./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/spaghetti.wvr.c --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_32fc7453-de41-4744-9eb8-b02db6108cfe/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32fc7453-de41-4744-9eb8-b02db6108cfe/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32fc7453-de41-4744-9eb8-b02db6108cfe/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32fc7453-de41-4744-9eb8-b02db6108cfe/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/spaghetti.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32fc7453-de41-4744-9eb8-b02db6108cfe/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32fc7453-de41-4744-9eb8-b02db6108cfe/bin/uautomizer-verify-VRDe98Ueme --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 8451430e4d69b133c41912667dded61d19a596175a4065b8a2219f0d75763fd8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:59:52,098 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:59:52,180 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32fc7453-de41-4744-9eb8-b02db6108cfe/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:59:52,186 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:59:52,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:59:52,211 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:59:52,212 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:59:52,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:59:52,213 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:59:52,214 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:59:52,215 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:59:52,215 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:59:52,216 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:59:52,217 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:59:52,217 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:59:52,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:59:52,219 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:59:52,219 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:59:52,220 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:59:52,220 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:59:52,221 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:59:52,222 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:59:52,222 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:59:52,223 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:59:52,223 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:59:52,224 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:59:52,224 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:59:52,224 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:59:52,225 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:59:52,225 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:59:52,226 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:59:52,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:59:52,227 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:59:52,227 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:59:52,227 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:59:52,227 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:59:52,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:59:52,228 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:59:52,228 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:59:52,229 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:59:52,229 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:59:52,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:59:52,230 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_32fc7453-de41-4744-9eb8-b02db6108cfe/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32fc7453-de41-4744-9eb8-b02db6108cfe/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8451430e4d69b133c41912667dded61d19a596175a4065b8a2219f0d75763fd8 [2023-11-26 11:59:52,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:59:52,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:59:52,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:59:52,634 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:59:52,635 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:59:52,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32fc7453-de41-4744-9eb8-b02db6108cfe/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/spaghetti.wvr.c [2023-11-26 11:59:55,734 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:59:55,987 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:59:55,988 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32fc7453-de41-4744-9eb8-b02db6108cfe/sv-benchmarks/c/weaver/spaghetti.wvr.c [2023-11-26 11:59:55,999 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32fc7453-de41-4744-9eb8-b02db6108cfe/bin/uautomizer-verify-VRDe98Ueme/data/a840ea052/a66d0f67eabc441ea10974ba8bb79828/FLAG70b486103 [2023-11-26 11:59:56,019 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32fc7453-de41-4744-9eb8-b02db6108cfe/bin/uautomizer-verify-VRDe98Ueme/data/a840ea052/a66d0f67eabc441ea10974ba8bb79828 [2023-11-26 11:59:56,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:59:56,027 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:59:56,031 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:59:56,031 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:59:56,037 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:59:56,037 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:59:56" (1/1) ... [2023-11-26 11:59:56,039 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@288d8476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:56, skipping insertion in model container [2023-11-26 11:59:56,039 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:59:56" (1/1) ... [2023-11-26 11:59:56,074 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:59:56,308 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_32fc7453-de41-4744-9eb8-b02db6108cfe/sv-benchmarks/c/weaver/spaghetti.wvr.c[3273,3286] [2023-11-26 11:59:56,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:59:56,331 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:59:56,356 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_32fc7453-de41-4744-9eb8-b02db6108cfe/sv-benchmarks/c/weaver/spaghetti.wvr.c[3273,3286] [2023-11-26 11:59:56,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:59:56,366 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:59:56,366 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:59:56,374 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:59:56,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:56 WrapperNode [2023-11-26 11:59:56,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:59:56,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:59:56,376 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:59:56,376 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:59:56,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:56" (1/1) ... [2023-11-26 11:59:56,392 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:56" (1/1) ... [2023-11-26 11:59:56,419 INFO L138 Inliner]: procedures = 23, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2023-11-26 11:59:56,422 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:59:56,423 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:59:56,423 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:59:56,423 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:59:56,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:56" (1/1) ... [2023-11-26 11:59:56,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:56" (1/1) ... [2023-11-26 11:59:56,452 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:56" (1/1) ... [2023-11-26 11:59:56,476 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-26 11:59:56,476 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:56" (1/1) ... [2023-11-26 11:59:56,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:56" (1/1) ... [2023-11-26 11:59:56,485 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:56" (1/1) ... [2023-11-26 11:59:56,489 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:56" (1/1) ... [2023-11-26 11:59:56,491 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:56" (1/1) ... [2023-11-26 11:59:56,493 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:56" (1/1) ... [2023-11-26 11:59:56,496 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:59:56,497 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:59:56,497 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:59:56,497 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:59:56,498 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:56" (1/1) ... [2023-11-26 11:59:56,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:59:56,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32fc7453-de41-4744-9eb8-b02db6108cfe/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:56,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32fc7453-de41-4744-9eb8-b02db6108cfe/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:56,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32fc7453-de41-4744-9eb8-b02db6108cfe/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:59:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:59:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 11:59:56,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 11:59:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 11:59:56,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 11:59:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 11:59:56,569 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 11:59:56,569 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-26 11:59:56,569 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-26 11:59:56,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:59:56,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:59:56,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:59:56,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:59:56,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:59:56,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:59:56,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:59:56,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:59:56,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:59:56,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:59:56,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:59:56,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:59:56,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:59:56,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:59:56,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:59:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:59:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:59:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:59:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:59:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:59:56,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:59:56,574 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:59:56,702 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:59:56,704 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:59:56,941 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:59:57,153 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:59:57,153 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-26 11:59:57,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:59:57 BoogieIcfgContainer [2023-11-26 11:59:57,154 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:59:57,157 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:59:57,157 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:59:57,160 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:59:57,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:59:56" (1/3) ... [2023-11-26 11:59:57,162 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ab7b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:59:57, skipping insertion in model container [2023-11-26 11:59:57,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:56" (2/3) ... [2023-11-26 11:59:57,162 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ab7b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:59:57, skipping insertion in model container [2023-11-26 11:59:57,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:59:57" (3/3) ... [2023-11-26 11:59:57,164 INFO L112 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.c [2023-11-26 11:59:57,173 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:59:57,183 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:59:57,183 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:59:57,184 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:59:57,246 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-26 11:59:57,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 150 flow [2023-11-26 11:59:57,328 INFO L124 PetriNetUnfolderBase]: 8/57 cut-off events. [2023-11-26 11:59:57,328 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-26 11:59:57,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 57 events. 8/57 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-11-26 11:59:57,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 61 transitions, 150 flow [2023-11-26 11:59:57,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 56 transitions, 136 flow [2023-11-26 11:59:57,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:59:57,356 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;@41807c75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:59:57,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-26 11:59:57,381 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:59:57,381 INFO L124 PetriNetUnfolderBase]: 8/55 cut-off events. [2023-11-26 11:59:57,382 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-26 11:59:57,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:59:57,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:59:57,384 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 2 more)] === [2023-11-26 11:59:57,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:57,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1067597777, now seen corresponding path program 1 times [2023-11-26 11:59:57,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:57,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181364636] [2023-11-26 11:59:57,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:57,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:57,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:59:57,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:57,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181364636] [2023-11-26 11:59:57,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181364636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:59:57,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:59:57,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:59:57,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162200458] [2023-11-26 11:59:57,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:59:57,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:59:57,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:57,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:59:57,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:59:57,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2023-11-26 11:59:57,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 136 flow. Second operand has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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) [2023-11-26 11:59:57,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:59:57,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2023-11-26 11:59:57,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:59:58,760 INFO L124 PetriNetUnfolderBase]: 4024/6317 cut-off events. [2023-11-26 11:59:58,761 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2023-11-26 11:59:58,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11864 conditions, 6317 events. 4024/6317 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 42319 event pairs, 3057 based on Foata normal form. 1370/5918 useless extension candidates. Maximal degree in co-relation 10294. Up to 5185 conditions per place. [2023-11-26 11:59:58,887 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 31 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2023-11-26 11:59:58,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 52 transitions, 190 flow [2023-11-26 11:59:58,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:59:58,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 11:59:58,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 85 transitions. [2023-11-26 11:59:58,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6967213114754098 [2023-11-26 11:59:58,903 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 85 transitions. [2023-11-26 11:59:58,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 85 transitions. [2023-11-26 11:59:58,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:59:58,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 85 transitions. [2023-11-26 11:59:58,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 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) [2023-11-26 11:59:58,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2023-11-26 11:59:58,919 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2023-11-26 11:59:58,921 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 136 flow. Second operand 2 states and 85 transitions. [2023-11-26 11:59:58,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 52 transitions, 190 flow [2023-11-26 11:59:58,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 174 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-26 11:59:58,945 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 112 flow [2023-11-26 11:59:58,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=112, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2023-11-26 11:59:58,953 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -7 predicate places. [2023-11-26 11:59:58,953 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 112 flow [2023-11-26 11:59:58,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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) [2023-11-26 11:59:58,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:59:58,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:59:58,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:59:58,958 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 2 more)] === [2023-11-26 11:59:58,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:58,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2070224299, now seen corresponding path program 1 times [2023-11-26 11:59:58,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:58,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644221379] [2023-11-26 11:59:58,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:58,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:59:59,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:59,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644221379] [2023-11-26 11:59:59,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644221379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:59:59,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:59:59,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:59:59,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458710242] [2023-11-26 11:59:59,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:59:59,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:59:59,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:59,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:59:59,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:59:59,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 61 [2023-11-26 11:59:59,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2023-11-26 11:59:59,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:59:59,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 61 [2023-11-26 11:59:59,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:01,867 INFO L124 PetriNetUnfolderBase]: 16090/21999 cut-off events. [2023-11-26 12:00:01,868 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2023-11-26 12:00:01,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43702 conditions, 21999 events. 16090/21999 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 1400. Compared 138919 event pairs, 5040 based on Foata normal form. 1/17518 useless extension candidates. Maximal degree in co-relation 43699. Up to 8634 conditions per place. [2023-11-26 12:00:02,132 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 82 selfloop transitions, 10 changer transitions 1/108 dead transitions. [2023-11-26 12:00:02,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 108 transitions, 418 flow [2023-11-26 12:00:02,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:02,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:00:02,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2023-11-26 12:00:02,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6967213114754098 [2023-11-26 12:00:02,136 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 170 transitions. [2023-11-26 12:00:02,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 170 transitions. [2023-11-26 12:00:02,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:02,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 170 transitions. [2023-11-26 12:00:02,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.5) internal successors, (170), 4 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) [2023-11-26 12:00:02,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-26 12:00:02,140 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-26 12:00:02,140 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 112 flow. Second operand 4 states and 170 transitions. [2023-11-26 12:00:02,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 108 transitions, 418 flow [2023-11-26 12:00:02,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 108 transitions, 418 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:00:02,144 INFO L231 Difference]: Finished difference. Result has 60 places, 62 transitions, 190 flow [2023-11-26 12:00:02,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=60, PETRI_TRANSITIONS=62} [2023-11-26 12:00:02,146 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2023-11-26 12:00:02,146 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 62 transitions, 190 flow [2023-11-26 12:00:02,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2023-11-26 12:00:02,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:02,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:02,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:00:02,147 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 2 more)] === [2023-11-26 12:00:02,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:02,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1685209187, now seen corresponding path program 2 times [2023-11-26 12:00:02,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:02,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797154504] [2023-11-26 12:00:02,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:02,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:02,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:02,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797154504] [2023-11-26 12:00:02,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797154504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:02,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:02,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:00:02,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921503275] [2023-11-26 12:00:02,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:02,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:02,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:02,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:02,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:02,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 61 [2023-11-26 12:00:02,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 62 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2023-11-26 12:00:02,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:02,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 61 [2023-11-26 12:00:02,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:05,131 INFO L124 PetriNetUnfolderBase]: 19480/27096 cut-off events. [2023-11-26 12:00:05,131 INFO L125 PetriNetUnfolderBase]: For 9353/9353 co-relation queries the response was YES. [2023-11-26 12:00:05,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63044 conditions, 27096 events. 19480/27096 cut-off events. For 9353/9353 co-relation queries the response was YES. Maximal size of possible extension queue 1693. Compared 177418 event pairs, 6452 based on Foata normal form. 1/21956 useless extension candidates. Maximal degree in co-relation 63038. Up to 11826 conditions per place. [2023-11-26 12:00:05,257 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 0 selfloop transitions, 0 changer transitions 124/124 dead transitions. [2023-11-26 12:00:05,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 124 transitions, 608 flow [2023-11-26 12:00:05,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:05,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:00:05,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2023-11-26 12:00:05,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6926229508196722 [2023-11-26 12:00:05,263 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 169 transitions. [2023-11-26 12:00:05,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 169 transitions. [2023-11-26 12:00:05,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:05,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 169 transitions. [2023-11-26 12:00:05,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2023-11-26 12:00:05,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-26 12:00:05,270 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-26 12:00:05,270 INFO L175 Difference]: Start difference. First operand has 60 places, 62 transitions, 190 flow. Second operand 4 states and 169 transitions. [2023-11-26 12:00:05,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 124 transitions, 608 flow [2023-11-26 12:00:05,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 124 transitions, 608 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:00:05,283 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2023-11-26 12:00:05,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2023-11-26 12:00:05,285 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2023-11-26 12:00:05,285 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2023-11-26 12:00:05,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2023-11-26 12:00:05,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-26 12:00:05,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-11-26 12:00:05,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-26 12:00:05,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-26 12:00:05,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-26 12:00:05,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:00:05,292 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-11-26 12:00:05,299 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 12:00:05,299 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 12:00:05,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:00:05 BasicIcfg [2023-11-26 12:00:05,316 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 12:00:05,316 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:00:05,317 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:00:05,317 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:00:05,318 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:59:57" (3/4) ... [2023-11-26 12:00:05,320 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 12:00:05,324 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-26 12:00:05,324 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-26 12:00:05,324 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-26 12:00:05,325 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2023-11-26 12:00:05,334 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 59 nodes and edges [2023-11-26 12:00:05,335 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-26 12:00:05,335 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-26 12:00:05,335 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 12:00:05,447 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32fc7453-de41-4744-9eb8-b02db6108cfe/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 12:00:05,447 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32fc7453-de41-4744-9eb8-b02db6108cfe/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 12:00:05,447 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:00:05,448 INFO L158 Benchmark]: Toolchain (without parser) took 9421.62ms. Allocated memory was 155.2MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 115.8MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 364.0MB. Max. memory is 16.1GB. [2023-11-26 12:00:05,449 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 115.3MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:00:05,449 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.13ms. Allocated memory is still 155.2MB. Free memory was 115.2MB in the beginning and 103.3MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 12:00:05,450 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.62ms. Allocated memory is still 155.2MB. Free memory was 103.3MB in the beginning and 102.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:00:05,450 INFO L158 Benchmark]: Boogie Preprocessor took 73.61ms. Allocated memory is still 155.2MB. Free memory was 102.0MB in the beginning and 99.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:00:05,450 INFO L158 Benchmark]: RCFGBuilder took 656.98ms. Allocated memory is still 155.2MB. Free memory was 99.3MB in the beginning and 71.8MB in the end (delta: 27.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-26 12:00:05,451 INFO L158 Benchmark]: TraceAbstraction took 8159.05ms. Allocated memory was 155.2MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 71.2MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 368.2MB. Max. memory is 16.1GB. [2023-11-26 12:00:05,451 INFO L158 Benchmark]: Witness Printer took 131.07ms. Allocated memory is still 1.5GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 12:00:05,453 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 115.3MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 344.13ms. Allocated memory is still 155.2MB. Free memory was 115.2MB in the beginning and 103.3MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.62ms. Allocated memory is still 155.2MB. Free memory was 103.3MB in the beginning and 102.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.61ms. Allocated memory is still 155.2MB. Free memory was 102.0MB in the beginning and 99.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 656.98ms. Allocated memory is still 155.2MB. Free memory was 99.3MB in the beginning and 71.8MB in the end (delta: 27.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 8159.05ms. Allocated memory was 155.2MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 71.2MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 368.2MB. Max. memory is 16.1GB. * Witness Printer took 131.07ms. Allocated memory is still 1.5GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 127]: 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 9 procedures, 92 locations, 5 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: 8.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 104 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 76 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 397 IncrementalHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 8 mSDtfsCounter, 397 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=2, InterpolantAutomatonStates: 10, 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, 0.8s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 257 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 12:00:05,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32fc7453-de41-4744-9eb8-b02db6108cfe/bin/uautomizer-verify-VRDe98Ueme/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