./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-semi1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9218b300-7315-4ee8-b8ee-b95053c2ae79/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9218b300-7315-4ee8-b8ee-b95053c2ae79/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9218b300-7315-4ee8-b8ee-b95053c2ae79/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9218b300-7315-4ee8-b8ee-b95053c2ae79/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-semi1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9218b300-7315-4ee8-b8ee-b95053c2ae79/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9218b300-7315-4ee8-b8ee-b95053c2ae79/bin/uautomizer-verify-WvqO1wxjHP --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 e1fb758430fdab5e598998cc874ea93afa2de5f622c2b42d836b77952562e01f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:02:27,285 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:02:27,355 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9218b300-7315-4ee8-b8ee-b95053c2ae79/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:02:27,360 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:02:27,361 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:02:27,387 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:02:27,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:02:27,388 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:02:27,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:02:27,389 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:02:27,390 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:02:27,391 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:02:27,391 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:02:27,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:02:27,392 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:02:27,393 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:02:27,393 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:02:27,394 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:02:27,394 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:02:27,395 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:02:27,395 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:02:27,396 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:02:27,396 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:02:27,397 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:02:27,397 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:02:27,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:02:27,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:02:27,399 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:02:27,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:02:27,400 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:02:27,400 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:02:27,401 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:02:27,401 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:02:27,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:02:27,402 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:02:27,402 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:02:27,402 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:02:27,403 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:02:27,403 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:02:27,404 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_9218b300-7315-4ee8-b8ee-b95053c2ae79/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9218b300-7315-4ee8-b8ee-b95053c2ae79/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1fb758430fdab5e598998cc874ea93afa2de5f622c2b42d836b77952562e01f [2023-11-06 23:02:27,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:02:27,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:02:27,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:02:27,677 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:02:27,678 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:02:27,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9218b300-7315-4ee8-b8ee-b95053c2ae79/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/test-semi1.wvr.c [2023-11-06 23:02:30,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:02:31,048 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:02:31,049 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9218b300-7315-4ee8-b8ee-b95053c2ae79/sv-benchmarks/c/weaver/test-semi1.wvr.c [2023-11-06 23:02:31,059 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9218b300-7315-4ee8-b8ee-b95053c2ae79/bin/uautomizer-verify-WvqO1wxjHP/data/2c5e5a336/a94ba0d9d3604e51a9de8fb02452e57e/FLAG8d73a6822 [2023-11-06 23:02:31,075 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9218b300-7315-4ee8-b8ee-b95053c2ae79/bin/uautomizer-verify-WvqO1wxjHP/data/2c5e5a336/a94ba0d9d3604e51a9de8fb02452e57e [2023-11-06 23:02:31,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:02:31,082 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:02:31,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:02:31,084 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:02:31,092 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:02:31,093 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:02:31" (1/1) ... [2023-11-06 23:02:31,094 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1121dbf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:31, skipping insertion in model container [2023-11-06 23:02:31,095 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:02:31" (1/1) ... [2023-11-06 23:02:31,130 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:02:31,299 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_9218b300-7315-4ee8-b8ee-b95053c2ae79/sv-benchmarks/c/weaver/test-semi1.wvr.c[1979,1992] [2023-11-06 23:02:31,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:02:31,313 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:02:31,333 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_9218b300-7315-4ee8-b8ee-b95053c2ae79/sv-benchmarks/c/weaver/test-semi1.wvr.c[1979,1992] [2023-11-06 23:02:31,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:02:31,343 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:02:31,343 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:02:31,351 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:02:31,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:31 WrapperNode [2023-11-06 23:02:31,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:02:31,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:02:31,354 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:02:31,354 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:02:31,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:31" (1/1) ... [2023-11-06 23:02:31,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:31" (1/1) ... [2023-11-06 23:02:31,391 INFO L138 Inliner]: procedures = 21, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 72 [2023-11-06 23:02:31,392 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:02:31,392 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:02:31,393 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:02:31,393 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:02:31,403 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:31" (1/1) ... [2023-11-06 23:02:31,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:31" (1/1) ... [2023-11-06 23:02:31,406 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:31" (1/1) ... [2023-11-06 23:02:31,406 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:31" (1/1) ... [2023-11-06 23:02:31,412 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:31" (1/1) ... [2023-11-06 23:02:31,414 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:31" (1/1) ... [2023-11-06 23:02:31,415 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:31" (1/1) ... [2023-11-06 23:02:31,417 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:31" (1/1) ... [2023-11-06 23:02:31,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:02:31,420 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:02:31,420 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:02:31,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:02:31,421 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:31" (1/1) ... [2023-11-06 23:02:31,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:02:31,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9218b300-7315-4ee8-b8ee-b95053c2ae79/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:31,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9218b300-7315-4ee8-b8ee-b95053c2ae79/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:02:31,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9218b300-7315-4ee8-b8ee-b95053c2ae79/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:02:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:02:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 23:02:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 23:02:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 23:02:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 23:02:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:02:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:02:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:02:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 23:02:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 23:02:31,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:02:31,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:02:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:02:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:02:31,538 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:02:31,675 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:02:31,677 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:02:31,896 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:02:31,942 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:02:31,942 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 23:02:31,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:31 BoogieIcfgContainer [2023-11-06 23:02:31,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:02:31,949 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:02:31,949 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:02:31,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:02:31,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:02:31" (1/3) ... [2023-11-06 23:02:31,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40875254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:02:31, skipping insertion in model container [2023-11-06 23:02:31,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:31" (2/3) ... [2023-11-06 23:02:31,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40875254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:02:31, skipping insertion in model container [2023-11-06 23:02:31,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:31" (3/3) ... [2023-11-06 23:02:31,957 INFO L112 eAbstractionObserver]: Analyzing ICFG test-semi1.wvr.c [2023-11-06 23:02:31,967 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:02:31,981 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:02:31,981 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:02:31,981 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:02:32,058 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 23:02:32,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 80 transitions, 174 flow [2023-11-06 23:02:32,167 INFO L124 PetriNetUnfolderBase]: 3/78 cut-off events. [2023-11-06 23:02:32,167 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:02:32,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 78 events. 3/78 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 18 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-06 23:02:32,172 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 80 transitions, 174 flow [2023-11-06 23:02:32,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 69 transitions, 150 flow [2023-11-06 23:02:32,180 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:02:32,191 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 69 transitions, 150 flow [2023-11-06 23:02:32,194 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 69 transitions, 150 flow [2023-11-06 23:02:32,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 69 transitions, 150 flow [2023-11-06 23:02:32,220 INFO L124 PetriNetUnfolderBase]: 3/69 cut-off events. [2023-11-06 23:02:32,220 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:02:32,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 69 events. 3/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 17 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-06 23:02:32,222 INFO L119 LiptonReduction]: Number of co-enabled transitions 108 [2023-11-06 23:02:34,914 INFO L134 LiptonReduction]: Checked pairs total: 173 [2023-11-06 23:02:34,914 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-11-06 23:02:34,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:02:34,939 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;@7f49ce94, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:02:34,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-06 23:02:34,945 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:02:34,946 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-06 23:02:34,946 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:02:34,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:34,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:34,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 23:02:34,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:34,954 INFO L85 PathProgramCache]: Analyzing trace with hash 286799163, now seen corresponding path program 1 times [2023-11-06 23:02:34,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:34,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599261190] [2023-11-06 23:02:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:34,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:35,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:02:35,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:35,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599261190] [2023-11-06 23:02:35,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599261190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:35,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:35,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:35,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237577294] [2023-11-06 23:02:35,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:35,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:02:35,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:35,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:02:35,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:02:35,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 150 [2023-11-06 23:02:35,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 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) [2023-11-06 23:02:35,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:35,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 150 [2023-11-06 23:02:35,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:35,654 INFO L124 PetriNetUnfolderBase]: 8/32 cut-off events. [2023-11-06 23:02:35,655 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 23:02:35,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 32 events. 8/32 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 1 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 45. Up to 13 conditions per place. [2023-11-06 23:02:35,657 INFO L140 encePairwiseOnDemand]: 146/150 looper letters, 10 selfloop transitions, 2 changer transitions 10/22 dead transitions. [2023-11-06 23:02:35,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 22 transitions, 112 flow [2023-11-06 23:02:35,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:02:35,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:02:35,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 287 transitions. [2023-11-06 23:02:35,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47833333333333333 [2023-11-06 23:02:35,675 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 287 transitions. [2023-11-06 23:02:35,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 287 transitions. [2023-11-06 23:02:35,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:35,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 287 transitions. [2023-11-06 23:02:35,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 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) [2023-11-06 23:02:35,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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) [2023-11-06 23:02:35,691 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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) [2023-11-06 23:02:35,693 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 34 flow. Second operand 4 states and 287 transitions. [2023-11-06 23:02:35,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 22 transitions, 112 flow [2023-11-06 23:02:35,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 22 transitions, 96 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 23:02:35,698 INFO L231 Difference]: Finished difference. Result has 18 places, 11 transitions, 36 flow [2023-11-06 23:02:35,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=36, PETRI_PLACES=18, PETRI_TRANSITIONS=11} [2023-11-06 23:02:35,704 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 0 predicate places. [2023-11-06 23:02:35,705 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 11 transitions, 36 flow [2023-11-06 23:02:35,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 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) [2023-11-06 23:02:35,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:35,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:35,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:02:35,707 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 23:02:35,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:35,707 INFO L85 PathProgramCache]: Analyzing trace with hash 577643723, now seen corresponding path program 2 times [2023-11-06 23:02:35,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:35,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064956392] [2023-11-06 23:02:35,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:35,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:02:35,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:35,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064956392] [2023-11-06 23:02:35,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064956392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:35,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:35,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:35,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705896757] [2023-11-06 23:02:35,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:35,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:02:35,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:35,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:02:35,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:02:35,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 150 [2023-11-06 23:02:35,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 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) [2023-11-06 23:02:35,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:35,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 150 [2023-11-06 23:02:35,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:35,959 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-11-06 23:02:35,959 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 23:02:35,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 14 events. 2/14 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 1 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 17. Up to 11 conditions per place. [2023-11-06 23:02:35,961 INFO L140 encePairwiseOnDemand]: 146/150 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-11-06 23:02:35,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 11 transitions, 56 flow [2023-11-06 23:02:35,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:02:35,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:02:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2023-11-06 23:02:35,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2023-11-06 23:02:35,970 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 276 transitions. [2023-11-06 23:02:35,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 276 transitions. [2023-11-06 23:02:35,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:35,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 276 transitions. [2023-11-06 23:02:35,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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) [2023-11-06 23:02:35,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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) [2023-11-06 23:02:35,983 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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) [2023-11-06 23:02:35,983 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 36 flow. Second operand 4 states and 276 transitions. [2023-11-06 23:02:35,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 11 transitions, 56 flow [2023-11-06 23:02:35,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 50 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 23:02:35,985 INFO L231 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2023-11-06 23:02:35,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2023-11-06 23:02:35,987 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -2 predicate places. [2023-11-06 23:02:35,987 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2023-11-06 23:02:35,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 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) [2023-11-06 23:02:35,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-06 23:02:35,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-06 23:02:35,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-06 23:02:35,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:02:35,999 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2023-11-06 23:02:36,011 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 23:02:36,011 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:02:36,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:02:36 BasicIcfg [2023-11-06 23:02:36,023 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:02:36,023 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:02:36,023 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:02:36,024 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:02:36,024 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:31" (3/4) ... [2023-11-06 23:02:36,026 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 23:02:36,030 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 23:02:36,030 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 23:02:36,039 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-06 23:02:36,039 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 23:02:36,040 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 23:02:36,040 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 23:02:36,114 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9218b300-7315-4ee8-b8ee-b95053c2ae79/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:02:36,114 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9218b300-7315-4ee8-b8ee-b95053c2ae79/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 23:02:36,115 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:02:36,115 INFO L158 Benchmark]: Toolchain (without parser) took 5034.08ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 111.3MB in the beginning and 90.6MB in the end (delta: 20.7MB). Peak memory consumption was 54.0MB. Max. memory is 16.1GB. [2023-11-06 23:02:36,116 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 113.2MB. Free memory is still 62.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:02:36,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.07ms. Allocated memory is still 151.0MB. Free memory was 111.3MB in the beginning and 100.3MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 23:02:36,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.40ms. Allocated memory is still 151.0MB. Free memory was 100.3MB in the beginning and 98.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:02:36,117 INFO L158 Benchmark]: Boogie Preprocessor took 26.84ms. Allocated memory is still 151.0MB. Free memory was 98.8MB in the beginning and 97.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:02:36,117 INFO L158 Benchmark]: RCFGBuilder took 525.79ms. Allocated memory is still 151.0MB. Free memory was 97.5MB in the beginning and 83.2MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 23:02:36,118 INFO L158 Benchmark]: TraceAbstraction took 4073.92ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 82.6MB in the beginning and 93.8MB in the end (delta: -11.2MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2023-11-06 23:02:36,118 INFO L158 Benchmark]: Witness Printer took 91.50ms. Allocated memory is still 182.5MB. Free memory was 93.8MB in the beginning and 90.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:02:36,120 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 113.2MB. Free memory is still 62.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.07ms. Allocated memory is still 151.0MB. Free memory was 111.3MB in the beginning and 100.3MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.40ms. Allocated memory is still 151.0MB. Free memory was 100.3MB in the beginning and 98.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.84ms. Allocated memory is still 151.0MB. Free memory was 98.8MB in the beginning and 97.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 525.79ms. Allocated memory is still 151.0MB. Free memory was 97.5MB in the beginning and 83.2MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4073.92ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 82.6MB in the beginning and 93.8MB in the end (delta: -11.2MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. * Witness Printer took 91.50ms. Allocated memory is still 182.5MB. Free memory was 93.8MB in the beginning and 90.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 73 PlacesBefore, 18 PlacesAfterwards, 69 TransitionsBefore, 11 TransitionsAfterwards, 108 CoEnabledTransitionPairs, 6 FixpointIterations, 45 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 70 TotalNumberOfCompositions, 173 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 149, independent: 136, independent conditional: 0, independent unconditional: 136, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 62, independent: 59, independent conditional: 0, independent unconditional: 59, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 149, independent: 77, independent conditional: 0, independent unconditional: 77, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 62, unknown conditional: 0, unknown unconditional: 62] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 72]: 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 5 procedures, 88 locations, 3 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: 3.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89 IncrementalHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 89 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=1, InterpolantAutomatonStates: 8, 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, 0.6s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 74 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2023-11-06 23:02:36,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9218b300-7315-4ee8-b8ee-b95053c2ae79/bin/uautomizer-verify-WvqO1wxjHP/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