./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a 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_dda81f88-c3da-4eda-aa08-fedd043777b5/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dda81f88-c3da-4eda-aa08-fedd043777b5/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dda81f88-c3da-4eda-aa08-fedd043777b5/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dda81f88-c3da-4eda-aa08-fedd043777b5/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dda81f88-c3da-4eda-aa08-fedd043777b5/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dda81f88-c3da-4eda-aa08-fedd043777b5/bin/uautomizer-ZsLfNo2U6R --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 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --- 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-38b53e6 [2022-11-25 17:09:30,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:09:30,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:09:31,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:09:31,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:09:31,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:09:31,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:09:31,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:09:31,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:09:31,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:09:31,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:09:31,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:09:31,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:09:31,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:09:31,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:09:31,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:09:31,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:09:31,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:09:31,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:09:31,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:09:31,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:09:31,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:09:31,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:09:31,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:09:31,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:09:31,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:09:31,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:09:31,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:09:31,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:09:31,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:09:31,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:09:31,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:09:31,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:09:31,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:09:31,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:09:31,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:09:31,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:09:31,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:09:31,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:09:31,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:09:31,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:09:31,051 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dda81f88-c3da-4eda-aa08-fedd043777b5/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 17:09:31,073 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:09:31,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:09:31,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:09:31,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:09:31,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:09:31,075 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:09:31,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:09:31,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:09:31,076 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:09:31,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:09:31,077 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:09:31,077 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:09:31,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:09:31,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:09:31,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:09:31,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:09:31,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:09:31,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:09:31,078 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 17:09:31,078 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:09:31,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:09:31,079 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:09:31,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:09:31,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:09:31,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:09:31,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:09:31,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:09:31,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:09:31,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:09:31,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:09:31,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:09:31,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:09:31,081 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:09:31,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:09:31,081 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:09:31,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:09:31,081 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dda81f88-c3da-4eda-aa08-fedd043777b5/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dda81f88-c3da-4eda-aa08-fedd043777b5/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2022-11-25 17:09:31,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:09:31,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:09:31,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:09:31,424 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:09:31,424 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:09:31,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dda81f88-c3da-4eda-aa08-fedd043777b5/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread/stack_longer-1.i [2022-11-25 17:09:34,619 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:09:34,926 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:09:34,939 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dda81f88-c3da-4eda-aa08-fedd043777b5/sv-benchmarks/c/pthread/stack_longer-1.i [2022-11-25 17:09:34,962 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dda81f88-c3da-4eda-aa08-fedd043777b5/bin/uautomizer-ZsLfNo2U6R/data/43caa1b63/3b2caeb97a7442d7868380b85d286274/FLAG3779e5014 [2022-11-25 17:09:34,984 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dda81f88-c3da-4eda-aa08-fedd043777b5/bin/uautomizer-ZsLfNo2U6R/data/43caa1b63/3b2caeb97a7442d7868380b85d286274 [2022-11-25 17:09:34,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:09:34,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:09:34,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:09:34,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:09:34,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:09:34,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:09:34" (1/1) ... [2022-11-25 17:09:34,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b4e0e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:34, skipping insertion in model container [2022-11-25 17:09:34,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:09:34" (1/1) ... [2022-11-25 17:09:35,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:09:35,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:09:35,538 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dda81f88-c3da-4eda-aa08-fedd043777b5/sv-benchmarks/c/pthread/stack_longer-1.i[41527,41540] [2022-11-25 17:09:35,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:09:35,594 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:09:35,654 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dda81f88-c3da-4eda-aa08-fedd043777b5/sv-benchmarks/c/pthread/stack_longer-1.i[41527,41540] [2022-11-25 17:09:35,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:09:35,729 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:09:35,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:35 WrapperNode [2022-11-25 17:09:35,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:09:35,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:09:35,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:09:35,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:09:35,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:35" (1/1) ... [2022-11-25 17:09:35,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:35" (1/1) ... [2022-11-25 17:09:35,816 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 203 [2022-11-25 17:09:35,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:09:35,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:09:35,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:09:35,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:09:35,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:35" (1/1) ... [2022-11-25 17:09:35,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:35" (1/1) ... [2022-11-25 17:09:35,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:35" (1/1) ... [2022-11-25 17:09:35,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:35" (1/1) ... [2022-11-25 17:09:35,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:35" (1/1) ... [2022-11-25 17:09:35,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:35" (1/1) ... [2022-11-25 17:09:35,874 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:35" (1/1) ... [2022-11-25 17:09:35,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:35" (1/1) ... [2022-11-25 17:09:35,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:09:35,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:09:35,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:09:35,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:09:35,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:35" (1/1) ... [2022-11-25 17:09:35,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:09:35,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dda81f88-c3da-4eda-aa08-fedd043777b5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:09:35,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dda81f88-c3da-4eda-aa08-fedd043777b5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:09:35,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dda81f88-c3da-4eda-aa08-fedd043777b5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:09:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-25 17:09:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-25 17:09:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-25 17:09:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-25 17:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:09:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:09:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:09:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:09:35,956 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:09:36,099 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:09:36,101 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:09:36,569 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:09:36,580 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:09:36,581 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 17:09:36,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:09:36 BoogieIcfgContainer [2022-11-25 17:09:36,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:09:36,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:09:36,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:09:36,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:09:36,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:09:34" (1/3) ... [2022-11-25 17:09:36,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2735161c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:09:36, skipping insertion in model container [2022-11-25 17:09:36,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:35" (2/3) ... [2022-11-25 17:09:36,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2735161c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:09:36, skipping insertion in model container [2022-11-25 17:09:36,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:09:36" (3/3) ... [2022-11-25 17:09:36,594 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2022-11-25 17:09:36,604 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:09:36,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:09:36,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-25 17:09:36,615 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:09:36,865 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:09:36,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 239 transitions, 494 flow [2022-11-25 17:09:37,090 INFO L130 PetriNetUnfolder]: 10/237 cut-off events. [2022-11-25 17:09:37,090 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:09:37,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 237 events. 10/237 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 584 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 191. Up to 3 conditions per place. [2022-11-25 17:09:37,102 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 239 transitions, 494 flow [2022-11-25 17:09:37,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 227 transitions, 463 flow [2022-11-25 17:09:37,122 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:09:37,140 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 227 transitions, 463 flow [2022-11-25 17:09:37,143 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 227 transitions, 463 flow [2022-11-25 17:09:37,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 227 transitions, 463 flow [2022-11-25 17:09:37,225 INFO L130 PetriNetUnfolder]: 10/227 cut-off events. [2022-11-25 17:09:37,225 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:09:37,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 227 events. 10/227 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 510 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 191. Up to 3 conditions per place. [2022-11-25 17:09:37,240 INFO L119 LiptonReduction]: Number of co-enabled transitions 20432 [2022-11-25 17:09:42,881 INFO L134 LiptonReduction]: Checked pairs total: 63443 [2022-11-25 17:09:42,886 INFO L136 LiptonReduction]: Total number of compositions: 165 [2022-11-25 17:09:42,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:09:42,927 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;@333024ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:09:42,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-11-25 17:09:42,933 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2022-11-25 17:09:42,933 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:09:42,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:42,935 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:09:42,936 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-11-25 17:09:42,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:42,942 INFO L85 PathProgramCache]: Analyzing trace with hash 669991813, now seen corresponding path program 1 times [2022-11-25 17:09:42,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:42,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800923263] [2022-11-25 17:09:42,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:42,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:43,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:43,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:43,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800923263] [2022-11-25 17:09:43,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800923263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:43,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:43,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:09:43,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671523993] [2022-11-25 17:09:43,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:43,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:09:43,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:43,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:09:43,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:09:43,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 404 [2022-11-25 17:09:43,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 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) [2022-11-25 17:09:43,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:43,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 404 [2022-11-25 17:09:43,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:44,201 INFO L130 PetriNetUnfolder]: 2223/4632 cut-off events. [2022-11-25 17:09:44,202 INFO L131 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-11-25 17:09:44,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8520 conditions, 4632 events. 2223/4632 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 29343 event pairs, 748 based on Foata normal form. 0/4221 useless extension candidates. Maximal degree in co-relation 7944. Up to 2632 conditions per place. [2022-11-25 17:09:44,239 INFO L137 encePairwiseOnDemand]: 383/404 looper letters, 90 selfloop transitions, 14 changer transitions 0/132 dead transitions. [2022-11-25 17:09:44,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 132 transitions, 487 flow [2022-11-25 17:09:44,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:09:44,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:09:44,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 736 transitions. [2022-11-25 17:09:44,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6072607260726073 [2022-11-25 17:09:44,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 736 transitions. [2022-11-25 17:09:44,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 736 transitions. [2022-11-25 17:09:44,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:44,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 736 transitions. [2022-11-25 17:09:44,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 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) [2022-11-25 17:09:44,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 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) [2022-11-25 17:09:44,311 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 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) [2022-11-25 17:09:44,313 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 179 flow. Second operand 3 states and 736 transitions. [2022-11-25 17:09:44,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 132 transitions, 487 flow [2022-11-25 17:09:44,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 132 transitions, 479 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 17:09:44,327 INFO L231 Difference]: Finished difference. Result has 87 places, 98 transitions, 296 flow [2022-11-25 17:09:44,329 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=87, PETRI_TRANSITIONS=98} [2022-11-25 17:09:44,333 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 1 predicate places. [2022-11-25 17:09:44,334 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 98 transitions, 296 flow [2022-11-25 17:09:44,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 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) [2022-11-25 17:09:44,335 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:44,335 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:44,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:09:44,336 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-11-25 17:09:44,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:44,339 INFO L85 PathProgramCache]: Analyzing trace with hash -12106589, now seen corresponding path program 1 times [2022-11-25 17:09:44,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:44,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296959902] [2022-11-25 17:09:44,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:44,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:44,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:44,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296959902] [2022-11-25 17:09:44,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296959902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:44,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:44,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:09:44,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747895614] [2022-11-25 17:09:44,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:44,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:09:44,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:44,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:09:44,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:09:44,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 404 [2022-11-25 17:09:44,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 98 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 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) [2022-11-25 17:09:44,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:44,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 404 [2022-11-25 17:09:44,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:45,625 INFO L130 PetriNetUnfolder]: 3392/7312 cut-off events. [2022-11-25 17:09:45,625 INFO L131 PetriNetUnfolder]: For 833/867 co-relation queries the response was YES. [2022-11-25 17:09:45,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14614 conditions, 7312 events. 3392/7312 cut-off events. For 833/867 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 54143 event pairs, 1066 based on Foata normal form. 0/6546 useless extension candidates. Maximal degree in co-relation 14003. Up to 2986 conditions per place. [2022-11-25 17:09:45,680 INFO L137 encePairwiseOnDemand]: 399/404 looper letters, 92 selfloop transitions, 4 changer transitions 0/143 dead transitions. [2022-11-25 17:09:45,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 143 transitions, 615 flow [2022-11-25 17:09:45,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:09:45,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:09:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 757 transitions. [2022-11-25 17:09:45,685 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6245874587458746 [2022-11-25 17:09:45,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 757 transitions. [2022-11-25 17:09:45,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 757 transitions. [2022-11-25 17:09:45,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:45,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 757 transitions. [2022-11-25 17:09:45,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 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) [2022-11-25 17:09:45,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 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) [2022-11-25 17:09:45,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 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) [2022-11-25 17:09:45,694 INFO L175 Difference]: Start difference. First operand has 87 places, 98 transitions, 296 flow. Second operand 3 states and 757 transitions. [2022-11-25 17:09:45,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 143 transitions, 615 flow [2022-11-25 17:09:45,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 143 transitions, 575 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:09:45,715 INFO L231 Difference]: Finished difference. Result has 89 places, 102 transitions, 302 flow [2022-11-25 17:09:45,715 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=89, PETRI_TRANSITIONS=102} [2022-11-25 17:09:45,716 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2022-11-25 17:09:45,716 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 102 transitions, 302 flow [2022-11-25 17:09:45,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 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) [2022-11-25 17:09:45,717 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:45,717 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:45,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:09:45,719 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-11-25 17:09:45,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:45,721 INFO L85 PathProgramCache]: Analyzing trace with hash 911090334, now seen corresponding path program 1 times [2022-11-25 17:09:45,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:45,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264241867] [2022-11-25 17:09:45,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:45,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:46,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:46,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264241867] [2022-11-25 17:09:46,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264241867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:46,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:46,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:09:46,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937405170] [2022-11-25 17:09:46,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:46,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:09:46,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:46,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:09:46,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:09:46,414 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 404 [2022-11-25 17:09:46,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 102 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 216.66666666666666) internal successors, (1300), 6 states have internal predecessors, (1300), 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) [2022-11-25 17:09:46,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:46,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 404 [2022-11-25 17:09:46,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:48,717 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([859] L1008-2-->L952-1: Formula: (and (not (= (mod v_~flag~0_73 256) 0)) (= |v_t2Thread1of1ForFork0_pop_~stack#1.base_247| |v_t2Thread1of1ForFork0_pop_#in~stack#1.base_31|) (= |v_t2Thread1of1ForFork0_pop_~stack#1.offset_247| |v_t2Thread1of1ForFork0_pop_#in~stack#1.offset_31|) (= |v_~#arr~0.offset_28| |v_t2Thread1of1ForFork0_pop_#in~stack#1.offset_31|) (= |v_t2Thread1of1ForFork0_pop_#in~stack#1.base_31| |v_~#arr~0.base_35|) (= |v_#race~top~0_349| 0)) InVars {~#arr~0.offset=|v_~#arr~0.offset_28|, ~flag~0=v_~flag~0_73, ~#arr~0.base=|v_~#arr~0.base_35|} OutVars{~#arr~0.offset=|v_~#arr~0.offset_28|, t2Thread1of1ForFork0_get_top_#res#1=|v_t2Thread1of1ForFork0_get_top_#res#1_91|, ~flag~0=v_~flag~0_73, t2Thread1of1ForFork0_pop_#t~mem41#1=|v_t2Thread1of1ForFork0_pop_#t~mem41#1_93|, t2Thread1of1ForFork0_pop_#res#1=|v_t2Thread1of1ForFork0_pop_#res#1_85|, t2Thread1of1ForFork0_pop_~stack#1.offset=|v_t2Thread1of1ForFork0_pop_~stack#1.offset_247|, t2Thread1of1ForFork0_pop_#t~ret38#1=|v_t2Thread1of1ForFork0_pop_#t~ret38#1_63|, t2Thread1of1ForFork0_pop_~stack#1.base=|v_t2Thread1of1ForFork0_pop_~stack#1.base_247|, t2Thread1of1ForFork0_pop_#t~ret40#1=|v_t2Thread1of1ForFork0_pop_#t~ret40#1_305|, #race~top~0=|v_#race~top~0_349|, t2Thread1of1ForFork0_pop_#in~stack#1.offset=|v_t2Thread1of1ForFork0_pop_#in~stack#1.offset_31|, ~#arr~0.base=|v_~#arr~0.base_35|, t2Thread1of1ForFork0_pop_#in~stack#1.base=|v_t2Thread1of1ForFork0_pop_#in~stack#1.base_31|, t2Thread1of1ForFork0_pop_#t~nondet39#1=|v_t2Thread1of1ForFork0_pop_#t~nondet39#1_27|} AuxVars[] AssignedVars[t2Thread1of1ForFork0_pop_~stack#1.base, t2Thread1of1ForFork0_get_top_#res#1, t2Thread1of1ForFork0_pop_#t~ret40#1, #race~top~0, t2Thread1of1ForFork0_pop_#in~stack#1.offset, t2Thread1of1ForFork0_pop_#t~mem41#1, t2Thread1of1ForFork0_pop_#res#1, t2Thread1of1ForFork0_pop_~stack#1.offset, t2Thread1of1ForFork0_pop_#in~stack#1.base, t2Thread1of1ForFork0_pop_#t~ret38#1, t2Thread1of1ForFork0_pop_#t~nondet39#1][91], [253#(= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0), 247#(= |#race~flag~0| 0), Black: 239#true, 70#L952-1true, Black: 245#true, 54#L952-2true, t2Thread1of1ForFork0InUse, 142#L1023-2true]) [2022-11-25 17:09:48,718 INFO L383 tUnfolder$Statistics]: this new event has 33 ancestors and is cut-off event [2022-11-25 17:09:48,718 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2022-11-25 17:09:48,719 INFO L386 tUnfolder$Statistics]: existing Event has 25 ancestors and is cut-off event [2022-11-25 17:09:48,719 INFO L386 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2022-11-25 17:09:48,719 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([859] L1008-2-->L952-1: Formula: (and (not (= (mod v_~flag~0_73 256) 0)) (= |v_t2Thread1of1ForFork0_pop_~stack#1.base_247| |v_t2Thread1of1ForFork0_pop_#in~stack#1.base_31|) (= |v_t2Thread1of1ForFork0_pop_~stack#1.offset_247| |v_t2Thread1of1ForFork0_pop_#in~stack#1.offset_31|) (= |v_~#arr~0.offset_28| |v_t2Thread1of1ForFork0_pop_#in~stack#1.offset_31|) (= |v_t2Thread1of1ForFork0_pop_#in~stack#1.base_31| |v_~#arr~0.base_35|) (= |v_#race~top~0_349| 0)) InVars {~#arr~0.offset=|v_~#arr~0.offset_28|, ~flag~0=v_~flag~0_73, ~#arr~0.base=|v_~#arr~0.base_35|} OutVars{~#arr~0.offset=|v_~#arr~0.offset_28|, t2Thread1of1ForFork0_get_top_#res#1=|v_t2Thread1of1ForFork0_get_top_#res#1_91|, ~flag~0=v_~flag~0_73, t2Thread1of1ForFork0_pop_#t~mem41#1=|v_t2Thread1of1ForFork0_pop_#t~mem41#1_93|, t2Thread1of1ForFork0_pop_#res#1=|v_t2Thread1of1ForFork0_pop_#res#1_85|, t2Thread1of1ForFork0_pop_~stack#1.offset=|v_t2Thread1of1ForFork0_pop_~stack#1.offset_247|, t2Thread1of1ForFork0_pop_#t~ret38#1=|v_t2Thread1of1ForFork0_pop_#t~ret38#1_63|, t2Thread1of1ForFork0_pop_~stack#1.base=|v_t2Thread1of1ForFork0_pop_~stack#1.base_247|, t2Thread1of1ForFork0_pop_#t~ret40#1=|v_t2Thread1of1ForFork0_pop_#t~ret40#1_305|, #race~top~0=|v_#race~top~0_349|, t2Thread1of1ForFork0_pop_#in~stack#1.offset=|v_t2Thread1of1ForFork0_pop_#in~stack#1.offset_31|, ~#arr~0.base=|v_~#arr~0.base_35|, t2Thread1of1ForFork0_pop_#in~stack#1.base=|v_t2Thread1of1ForFork0_pop_#in~stack#1.base_31|, t2Thread1of1ForFork0_pop_#t~nondet39#1=|v_t2Thread1of1ForFork0_pop_#t~nondet39#1_27|} AuxVars[] AssignedVars[t2Thread1of1ForFork0_pop_~stack#1.base, t2Thread1of1ForFork0_get_top_#res#1, t2Thread1of1ForFork0_pop_#t~ret40#1, #race~top~0, t2Thread1of1ForFork0_pop_#in~stack#1.offset, t2Thread1of1ForFork0_pop_#t~mem41#1, t2Thread1of1ForFork0_pop_#res#1, t2Thread1of1ForFork0_pop_~stack#1.offset, t2Thread1of1ForFork0_pop_#in~stack#1.base, t2Thread1of1ForFork0_pop_#t~ret38#1, t2Thread1of1ForFork0_pop_#t~nondet39#1][106], [247#(= |#race~flag~0| 0), Black: 239#true, 255#(and (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 2 |ULTIMATE.start_main_~#id1~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0)), 70#L952-1true, 21#L1023-4true, Black: 245#true, 54#L952-2true, t2Thread1of1ForFork0InUse]) [2022-11-25 17:09:48,720 INFO L383 tUnfolder$Statistics]: this new event has 35 ancestors and is cut-off event [2022-11-25 17:09:48,720 INFO L386 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2022-11-25 17:09:48,720 INFO L386 tUnfolder$Statistics]: existing Event has 27 ancestors and is cut-off event [2022-11-25 17:09:48,720 INFO L386 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2022-11-25 17:09:48,721 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([859] L1008-2-->L952-1: Formula: (and (not (= (mod v_~flag~0_73 256) 0)) (= |v_t2Thread1of1ForFork0_pop_~stack#1.base_247| |v_t2Thread1of1ForFork0_pop_#in~stack#1.base_31|) (= |v_t2Thread1of1ForFork0_pop_~stack#1.offset_247| |v_t2Thread1of1ForFork0_pop_#in~stack#1.offset_31|) (= |v_~#arr~0.offset_28| |v_t2Thread1of1ForFork0_pop_#in~stack#1.offset_31|) (= |v_t2Thread1of1ForFork0_pop_#in~stack#1.base_31| |v_~#arr~0.base_35|) (= |v_#race~top~0_349| 0)) InVars {~#arr~0.offset=|v_~#arr~0.offset_28|, ~flag~0=v_~flag~0_73, ~#arr~0.base=|v_~#arr~0.base_35|} OutVars{~#arr~0.offset=|v_~#arr~0.offset_28|, t2Thread1of1ForFork0_get_top_#res#1=|v_t2Thread1of1ForFork0_get_top_#res#1_91|, ~flag~0=v_~flag~0_73, t2Thread1of1ForFork0_pop_#t~mem41#1=|v_t2Thread1of1ForFork0_pop_#t~mem41#1_93|, t2Thread1of1ForFork0_pop_#res#1=|v_t2Thread1of1ForFork0_pop_#res#1_85|, t2Thread1of1ForFork0_pop_~stack#1.offset=|v_t2Thread1of1ForFork0_pop_~stack#1.offset_247|, t2Thread1of1ForFork0_pop_#t~ret38#1=|v_t2Thread1of1ForFork0_pop_#t~ret38#1_63|, t2Thread1of1ForFork0_pop_~stack#1.base=|v_t2Thread1of1ForFork0_pop_~stack#1.base_247|, t2Thread1of1ForFork0_pop_#t~ret40#1=|v_t2Thread1of1ForFork0_pop_#t~ret40#1_305|, #race~top~0=|v_#race~top~0_349|, t2Thread1of1ForFork0_pop_#in~stack#1.offset=|v_t2Thread1of1ForFork0_pop_#in~stack#1.offset_31|, ~#arr~0.base=|v_~#arr~0.base_35|, t2Thread1of1ForFork0_pop_#in~stack#1.base=|v_t2Thread1of1ForFork0_pop_#in~stack#1.base_31|, t2Thread1of1ForFork0_pop_#t~nondet39#1=|v_t2Thread1of1ForFork0_pop_#t~nondet39#1_27|} AuxVars[] AssignedVars[t2Thread1of1ForFork0_pop_~stack#1.base, t2Thread1of1ForFork0_get_top_#res#1, t2Thread1of1ForFork0_pop_#t~ret40#1, #race~top~0, t2Thread1of1ForFork0_pop_#in~stack#1.offset, t2Thread1of1ForFork0_pop_#t~mem41#1, t2Thread1of1ForFork0_pop_#res#1, t2Thread1of1ForFork0_pop_~stack#1.offset, t2Thread1of1ForFork0_pop_#in~stack#1.base, t2Thread1of1ForFork0_pop_#t~ret38#1, t2Thread1of1ForFork0_pop_#t~nondet39#1][92], [247#(= |#race~flag~0| 0), Black: 239#true, 104#L1023-3true, 70#L952-1true, Black: 245#true, 254#(and (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0)), 54#L952-2true, t2Thread1of1ForFork0InUse]) [2022-11-25 17:09:48,721 INFO L383 tUnfolder$Statistics]: this new event has 34 ancestors and is cut-off event [2022-11-25 17:09:48,721 INFO L386 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2022-11-25 17:09:48,721 INFO L386 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2022-11-25 17:09:48,722 INFO L386 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2022-11-25 17:09:48,853 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([859] L1008-2-->L952-1: Formula: (and (not (= (mod v_~flag~0_73 256) 0)) (= |v_t2Thread1of1ForFork0_pop_~stack#1.base_247| |v_t2Thread1of1ForFork0_pop_#in~stack#1.base_31|) (= |v_t2Thread1of1ForFork0_pop_~stack#1.offset_247| |v_t2Thread1of1ForFork0_pop_#in~stack#1.offset_31|) (= |v_~#arr~0.offset_28| |v_t2Thread1of1ForFork0_pop_#in~stack#1.offset_31|) (= |v_t2Thread1of1ForFork0_pop_#in~stack#1.base_31| |v_~#arr~0.base_35|) (= |v_#race~top~0_349| 0)) InVars {~#arr~0.offset=|v_~#arr~0.offset_28|, ~flag~0=v_~flag~0_73, ~#arr~0.base=|v_~#arr~0.base_35|} OutVars{~#arr~0.offset=|v_~#arr~0.offset_28|, t2Thread1of1ForFork0_get_top_#res#1=|v_t2Thread1of1ForFork0_get_top_#res#1_91|, ~flag~0=v_~flag~0_73, t2Thread1of1ForFork0_pop_#t~mem41#1=|v_t2Thread1of1ForFork0_pop_#t~mem41#1_93|, t2Thread1of1ForFork0_pop_#res#1=|v_t2Thread1of1ForFork0_pop_#res#1_85|, t2Thread1of1ForFork0_pop_~stack#1.offset=|v_t2Thread1of1ForFork0_pop_~stack#1.offset_247|, t2Thread1of1ForFork0_pop_#t~ret38#1=|v_t2Thread1of1ForFork0_pop_#t~ret38#1_63|, t2Thread1of1ForFork0_pop_~stack#1.base=|v_t2Thread1of1ForFork0_pop_~stack#1.base_247|, t2Thread1of1ForFork0_pop_#t~ret40#1=|v_t2Thread1of1ForFork0_pop_#t~ret40#1_305|, #race~top~0=|v_#race~top~0_349|, t2Thread1of1ForFork0_pop_#in~stack#1.offset=|v_t2Thread1of1ForFork0_pop_#in~stack#1.offset_31|, ~#arr~0.base=|v_~#arr~0.base_35|, t2Thread1of1ForFork0_pop_#in~stack#1.base=|v_t2Thread1of1ForFork0_pop_#in~stack#1.base_31|, t2Thread1of1ForFork0_pop_#t~nondet39#1=|v_t2Thread1of1ForFork0_pop_#t~nondet39#1_27|} AuxVars[] AssignedVars[t2Thread1of1ForFork0_pop_~stack#1.base, t2Thread1of1ForFork0_get_top_#res#1, t2Thread1of1ForFork0_pop_#t~ret40#1, #race~top~0, t2Thread1of1ForFork0_pop_#in~stack#1.offset, t2Thread1of1ForFork0_pop_#t~mem41#1, t2Thread1of1ForFork0_pop_#res#1, t2Thread1of1ForFork0_pop_~stack#1.offset, t2Thread1of1ForFork0_pop_#in~stack#1.base, t2Thread1of1ForFork0_pop_#t~ret38#1, t2Thread1of1ForFork0_pop_#t~nondet39#1][122], [Black: 239#true, 247#(= |#race~flag~0| 0), 70#L952-1true, Black: 245#true, 52#L1023-5true, 54#L952-2true, t2Thread1of1ForFork0InUse, 256#(and (= 0 (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 3 |ULTIMATE.start_main_~#id1~0#1.offset|))) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 2 |ULTIMATE.start_main_~#id1~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0))]) [2022-11-25 17:09:48,854 INFO L383 tUnfolder$Statistics]: this new event has 36 ancestors and is cut-off event [2022-11-25 17:09:48,854 INFO L386 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2022-11-25 17:09:48,854 INFO L386 tUnfolder$Statistics]: existing Event has 25 ancestors and is cut-off event [2022-11-25 17:09:48,854 INFO L386 tUnfolder$Statistics]: existing Event has 28 ancestors and is cut-off event [2022-11-25 17:09:49,024 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([859] L1008-2-->L952-1: Formula: (and (not (= (mod v_~flag~0_73 256) 0)) (= |v_t2Thread1of1ForFork0_pop_~stack#1.base_247| |v_t2Thread1of1ForFork0_pop_#in~stack#1.base_31|) (= |v_t2Thread1of1ForFork0_pop_~stack#1.offset_247| |v_t2Thread1of1ForFork0_pop_#in~stack#1.offset_31|) (= |v_~#arr~0.offset_28| |v_t2Thread1of1ForFork0_pop_#in~stack#1.offset_31|) (= |v_t2Thread1of1ForFork0_pop_#in~stack#1.base_31| |v_~#arr~0.base_35|) (= |v_#race~top~0_349| 0)) InVars {~#arr~0.offset=|v_~#arr~0.offset_28|, ~flag~0=v_~flag~0_73, ~#arr~0.base=|v_~#arr~0.base_35|} OutVars{~#arr~0.offset=|v_~#arr~0.offset_28|, t2Thread1of1ForFork0_get_top_#res#1=|v_t2Thread1of1ForFork0_get_top_#res#1_91|, ~flag~0=v_~flag~0_73, t2Thread1of1ForFork0_pop_#t~mem41#1=|v_t2Thread1of1ForFork0_pop_#t~mem41#1_93|, t2Thread1of1ForFork0_pop_#res#1=|v_t2Thread1of1ForFork0_pop_#res#1_85|, t2Thread1of1ForFork0_pop_~stack#1.offset=|v_t2Thread1of1ForFork0_pop_~stack#1.offset_247|, t2Thread1of1ForFork0_pop_#t~ret38#1=|v_t2Thread1of1ForFork0_pop_#t~ret38#1_63|, t2Thread1of1ForFork0_pop_~stack#1.base=|v_t2Thread1of1ForFork0_pop_~stack#1.base_247|, t2Thread1of1ForFork0_pop_#t~ret40#1=|v_t2Thread1of1ForFork0_pop_#t~ret40#1_305|, #race~top~0=|v_#race~top~0_349|, t2Thread1of1ForFork0_pop_#in~stack#1.offset=|v_t2Thread1of1ForFork0_pop_#in~stack#1.offset_31|, ~#arr~0.base=|v_~#arr~0.base_35|, t2Thread1of1ForFork0_pop_#in~stack#1.base=|v_t2Thread1of1ForFork0_pop_#in~stack#1.base_31|, t2Thread1of1ForFork0_pop_#t~nondet39#1=|v_t2Thread1of1ForFork0_pop_#t~nondet39#1_27|} AuxVars[] AssignedVars[t2Thread1of1ForFork0_pop_~stack#1.base, t2Thread1of1ForFork0_get_top_#res#1, t2Thread1of1ForFork0_pop_#t~ret40#1, #race~top~0, t2Thread1of1ForFork0_pop_#in~stack#1.offset, t2Thread1of1ForFork0_pop_#t~mem41#1, t2Thread1of1ForFork0_pop_#res#1, t2Thread1of1ForFork0_pop_~stack#1.offset, t2Thread1of1ForFork0_pop_#in~stack#1.base, t2Thread1of1ForFork0_pop_#t~ret38#1, t2Thread1of1ForFork0_pop_#t~nondet39#1][122], [247#(= |#race~flag~0| 0), Black: 239#true, 70#L952-1true, Black: 245#true, 48#L1023-6true, 54#L952-2true, t2Thread1of1ForFork0InUse, 256#(and (= 0 (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 3 |ULTIMATE.start_main_~#id1~0#1.offset|))) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) |ULTIMATE.start_main_~#id1~0#1.offset|) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ 2 |ULTIMATE.start_main_~#id1~0#1.offset|)) 0) (= (select (select |#race| |ULTIMATE.start_main_~#id1~0#1.base|) (+ |ULTIMATE.start_main_~#id1~0#1.offset| 1)) 0))]) [2022-11-25 17:09:49,025 INFO L383 tUnfolder$Statistics]: this new event has 37 ancestors and is cut-off event [2022-11-25 17:09:49,025 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2022-11-25 17:09:49,025 INFO L386 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2022-11-25 17:09:49,025 INFO L386 tUnfolder$Statistics]: existing Event has 29 ancestors and is cut-off event [2022-11-25 17:09:52,476 INFO L130 PetriNetUnfolder]: 27444/48420 cut-off events. [2022-11-25 17:09:52,476 INFO L131 PetriNetUnfolder]: For 7336/8728 co-relation queries the response was YES. [2022-11-25 17:09:52,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101250 conditions, 48420 events. 27444/48420 cut-off events. For 7336/8728 co-relation queries the response was YES. Maximal size of possible extension queue 982. Compared 412566 event pairs, 7554 based on Foata normal form. 342/43694 useless extension candidates. Maximal degree in co-relation 99926. Up to 23737 conditions per place. [2022-11-25 17:09:52,786 INFO L137 encePairwiseOnDemand]: 394/404 looper letters, 230 selfloop transitions, 21 changer transitions 0/293 dead transitions. [2022-11-25 17:09:52,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 293 transitions, 1331 flow [2022-11-25 17:09:52,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:09:52,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:09:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1502 transitions. [2022-11-25 17:09:52,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6196369636963697 [2022-11-25 17:09:52,791 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1502 transitions. [2022-11-25 17:09:52,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1502 transitions. [2022-11-25 17:09:52,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:52,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1502 transitions. [2022-11-25 17:09:52,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.33333333333334) internal successors, (1502), 6 states have internal predecessors, (1502), 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) [2022-11-25 17:09:52,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 404.0) internal successors, (2828), 7 states have internal predecessors, (2828), 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) [2022-11-25 17:09:52,803 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 404.0) internal successors, (2828), 7 states have internal predecessors, (2828), 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) [2022-11-25 17:09:52,803 INFO L175 Difference]: Start difference. First operand has 89 places, 102 transitions, 302 flow. Second operand 6 states and 1502 transitions. [2022-11-25 17:09:52,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 293 transitions, 1331 flow [2022-11-25 17:09:52,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 293 transitions, 1307 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:09:52,821 INFO L231 Difference]: Finished difference. Result has 97 places, 122 transitions, 436 flow [2022-11-25 17:09:52,821 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=436, PETRI_PLACES=97, PETRI_TRANSITIONS=122} [2022-11-25 17:09:52,823 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 11 predicate places. [2022-11-25 17:09:52,823 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 122 transitions, 436 flow [2022-11-25 17:09:52,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 216.66666666666666) internal successors, (1300), 6 states have internal predecessors, (1300), 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) [2022-11-25 17:09:52,824 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:52,824 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:52,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:09:52,825 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-11-25 17:09:52,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:52,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1367489298, now seen corresponding path program 1 times [2022-11-25 17:09:52,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:52,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921564576] [2022-11-25 17:09:52,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:52,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:52,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:52,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921564576] [2022-11-25 17:09:52,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921564576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:52,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:52,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:09:52,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215972641] [2022-11-25 17:09:52,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:52,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:09:52,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:52,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:09:52,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:09:52,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 404 [2022-11-25 17:09:52,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 122 transitions, 436 flow. Second operand has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 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) [2022-11-25 17:09:52,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:52,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 404 [2022-11-25 17:09:52,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:56,304 INFO L130 PetriNetUnfolder]: 12172/30170 cut-off events. [2022-11-25 17:09:56,305 INFO L131 PetriNetUnfolder]: For 3865/5051 co-relation queries the response was YES. [2022-11-25 17:09:56,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63252 conditions, 30170 events. 12172/30170 cut-off events. For 3865/5051 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 318862 event pairs, 4603 based on Foata normal form. 180/27810 useless extension candidates. Maximal degree in co-relation 62622. Up to 13635 conditions per place. [2022-11-25 17:09:56,573 INFO L137 encePairwiseOnDemand]: 399/404 looper letters, 80 selfloop transitions, 3 changer transitions 0/155 dead transitions. [2022-11-25 17:09:56,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 155 transitions, 691 flow [2022-11-25 17:09:56,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:09:56,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:09:56,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 745 transitions. [2022-11-25 17:09:56,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6146864686468647 [2022-11-25 17:09:56,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 745 transitions. [2022-11-25 17:09:56,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 745 transitions. [2022-11-25 17:09:56,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:56,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 745 transitions. [2022-11-25 17:09:56,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 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) [2022-11-25 17:09:56,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 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) [2022-11-25 17:09:56,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 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) [2022-11-25 17:09:56,587 INFO L175 Difference]: Start difference. First operand has 97 places, 122 transitions, 436 flow. Second operand 3 states and 745 transitions. [2022-11-25 17:09:56,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 155 transitions, 691 flow [2022-11-25 17:09:56,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 155 transitions, 691 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:09:56,640 INFO L231 Difference]: Finished difference. Result has 101 places, 124 transitions, 460 flow [2022-11-25 17:09:56,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=460, PETRI_PLACES=101, PETRI_TRANSITIONS=124} [2022-11-25 17:09:56,643 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 15 predicate places. [2022-11-25 17:09:56,643 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 124 transitions, 460 flow [2022-11-25 17:09:56,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 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) [2022-11-25 17:09:56,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:56,644 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:56,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:09:56,645 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-11-25 17:09:56,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:56,646 INFO L85 PathProgramCache]: Analyzing trace with hash 649305794, now seen corresponding path program 1 times [2022-11-25 17:09:56,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:56,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183639514] [2022-11-25 17:09:56,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:56,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:57,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:57,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:57,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183639514] [2022-11-25 17:09:57,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183639514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:57,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:57,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:09:57,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951636600] [2022-11-25 17:09:57,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:57,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:09:57,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:57,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:09:57,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:09:57,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 404 [2022-11-25 17:09:57,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 124 transitions, 460 flow. Second operand has 6 states, 6 states have (on average 206.33333333333334) internal successors, (1238), 6 states have internal predecessors, (1238), 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) [2022-11-25 17:09:57,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:57,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 404 [2022-11-25 17:09:57,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:10:04,693 INFO L130 PetriNetUnfolder]: 37680/67784 cut-off events. [2022-11-25 17:10:04,694 INFO L131 PetriNetUnfolder]: For 38470/40647 co-relation queries the response was YES. [2022-11-25 17:10:04,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172801 conditions, 67784 events. 37680/67784 cut-off events. For 38470/40647 co-relation queries the response was YES. Maximal size of possible extension queue 1264. Compared 592420 event pairs, 19581 based on Foata normal form. 500/64061 useless extension candidates. Maximal degree in co-relation 171567. Up to 54132 conditions per place. [2022-11-25 17:10:05,122 INFO L137 encePairwiseOnDemand]: 390/404 looper letters, 174 selfloop transitions, 44 changer transitions 0/255 dead transitions. [2022-11-25 17:10:05,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 255 transitions, 1304 flow [2022-11-25 17:10:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:10:05,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:10:05,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1399 transitions. [2022-11-25 17:10:05,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5771452145214522 [2022-11-25 17:10:05,131 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1399 transitions. [2022-11-25 17:10:05,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1399 transitions. [2022-11-25 17:10:05,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:10:05,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1399 transitions. [2022-11-25 17:10:05,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 233.16666666666666) internal successors, (1399), 6 states have internal predecessors, (1399), 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) [2022-11-25 17:10:05,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 404.0) internal successors, (2828), 7 states have internal predecessors, (2828), 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) [2022-11-25 17:10:05,154 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 404.0) internal successors, (2828), 7 states have internal predecessors, (2828), 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) [2022-11-25 17:10:05,154 INFO L175 Difference]: Start difference. First operand has 101 places, 124 transitions, 460 flow. Second operand 6 states and 1399 transitions. [2022-11-25 17:10:05,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 255 transitions, 1304 flow [2022-11-25 17:10:05,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 255 transitions, 1290 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:10:05,782 INFO L231 Difference]: Finished difference. Result has 108 places, 163 transitions, 760 flow [2022-11-25 17:10:05,783 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=760, PETRI_PLACES=108, PETRI_TRANSITIONS=163} [2022-11-25 17:10:05,783 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 22 predicate places. [2022-11-25 17:10:05,783 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 163 transitions, 760 flow [2022-11-25 17:10:05,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 206.33333333333334) internal successors, (1238), 6 states have internal predecessors, (1238), 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) [2022-11-25 17:10:05,784 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:05,784 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:10:05,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:10:05,785 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-11-25 17:10:05,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:05,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1522777905, now seen corresponding path program 1 times [2022-11-25 17:10:05,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:05,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409550218] [2022-11-25 17:10:05,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:05,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:05,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:05,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409550218] [2022-11-25 17:10:05,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409550218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:05,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:05,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:10:05,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604882040] [2022-11-25 17:10:05,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:05,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:10:05,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:05,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:10:05,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:10:05,869 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 404 [2022-11-25 17:10:05,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 163 transitions, 760 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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) [2022-11-25 17:10:05,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:10:05,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 404 [2022-11-25 17:10:05,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:10:11,161 INFO L130 PetriNetUnfolder]: 20327/47229 cut-off events. [2022-11-25 17:10:11,161 INFO L131 PetriNetUnfolder]: For 15360/18427 co-relation queries the response was YES. [2022-11-25 17:10:11,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115028 conditions, 47229 events. 20327/47229 cut-off events. For 15360/18427 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 503628 event pairs, 6948 based on Foata normal form. 820/44369 useless extension candidates. Maximal degree in co-relation 108824. Up to 22897 conditions per place. [2022-11-25 17:10:11,447 INFO L137 encePairwiseOnDemand]: 401/404 looper letters, 92 selfloop transitions, 2 changer transitions 0/204 dead transitions. [2022-11-25 17:10:11,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 204 transitions, 1071 flow [2022-11-25 17:10:11,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:10:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:10:11,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 749 transitions. [2022-11-25 17:10:11,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6179867986798679 [2022-11-25 17:10:11,451 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 749 transitions. [2022-11-25 17:10:11,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 749 transitions. [2022-11-25 17:10:11,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:10:11,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 749 transitions. [2022-11-25 17:10:11,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:11,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 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) [2022-11-25 17:10:11,459 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 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) [2022-11-25 17:10:11,459 INFO L175 Difference]: Start difference. First operand has 108 places, 163 transitions, 760 flow. Second operand 3 states and 749 transitions. [2022-11-25 17:10:11,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 204 transitions, 1071 flow [2022-11-25 17:10:12,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 204 transitions, 1047 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-11-25 17:10:12,083 INFO L231 Difference]: Finished difference. Result has 111 places, 164 transitions, 748 flow [2022-11-25 17:10:12,084 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=748, PETRI_PLACES=111, PETRI_TRANSITIONS=164} [2022-11-25 17:10:12,085 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 25 predicate places. [2022-11-25 17:10:12,085 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 164 transitions, 748 flow [2022-11-25 17:10:12,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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) [2022-11-25 17:10:12,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:12,086 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:10:12,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:10:12,086 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-11-25 17:10:12,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:12,087 INFO L85 PathProgramCache]: Analyzing trace with hash -228349990, now seen corresponding path program 1 times [2022-11-25 17:10:12,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:12,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876619331] [2022-11-25 17:10:12,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:12,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:12,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:12,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876619331] [2022-11-25 17:10:12,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876619331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:12,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:12,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:10:12,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877924987] [2022-11-25 17:10:12,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:12,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:10:12,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:12,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:10:12,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:10:13,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 404 [2022-11-25 17:10:13,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 164 transitions, 748 flow. Second operand has 9 states, 9 states have (on average 215.0) internal successors, (1935), 9 states have internal predecessors, (1935), 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) [2022-11-25 17:10:13,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:10:13,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 404 [2022-11-25 17:10:13,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:10:28,605 INFO L130 PetriNetUnfolder]: 62799/113282 cut-off events. [2022-11-25 17:10:28,605 INFO L131 PetriNetUnfolder]: For 83113/89997 co-relation queries the response was YES. [2022-11-25 17:10:28,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317415 conditions, 113282 events. 62799/113282 cut-off events. For 83113/89997 co-relation queries the response was YES. Maximal size of possible extension queue 2323. Compared 1094057 event pairs, 18611 based on Foata normal form. 5412/112622 useless extension candidates. Maximal degree in co-relation 315156. Up to 46521 conditions per place. [2022-11-25 17:10:29,365 INFO L137 encePairwiseOnDemand]: 392/404 looper letters, 323 selfloop transitions, 31 changer transitions 0/412 dead transitions. [2022-11-25 17:10:29,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 412 transitions, 2327 flow [2022-11-25 17:10:29,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:10:29,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:10:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1957 transitions. [2022-11-25 17:10:29,373 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6055074257425742 [2022-11-25 17:10:29,373 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1957 transitions. [2022-11-25 17:10:29,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1957 transitions. [2022-11-25 17:10:29,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:10:29,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1957 transitions. [2022-11-25 17:10:29,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 244.625) internal successors, (1957), 8 states have internal predecessors, (1957), 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) [2022-11-25 17:10:29,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 404.0) internal successors, (3636), 9 states have internal predecessors, (3636), 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) [2022-11-25 17:10:29,391 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 404.0) internal successors, (3636), 9 states have internal predecessors, (3636), 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) [2022-11-25 17:10:29,391 INFO L175 Difference]: Start difference. First operand has 111 places, 164 transitions, 748 flow. Second operand 8 states and 1957 transitions. [2022-11-25 17:10:29,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 412 transitions, 2327 flow [2022-11-25 17:10:34,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 412 transitions, 2316 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:10:34,308 INFO L231 Difference]: Finished difference. Result has 120 places, 174 transitions, 946 flow [2022-11-25 17:10:34,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=946, PETRI_PLACES=120, PETRI_TRANSITIONS=174} [2022-11-25 17:10:34,310 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 34 predicate places. [2022-11-25 17:10:34,310 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 174 transitions, 946 flow [2022-11-25 17:10:34,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 215.0) internal successors, (1935), 9 states have internal predecessors, (1935), 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) [2022-11-25 17:10:34,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:34,311 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:10:34,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:10:34,311 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-11-25 17:10:34,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:34,312 INFO L85 PathProgramCache]: Analyzing trace with hash -20502214, now seen corresponding path program 2 times [2022-11-25 17:10:34,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:34,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941236960] [2022-11-25 17:10:34,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:34,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:34,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:34,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:34,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941236960] [2022-11-25 17:10:34,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941236960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:34,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:34,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:10:34,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122387498] [2022-11-25 17:10:34,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:34,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:10:34,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:34,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:10:34,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:10:35,091 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 404 [2022-11-25 17:10:35,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 174 transitions, 946 flow. Second operand has 9 states, 9 states have (on average 215.0) internal successors, (1935), 9 states have internal predecessors, (1935), 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) [2022-11-25 17:10:35,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:10:35,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 404 [2022-11-25 17:10:35,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand