./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe037.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad76c1d-7690-4627-adb5-b946b7a7f073/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad76c1d-7690-4627-adb5-b946b7a7f073/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad76c1d-7690-4627-adb5-b946b7a7f073/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad76c1d-7690-4627-adb5-b946b7a7f073/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe037.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad76c1d-7690-4627-adb5-b946b7a7f073/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad76c1d-7690-4627-adb5-b946b7a7f073/bin/uautomizer-verify-NlZe1sFDwI --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 8e4a27807726d35f891e97d8bb2a7e6664171035f3f5de29d992fc7dfa583447 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:55:39,116 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:55:39,271 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad76c1d-7690-4627-adb5-b946b7a7f073/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:55:39,283 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:55:39,284 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:55:39,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:55:39,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:55:39,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:55:39,328 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:55:39,333 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:55:39,334 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:55:39,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:55:39,336 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:55:39,338 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:55:39,339 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:55:39,339 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:55:39,340 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:55:39,340 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:55:39,341 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:55:39,341 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:55:39,342 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:55:39,343 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:55:39,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:55:39,344 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:55:39,344 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:55:39,345 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:55:39,345 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:55:39,346 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:55:39,347 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:55:39,347 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:55:39,348 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:55:39,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:55:39,349 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:55:39,350 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:55:39,350 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:55:39,350 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:55:39,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:55:39,351 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:55:39,351 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:55:39,351 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:55:39,352 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:55:39,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:55:39,352 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_aad76c1d-7690-4627-adb5-b946b7a7f073/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad76c1d-7690-4627-adb5-b946b7a7f073/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e4a27807726d35f891e97d8bb2a7e6664171035f3f5de29d992fc7dfa583447 [2023-11-24 21:55:39,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:55:39,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:55:39,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:55:39,702 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:55:39,705 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:55:39,706 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad76c1d-7690-4627-adb5-b946b7a7f073/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/safe037.i [2023-11-24 21:55:42,814 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:55:43,141 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:55:43,147 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad76c1d-7690-4627-adb5-b946b7a7f073/sv-benchmarks/c/pthread-wmm/safe037.i [2023-11-24 21:55:43,164 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad76c1d-7690-4627-adb5-b946b7a7f073/bin/uautomizer-verify-NlZe1sFDwI/data/27a38c2f6/6266a294bc2a4df9b1c93638483bcc72/FLAG56e64dcbe [2023-11-24 21:55:43,180 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad76c1d-7690-4627-adb5-b946b7a7f073/bin/uautomizer-verify-NlZe1sFDwI/data/27a38c2f6/6266a294bc2a4df9b1c93638483bcc72 [2023-11-24 21:55:43,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:55:43,184 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:55:43,185 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:55:43,186 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:55:43,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:55:43,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:55:43" (1/1) ... [2023-11-24 21:55:43,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78e339de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:43, skipping insertion in model container [2023-11-24 21:55:43,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:55:43" (1/1) ... [2023-11-24 21:55:43,243 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:55:43,505 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_aad76c1d-7690-4627-adb5-b946b7a7f073/sv-benchmarks/c/pthread-wmm/safe037.i[941,954] [2023-11-24 21:55:43,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:55:43,784 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:55:43,806 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_aad76c1d-7690-4627-adb5-b946b7a7f073/sv-benchmarks/c/pthread-wmm/safe037.i[941,954] [2023-11-24 21:55:43,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:55:43,901 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:55:43,902 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:55:43,910 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:55:43,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:43 WrapperNode [2023-11-24 21:55:43,912 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:55:43,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:55:43,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:55:43,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:55:43,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:43" (1/1) ... [2023-11-24 21:55:43,957 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:43" (1/1) ... [2023-11-24 21:55:43,981 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-11-24 21:55:43,981 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:55:43,982 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:55:43,982 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:55:43,982 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:55:43,993 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:43" (1/1) ... [2023-11-24 21:55:43,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:43" (1/1) ... [2023-11-24 21:55:43,999 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:43" (1/1) ... [2023-11-24 21:55:44,014 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-24 21:55:44,014 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:43" (1/1) ... [2023-11-24 21:55:44,014 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:43" (1/1) ... [2023-11-24 21:55:44,022 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:43" (1/1) ... [2023-11-24 21:55:44,025 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:43" (1/1) ... [2023-11-24 21:55:44,027 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:43" (1/1) ... [2023-11-24 21:55:44,029 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:43" (1/1) ... [2023-11-24 21:55:44,032 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:55:44,033 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:55:44,033 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:55:44,033 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:55:44,034 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:43" (1/1) ... [2023-11-24 21:55:44,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:55:44,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad76c1d-7690-4627-adb5-b946b7a7f073/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:55:44,093 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad76c1d-7690-4627-adb5-b946b7a7f073/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:55:44,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad76c1d-7690-4627-adb5-b946b7a7f073/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:55:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:55:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:55:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:55:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:55:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:55:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:55:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:55:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:55:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:55:44,147 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:55:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:55:44,147 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:55:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 21:55:44,148 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 21:55:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:55:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:55:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:55:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:55:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:55:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:55:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:55:44,153 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:55:44,387 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:55:44,389 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:55:44,710 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:55:44,830 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:55:44,830 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:55:44,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:55:44 BoogieIcfgContainer [2023-11-24 21:55:44,831 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:55:44,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:55:44,835 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:55:44,840 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:55:44,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:55:43" (1/3) ... [2023-11-24 21:55:44,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7451cbe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:55:44, skipping insertion in model container [2023-11-24 21:55:44,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:43" (2/3) ... [2023-11-24 21:55:44,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7451cbe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:55:44, skipping insertion in model container [2023-11-24 21:55:44,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:55:44" (3/3) ... [2023-11-24 21:55:44,846 INFO L112 eAbstractionObserver]: Analyzing ICFG safe037.i [2023-11-24 21:55:44,857 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 21:55:44,869 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:55:44,869 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:55:44,869 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:55:44,947 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:55:45,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 41 transitions, 94 flow [2023-11-24 21:55:45,067 INFO L124 PetriNetUnfolderBase]: 1/38 cut-off events. [2023-11-24 21:55:45,067 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:55:45,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 1/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-11-24 21:55:45,075 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 41 transitions, 94 flow [2023-11-24 21:55:45,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 35 transitions, 79 flow [2023-11-24 21:55:45,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:55:45,128 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e4934dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:55:45,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-24 21:55:45,155 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:55:45,158 INFO L124 PetriNetUnfolderBase]: 0/34 cut-off events. [2023-11-24 21:55:45,158 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:55:45,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:45,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:55:45,160 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-24 21:55:45,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:45,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1578225091, now seen corresponding path program 1 times [2023-11-24 21:55:45,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:55:45,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621593891] [2023-11-24 21:55:45,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:45,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:55:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:46,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:55:46,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:55:46,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621593891] [2023-11-24 21:55:46,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621593891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:46,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:46,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:55:46,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855392370] [2023-11-24 21:55:46,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:46,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:55:46,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:55:46,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:55:46,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:55:46,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 41 [2023-11-24 21:55:46,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2023-11-24 21:55:46,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:46,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 41 [2023-11-24 21:55:46,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:46,414 INFO L124 PetriNetUnfolderBase]: 291/594 cut-off events. [2023-11-24 21:55:46,414 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-24 21:55:46,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 594 events. 291/594 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3155 event pairs, 58 based on Foata normal form. 27/610 useless extension candidates. Maximal degree in co-relation 1089. Up to 236 conditions per place. [2023-11-24 21:55:46,473 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 25 selfloop transitions, 5 changer transitions 1/50 dead transitions. [2023-11-24 21:55:46,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 50 transitions, 177 flow [2023-11-24 21:55:46,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:55:46,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:55:46,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2023-11-24 21:55:46,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7621951219512195 [2023-11-24 21:55:46,490 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 125 transitions. [2023-11-24 21:55:46,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 125 transitions. [2023-11-24 21:55:46,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:46,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 125 transitions. [2023-11-24 21:55:46,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2023-11-24 21:55:46,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 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) [2023-11-24 21:55:46,506 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 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) [2023-11-24 21:55:46,509 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 79 flow. Second operand 4 states and 125 transitions. [2023-11-24 21:55:46,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 50 transitions, 177 flow [2023-11-24 21:55:46,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 50 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:55:46,523 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 110 flow [2023-11-24 21:55:46,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-11-24 21:55:46,531 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-11-24 21:55:46,532 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 110 flow [2023-11-24 21:55:46,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2023-11-24 21:55:46,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:46,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:55:46,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:55:46,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-24 21:55:46,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:46,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1135107262, now seen corresponding path program 1 times [2023-11-24 21:55:46,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:55:46,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189304040] [2023-11-24 21:55:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:46,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:55:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:46,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:55:46,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:55:46,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189304040] [2023-11-24 21:55:46,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189304040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:46,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:46,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:55:46,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694658703] [2023-11-24 21:55:46,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:46,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:55:46,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:55:46,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:55:46,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:55:46,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 41 [2023-11-24 21:55:46,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 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) [2023-11-24 21:55:46,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:46,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 41 [2023-11-24 21:55:46,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:47,197 INFO L124 PetriNetUnfolderBase]: 249/509 cut-off events. [2023-11-24 21:55:47,197 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2023-11-24 21:55:47,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 509 events. 249/509 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2454 event pairs, 15 based on Foata normal form. 26/526 useless extension candidates. Maximal degree in co-relation 1175. Up to 188 conditions per place. [2023-11-24 21:55:47,207 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 31 selfloop transitions, 8 changer transitions 1/59 dead transitions. [2023-11-24 21:55:47,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 59 transitions, 253 flow [2023-11-24 21:55:47,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:55:47,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:55:47,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2023-11-24 21:55:47,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7658536585365854 [2023-11-24 21:55:47,215 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 157 transitions. [2023-11-24 21:55:47,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 157 transitions. [2023-11-24 21:55:47,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:47,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 157 transitions. [2023-11-24 21:55:47,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2023-11-24 21:55:47,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 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) [2023-11-24 21:55:47,227 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 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) [2023-11-24 21:55:47,227 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 110 flow. Second operand 5 states and 157 transitions. [2023-11-24 21:55:47,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 59 transitions, 253 flow [2023-11-24 21:55:47,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 243 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-24 21:55:47,233 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 150 flow [2023-11-24 21:55:47,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2023-11-24 21:55:47,241 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 6 predicate places. [2023-11-24 21:55:47,241 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 150 flow [2023-11-24 21:55:47,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 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) [2023-11-24 21:55:47,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:47,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:55:47,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:55:47,243 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-24 21:55:47,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:47,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1343919389, now seen corresponding path program 1 times [2023-11-24 21:55:47,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:55:47,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550152121] [2023-11-24 21:55:47,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:47,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:55:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:47,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:55:47,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:55:47,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550152121] [2023-11-24 21:55:47,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550152121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:47,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:47,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:55:47,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345122380] [2023-11-24 21:55:47,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:47,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:55:47,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:55:47,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:55:47,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:55:47,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 41 [2023-11-24 21:55:47,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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) [2023-11-24 21:55:47,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:47,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 41 [2023-11-24 21:55:47,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:47,832 INFO L124 PetriNetUnfolderBase]: 174/344 cut-off events. [2023-11-24 21:55:47,832 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2023-11-24 21:55:47,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 344 events. 174/344 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1248 event pairs, 6 based on Foata normal form. 20/355 useless extension candidates. Maximal degree in co-relation 929. Up to 108 conditions per place. [2023-11-24 21:55:47,838 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 29 selfloop transitions, 11 changer transitions 1/60 dead transitions. [2023-11-24 21:55:47,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 280 flow [2023-11-24 21:55:47,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:55:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:55:47,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2023-11-24 21:55:47,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7357723577235772 [2023-11-24 21:55:47,844 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 181 transitions. [2023-11-24 21:55:47,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 181 transitions. [2023-11-24 21:55:47,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:47,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 181 transitions. [2023-11-24 21:55:47,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 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) [2023-11-24 21:55:47,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 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) [2023-11-24 21:55:47,851 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 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) [2023-11-24 21:55:47,851 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 150 flow. Second operand 6 states and 181 transitions. [2023-11-24 21:55:47,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 280 flow [2023-11-24 21:55:47,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 60 transitions, 255 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-24 21:55:47,861 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 164 flow [2023-11-24 21:55:47,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2023-11-24 21:55:47,864 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2023-11-24 21:55:47,864 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 164 flow [2023-11-24 21:55:47,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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) [2023-11-24 21:55:47,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:47,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:55:47,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:55:47,866 INFO L420 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)] === [2023-11-24 21:55:47,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:47,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1924291872, now seen corresponding path program 1 times [2023-11-24 21:55:47,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:55:47,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64672860] [2023-11-24 21:55:47,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:47,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:55:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:48,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:55:48,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:55:48,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64672860] [2023-11-24 21:55:48,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64672860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:48,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:48,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:55:48,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332340986] [2023-11-24 21:55:48,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:48,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:55:48,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:55:48,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:55:48,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:55:48,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 41 [2023-11-24 21:55:48,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 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) [2023-11-24 21:55:48,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:48,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 41 [2023-11-24 21:55:48,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:48,451 INFO L124 PetriNetUnfolderBase]: 240/530 cut-off events. [2023-11-24 21:55:48,451 INFO L125 PetriNetUnfolderBase]: For 279/283 co-relation queries the response was YES. [2023-11-24 21:55:48,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 530 events. 240/530 cut-off events. For 279/283 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2604 event pairs, 86 based on Foata normal form. 8/479 useless extension candidates. Maximal degree in co-relation 1234. Up to 195 conditions per place. [2023-11-24 21:55:48,457 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 20 selfloop transitions, 1 changer transitions 16/62 dead transitions. [2023-11-24 21:55:48,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 292 flow [2023-11-24 21:55:48,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:55:48,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:55:48,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2023-11-24 21:55:48,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6910569105691057 [2023-11-24 21:55:48,460 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 170 transitions. [2023-11-24 21:55:48,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 170 transitions. [2023-11-24 21:55:48,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:48,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 170 transitions. [2023-11-24 21:55:48,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2023-11-24 21:55:48,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 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) [2023-11-24 21:55:48,464 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 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) [2023-11-24 21:55:48,464 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 164 flow. Second operand 6 states and 170 transitions. [2023-11-24 21:55:48,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 292 flow [2023-11-24 21:55:48,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 62 transitions, 228 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-11-24 21:55:48,471 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 119 flow [2023-11-24 21:55:48,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=119, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2023-11-24 21:55:48,473 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2023-11-24 21:55:48,474 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 119 flow [2023-11-24 21:55:48,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 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) [2023-11-24 21:55:48,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:48,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:55:48,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:55:48,476 INFO L420 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)] === [2023-11-24 21:55:48,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:48,477 INFO L85 PathProgramCache]: Analyzing trace with hash 553569928, now seen corresponding path program 2 times [2023-11-24 21:55:48,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:55:48,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557621080] [2023-11-24 21:55:48,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:48,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:55:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:55:48,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:55:48,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557621080] [2023-11-24 21:55:48,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557621080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:48,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:48,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:55:48,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672788968] [2023-11-24 21:55:48,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:48,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:55:48,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:55:48,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:55:48,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:55:48,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 41 [2023-11-24 21:55:48,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 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) [2023-11-24 21:55:48,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:48,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 41 [2023-11-24 21:55:48,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:49,068 INFO L124 PetriNetUnfolderBase]: 243/580 cut-off events. [2023-11-24 21:55:49,068 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-24 21:55:49,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 580 events. 243/580 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3030 event pairs, 82 based on Foata normal form. 8/529 useless extension candidates. Maximal degree in co-relation 1121. Up to 213 conditions per place. [2023-11-24 21:55:49,074 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 17 selfloop transitions, 1 changer transitions 19/62 dead transitions. [2023-11-24 21:55:49,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 62 transitions, 243 flow [2023-11-24 21:55:49,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:55:49,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:55:49,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2023-11-24 21:55:49,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6910569105691057 [2023-11-24 21:55:49,076 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 170 transitions. [2023-11-24 21:55:49,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 170 transitions. [2023-11-24 21:55:49,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:49,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 170 transitions. [2023-11-24 21:55:49,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2023-11-24 21:55:49,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 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) [2023-11-24 21:55:49,081 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 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) [2023-11-24 21:55:49,081 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 119 flow. Second operand 6 states and 170 transitions. [2023-11-24 21:55:49,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 62 transitions, 243 flow [2023-11-24 21:55:49,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 232 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-24 21:55:49,086 INFO L231 Difference]: Finished difference. Result has 57 places, 41 transitions, 123 flow [2023-11-24 21:55:49,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=123, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2023-11-24 21:55:49,090 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2023-11-24 21:55:49,091 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 123 flow [2023-11-24 21:55:49,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 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) [2023-11-24 21:55:49,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:49,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:55:49,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:55:49,092 INFO L420 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)] === [2023-11-24 21:55:49,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:49,093 INFO L85 PathProgramCache]: Analyzing trace with hash 2076292094, now seen corresponding path program 3 times [2023-11-24 21:55:49,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:55:49,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831188098] [2023-11-24 21:55:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:49,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:55:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:55:49,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:55:49,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831188098] [2023-11-24 21:55:49,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831188098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:49,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:49,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:55:49,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337603084] [2023-11-24 21:55:49,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:49,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:55:49,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:55:49,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:55:49,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:55:49,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 41 [2023-11-24 21:55:49,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 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) [2023-11-24 21:55:49,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:49,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 41 [2023-11-24 21:55:49,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:49,512 INFO L124 PetriNetUnfolderBase]: 177/450 cut-off events. [2023-11-24 21:55:49,512 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-24 21:55:49,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 450 events. 177/450 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2515 event pairs, 52 based on Foata normal form. 8/411 useless extension candidates. Maximal degree in co-relation 873. Up to 122 conditions per place. [2023-11-24 21:55:49,516 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2023-11-24 21:55:49,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 203 flow [2023-11-24 21:55:49,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:55:49,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:55:49,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2023-11-24 21:55:49,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2023-11-24 21:55:49,518 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 162 transitions. [2023-11-24 21:55:49,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 162 transitions. [2023-11-24 21:55:49,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:49,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 162 transitions. [2023-11-24 21:55:49,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 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) [2023-11-24 21:55:49,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 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) [2023-11-24 21:55:49,520 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 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) [2023-11-24 21:55:49,521 INFO L175 Difference]: Start difference. First operand has 57 places, 41 transitions, 123 flow. Second operand 6 states and 162 transitions. [2023-11-24 21:55:49,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 203 flow [2023-11-24 21:55:49,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 198 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-24 21:55:49,523 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2023-11-24 21:55:49,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=6, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2023-11-24 21:55:49,527 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2023-11-24 21:55:49,527 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2023-11-24 21:55:49,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 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) [2023-11-24 21:55:49,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-24 21:55:49,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-24 21:55:49,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-24 21:55:49,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-24 21:55:49,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:55:49,533 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2023-11-24 21:55:49,539 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:55:49,539 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:55:49,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:55:49 BasicIcfg [2023-11-24 21:55:49,552 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:55:49,553 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:55:49,553 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:55:49,553 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:55:49,554 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:55:44" (3/4) ... [2023-11-24 21:55:49,556 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:55:49,560 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-24 21:55:49,560 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-24 21:55:49,560 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-24 21:55:49,568 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2023-11-24 21:55:49,568 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-24 21:55:49,569 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-24 21:55:49,569 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 21:55:49,682 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad76c1d-7690-4627-adb5-b946b7a7f073/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:55:49,683 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad76c1d-7690-4627-adb5-b946b7a7f073/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:55:49,683 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:55:49,686 INFO L158 Benchmark]: Toolchain (without parser) took 6499.55ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 138.9MB in the beginning and 74.1MB in the end (delta: 64.8MB). Peak memory consumption was 100.3MB. Max. memory is 16.1GB. [2023-11-24 21:55:49,686 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 107.0MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:55:49,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 726.59ms. Allocated memory is still 178.3MB. Free memory was 138.9MB in the beginning and 137.0MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-24 21:55:49,687 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.29ms. Allocated memory is still 178.3MB. Free memory was 137.0MB in the beginning and 134.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:55:49,687 INFO L158 Benchmark]: Boogie Preprocessor took 50.57ms. Allocated memory is still 178.3MB. Free memory was 134.9MB in the beginning and 132.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:55:49,687 INFO L158 Benchmark]: RCFGBuilder took 798.24ms. Allocated memory is still 178.3MB. Free memory was 131.9MB in the beginning and 111.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:55:49,688 INFO L158 Benchmark]: TraceAbstraction took 4718.03ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 110.1MB in the beginning and 78.3MB in the end (delta: 31.8MB). Peak memory consumption was 70.2MB. Max. memory is 16.1GB. [2023-11-24 21:55:49,688 INFO L158 Benchmark]: Witness Printer took 129.70ms. Allocated memory is still 213.9MB. Free memory was 78.3MB in the beginning and 74.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:55:49,691 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 107.0MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 726.59ms. Allocated memory is still 178.3MB. Free memory was 138.9MB in the beginning and 137.0MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.29ms. Allocated memory is still 178.3MB. Free memory was 137.0MB in the beginning and 134.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.57ms. Allocated memory is still 178.3MB. Free memory was 134.9MB in the beginning and 132.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 798.24ms. Allocated memory is still 178.3MB. Free memory was 131.9MB in the beginning and 111.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4718.03ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 110.1MB in the beginning and 78.3MB in the end (delta: 31.8MB). Peak memory consumption was 70.2MB. Max. memory is 16.1GB. * Witness Printer took 129.70ms. Allocated memory is still 213.9MB. Free memory was 78.3MB in the beginning and 74.1MB 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, 68 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: 4.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 211 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 187 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 502 IncrementalHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 16 mSDtfsCounter, 502 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=3, InterpolantAutomatonStates: 33, 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, 1.9s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 434 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! [2023-11-24 21:55:49,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad76c1d-7690-4627-adb5-b946b7a7f073/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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