./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39dcc47a23129180b44ef3e235976e9c499f5290fa3f0e6dd106879ae94f5ae2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 21:09:55,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:09:55,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:09:56,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:09:56,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:09:56,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:09:56,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:09:56,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:09:56,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:09:56,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:09:56,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:09:56,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:09:56,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:09:56,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:09:56,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:09:56,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:09:56,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:09:56,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:09:56,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:09:56,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:09:56,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:09:56,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:09:56,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:09:56,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:09:56,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:09:56,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:09:56,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:09:56,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:09:56,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:09:56,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:09:56,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:09:56,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:09:56,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:09:56,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:09:56,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:09:56,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:09:56,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:09:56,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:09:56,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:09:56,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:09:56,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:09:56,108 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 21:09:56,156 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:09:56,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:09:56,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:09:56,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:09:56,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:09:56,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:09:56,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:09:56,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:09:56,160 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:09:56,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:09:56,161 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:09:56,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:09:56,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:09:56,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:09:56,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:09:56,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:09:56,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:09:56,163 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:09:56,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:09:56,163 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:09:56,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:09:56,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:09:56,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:09:56,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:09:56,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:09:56,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:09:56,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:09:56,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:09:56,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:09:56,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:09:56,166 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:09:56,167 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:09:56,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:09:56,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39dcc47a23129180b44ef3e235976e9c499f5290fa3f0e6dd106879ae94f5ae2 [2022-11-18 21:09:56,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:09:56,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:09:56,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:09:56,565 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:09:56,566 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:09:56,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2022-11-18 21:09:56,653 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/bin/uautomizer-TMbwUNV5ro/data/8375723b5/4a6a19f422bf4f89969a5b00dae5fa5f/FLAG36b0b47f0 [2022-11-18 21:09:57,184 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:09:57,185 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2022-11-18 21:09:57,198 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/bin/uautomizer-TMbwUNV5ro/data/8375723b5/4a6a19f422bf4f89969a5b00dae5fa5f/FLAG36b0b47f0 [2022-11-18 21:09:57,525 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/bin/uautomizer-TMbwUNV5ro/data/8375723b5/4a6a19f422bf4f89969a5b00dae5fa5f [2022-11-18 21:09:57,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:09:57,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:09:57,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:09:57,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:09:57,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:09:57,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:57" (1/1) ... [2022-11-18 21:09:57,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e96cab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:57, skipping insertion in model container [2022-11-18 21:09:57,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:57" (1/1) ... [2022-11-18 21:09:57,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:09:57,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:09:57,994 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c[7978,7991] [2022-11-18 21:09:58,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:09:58,023 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:09:58,064 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c[7978,7991] [2022-11-18 21:09:58,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:09:58,083 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:09:58,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:58 WrapperNode [2022-11-18 21:09:58,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:09:58,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:09:58,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:09:58,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:09:58,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:58" (1/1) ... [2022-11-18 21:09:58,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:58" (1/1) ... [2022-11-18 21:09:58,154 INFO L138 Inliner]: procedures = 23, calls = 176, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 392 [2022-11-18 21:09:58,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:09:58,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:09:58,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:09:58,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:09:58,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:58" (1/1) ... [2022-11-18 21:09:58,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:58" (1/1) ... [2022-11-18 21:09:58,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:58" (1/1) ... [2022-11-18 21:09:58,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:58" (1/1) ... [2022-11-18 21:09:58,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:58" (1/1) ... [2022-11-18 21:09:58,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:58" (1/1) ... [2022-11-18 21:09:58,191 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:58" (1/1) ... [2022-11-18 21:09:58,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:58" (1/1) ... [2022-11-18 21:09:58,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:09:58,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:09:58,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:09:58,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:09:58,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:58" (1/1) ... [2022-11-18 21:09:58,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:09:58,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:58,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:09:58,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21491ac8-9385-4776-a7c0-8f5ffc4ac7db/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:09:58,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:09:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 21:09:58,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 21:09:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 21:09:58,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 21:09:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 21:09:58,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 21:09:58,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 21:09:58,330 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 21:09:58,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:09:58,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:09:58,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:09:58,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 21:09:58,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 21:09:58,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:09:58,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:09:58,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:09:58,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:09:58,333 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 21:09:58,573 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:09:58,575 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:09:59,302 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:09:59,571 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:09:59,572 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 21:09:59,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:59 BoogieIcfgContainer [2022-11-18 21:09:59,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:09:59,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:09:59,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:09:59,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:09:59,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:09:57" (1/3) ... [2022-11-18 21:09:59,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af02f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:59, skipping insertion in model container [2022-11-18 21:09:59,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:58" (2/3) ... [2022-11-18 21:09:59,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af02f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:59, skipping insertion in model container [2022-11-18 21:09:59,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:59" (3/3) ... [2022-11-18 21:09:59,591 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.c [2022-11-18 21:09:59,607 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:09:59,620 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:09:59,620 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 21:09:59,620 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:09:59,752 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 21:09:59,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 202 transitions, 436 flow [2022-11-18 21:09:59,961 INFO L130 PetriNetUnfolder]: 2/198 cut-off events. [2022-11-18 21:09:59,961 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 21:09:59,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 198 events. 2/198 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 204 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 150. Up to 2 conditions per place. [2022-11-18 21:09:59,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 202 transitions, 436 flow [2022-11-18 21:09:59,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 185 transitions, 394 flow [2022-11-18 21:09:59,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:09:59,994 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;@7eaeb835, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:09:59,995 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-18 21:10:00,087 INFO L130 PetriNetUnfolder]: 2/184 cut-off events. [2022-11-18 21:10:00,087 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 21:10:00,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:00,089 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:00,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 21:10:00,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:00,098 INFO L85 PathProgramCache]: Analyzing trace with hash 305130744, now seen corresponding path program 1 times [2022-11-18 21:10:00,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:00,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877347935] [2022-11-18 21:10:00,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:00,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:02,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:02,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:02,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877347935] [2022-11-18 21:10:02,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877347935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:02,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:02,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 21:10:02,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285530782] [2022-11-18 21:10:02,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:02,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 21:10:02,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:02,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 21:10:02,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:10:02,465 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 202 [2022-11-18 21:10:02,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 185 transitions, 394 flow. Second operand has 15 states, 15 states have (on average 139.13333333333333) internal successors, (2087), 15 states have internal predecessors, (2087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:02,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:02,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 202 [2022-11-18 21:10:02,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:16,253 INFO L130 PetriNetUnfolder]: 33831/64493 cut-off events. [2022-11-18 21:10:16,254 INFO L131 PetriNetUnfolder]: For 5737/5737 co-relation queries the response was YES. [2022-11-18 21:10:16,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115875 conditions, 64493 events. 33831/64493 cut-off events. For 5737/5737 co-relation queries the response was YES. Maximal size of possible extension queue 2004. Compared 668902 event pairs, 17466 based on Foata normal form. 9/64032 useless extension candidates. Maximal degree in co-relation 114641. Up to 23575 conditions per place. [2022-11-18 21:10:16,864 INFO L137 encePairwiseOnDemand]: 180/202 looper letters, 269 selfloop transitions, 31 changer transitions 27/446 dead transitions. [2022-11-18 21:10:16,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 446 transitions, 1672 flow [2022-11-18 21:10:16,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 21:10:16,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-18 21:10:16,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3847 transitions. [2022-11-18 21:10:16,896 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7324828636709825 [2022-11-18 21:10:16,898 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3847 transitions. [2022-11-18 21:10:16,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3847 transitions. [2022-11-18 21:10:16,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:16,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3847 transitions. [2022-11-18 21:10:16,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 147.96153846153845) internal successors, (3847), 26 states have internal predecessors, (3847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:16,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 202.0) internal successors, (5454), 27 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:16,951 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 202.0) internal successors, (5454), 27 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:16,953 INFO L175 Difference]: Start difference. First operand has 196 places, 185 transitions, 394 flow. Second operand 26 states and 3847 transitions. [2022-11-18 21:10:16,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 446 transitions, 1672 flow [2022-11-18 21:10:17,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 446 transitions, 1588 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 21:10:17,048 INFO L231 Difference]: Finished difference. Result has 220 places, 210 transitions, 543 flow [2022-11-18 21:10:17,050 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=543, PETRI_PLACES=220, PETRI_TRANSITIONS=210} [2022-11-18 21:10:17,056 INFO L288 CegarLoopForPetriNet]: 196 programPoint places, 24 predicate places. [2022-11-18 21:10:17,057 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 210 transitions, 543 flow [2022-11-18 21:10:17,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 139.13333333333333) internal successors, (2087), 15 states have internal predecessors, (2087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:17,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:17,060 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:17,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:10:17,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 21:10:17,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:17,063 INFO L85 PathProgramCache]: Analyzing trace with hash 668866056, now seen corresponding path program 2 times [2022-11-18 21:10:17,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:17,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397733017] [2022-11-18 21:10:17,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:17,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:17,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:17,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397733017] [2022-11-18 21:10:17,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397733017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:17,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:17,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:10:17,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275104310] [2022-11-18 21:10:17,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:17,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:10:17,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:17,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:10:17,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:10:17,951 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 202 [2022-11-18 21:10:17,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 210 transitions, 543 flow. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:17,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:17,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 202 [2022-11-18 21:10:17,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:23,629 INFO L130 PetriNetUnfolder]: 16816/36124 cut-off events. [2022-11-18 21:10:23,629 INFO L131 PetriNetUnfolder]: For 1267/1267 co-relation queries the response was YES. [2022-11-18 21:10:23,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65153 conditions, 36124 events. 16816/36124 cut-off events. For 1267/1267 co-relation queries the response was YES. Maximal size of possible extension queue 1209. Compared 380946 event pairs, 12608 based on Foata normal form. 454/36161 useless extension candidates. Maximal degree in co-relation 65115. Up to 18954 conditions per place. [2022-11-18 21:10:23,977 INFO L137 encePairwiseOnDemand]: 197/202 looper letters, 60 selfloop transitions, 2 changer transitions 0/231 dead transitions. [2022-11-18 21:10:23,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 231 transitions, 712 flow [2022-11-18 21:10:23,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:10:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 21:10:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2022-11-18 21:10:23,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8894389438943895 [2022-11-18 21:10:23,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2022-11-18 21:10:23,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2022-11-18 21:10:23,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:23,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2022-11-18 21:10:23,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:23,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:23,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:23,987 INFO L175 Difference]: Start difference. First operand has 220 places, 210 transitions, 543 flow. Second operand 3 states and 539 transitions. [2022-11-18 21:10:23,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 231 transitions, 712 flow [2022-11-18 21:10:24,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 231 transitions, 702 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 21:10:24,042 INFO L231 Difference]: Finished difference. Result has 204 places, 210 transitions, 545 flow [2022-11-18 21:10:24,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=545, PETRI_PLACES=204, PETRI_TRANSITIONS=210} [2022-11-18 21:10:24,044 INFO L288 CegarLoopForPetriNet]: 196 programPoint places, 8 predicate places. [2022-11-18 21:10:24,044 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 210 transitions, 545 flow [2022-11-18 21:10:24,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:24,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:24,045 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:24,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 21:10:24,046 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 21:10:24,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:24,049 INFO L85 PathProgramCache]: Analyzing trace with hash -39028416, now seen corresponding path program 3 times [2022-11-18 21:10:24,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:24,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753064648] [2022-11-18 21:10:24,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:24,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:26,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:26,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753064648] [2022-11-18 21:10:26,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753064648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:26,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:26,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 21:10:26,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633154685] [2022-11-18 21:10:26,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:26,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:10:26,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:26,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:10:26,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:10:26,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 202 [2022-11-18 21:10:26,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 210 transitions, 545 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:26,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:26,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 202 [2022-11-18 21:10:26,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand