./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_d8c93c73-d31a-4bfc-90af-f6e453e965cd/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c93c73-d31a-4bfc-90af-f6e453e965cd/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c93c73-d31a-4bfc-90af-f6e453e965cd/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c93c73-d31a-4bfc-90af-f6e453e965cd/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c93c73-d31a-4bfc-90af-f6e453e965cd/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c93c73-d31a-4bfc-90af-f6e453e965cd/bin/uautomizer-verify-4GaUIPS5ZU --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 f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:59:20,058 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:59:20,141 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c93c73-d31a-4bfc-90af-f6e453e965cd/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 21:59:20,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:59:20,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:59:20,186 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:59:20,187 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:59:20,187 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:59:20,188 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:59:20,188 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:59:20,188 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:59:20,189 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:59:20,190 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:59:20,192 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:59:20,193 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:59:20,193 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:59:20,195 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:59:20,198 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:59:20,199 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:59:20,199 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:59:20,199 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:59:20,201 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:59:20,202 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:59:20,202 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:59:20,202 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:59:20,203 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:59:20,203 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:59:20,203 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:59:20,204 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:59:20,204 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:59:20,204 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:59:20,204 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:59:20,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:59:20,205 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:59:20,206 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:59:20,206 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:59:20,207 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:59:20,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:59:20,207 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:59:20,208 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:59:20,208 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:59:20,209 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:59:20,209 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_d8c93c73-d31a-4bfc-90af-f6e453e965cd/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c93c73-d31a-4bfc-90af-f6e453e965cd/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f [2024-10-31 21:59:20,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:59:20,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:59:20,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:59:20,532 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:59:20,533 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:59:20,534 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c93c73-d31a-4bfc-90af-f6e453e965cd/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-wmm/safe017_tso.i Unable to find full path for "g++" [2024-10-31 21:59:22,644 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:59:22,949 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:59:22,950 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c93c73-d31a-4bfc-90af-f6e453e965cd/sv-benchmarks/c/pthread-wmm/safe017_tso.i [2024-10-31 21:59:22,975 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c93c73-d31a-4bfc-90af-f6e453e965cd/bin/uautomizer-verify-4GaUIPS5ZU/data/98407db4f/bbf60dc8d23e456d8bd4103467b6ad10/FLAG221f0b76b [2024-10-31 21:59:22,992 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c93c73-d31a-4bfc-90af-f6e453e965cd/bin/uautomizer-verify-4GaUIPS5ZU/data/98407db4f/bbf60dc8d23e456d8bd4103467b6ad10 [2024-10-31 21:59:22,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:59:22,997 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:59:23,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:59:23,001 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:59:23,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:59:23,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:59:22" (1/1) ... [2024-10-31 21:59:23,012 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d33cb33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:23, skipping insertion in model container [2024-10-31 21:59:23,013 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:59:22" (1/1) ... [2024-10-31 21:59:23,078 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:59:23,343 WARN L251 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_d8c93c73-d31a-4bfc-90af-f6e453e965cd/sv-benchmarks/c/pthread-wmm/safe017_tso.i[945,958] [2024-10-31 21:59:23,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:59:23,635 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:59:23,653 WARN L251 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_d8c93c73-d31a-4bfc-90af-f6e453e965cd/sv-benchmarks/c/pthread-wmm/safe017_tso.i[945,958] [2024-10-31 21:59:23,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:59:23,750 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:59:23,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:23 WrapperNode [2024-10-31 21:59:23,751 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:59:23,752 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:59:23,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:59:23,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:59:23,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:23" (1/1) ... [2024-10-31 21:59:23,781 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:23" (1/1) ... [2024-10-31 21:59:23,812 INFO L138 Inliner]: procedures = 175, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2024-10-31 21:59:23,814 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:59:23,815 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:59:23,816 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:59:23,816 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:59:23,830 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:23" (1/1) ... [2024-10-31 21:59:23,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:23" (1/1) ... [2024-10-31 21:59:23,835 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:23" (1/1) ... [2024-10-31 21:59:23,893 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 21:59:23,894 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:23" (1/1) ... [2024-10-31 21:59:23,894 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:23" (1/1) ... [2024-10-31 21:59:23,901 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:23" (1/1) ... [2024-10-31 21:59:23,906 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:23" (1/1) ... [2024-10-31 21:59:23,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:23" (1/1) ... [2024-10-31 21:59:23,912 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:23" (1/1) ... [2024-10-31 21:59:23,918 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:59:23,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:59:23,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:59:23,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:59:23,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:23" (1/1) ... [2024-10-31 21:59:23,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:59:23,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c93c73-d31a-4bfc-90af-f6e453e965cd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:23,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c93c73-d31a-4bfc-90af-f6e453e965cd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:24,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c93c73-d31a-4bfc-90af-f6e453e965cd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:59:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 21:59:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:59:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-31 21:59:24,041 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-31 21:59:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-31 21:59:24,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-31 21:59:24,042 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-31 21:59:24,044 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-31 21:59:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:59:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 21:59:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:59:24,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:59:24,047 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 21:59:24,249 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:59:24,252 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:59:24,460 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 21:59:24,460 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:59:24,558 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:59:24,558 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 21:59:24,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:59:24 BoogieIcfgContainer [2024-10-31 21:59:24,560 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:59:24,564 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:59:24,564 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:59:24,568 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:59:24,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:59:22" (1/3) ... [2024-10-31 21:59:24,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d06cfce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:59:24, skipping insertion in model container [2024-10-31 21:59:24,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:23" (2/3) ... [2024-10-31 21:59:24,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d06cfce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:59:24, skipping insertion in model container [2024-10-31 21:59:24,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:59:24" (3/3) ... [2024-10-31 21:59:24,575 INFO L112 eAbstractionObserver]: Analyzing ICFG safe017_tso.i [2024-10-31 21:59:24,598 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:59:24,599 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 21:59:24,599 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 21:59:24,674 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 21:59:24,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 37 transitions, 86 flow [2024-10-31 21:59:24,759 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-10-31 21:59:24,760 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 21:59:24,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-10-31 21:59:24,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 37 transitions, 86 flow [2024-10-31 21:59:24,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-10-31 21:59:24,781 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:59:24,789 INFO L333 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, 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;@323dbb33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:59:24,790 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 21:59:24,804 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:59:24,805 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-10-31 21:59:24,805 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 21:59:24,806 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:59:24,806 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:24,807 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:59:24,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:24,816 INFO L85 PathProgramCache]: Analyzing trace with hash 586073047, now seen corresponding path program 1 times [2024-10-31 21:59:24,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:24,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064608483] [2024-10-31 21:59:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:24,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:25,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:25,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064608483] [2024-10-31 21:59:25,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064608483] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:25,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:25,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:59:25,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439712481] [2024-10-31 21:59:25,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:25,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:59:25,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:25,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:59:25,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:59:25,539 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-10-31 21:59:25,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2024-10-31 21:59:25,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:59:25,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-10-31 21:59:25,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:59:25,787 INFO L124 PetriNetUnfolderBase]: 291/590 cut-off events. [2024-10-31 21:59:25,788 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-31 21:59:25,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 590 events. 291/590 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3205 event pairs, 58 based on Foata normal form. 27/609 useless extension candidates. Maximal degree in co-relation 1085. Up to 236 conditions per place. [2024-10-31 21:59:25,802 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 25 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2024-10-31 21:59:25,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 169 flow [2024-10-31 21:59:25,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:59:25,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:59:25,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-10-31 21:59:25,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7364864864864865 [2024-10-31 21:59:25,832 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 4 states and 109 transitions. [2024-10-31 21:59:25,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 169 flow [2024-10-31 21:59:25,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 21:59:25,842 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 102 flow [2024-10-31 21:59:25,845 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2024-10-31 21:59:25,849 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2024-10-31 21:59:25,852 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 102 flow [2024-10-31 21:59:25,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2024-10-31 21:59:25,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:59:25,854 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:25,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:59:25,854 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:59:25,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:25,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1966305515, now seen corresponding path program 1 times [2024-10-31 21:59:25,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:25,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232742685] [2024-10-31 21:59:25,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:25,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:26,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:26,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:26,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232742685] [2024-10-31 21:59:26,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232742685] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:26,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:26,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:59:26,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667976683] [2024-10-31 21:59:26,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:26,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:59:26,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:26,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:59:26,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:59:26,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-10-31 21:59:26,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-10-31 21:59:26,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:59:26,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-10-31 21:59:26,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:59:26,400 INFO L124 PetriNetUnfolderBase]: 249/505 cut-off events. [2024-10-31 21:59:26,400 INFO L125 PetriNetUnfolderBase]: For 173/176 co-relation queries the response was YES. [2024-10-31 21:59:26,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 505 events. 249/505 cut-off events. For 173/176 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2477 event pairs, 15 based on Foata normal form. 28/526 useless extension candidates. Maximal degree in co-relation 1171. Up to 188 conditions per place. [2024-10-31 21:59:26,407 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 31 selfloop transitions, 8 changer transitions 1/55 dead transitions. [2024-10-31 21:59:26,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 245 flow [2024-10-31 21:59:26,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:59:26,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:59:26,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-10-31 21:59:26,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7405405405405405 [2024-10-31 21:59:26,410 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 102 flow. Second operand 5 states and 137 transitions. [2024-10-31 21:59:26,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 245 flow [2024-10-31 21:59:26,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 235 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-31 21:59:26,414 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 142 flow [2024-10-31 21:59:26,414 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-10-31 21:59:26,415 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2024-10-31 21:59:26,415 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 142 flow [2024-10-31 21:59:26,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-10-31 21:59:26,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:59:26,416 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:26,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:59:26,417 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:59:26,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:26,418 INFO L85 PathProgramCache]: Analyzing trace with hash -3298757, now seen corresponding path program 1 times [2024-10-31 21:59:26,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:26,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269105954] [2024-10-31 21:59:26,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:26,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:26,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:26,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:26,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269105954] [2024-10-31 21:59:26,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269105954] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:26,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:26,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:59:26,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317060552] [2024-10-31 21:59:26,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:26,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:59:26,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:26,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:59:26,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:59:26,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-10-31 21:59:26,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-10-31 21:59:26,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:59:26,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-10-31 21:59:26,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:59:26,879 INFO L124 PetriNetUnfolderBase]: 174/340 cut-off events. [2024-10-31 21:59:26,880 INFO L125 PetriNetUnfolderBase]: For 358/364 co-relation queries the response was YES. [2024-10-31 21:59:26,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 340 events. 174/340 cut-off events. For 358/364 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1274 event pairs, 6 based on Foata normal form. 24/357 useless extension candidates. Maximal degree in co-relation 925. Up to 108 conditions per place. [2024-10-31 21:59:26,884 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 29 selfloop transitions, 11 changer transitions 1/56 dead transitions. [2024-10-31 21:59:26,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 56 transitions, 272 flow [2024-10-31 21:59:26,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:59:26,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 21:59:26,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-10-31 21:59:26,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7072072072072072 [2024-10-31 21:59:26,890 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 142 flow. Second operand 6 states and 157 transitions. [2024-10-31 21:59:26,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 56 transitions, 272 flow [2024-10-31 21:59:26,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 247 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-31 21:59:26,898 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 156 flow [2024-10-31 21:59:26,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2024-10-31 21:59:26,899 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-10-31 21:59:26,899 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 156 flow [2024-10-31 21:59:26,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-10-31 21:59:26,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:59:26,901 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:26,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:59:26,901 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:59:26,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:26,902 INFO L85 PathProgramCache]: Analyzing trace with hash -369632018, now seen corresponding path program 1 times [2024-10-31 21:59:26,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:26,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008422511] [2024-10-31 21:59:26,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:26,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:27,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:27,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008422511] [2024-10-31 21:59:27,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008422511] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:27,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:27,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:59:27,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494149517] [2024-10-31 21:59:27,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:27,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:59:27,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:27,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:59:27,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:59:27,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-10-31 21:59:27,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2024-10-31 21:59:27,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:59:27,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-10-31 21:59:27,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:59:27,436 INFO L124 PetriNetUnfolderBase]: 465/918 cut-off events. [2024-10-31 21:59:27,436 INFO L125 PetriNetUnfolderBase]: For 425/434 co-relation queries the response was YES. [2024-10-31 21:59:27,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2119 conditions, 918 events. 465/918 cut-off events. For 425/434 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4968 event pairs, 171 based on Foata normal form. 8/846 useless extension candidates. Maximal degree in co-relation 2104. Up to 388 conditions per place. [2024-10-31 21:59:27,443 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 24 selfloop transitions, 6 changer transitions 11/59 dead transitions. [2024-10-31 21:59:27,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 294 flow [2024-10-31 21:59:27,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:59:27,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:59:27,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-10-31 21:59:27,446 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6594594594594595 [2024-10-31 21:59:27,446 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 156 flow. Second operand 5 states and 122 transitions. [2024-10-31 21:59:27,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 294 flow [2024-10-31 21:59:27,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 59 transitions, 230 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-10-31 21:59:27,453 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 146 flow [2024-10-31 21:59:27,453 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-10-31 21:59:27,454 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-10-31 21:59:27,454 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 146 flow [2024-10-31 21:59:27,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2024-10-31 21:59:27,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:59:27,455 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:27,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 21:59:27,455 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:59:27,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:27,456 INFO L85 PathProgramCache]: Analyzing trace with hash 959879212, now seen corresponding path program 2 times [2024-10-31 21:59:27,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:27,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046984365] [2024-10-31 21:59:27,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:27,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:27,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:27,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:27,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046984365] [2024-10-31 21:59:27,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046984365] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:27,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:27,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 21:59:27,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272304816] [2024-10-31 21:59:27,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:27,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 21:59:27,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:27,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 21:59:27,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:59:27,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-10-31 21:59:27,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 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) [2024-10-31 21:59:27,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:59:27,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-10-31 21:59:27,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:59:28,074 INFO L124 PetriNetUnfolderBase]: 651/1340 cut-off events. [2024-10-31 21:59:28,075 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2024-10-31 21:59:28,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3006 conditions, 1340 events. 651/1340 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 8456 event pairs, 152 based on Foata normal form. 8/1245 useless extension candidates. Maximal degree in co-relation 2991. Up to 354 conditions per place. [2024-10-31 21:59:28,084 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 25 selfloop transitions, 7 changer transitions 31/81 dead transitions. [2024-10-31 21:59:28,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 380 flow [2024-10-31 21:59:28,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 21:59:28,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 21:59:28,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-10-31 21:59:28,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-10-31 21:59:28,088 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 146 flow. Second operand 8 states and 192 transitions. [2024-10-31 21:59:28,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 380 flow [2024-10-31 21:59:28,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 81 transitions, 354 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-10-31 21:59:28,093 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 150 flow [2024-10-31 21:59:28,094 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=150, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2024-10-31 21:59:28,094 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-10-31 21:59:28,096 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 150 flow [2024-10-31 21:59:28,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 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) [2024-10-31 21:59:28,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:59:28,096 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:28,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 21:59:28,097 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 21:59:28,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:28,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1245391342, now seen corresponding path program 3 times [2024-10-31 21:59:28,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:28,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670260023] [2024-10-31 21:59:28,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:28,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:28,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:28,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:28,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670260023] [2024-10-31 21:59:28,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670260023] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:28,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:28,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 21:59:28,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774684182] [2024-10-31 21:59:28,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:28,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 21:59:28,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:28,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 21:59:28,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:59:28,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-10-31 21:59:28,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 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) [2024-10-31 21:59:28,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:59:28,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-10-31 21:59:28,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:59:28,628 INFO L124 PetriNetUnfolderBase]: 309/691 cut-off events. [2024-10-31 21:59:28,628 INFO L125 PetriNetUnfolderBase]: For 153/156 co-relation queries the response was YES. [2024-10-31 21:59:28,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 691 events. 309/691 cut-off events. For 153/156 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3834 event pairs, 99 based on Foata normal form. 10/651 useless extension candidates. Maximal degree in co-relation 1522. Up to 285 conditions per place. [2024-10-31 21:59:28,633 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2024-10-31 21:59:28,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 294 flow [2024-10-31 21:59:28,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:59:28,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 21:59:28,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-10-31 21:59:28,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2024-10-31 21:59:28,635 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 150 flow. Second operand 7 states and 154 transitions. [2024-10-31 21:59:28,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 294 flow [2024-10-31 21:59:28,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 62 transitions, 280 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-31 21:59:28,639 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2024-10-31 21:59:28,639 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2024-10-31 21:59:28,640 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-10-31 21:59:28,641 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2024-10-31 21:59:28,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 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) [2024-10-31 21:59:28,644 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-10-31 21:59:28,646 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-10-31 21:59:28,646 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-10-31 21:59:28,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-10-31 21:59:28,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 21:59:28,648 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-10-31 21:59:28,655 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-31 21:59:28,655 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 21:59:28,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 09:59:28 BasicIcfg [2024-10-31 21:59:28,669 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 21:59:28,670 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 21:59:28,670 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 21:59:28,670 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 21:59:28,671 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:59:24" (3/4) ... [2024-10-31 21:59:28,673 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-10-31 21:59:28,684 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-10-31 21:59:28,685 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-10-31 21:59:28,685 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-10-31 21:59:28,693 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2024-10-31 21:59:28,694 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-10-31 21:59:28,694 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-31 21:59:28,694 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-31 21:59:28,817 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c93c73-d31a-4bfc-90af-f6e453e965cd/bin/uautomizer-verify-4GaUIPS5ZU/witness.graphml [2024-10-31 21:59:28,817 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c93c73-d31a-4bfc-90af-f6e453e965cd/bin/uautomizer-verify-4GaUIPS5ZU/witness.yml [2024-10-31 21:59:28,818 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 21:59:28,818 INFO L158 Benchmark]: Toolchain (without parser) took 5821.34ms. Allocated memory was 130.0MB in the beginning and 195.0MB in the end (delta: 65.0MB). Free memory was 86.2MB in the beginning and 111.9MB in the end (delta: -25.8MB). Peak memory consumption was 42.2MB. Max. memory is 16.1GB. [2024-10-31 21:59:28,819 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 98.6MB. Free memory is still 51.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 21:59:28,819 INFO L158 Benchmark]: CACSL2BoogieTranslator took 751.40ms. Allocated memory is still 130.0MB. Free memory was 85.9MB in the beginning and 63.6MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-10-31 21:59:28,819 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.40ms. Allocated memory is still 130.0MB. Free memory was 63.6MB in the beginning and 61.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 21:59:28,820 INFO L158 Benchmark]: Boogie Preprocessor took 103.43ms. Allocated memory is still 130.0MB. Free memory was 61.5MB in the beginning and 98.5MB in the end (delta: -37.0MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2024-10-31 21:59:28,820 INFO L158 Benchmark]: RCFGBuilder took 641.17ms. Allocated memory was 130.0MB in the beginning and 161.5MB in the end (delta: 31.5MB). Free memory was 98.5MB in the beginning and 115.6MB in the end (delta: -17.1MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2024-10-31 21:59:28,821 INFO L158 Benchmark]: TraceAbstraction took 4105.71ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 115.6MB in the beginning and 116.1MB in the end (delta: -555.7kB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2024-10-31 21:59:28,824 INFO L158 Benchmark]: Witness Printer took 147.83ms. Allocated memory is still 195.0MB. Free memory was 116.1MB in the beginning and 111.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-31 21:59:28,826 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 98.6MB. Free memory is still 51.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 751.40ms. Allocated memory is still 130.0MB. Free memory was 85.9MB in the beginning and 63.6MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.40ms. Allocated memory is still 130.0MB. Free memory was 63.6MB in the beginning and 61.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 103.43ms. Allocated memory is still 130.0MB. Free memory was 61.5MB in the beginning and 98.5MB in the end (delta: -37.0MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * RCFGBuilder took 641.17ms. Allocated memory was 130.0MB in the beginning and 161.5MB in the end (delta: 31.5MB). Free memory was 98.5MB in the beginning and 115.6MB in the end (delta: -17.1MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4105.71ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 115.6MB in the beginning and 116.1MB in the end (delta: -555.7kB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. * Witness Printer took 147.83ms. Allocated memory is still 195.0MB. Free memory was 116.1MB in the beginning and 111.9MB 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: - PositiveResult [Line: 18]: 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 7 procedures, 60 locations, 4 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: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 271 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 244 mSDsluCounter, 132 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 107 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 500 IncrementalHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 25 mSDtfsCounter, 500 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=3, InterpolantAutomatonStates: 35, 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, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 599 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2024-10-31 21:59:28,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c93c73-d31a-4bfc-90af-f6e453e965cd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE