./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --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 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:22:21,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:22:21,310 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:22:21,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:22:21,316 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:22:21,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:22:21,359 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:22:21,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:22:21,361 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:22:21,361 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:22:21,362 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:22:21,363 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:22:21,363 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:22:21,364 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:22:21,365 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:22:21,365 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:22:21,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:22:21,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:22:21,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:22:21,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:22:21,368 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:22:21,368 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:22:21,369 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:22:21,369 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:22:21,370 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:22:21,370 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:22:21,371 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:22:21,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:22:21,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:22:21,372 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:22:21,373 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:22:21,373 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:22:21,385 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:22:21,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:22:21,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:22:21,386 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:22:21,386 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:22:21,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:22:21,387 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:22:21,387 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 [2023-11-12 02:22:21,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:22:21,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:22:21,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:22:21,816 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:22:21,817 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:22:21,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i [2023-11-12 02:22:24,995 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:22:25,344 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:22:25,344 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i [2023-11-12 02:22:25,363 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/bin/uautomizer-verify-uTZkv6EMXl/data/0444c7bfd/d23fb6b912744ab98a08571954724d78/FLAG53d3fa6e2 [2023-11-12 02:22:25,379 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/bin/uautomizer-verify-uTZkv6EMXl/data/0444c7bfd/d23fb6b912744ab98a08571954724d78 [2023-11-12 02:22:25,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:22:25,387 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:22:25,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:25,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:22:25,400 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:22:25,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:25" (1/1) ... [2023-11-12 02:22:25,402 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fca7499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:25, skipping insertion in model container [2023-11-12 02:22:25,402 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:25" (1/1) ... [2023-11-12 02:22:25,459 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:22:25,866 WARN L240 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_ceb245c6-266f-4217-831d-d1d6e238c710/sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2023-11-12 02:22:25,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:25,914 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:22:25,967 WARN L240 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_ceb245c6-266f-4217-831d-d1d6e238c710/sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2023-11-12 02:22:25,975 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:26,022 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:22:26,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:26 WrapperNode [2023-11-12 02:22:26,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:26,024 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:26,024 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:22:26,025 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:22:26,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:26" (1/1) ... [2023-11-12 02:22:26,054 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:26" (1/1) ... [2023-11-12 02:22:26,086 INFO L138 Inliner]: procedures = 170, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2023-11-12 02:22:26,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:26,093 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:22:26,094 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:22:26,094 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:22:26,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:26" (1/1) ... [2023-11-12 02:22:26,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:26" (1/1) ... [2023-11-12 02:22:26,107 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:26" (1/1) ... [2023-11-12 02:22:26,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:26" (1/1) ... [2023-11-12 02:22:26,116 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:26" (1/1) ... [2023-11-12 02:22:26,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:26" (1/1) ... [2023-11-12 02:22:26,142 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:26" (1/1) ... [2023-11-12 02:22:26,143 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:26" (1/1) ... [2023-11-12 02:22:26,146 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:22:26,157 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:22:26,157 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:22:26,157 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:22:26,158 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:26" (1/1) ... [2023-11-12 02:22:26,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:22:26,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:26,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:22:26,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:22:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:22:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:22:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:22:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:22:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:22:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-12 02:22:26,259 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-12 02:22:26,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:22:26,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:22:26,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:22:26,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:22:26,261 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:22:26,402 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:22:26,405 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:22:26,603 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:22:26,612 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:22:26,612 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-12 02:22:26,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:26 BoogieIcfgContainer [2023-11-12 02:22:26,615 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:22:26,617 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:22:26,617 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:22:26,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:22:26,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:22:25" (1/3) ... [2023-11-12 02:22:26,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a4eef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:22:26, skipping insertion in model container [2023-11-12 02:22:26,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:26" (2/3) ... [2023-11-12 02:22:26,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a4eef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:22:26, skipping insertion in model container [2023-11-12 02:22:26,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:26" (3/3) ... [2023-11-12 02:22:26,624 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_46-escape_racefree.i [2023-11-12 02:22:26,633 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:22:26,645 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:22:26,645 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:22:26,645 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:22:26,711 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 02:22:26,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 107 transitions, 221 flow [2023-11-12 02:22:26,825 INFO L124 PetriNetUnfolderBase]: 9/106 cut-off events. [2023-11-12 02:22:26,825 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:22:26,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 106 events. 9/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 161 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 57. Up to 3 conditions per place. [2023-11-12 02:22:26,831 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 107 transitions, 221 flow [2023-11-12 02:22:26,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 96 transitions, 195 flow [2023-11-12 02:22:26,841 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:22:26,852 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 96 transitions, 195 flow [2023-11-12 02:22:26,855 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 96 transitions, 195 flow [2023-11-12 02:22:26,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 96 transitions, 195 flow [2023-11-12 02:22:26,890 INFO L124 PetriNetUnfolderBase]: 9/96 cut-off events. [2023-11-12 02:22:26,890 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:22:26,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 96 events. 9/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 133 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 57. Up to 3 conditions per place. [2023-11-12 02:22:26,894 INFO L119 LiptonReduction]: Number of co-enabled transitions 1584 [2023-11-12 02:22:31,187 INFO L134 LiptonReduction]: Checked pairs total: 3417 [2023-11-12 02:22:31,187 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-11-12 02:22:31,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:22:31,228 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=LoopHeads, 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;@5613c204, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:22:31,228 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 02:22:31,233 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:22:31,233 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-12 02:22:31,233 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:22:31,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:31,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:22:31,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 02:22:31,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:31,244 INFO L85 PathProgramCache]: Analyzing trace with hash 375390176, now seen corresponding path program 1 times [2023-11-12 02:22:31,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:31,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383224558] [2023-11-12 02:22:31,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:31,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:31,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:31,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383224558] [2023-11-12 02:22:31,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383224558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:31,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:31,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:22:31,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849078871] [2023-11-12 02:22:31,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:31,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:22:31,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:31,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:22:31,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:22:31,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 190 [2023-11-12 02:22:31,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 26 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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) [2023-11-12 02:22:31,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:31,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 190 [2023-11-12 02:22:31,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:32,077 INFO L124 PetriNetUnfolderBase]: 54/143 cut-off events. [2023-11-12 02:22:32,079 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:22:32,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 143 events. 54/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 509 event pairs, 15 based on Foata normal form. 6/142 useless extension candidates. Maximal degree in co-relation 272. Up to 75 conditions per place. [2023-11-12 02:22:32,083 INFO L140 encePairwiseOnDemand]: 177/190 looper letters, 13 selfloop transitions, 2 changer transitions 12/28 dead transitions. [2023-11-12 02:22:32,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 28 transitions, 111 flow [2023-11-12 02:22:32,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:22:32,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:22:32,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-11-12 02:22:32,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5298245614035088 [2023-11-12 02:22:32,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-11-12 02:22:32,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-11-12 02:22:32,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:32,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-11-12 02:22:32,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2023-11-12 02:22:32,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-11-12 02:22:32,128 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-11-12 02:22:32,130 INFO L175 Difference]: Start difference. First operand has 22 places, 26 transitions, 55 flow. Second operand 3 states and 302 transitions. [2023-11-12 02:22:32,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 28 transitions, 111 flow [2023-11-12 02:22:32,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 28 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:22:32,135 INFO L231 Difference]: Finished difference. Result has 24 places, 14 transitions, 40 flow [2023-11-12 02:22:32,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2023-11-12 02:22:32,142 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 2 predicate places. [2023-11-12 02:22:32,142 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 40 flow [2023-11-12 02:22:32,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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) [2023-11-12 02:22:32,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:32,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:32,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:22:32,144 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 02:22:32,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:32,145 INFO L85 PathProgramCache]: Analyzing trace with hash 746064532, now seen corresponding path program 1 times [2023-11-12 02:22:32,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:32,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272954521] [2023-11-12 02:22:32,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:32,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:32,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:32,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:32,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272954521] [2023-11-12 02:22:32,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272954521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:32,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:32,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:22:32,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141947295] [2023-11-12 02:22:32,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:32,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:22:32,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:32,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:22:32,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:22:32,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 190 [2023-11-12 02:22:32,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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) [2023-11-12 02:22:32,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:32,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 190 [2023-11-12 02:22:32,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:32,577 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2023-11-12 02:22:32,577 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:22:32,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 16 events. 0/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 9/25 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2023-11-12 02:22:32,578 INFO L140 encePairwiseOnDemand]: 186/190 looper letters, 9 selfloop transitions, 4 changer transitions 0/14 dead transitions. [2023-11-12 02:22:32,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 14 transitions, 66 flow [2023-11-12 02:22:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:22:32,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:22:32,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2023-11-12 02:22:32,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2023-11-12 02:22:32,584 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2023-11-12 02:22:32,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2023-11-12 02:22:32,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:32,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2023-11-12 02:22:32,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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) [2023-11-12 02:22:32,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 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) [2023-11-12 02:22:32,591 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 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) [2023-11-12 02:22:32,591 INFO L175 Difference]: Start difference. First operand has 24 places, 14 transitions, 40 flow. Second operand 4 states and 375 transitions. [2023-11-12 02:22:32,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 14 transitions, 66 flow [2023-11-12 02:22:32,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 14 transitions, 60 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-12 02:22:32,592 INFO L231 Difference]: Finished difference. Result has 21 places, 14 transitions, 42 flow [2023-11-12 02:22:32,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=14} [2023-11-12 02:22:32,594 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2023-11-12 02:22:32,594 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 14 transitions, 42 flow [2023-11-12 02:22:32,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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) [2023-11-12 02:22:32,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:32,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:32,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:22:32,596 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-12 02:22:32,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:32,597 INFO L85 PathProgramCache]: Analyzing trace with hash 170289172, now seen corresponding path program 1 times [2023-11-12 02:22:32,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:32,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693707916] [2023-11-12 02:22:32,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:32,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:33,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:33,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693707916] [2023-11-12 02:22:33,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693707916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:33,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:33,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:22:33,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393216822] [2023-11-12 02:22:33,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:33,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:22:33,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:33,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:22:33,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:22:33,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 190 [2023-11-12 02:22:33,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 42 flow. Second operand has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 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) [2023-11-12 02:22:33,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:33,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 190 [2023-11-12 02:22:33,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:33,472 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-12 02:22:33,473 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:22:33,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 15 events. 0/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-11-12 02:22:33,474 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2023-11-12 02:22:33,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 15 transitions, 72 flow [2023-11-12 02:22:33,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:22:33,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:22:33,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 687 transitions. [2023-11-12 02:22:33,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519736842105263 [2023-11-12 02:22:33,479 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 687 transitions. [2023-11-12 02:22:33,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 687 transitions. [2023-11-12 02:22:33,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:33,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 687 transitions. [2023-11-12 02:22:33,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 85.875) internal successors, (687), 8 states have internal predecessors, (687), 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) [2023-11-12 02:22:33,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 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) [2023-11-12 02:22:33,490 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 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) [2023-11-12 02:22:33,490 INFO L175 Difference]: Start difference. First operand has 21 places, 14 transitions, 42 flow. Second operand 8 states and 687 transitions. [2023-11-12 02:22:33,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 15 transitions, 72 flow [2023-11-12 02:22:33,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 15 transitions, 65 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:22:33,492 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-11-12 02:22:33,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2023-11-12 02:22:33,494 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 2 predicate places. [2023-11-12 02:22:33,494 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-11-12 02:22:33,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 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) [2023-11-12 02:22:33,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-12 02:22:33,499 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-11-12 02:22:33,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:22:33,499 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-12 02:22:33,504 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:22:33,504 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:22:33,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:22:33 BasicIcfg [2023-11-12 02:22:33,509 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:22:33,510 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:22:33,510 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:22:33,510 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:22:33,511 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:22:26" (3/4) ... [2023-11-12 02:22:33,513 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:22:33,518 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-12 02:22:33,524 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-12 02:22:33,525 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:22:33,525 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:22:33,525 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:22:33,629 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:22:33,629 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:22:33,629 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:22:33,630 INFO L158 Benchmark]: Toolchain (without parser) took 8242.67ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 140.7MB in the beginning and 152.0MB in the end (delta: -11.3MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2023-11-12 02:22:33,630 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 127.9MB. Free memory is still 99.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:22:33,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 634.58ms. Allocated memory is still 172.0MB. Free memory was 139.9MB in the beginning and 120.1MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 02:22:33,631 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.99ms. Allocated memory is still 172.0MB. Free memory was 120.1MB in the beginning and 118.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:22:33,631 INFO L158 Benchmark]: Boogie Preprocessor took 63.06ms. Allocated memory is still 172.0MB. Free memory was 118.2MB in the beginning and 140.6MB in the end (delta: -22.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 02:22:33,632 INFO L158 Benchmark]: RCFGBuilder took 458.13ms. Allocated memory is still 172.0MB. Free memory was 140.6MB in the beginning and 125.1MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 02:22:33,632 INFO L158 Benchmark]: TraceAbstraction took 6892.37ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 125.1MB in the beginning and 156.2MB in the end (delta: -31.1MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2023-11-12 02:22:33,633 INFO L158 Benchmark]: Witness Printer took 119.48ms. Allocated memory is still 207.6MB. Free memory was 156.2MB in the beginning and 152.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:22:33,635 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 127.9MB. Free memory is still 99.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 634.58ms. Allocated memory is still 172.0MB. Free memory was 139.9MB in the beginning and 120.1MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.99ms. Allocated memory is still 172.0MB. Free memory was 120.1MB in the beginning and 118.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.06ms. Allocated memory is still 172.0MB. Free memory was 118.2MB in the beginning and 140.6MB in the end (delta: -22.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 458.13ms. Allocated memory is still 172.0MB. Free memory was 140.6MB in the beginning and 125.1MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6892.37ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 125.1MB in the beginning and 156.2MB in the end (delta: -31.1MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Witness Printer took 119.48ms. Allocated memory is still 207.6MB. Free memory was 156.2MB in the beginning and 152.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 91 PlacesBefore, 22 PlacesAfterwards, 96 TransitionsBefore, 26 TransitionsAfterwards, 1584 CoEnabledTransitionPairs, 7 FixpointIterations, 37 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 83 TotalNumberOfCompositions, 3417 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1617, independent: 1445, independent conditional: 0, independent unconditional: 1445, dependent: 172, dependent conditional: 0, dependent unconditional: 172, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 879, independent: 840, independent conditional: 0, independent unconditional: 840, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1617, independent: 605, independent conditional: 0, independent unconditional: 605, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 879, unknown conditional: 0, unknown unconditional: 879] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 691]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 128 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 278 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 161 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 464 IncrementalHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 16 mSDtfsCounter, 464 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 233 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 02:22:33,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceb245c6-266f-4217-831d-d1d6e238c710/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE