./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-lit/fk2012.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2abe2421-b893-411a-9b9a-9c00569e233e/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2abe2421-b893-411a-9b9a-9c00569e233e/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2abe2421-b893-411a-9b9a-9c00569e233e/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2abe2421-b893-411a-9b9a-9c00569e233e/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-lit/fk2012.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2abe2421-b893-411a-9b9a-9c00569e233e/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2abe2421-b893-411a-9b9a-9c00569e233e/bin/uautomizer-J5u9QxTXDZ --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 25a65bfeb78eff83ae0d8a23f733f9dc95190d8c8aa20c7c495d09a2bd7eb6f0 --- 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-dbf71c6-m [2022-10-17 10:11:22,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:11:22,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:11:22,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:11:22,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:11:22,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:11:22,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:11:22,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:11:22,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:11:22,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:11:22,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:11:22,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:11:22,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:11:22,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:11:22,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:11:22,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:11:22,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:11:22,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:11:22,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:11:22,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:11:22,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:11:22,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:11:22,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:11:22,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:11:22,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:11:22,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:11:22,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:11:22,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:11:22,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:11:22,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:11:22,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:11:22,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:11:22,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:11:22,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:11:22,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:11:22,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:11:22,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:11:22,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:11:22,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:11:22,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:11:22,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:11:22,370 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2abe2421-b893-411a-9b9a-9c00569e233e/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:11:22,398 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:11:22,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:11:22,399 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:11:22,399 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:11:22,400 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:11:22,400 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:11:22,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:11:22,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:11:22,401 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:11:22,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:11:22,401 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:11:22,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:11:22,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:11:22,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:11:22,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:11:22,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:11:22,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:11:22,403 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:11:22,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:11:22,403 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:11:22,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:11:22,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:11:22,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:11:22,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:11:22,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:11:22,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:11:22,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:11:22,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:11:22,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:11:22,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:11:22,406 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:11:22,406 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:11:22,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:11:22,406 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_2abe2421-b893-411a-9b9a-9c00569e233e/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2abe2421-b893-411a-9b9a-9c00569e233e/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25a65bfeb78eff83ae0d8a23f733f9dc95190d8c8aa20c7c495d09a2bd7eb6f0 [2022-10-17 10:11:22,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:11:22,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:11:22,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:11:22,689 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:11:22,690 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:11:22,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2abe2421-b893-411a-9b9a-9c00569e233e/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-lit/fk2012.i [2022-10-17 10:11:22,756 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2abe2421-b893-411a-9b9a-9c00569e233e/bin/uautomizer-J5u9QxTXDZ/data/b3755687b/17235a2c72d74abbad078a3febaad532/FLAG0837f143f [2022-10-17 10:11:23,257 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:11:23,257 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2abe2421-b893-411a-9b9a-9c00569e233e/sv-benchmarks/c/pthread-lit/fk2012.i [2022-10-17 10:11:23,278 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2abe2421-b893-411a-9b9a-9c00569e233e/bin/uautomizer-J5u9QxTXDZ/data/b3755687b/17235a2c72d74abbad078a3febaad532/FLAG0837f143f [2022-10-17 10:11:23,574 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2abe2421-b893-411a-9b9a-9c00569e233e/bin/uautomizer-J5u9QxTXDZ/data/b3755687b/17235a2c72d74abbad078a3febaad532 [2022-10-17 10:11:23,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:11:23,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:11:23,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:11:23,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:11:23,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:11:23,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:11:23" (1/1) ... [2022-10-17 10:11:23,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@409426c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:23, skipping insertion in model container [2022-10-17 10:11:23,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:11:23" (1/1) ... [2022-10-17 10:11:23,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:11:23,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:11:23,944 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2abe2421-b893-411a-9b9a-9c00569e233e/sv-benchmarks/c/pthread-lit/fk2012.i[800,813] [2022-10-17 10:11:24,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:11:24,349 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:11:24,362 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2abe2421-b893-411a-9b9a-9c00569e233e/sv-benchmarks/c/pthread-lit/fk2012.i[800,813] [2022-10-17 10:11:24,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:11:24,500 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:11:24,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:24 WrapperNode [2022-10-17 10:11:24,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:11:24,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:11:24,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:11:24,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:11:24,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:24" (1/1) ... [2022-10-17 10:11:24,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:24" (1/1) ... [2022-10-17 10:11:24,575 INFO L138 Inliner]: procedures = 277, calls = 35, calls flagged for inlining = 16, calls inlined = 21, statements flattened = 158 [2022-10-17 10:11:24,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:11:24,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:11:24,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:11:24,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:11:24,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:24" (1/1) ... [2022-10-17 10:11:24,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:24" (1/1) ... [2022-10-17 10:11:24,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:24" (1/1) ... [2022-10-17 10:11:24,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:24" (1/1) ... [2022-10-17 10:11:24,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:24" (1/1) ... [2022-10-17 10:11:24,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:24" (1/1) ... [2022-10-17 10:11:24,610 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:24" (1/1) ... [2022-10-17 10:11:24,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:24" (1/1) ... [2022-10-17 10:11:24,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:11:24,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:11:24,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:11:24,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:11:24,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:24" (1/1) ... [2022-10-17 10:11:24,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:11:24,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2abe2421-b893-411a-9b9a-9c00569e233e/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:11:24,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2abe2421-b893-411a-9b9a-9c00569e233e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:11:24,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2abe2421-b893-411a-9b9a-9c00569e233e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:11:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:11:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:11:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:11:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:11:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:11:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:11:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure producer [2022-10-17 10:11:24,703 INFO L138 BoogieDeclarations]: Found implementation of procedure producer [2022-10-17 10:11:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure consumer [2022-10-17 10:11:24,703 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer [2022-10-17 10:11:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:11:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:11:24,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:11:24,705 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:11:24,895 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:11:24,898 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:11:25,277 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:11:25,453 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:11:25,454 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-17 10:11:25,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:11:25 BoogieIcfgContainer [2022-10-17 10:11:25,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:11:25,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:11:25,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:11:25,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:11:25,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:11:23" (1/3) ... [2022-10-17 10:11:25,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2a2887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:11:25, skipping insertion in model container [2022-10-17 10:11:25,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:24" (2/3) ... [2022-10-17 10:11:25,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2a2887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:11:25, skipping insertion in model container [2022-10-17 10:11:25,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:11:25" (3/3) ... [2022-10-17 10:11:25,476 INFO L112 eAbstractionObserver]: Analyzing ICFG fk2012.i [2022-10-17 10:11:25,496 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:11:25,509 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:11:25,510 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:11:25,510 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:11:25,592 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:11:25,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 119 transitions, 248 flow [2022-10-17 10:11:25,780 INFO L130 PetriNetUnfolder]: 19/258 cut-off events. [2022-10-17 10:11:25,781 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:11:25,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 258 events. 19/258 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 960 event pairs, 1 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 120. Up to 8 conditions per place. [2022-10-17 10:11:25,791 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 119 transitions, 248 flow [2022-10-17 10:11:25,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 119 transitions, 248 flow [2022-10-17 10:11:25,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:11:25,818 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;@1139dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:11:25,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:11:25,841 INFO L130 PetriNetUnfolder]: 6/116 cut-off events. [2022-10-17 10:11:25,841 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:11:25,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:11:25,842 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:11:25,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:11:25,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:25,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1899735342, now seen corresponding path program 1 times [2022-10-17 10:11:25,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:25,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184610290] [2022-10-17 10:11:25,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:25,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:11:25,986 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:11:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:11:26,100 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:11:26,103 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:11:26,105 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-10-17 10:11:26,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-10-17 10:11:26,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-10-17 10:11:26,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location consumerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-10-17 10:11:26,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:11:26,111 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-17 10:11:26,122 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 10:11:26,122 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-10-17 10:11:26,212 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:11:26,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 192 transitions, 408 flow [2022-10-17 10:11:26,448 INFO L130 PetriNetUnfolder]: 55/668 cut-off events. [2022-10-17 10:11:26,448 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-10-17 10:11:26,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 668 events. 55/668 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3748 event pairs, 4 based on Foata normal form. 0/593 useless extension candidates. Maximal degree in co-relation 437. Up to 18 conditions per place. [2022-10-17 10:11:26,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 192 transitions, 408 flow [2022-10-17 10:11:26,477 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 192 transitions, 408 flow [2022-10-17 10:11:26,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:11:26,485 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;@1139dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:11:26,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-10-17 10:11:26,511 INFO L130 PetriNetUnfolder]: 9/134 cut-off events. [2022-10-17 10:11:26,511 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 10:11:26,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:11:26,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:11:26,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting consumerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:11:26,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:26,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1878419085, now seen corresponding path program 1 times [2022-10-17 10:11:26,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:26,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255357744] [2022-10-17 10:11:26,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:26,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:26,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:26,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255357744] [2022-10-17 10:11:26,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255357744] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:26,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:26,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:11:26,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062526815] [2022-10-17 10:11:26,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:26,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:11:26,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:26,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:11:26,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:11:26,823 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 192 [2022-10-17 10:11:26,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 192 transitions, 408 flow. Second operand has 2 states, 2 states have (on average 159.0) internal successors, (318), 2 states have internal predecessors, (318), 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) [2022-10-17 10:11:26,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:11:26,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 192 [2022-10-17 10:11:26,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:11:32,780 INFO L130 PetriNetUnfolder]: 6118/21281 cut-off events. [2022-10-17 10:11:32,781 INFO L131 PetriNetUnfolder]: For 1209/1209 co-relation queries the response was YES. [2022-10-17 10:11:33,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30506 conditions, 21281 events. 6118/21281 cut-off events. For 1209/1209 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 267377 event pairs, 4882 based on Foata normal form. 4470/24484 useless extension candidates. Maximal degree in co-relation 12879. Up to 7927 conditions per place. [2022-10-17 10:11:33,334 INFO L137 encePairwiseOnDemand]: 182/192 looper letters, 22 selfloop transitions, 0 changer transitions 0/174 dead transitions. [2022-10-17 10:11:33,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 174 transitions, 416 flow [2022-10-17 10:11:33,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:11:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:11:33,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 348 transitions. [2022-10-17 10:11:33,362 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.90625 [2022-10-17 10:11:33,366 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 348 transitions. [2022-10-17 10:11:33,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 348 transitions. [2022-10-17 10:11:33,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:11:33,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 348 transitions. [2022-10-17 10:11:33,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 174.0) internal successors, (348), 2 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:33,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:33,392 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:11:33,394 INFO L175 Difference]: Start difference. First operand has 186 places, 192 transitions, 408 flow. Second operand 2 states and 348 transitions. [2022-10-17 10:11:33,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 174 transitions, 416 flow [2022-10-17 10:11:33,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 174 transitions, 412 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-10-17 10:11:33,416 INFO L231 Difference]: Finished difference. Result has 178 places, 174 transitions, 368 flow [2022-10-17 10:11:33,419 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=368, PETRI_PLACES=178, PETRI_TRANSITIONS=174} [2022-10-17 10:11:33,423 INFO L287 CegarLoopForPetriNet]: 186 programPoint places, -8 predicate places. [2022-10-17 10:11:33,424 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 174 transitions, 368 flow [2022-10-17 10:11:33,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 159.0) internal successors, (318), 2 states have internal predecessors, (318), 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) [2022-10-17 10:11:33,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:11:33,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:11:33,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:11:33,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting consumerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:11:33,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:33,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1519448633, now seen corresponding path program 1 times [2022-10-17 10:11:33,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:33,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125315592] [2022-10-17 10:11:33,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:33,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:33,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:33,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125315592] [2022-10-17 10:11:33,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125315592] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:33,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:33,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:11:33,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032445216] [2022-10-17 10:11:33,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:33,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:11:33,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:33,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:11:33,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:11:33,660 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 192 [2022-10-17 10:11:33,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 174 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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) [2022-10-17 10:11:33,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:11:33,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 192 [2022-10-17 10:11:33,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand