cut-off events. [2022-11-02 19:52:33,514 INFO L131 PetriNetUnfolder]: For 121/141 co-relation queries the response was YES. [2022-11-02 19:52:33,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 987 events. 76/987 cut-off events. For 121/141 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 6318 event pairs, 21 based on Foata normal form. 243/1105 useless extension candidates. Maximal degree in co-relation 528. Up to 88 conditions per place. [2022-11-02 19:52:33,527 INFO L137 encePairwiseOnDemand]: 125/138 looper letters, 23 selfloop transitions, 6 changer transitions 1/145 dead transitions. [2022-11-02 19:52:33,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 145 transitions, 377 flow [2022-11-02 19:52:33,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:52:33,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 19:52:33,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2022-11-02 19:52:33,530 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9371980676328503 [2022-11-02 19:52:33,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2022-11-02 19:52:33,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2022-11-02 19:52:33,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:52:33,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2022-11-02 19:52:33,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 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 19:52:33,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 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 19:52:33,536 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 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 19:52:33,536 INFO L175 Difference]: Start difference. First operand has 135 places, 138 transitions, 294 flow. Second operand 3 states and 388 transitions. [2022-11-02 19:52:33,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 145 transitions, 377 flow [2022-11-02 19:52:33,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 145 transitions, 377 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 19:52:33,544 INFO L231 Difference]: Finished difference. Result has 138 places, 137 transitions, 332 flow [2022-11-02 19:52:33,545 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=138, PETRI_TRANSITIONS=137} [2022-11-02 19:52:33,548 INFO L287 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2022-11-02 19:52:33,548 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 137 transitions, 332 flow [2022-11-02 19:52:33,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 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 19:52:33,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:52:33,549 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] [2022-11-02 19:52:33,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 19:52:33,551 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-11-02 19:52:33,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:33,554 INFO L85 PathProgramCache]: Analyzing trace with hash 868079275, now seen corresponding path program 1 times [2022-11-02 19:52:33,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:33,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333736308] [2022-11-02 19:52:33,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:33,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:33,707 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 19:52:33,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:33,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333736308] [2022-11-02 19:52:33,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333736308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:33,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:33,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:52:33,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571891906] [2022-11-02 19:52:33,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:33,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:52:33,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:33,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:52:33,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:52:33,712 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 138 [2022-11-02 19:52:33,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 137 transitions, 332 flow. Second operand has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 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 19:52:33,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:52:33,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 138 [2022-11-02 19:52:33,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:52:34,007 INFO L130 PetriNetUnfolder]: 21/804 cut-off events. [2022-11-02 19:52:34,008 INFO L131 PetriNetUnfolder]: For 169/430 co-relation queries the response was YES. [2022-11-02 19:52:34,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1203 conditions, 804 events. 21/804 cut-off events. For 169/430 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4718 event pairs, 2 based on Foata normal form. 14/730 useless extension candidates. Maximal degree in co-relation 648. Up to 195 conditions per place. [2022-11-02 19:52:34,015 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 60 selfloop transitions, 8 changer transitions 3/170 dead transitions. [2022-11-02 19:52:34,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 170 transitions, 546 flow [2022-11-02 19:52:34,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:52:34,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 19:52:34,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2022-11-02 19:52:34,018 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8134057971014492 [2022-11-02 19:52:34,018 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2022-11-02 19:52:34,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2022-11-02 19:52:34,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:52:34,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2022-11-02 19:52:34,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 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 19:52:34,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 19:52:34,021 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 19:52:34,022 INFO L175 Difference]: Start difference. First operand has 138 places, 137 transitions, 332 flow. Second operand 4 states and 449 transitions. [2022-11-02 19:52:34,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 170 transitions, 546 flow [2022-11-02 19:52:34,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 170 transitions, 534 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 19:52:34,031 INFO L231 Difference]: Finished difference. Result has 141 places, 143 transitions, 382 flow [2022-11-02 19:52:34,032 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=382, PETRI_PLACES=141, PETRI_TRANSITIONS=143} [2022-11-02 19:52:34,033 INFO L287 CegarLoopForPetriNet]: 135 programPoint places, 6 predicate places. [2022-11-02 19:52:34,034 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 143 transitions, 382 flow [2022-11-02 19:52:34,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 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 19:52:34,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:52:34,034 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] [2022-11-02 19:52:34,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 19:52:34,035 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-11-02 19:52:34,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:34,035 INFO L85 PathProgramCache]: Analyzing trace with hash 199791653, now seen corresponding path program 1 times [2022-11-02 19:52:34,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:34,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926850099] [2022-11-02 19:52:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:34,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:34,514 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 19:52:34,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:34,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926850099] [2022-11-02 19:52:34,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926850099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:34,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:34,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:52:34,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216701175] [2022-11-02 19:52:34,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:34,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:52:34,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:34,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:52:34,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:52:34,519 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 138 [2022-11-02 19:52:34,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 143 transitions, 382 flow. Second operand has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 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) [2022-11-02 19:52:34,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:52:34,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 138 [2022-11-02 19:52:34,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:52:36,718 INFO L130 PetriNetUnfolder]: 3927/11366 cut-off events. [2022-11-02 19:52:36,718 INFO L131 PetriNetUnfolder]: For 391/406 co-relation queries the response was YES. [2022-11-02 19:52:36,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19467 conditions, 11366 events. 3927/11366 cut-off events. For 391/406 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 105184 event pairs, 1618 based on Foata normal form. 0/9959 useless extension candidates. Maximal degree in co-relation 11181. Up to 4733 conditions per place. [2022-11-02 19:52:36,807 INFO L137 encePairwiseOnDemand]: 119/138 looper letters, 95 selfloop transitions, 48 changer transitions 0/248 dead transitions. [2022-11-02 19:52:36,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 248 transitions, 910 flow [2022-11-02 19:52:36,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:52:36,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 19:52:36,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 708 transitions. [2022-11-02 19:52:36,810 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.855072463768116 [2022-11-02 19:52:36,811 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 708 transitions. [2022-11-02 19:52:36,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 708 transitions. [2022-11-02 19:52:36,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:52:36,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 708 transitions. [2022-11-02 19:52:36,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 19:52:36,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:36,817 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:36,817 INFO L175 Difference]: Start difference. First operand has 141 places, 143 transitions, 382 flow. Second operand 6 states and 708 transitions. [2022-11-02 19:52:36,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 248 transitions, 910 flow [2022-11-02 19:52:36,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 248 transitions, 908 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-02 19:52:36,828 INFO L231 Difference]: Finished difference. Result has 150 places, 192 transitions, 684 flow [2022-11-02 19:52:36,829 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=684, PETRI_PLACES=150, PETRI_TRANSITIONS=192} [2022-11-02 19:52:36,829 INFO L287 CegarLoopForPetriNet]: 135 programPoint places, 15 predicate places. [2022-11-02 19:52:36,830 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 192 transitions, 684 flow [2022-11-02 19:52:36,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 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) [2022-11-02 19:52:36,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:52:36,831 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 19:52:36,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 19:52:36,831 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-11-02 19:52:36,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:36,832 INFO L85 PathProgramCache]: Analyzing trace with hash -329294290, now seen corresponding path program 1 times [2022-11-02 19:52:36,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:36,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949129185] [2022-11-02 19:52:36,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:36,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:37,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:52:37,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:37,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949129185] [2022-11-02 19:52:37,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949129185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:37,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:37,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:52:37,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805584478] [2022-11-02 19:52:37,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:37,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:52:37,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:37,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:52:37,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:52:37,273 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 138 [2022-11-02 19:52:37,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 192 transitions, 684 flow. Second operand has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 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 19:52:37,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:52:37,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 138 [2022-11-02 19:52:37,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:52:41,178 INFO L130 PetriNetUnfolder]: 7809/21143 cut-off events. [2022-11-02 19:52:41,179 INFO L131 PetriNetUnfolder]: For 10163/10331 co-relation queries the response was YES. [2022-11-02 19:52:41,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49556 conditions, 21143 events. 7809/21143 cut-off events. For 10163/10331 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 219541 event pairs, 3704 based on Foata normal form. 62/19238 useless extension candidates. Maximal degree in co-relation 43010. Up to 12399 conditions per place. [2022-11-02 19:52:41,376 INFO L137 encePairwiseOnDemand]: 123/138 looper letters, 120 selfloop transitions, 72 changer transitions 0/282 dead transitions. [2022-11-02 19:52:41,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 282 transitions, 1480 flow [2022-11-02 19:52:41,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:52:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 19:52:41,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 594 transitions. [2022-11-02 19:52:41,379 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.717391304347826 [2022-11-02 19:52:41,384 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 594 transitions. [2022-11-02 19:52:41,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 594 transitions. [2022-11-02 19:52:41,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:52:41,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 594 transitions. [2022-11-02 19:52:41,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 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 19:52:41,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:41,389 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:41,389 INFO L175 Difference]: Start difference. First operand has 150 places, 192 transitions, 684 flow. Second operand 6 states and 594 transitions. [2022-11-02 19:52:41,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 282 transitions, 1480 flow [2022-11-02 19:52:41,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 282 transitions, 1480 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 19:52:41,437 INFO L231 Difference]: Finished difference. Result has 160 places, 259 transitions, 1362 flow [2022-11-02 19:52:41,438 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1362, PETRI_PLACES=160, PETRI_TRANSITIONS=259} [2022-11-02 19:52:41,439 INFO L287 CegarLoopForPetriNet]: 135 programPoint places, 25 predicate places. [2022-11-02 19:52:41,439 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 259 transitions, 1362 flow [2022-11-02 19:52:41,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 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 19:52:41,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:52:41,442 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] [2022-11-02 19:52:41,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 19:52:41,442 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-11-02 19:52:41,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:41,443 INFO L85 PathProgramCache]: Analyzing trace with hash 202802194, now seen corresponding path program 1 times [2022-11-02 19:52:41,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:41,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398035417] [2022-11-02 19:52:41,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:41,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:41,507 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 19:52:41,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:41,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398035417] [2022-11-02 19:52:41,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398035417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:41,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:41,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:52:41,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994893742] [2022-11-02 19:52:41,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:41,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:52:41,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:41,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:52:41,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:52:41,516 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 138 [2022-11-02 19:52:41,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 259 transitions, 1362 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 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 19:52:41,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:52:41,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 138 [2022-11-02 19:52:41,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:52:43,245 INFO L130 PetriNetUnfolder]: 2447/9957 cut-off events. [2022-11-02 19:52:43,245 INFO L131 PetriNetUnfolder]: For 5004/5374 co-relation queries the response was YES. [2022-11-02 19:52:43,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22309 conditions, 9957 events. 2447/9957 cut-off events. For 5004/5374 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 105222 event pairs, 330 based on Foata normal form. 19/9129 useless extension candidates. Maximal degree in co-relation 19304. Up to 1784 conditions per place. [2022-11-02 19:52:43,332 INFO L137 encePairwiseOnDemand]: 132/138 looper letters, 29 selfloop transitions, 7 changer transitions 0/271 dead transitions. [2022-11-02 19:52:43,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 271 transitions, 1478 flow [2022-11-02 19:52:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:52:43,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 19:52:43,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2022-11-02 19:52:43,335 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8961352657004831 [2022-11-02 19:52:43,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2022-11-02 19:52:43,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2022-11-02 19:52:43,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:52:43,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2022-11-02 19:52:43,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 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 19:52:43,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 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 19:52:43,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 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 19:52:43,338 INFO L175 Difference]: Start difference. First operand has 160 places, 259 transitions, 1362 flow. Second operand 3 states and 371 transitions. [2022-11-02 19:52:43,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 271 transitions, 1478 flow [2022-11-02 19:52:43,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 271 transitions, 1454 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-11-02 19:52:43,375 INFO L231 Difference]: Finished difference. Result has 164 places, 264 transitions, 1394 flow [2022-11-02 19:52:43,375 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1394, PETRI_PLACES=164, PETRI_TRANSITIONS=264} [2022-11-02 19:52:43,376 INFO L287 CegarLoopForPetriNet]: 135 programPoint places, 29 predicate places. [2022-11-02 19:52:43,376 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 264 transitions, 1394 flow [2022-11-02 19:52:43,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 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 19:52:43,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:52:43,377 INFO L208 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] [2022-11-02 19:52:43,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 19:52:43,378 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-11-02 19:52:43,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:43,378 INFO L85 PathProgramCache]: Analyzing trace with hash 707062480, now seen corresponding path program 1 times [2022-11-02 19:52:43,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:43,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291874066] [2022-11-02 19:52:43,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:43,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 19:52:43,406 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 19:52:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 19:52:43,442 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 19:52:43,442 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 19:52:43,442 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2022-11-02 19:52:43,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2022-11-02 19:52:43,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2022-11-02 19:52:43,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2022-11-02 19:52:43,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2022-11-02 19:52:43,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2022-11-02 19:52:43,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2022-11-02 19:52:43,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2022-11-02 19:52:43,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2022-11-02 19:52:43,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2022-11-02 19:52:43,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2022-11-02 19:52:43,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2022-11-02 19:52:43,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 19:52:43,447 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-02 19:52:43,454 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 19:52:43,454 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 19:52:43,492 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 19:52:43,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 161 transitions, 352 flow [2022-11-02 19:52:43,557 INFO L130 PetriNetUnfolder]: 45/519 cut-off events. [2022-11-02 19:52:43,557 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2022-11-02 19:52:43,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 519 events. 45/519 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1971 event pairs, 1 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2022-11-02 19:52:43,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 161 transitions, 352 flow [2022-11-02 19:52:43,565 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 161 transitions, 352 flow [2022-11-02 19:52:43,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:52:43,571 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;@155dae3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:52:43,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-02 19:52:43,577 INFO L130 PetriNetUnfolder]: 4/64 cut-off events. [2022-11-02 19:52:43,577 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 19:52:43,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:52:43,578 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] [2022-11-02 19:52:43,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-02 19:52:43,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:43,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1928681673, now seen corresponding path program 1 times [2022-11-02 19:52:43,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:43,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750413490] [2022-11-02 19:52:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:43,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:43,606 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 19:52:43,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:43,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750413490] [2022-11-02 19:52:43,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750413490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:43,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:43,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:52:43,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340244217] [2022-11-02 19:52:43,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:43,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:52:43,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:43,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:52:43,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:52:43,610 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 161 [2022-11-02 19:52:43,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 161 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 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 19:52:43,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:52:43,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 161 [2022-11-02 19:52:43,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:52:44,967 INFO L130 PetriNetUnfolder]: 1329/8445 cut-off events. [2022-11-02 19:52:44,967 INFO L131 PetriNetUnfolder]: For 1500/1807 co-relation queries the response was YES. [2022-11-02 19:52:45,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10980 conditions, 8445 events. 1329/8445 cut-off events. For 1500/1807 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 96738 event pairs, 536 based on Foata normal form. 2381/9599 useless extension candidates. Maximal degree in co-relation 7974. Up to 1145 conditions per place. [2022-11-02 19:52:45,098 INFO L137 encePairwiseOnDemand]: 144/161 looper letters, 35 selfloop transitions, 9 changer transitions 1/175 dead transitions. [2022-11-02 19:52:45,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 175 transitions, 489 flow [2022-11-02 19:52:45,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:52:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 19:52:45,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2022-11-02 19:52:45,100 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9296066252587992 [2022-11-02 19:52:45,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2022-11-02 19:52:45,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2022-11-02 19:52:45,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:52:45,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2022-11-02 19:52:45,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 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 19:52:45,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 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 19:52:45,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 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 19:52:45,105 INFO L175 Difference]: Start difference. First operand has 159 places, 161 transitions, 352 flow. Second operand 3 states and 449 transitions. [2022-11-02 19:52:45,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 175 transitions, 489 flow [2022-11-02 19:52:45,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 175 transitions, 489 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 19:52:45,110 INFO L231 Difference]: Finished difference. Result has 162 places, 163 transitions, 416 flow [2022-11-02 19:52:45,110 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=416, PETRI_PLACES=162, PETRI_TRANSITIONS=163} [2022-11-02 19:52:45,113 INFO L287 CegarLoopForPetriNet]: 159 programPoint places, 3 predicate places. [2022-11-02 19:52:45,113 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 163 transitions, 416 flow [2022-11-02 19:52:45,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 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 19:52:45,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:52:45,114 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] [2022-11-02 19:52:45,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 19:52:45,115 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-02 19:52:45,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:45,116 INFO L85 PathProgramCache]: Analyzing trace with hash -500532949, now seen corresponding path program 1 times [2022-11-02 19:52:45,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:45,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664252615] [2022-11-02 19:52:45,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:45,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:45,223 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 19:52:45,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:45,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664252615] [2022-11-02 19:52:45,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664252615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:45,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:45,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:52:45,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336017786] [2022-11-02 19:52:45,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:45,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:52:45,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:45,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:52:45,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:52:45,228 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 161 [2022-11-02 19:52:45,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 163 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 117.8) internal successors, (589), 5 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) [2022-11-02 19:52:45,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:52:45,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 161 [2022-11-02 19:52:45,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:52:46,152 INFO L130 PetriNetUnfolder]: 200/4517 cut-off events. [2022-11-02 19:52:46,152 INFO L131 PetriNetUnfolder]: For 799/2366 co-relation queries the response was YES. [2022-11-02 19:52:46,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6824 conditions, 4517 events. 200/4517 cut-off events. For 799/2366 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 47234 event pairs, 48 based on Foata normal form. 73/4074 useless extension candidates. Maximal degree in co-relation 4479. Up to 1166 conditions per place. [2022-11-02 19:52:46,196 INFO L137 encePairwiseOnDemand]: 150/161 looper letters, 63 selfloop transitions, 8 changer transitions 3/197 dead transitions. [2022-11-02 19:52:46,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 197 transitions, 641 flow [2022-11-02 19:52:46,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:52:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 19:52:46,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 536 transitions. [2022-11-02 19:52:46,202 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8322981366459627 [2022-11-02 19:52:46,203 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 536 transitions. [2022-11-02 19:52:46,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 536 transitions. [2022-11-02 19:52:46,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:52:46,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 536 transitions. [2022-11-02 19:52:46,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 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 19:52:46,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 0 states have call successors, (0), 0 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 19:52:46,215 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 0 states have call successors, (0), 0 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 19:52:46,215 INFO L175 Difference]: Start difference. First operand has 162 places, 163 transitions, 416 flow. Second operand 4 states and 536 transitions. [2022-11-02 19:52:46,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 197 transitions, 641 flow [2022-11-02 19:52:46,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 197 transitions, 623 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 19:52:46,221 INFO L231 Difference]: Finished difference. Result has 165 places, 169 transitions, 460 flow [2022-11-02 19:52:46,221 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=460, PETRI_PLACES=165, PETRI_TRANSITIONS=169} [2022-11-02 19:52:46,222 INFO L287 CegarLoopForPetriNet]: 159 programPoint places, 6 predicate places. [2022-11-02 19:52:46,223 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 169 transitions, 460 flow [2022-11-02 19:52:46,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.8) internal successors, (589), 5 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) [2022-11-02 19:52:46,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:52:46,223 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] [2022-11-02 19:52:46,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 19:52:46,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-02 19:52:46,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:46,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1854835780, now seen corresponding path program 1 times [2022-11-02 19:52:46,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:46,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508224602] [2022-11-02 19:52:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:46,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:46,537 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 19:52:46,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:46,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508224602] [2022-11-02 19:52:46,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508224602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:46,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:46,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:52:46,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188616769] [2022-11-02 19:52:46,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:46,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:52:46,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:46,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:52:46,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:52:46,540 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 161 [2022-11-02 19:52:46,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 169 transitions, 460 flow. Second operand has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 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) [2022-11-02 19:52:46,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:52:46,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 161 [2022-11-02 19:52:46,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:53:24,630 INFO L130 PetriNetUnfolder]: 97664/232670 cut-off events. [2022-11-02 19:53:24,630 INFO L131 PetriNetUnfolder]: For 8835/8925 co-relation queries the response was YES. [2022-11-02 19:53:25,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403151 conditions, 232670 events. 97664/232670 cut-off events. For 8835/8925 co-relation queries the response was YES. Maximal size of possible extension queue 3460. Compared 3094136 event pairs, 44056 based on Foata normal form. 0/203278 useless extension candidates. Maximal degree in co-relation 348336. Up to 94224 conditions per place. [2022-11-02 19:53:26,197 INFO L137 encePairwiseOnDemand]: 138/161 looper letters, 130 selfloop transitions, 58 changer transitions 0/310 dead transitions. [2022-11-02 19:53:26,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 310 transitions, 1190 flow [2022-11-02 19:53:26,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:53:26,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 19:53:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 837 transitions. [2022-11-02 19:53:26,201 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8664596273291926 [2022-11-02 19:53:26,202 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 837 transitions. [2022-11-02 19:53:26,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 837 transitions. [2022-11-02 19:53:26,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:53:26,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 837 transitions. [2022-11-02 19:53:26,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 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 19:53:26,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 161.0) internal successors, (1127), 7 states have internal predecessors, (1127), 0 states have call successors, (0), 0 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 19:53:26,209 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 161.0) internal successors, (1127), 7 states have internal predecessors, (1127), 0 states have call successors, (0), 0 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 19:53:26,209 INFO L175 Difference]: Start difference. First operand has 165 places, 169 transitions, 460 flow. Second operand 6 states and 837 transitions. [2022-11-02 19:53:26,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 310 transitions, 1190 flow [2022-11-02 19:53:26,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 310 transitions, 1188 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-02 19:53:26,414 INFO L231 Difference]: Finished difference. Result has 174 places, 229 transitions, 832 flow [2022-11-02 19:53:26,415 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=832, PETRI_PLACES=174, PETRI_TRANSITIONS=229} [2022-11-02 19:53:26,415 INFO L287 CegarLoopForPetriNet]: 159 programPoint places, 15 predicate places. [2022-11-02 19:53:26,416 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 229 transitions, 832 flow [2022-11-02 19:53:26,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 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) [2022-11-02 19:53:26,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:26,416 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 19:53:26,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 19:53:26,417 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-02 19:53:26,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:26,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1530286941, now seen corresponding path program 1 times [2022-11-02 19:53:26,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:26,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169057295] [2022-11-02 19:53:26,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:26,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:26,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:53:26,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:26,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169057295] [2022-11-02 19:53:26,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169057295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:26,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:26,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:53:26,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952521008] [2022-11-02 19:53:26,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:26,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:53:26,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:26,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:53:26,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:53:26,853 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 161 [2022-11-02 19:53:26,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 229 transitions, 832 flow. Second operand has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 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 19:53:26,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:53:26,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 161 [2022-11-02 19:53:26,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand