./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_3-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461b022-5a26-4394-847c-cf15528a83a7/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461b022-5a26-4394-847c-cf15528a83a7/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_b461b022-5a26-4394-847c-cf15528a83a7/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461b022-5a26-4394-847c-cf15528a83a7/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_3-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461b022-5a26-4394-847c-cf15528a83a7/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_b461b022-5a26-4394-847c-cf15528a83a7/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 11cd6df53312b6388eb67fa3ddad4ddfe9675663ccf0a1507d8b60fd9abceccc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:51:10,844 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:51:10,919 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461b022-5a26-4394-847c-cf15528a83a7/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:51:10,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:51:10,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:51:10,953 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:51:10,954 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:51:10,955 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:51:10,956 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:51:10,957 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:51:10,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:51:10,959 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:51:10,960 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:51:10,961 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:51:10,962 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:51:10,963 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:51:10,964 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:51:10,964 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:51:10,965 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:51:10,966 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:51:10,966 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:51:10,967 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:51:10,968 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:51:10,968 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:51:10,969 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:51:10,970 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:51:10,970 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:51:10,971 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:51:10,971 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:51:10,972 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:51:10,973 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:51:10,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:51:10,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:51:10,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:51:10,975 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:51:10,975 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:51:10,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:51:10,976 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:51:10,977 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:51:10,977 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:51:10,978 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:51:10,978 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:51:10,979 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_b461b022-5a26-4394-847c-cf15528a83a7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461b022-5a26-4394-847c-cf15528a83a7/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11cd6df53312b6388eb67fa3ddad4ddfe9675663ccf0a1507d8b60fd9abceccc [2023-11-26 11:51:11,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:51:11,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:51:11,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:51:11,419 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:51:11,420 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:51:11,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461b022-5a26-4394-847c-cf15528a83a7/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/ldv-races/race-2_3-container_of.i [2023-11-26 11:51:14,652 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:51:14,985 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:51:14,986 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461b022-5a26-4394-847c-cf15528a83a7/sv-benchmarks/c/ldv-races/race-2_3-container_of.i [2023-11-26 11:51:15,024 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461b022-5a26-4394-847c-cf15528a83a7/bin/uautomizer-verify-VRDe98Ueme/data/2bf7c6d03/19dbc94bdc6744a2b57c29de5bf6463b/FLAGd499ca37d [2023-11-26 11:51:15,039 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461b022-5a26-4394-847c-cf15528a83a7/bin/uautomizer-verify-VRDe98Ueme/data/2bf7c6d03/19dbc94bdc6744a2b57c29de5bf6463b [2023-11-26 11:51:15,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:51:15,043 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:51:15,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:51:15,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:51:15,051 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:51:15,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:51:15" (1/1) ... [2023-11-26 11:51:15,052 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41339f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:15, skipping insertion in model container [2023-11-26 11:51:15,053 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:51:15" (1/1) ... [2023-11-26 11:51:15,126 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:51:15,694 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_b461b022-5a26-4394-847c-cf15528a83a7/sv-benchmarks/c/ldv-races/race-2_3-container_of.i[186287,186300] [2023-11-26 11:51:15,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:51:15,790 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:51:15,858 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_b461b022-5a26-4394-847c-cf15528a83a7/sv-benchmarks/c/ldv-races/race-2_3-container_of.i[186287,186300] [2023-11-26 11:51:15,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:51:15,968 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:51:15,968 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:51:15,977 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:51:15,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:15 WrapperNode [2023-11-26 11:51:15,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:51:15,981 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:51:15,981 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:51:15,981 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:51:15,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:15" (1/1) ... [2023-11-26 11:51:16,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:15" (1/1) ... [2023-11-26 11:51:16,072 INFO L138 Inliner]: procedures = 248, calls = 63, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 144 [2023-11-26 11:51:16,072 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:51:16,073 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:51:16,073 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:51:16,074 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:51:16,087 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:15" (1/1) ... [2023-11-26 11:51:16,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:15" (1/1) ... [2023-11-26 11:51:16,108 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:15" (1/1) ... [2023-11-26 11:51:16,142 INFO L175 MemorySlicer]: Split 25 memory accesses to 5 slices as follows [2, 3, 3, 2, 15]. 60 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 1, 1, 0, 0]. The 12 writes are split as follows [0, 1, 1, 2, 8]. [2023-11-26 11:51:16,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:15" (1/1) ... [2023-11-26 11:51:16,148 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:15" (1/1) ... [2023-11-26 11:51:16,181 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:15" (1/1) ... [2023-11-26 11:51:16,184 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:15" (1/1) ... [2023-11-26 11:51:16,189 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:15" (1/1) ... [2023-11-26 11:51:16,192 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:15" (1/1) ... [2023-11-26 11:51:16,200 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:51:16,201 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:51:16,201 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:51:16,201 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:51:16,202 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:15" (1/1) ... [2023-11-26 11:51:16,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:51:16,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461b022-5a26-4394-847c-cf15528a83a7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:16,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461b022-5a26-4394-847c-cf15528a83a7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:51:16,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461b022-5a26-4394-847c-cf15528a83a7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:51:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-26 11:51:16,285 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-26 11:51:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:51:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:51:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:51:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:51:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:51:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:51:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:51:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:51:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:51:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:51:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:51:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:51:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:51:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:51:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:51:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:51:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:51:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:51:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:51:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:51:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 11:51:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 11:51:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:51:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:51:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:51:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:51:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:51:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:51:16,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:51:16,291 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 11:51:16,595 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:51:16,598 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:51:16,881 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:51:17,123 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:51:17,124 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:51:17,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:51:17 BoogieIcfgContainer [2023-11-26 11:51:17,125 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:51:17,127 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:51:17,127 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:51:17,131 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:51:17,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:51:15" (1/3) ... [2023-11-26 11:51:17,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a4b0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:51:17, skipping insertion in model container [2023-11-26 11:51:17,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:15" (2/3) ... [2023-11-26 11:51:17,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a4b0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:51:17, skipping insertion in model container [2023-11-26 11:51:17,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:51:17" (3/3) ... [2023-11-26 11:51:17,137 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_3-container_of.i [2023-11-26 11:51:17,149 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:51:17,160 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:51:17,160 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-26 11:51:17,160 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:51:17,223 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 11:51:17,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 63 transitions, 140 flow [2023-11-26 11:51:17,336 INFO L124 PetriNetUnfolderBase]: 8/76 cut-off events. [2023-11-26 11:51:17,336 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:51:17,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 76 events. 8/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 157 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 43. Up to 4 conditions per place. [2023-11-26 11:51:17,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 63 transitions, 140 flow [2023-11-26 11:51:17,348 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 56 transitions, 124 flow [2023-11-26 11:51:17,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:51:17,366 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;@7635eb73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:51:17,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-26 11:51:17,376 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:51:17,376 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2023-11-26 11:51:17,376 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:51:17,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:17,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:17,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-26 11:51:17,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:17,384 INFO L85 PathProgramCache]: Analyzing trace with hash -817256833, now seen corresponding path program 1 times [2023-11-26 11:51:17,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:17,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885646158] [2023-11-26 11:51:17,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:17,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:18,277 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 11:51:18,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:18,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885646158] [2023-11-26 11:51:18,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885646158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:18,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:18,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:51:18,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307405680] [2023-11-26 11:51:18,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:18,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:18,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:18,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:18,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:18,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 63 [2023-11-26 11:51:18,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 11:51:18,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:18,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 63 [2023-11-26 11:51:18,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:19,121 INFO L124 PetriNetUnfolderBase]: 1534/2570 cut-off events. [2023-11-26 11:51:19,122 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-26 11:51:19,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5080 conditions, 2570 events. 1534/2570 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 13468 event pairs, 1309 based on Foata normal form. 2/2425 useless extension candidates. Maximal degree in co-relation 4963. Up to 2124 conditions per place. [2023-11-26 11:51:19,153 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 52 selfloop transitions, 6 changer transitions 0/65 dead transitions. [2023-11-26 11:51:19,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 258 flow [2023-11-26 11:51:19,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:19,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:51:19,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2023-11-26 11:51:19,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2023-11-26 11:51:19,173 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 94 transitions. [2023-11-26 11:51:19,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 94 transitions. [2023-11-26 11:51:19,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:19,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 94 transitions. [2023-11-26 11:51:19,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 11:51:19,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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 11:51:19,187 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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 11:51:19,189 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 124 flow. Second operand 3 states and 94 transitions. [2023-11-26 11:51:19,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 258 flow [2023-11-26 11:51:19,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 250 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:51:19,206 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 118 flow [2023-11-26 11:51:19,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-11-26 11:51:19,215 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2023-11-26 11:51:19,216 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 118 flow [2023-11-26 11:51:19,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 11:51:19,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:19,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:19,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:51:19,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-26 11:51:19,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:19,218 INFO L85 PathProgramCache]: Analyzing trace with hash 595246558, now seen corresponding path program 1 times [2023-11-26 11:51:19,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:19,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626129321] [2023-11-26 11:51:19,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:19,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:19,633 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 11:51:19,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:19,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626129321] [2023-11-26 11:51:19,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626129321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:19,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:19,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:51:19,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600418848] [2023-11-26 11:51:19,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:19,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:51:19,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:19,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:51:19,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:51:19,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 63 [2023-11-26 11:51:19,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 11:51:19,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:19,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 63 [2023-11-26 11:51:19,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:20,381 INFO L124 PetriNetUnfolderBase]: 1782/3058 cut-off events. [2023-11-26 11:51:20,382 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2023-11-26 11:51:20,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6196 conditions, 3058 events. 1782/3058 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 16894 event pairs, 1209 based on Foata normal form. 120/3033 useless extension candidates. Maximal degree in co-relation 3606. Up to 2068 conditions per place. [2023-11-26 11:51:20,410 INFO L140 encePairwiseOnDemand]: 52/63 looper letters, 62 selfloop transitions, 8 changer transitions 4/81 dead transitions. [2023-11-26 11:51:20,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 81 transitions, 328 flow [2023-11-26 11:51:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:51:20,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:51:20,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2023-11-26 11:51:20,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-11-26 11:51:20,418 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 120 transitions. [2023-11-26 11:51:20,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 120 transitions. [2023-11-26 11:51:20,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:20,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 120 transitions. [2023-11-26 11:51:20,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 11:51:20,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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 11:51:20,431 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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 11:51:20,432 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 118 flow. Second operand 4 states and 120 transitions. [2023-11-26 11:51:20,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 81 transitions, 328 flow [2023-11-26 11:51:20,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:51:20,441 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 148 flow [2023-11-26 11:51:20,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-11-26 11:51:20,442 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -1 predicate places. [2023-11-26 11:51:20,442 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 148 flow [2023-11-26 11:51:20,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 11:51:20,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:20,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:20,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:51:20,443 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-26 11:51:20,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:20,444 INFO L85 PathProgramCache]: Analyzing trace with hash -900145956, now seen corresponding path program 1 times [2023-11-26 11:51:20,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:20,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197744287] [2023-11-26 11:51:20,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:20,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:20,700 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 11:51:20,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:20,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197744287] [2023-11-26 11:51:20,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197744287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:20,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:20,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:51:20,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081871591] [2023-11-26 11:51:20,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:20,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:20,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:20,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:20,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:20,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 63 [2023-11-26 11:51:20,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 11:51:20,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:20,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 63 [2023-11-26 11:51:20,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:21,412 INFO L124 PetriNetUnfolderBase]: 1808/3194 cut-off events. [2023-11-26 11:51:21,413 INFO L125 PetriNetUnfolderBase]: For 646/646 co-relation queries the response was YES. [2023-11-26 11:51:21,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7015 conditions, 3194 events. 1808/3194 cut-off events. For 646/646 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 18994 event pairs, 933 based on Foata normal form. 0/3012 useless extension candidates. Maximal degree in co-relation 5928. Up to 2152 conditions per place. [2023-11-26 11:51:21,443 INFO L140 encePairwiseOnDemand]: 55/63 looper letters, 52 selfloop transitions, 7 changer transitions 0/71 dead transitions. [2023-11-26 11:51:21,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 312 flow [2023-11-26 11:51:21,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:21,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:51:21,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2023-11-26 11:51:21,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5978835978835979 [2023-11-26 11:51:21,449 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2023-11-26 11:51:21,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2023-11-26 11:51:21,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:21,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2023-11-26 11:51:21,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 11:51:21,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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 11:51:21,456 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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 11:51:21,456 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 148 flow. Second operand 3 states and 113 transitions. [2023-11-26 11:51:21,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 312 flow [2023-11-26 11:51:21,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 71 transitions, 299 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-26 11:51:21,466 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 197 flow [2023-11-26 11:51:21,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2023-11-26 11:51:21,468 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 0 predicate places. [2023-11-26 11:51:21,469 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 197 flow [2023-11-26 11:51:21,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 11:51:21,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:21,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:21,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:51:21,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-26 11:51:21,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:21,473 INFO L85 PathProgramCache]: Analyzing trace with hash -2134720408, now seen corresponding path program 1 times [2023-11-26 11:51:21,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:21,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144606646] [2023-11-26 11:51:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:21,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:21,700 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 11:51:21,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:21,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144606646] [2023-11-26 11:51:21,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144606646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:21,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:21,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:51:21,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876754523] [2023-11-26 11:51:21,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:21,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:21,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:21,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:21,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:21,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 63 [2023-11-26 11:51:21,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 11:51:21,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:21,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 63 [2023-11-26 11:51:21,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:22,498 INFO L124 PetriNetUnfolderBase]: 2166/3817 cut-off events. [2023-11-26 11:51:22,498 INFO L125 PetriNetUnfolderBase]: For 2497/2497 co-relation queries the response was YES. [2023-11-26 11:51:22,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9706 conditions, 3817 events. 2166/3817 cut-off events. For 2497/2497 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 23288 event pairs, 1183 based on Foata normal form. 0/3701 useless extension candidates. Maximal degree in co-relation 1059. Up to 2585 conditions per place. [2023-11-26 11:51:22,537 INFO L140 encePairwiseOnDemand]: 55/63 looper letters, 56 selfloop transitions, 12 changer transitions 0/80 dead transitions. [2023-11-26 11:51:22,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 80 transitions, 425 flow [2023-11-26 11:51:22,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:22,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:51:22,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2023-11-26 11:51:22,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2023-11-26 11:51:22,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 112 transitions. [2023-11-26 11:51:22,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 112 transitions. [2023-11-26 11:51:22,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:22,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 112 transitions. [2023-11-26 11:51:22,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 11:51:22,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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 11:51:22,543 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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 11:51:22,544 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 197 flow. Second operand 3 states and 112 transitions. [2023-11-26 11:51:22,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 80 transitions, 425 flow [2023-11-26 11:51:22,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 80 transitions, 385 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-26 11:51:22,556 INFO L231 Difference]: Finished difference. Result has 60 places, 68 transitions, 291 flow [2023-11-26 11:51:22,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=291, PETRI_PLACES=60, PETRI_TRANSITIONS=68} [2023-11-26 11:51:22,559 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-11-26 11:51:22,560 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 68 transitions, 291 flow [2023-11-26 11:51:22,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 11:51:22,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:22,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:22,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:51:22,567 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-26 11:51:22,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:22,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2048934444, now seen corresponding path program 1 times [2023-11-26 11:51:22,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:22,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118144908] [2023-11-26 11:51:22,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:22,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:51:22,621 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:51:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:51:22,707 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:51:22,707 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:51:22,708 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-11-26 11:51:22,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-11-26 11:51:22,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-11-26 11:51:22,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-11-26 11:51:22,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-11-26 11:51:22,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-11-26 11:51:22,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-26 11:51:22,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-26 11:51:22,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:51:22,713 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-26 11:51:22,720 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 11:51:22,720 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:51:22,770 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated [2023-11-26 11:51:22,772 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-26 11:51:22,772 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-26 11:51:22,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:51:22 BasicIcfg [2023-11-26 11:51:22,793 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:51:22,793 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:51:22,793 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:51:22,794 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:51:22,794 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:51:17" (3/4) ... [2023-11-26 11:51:22,795 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-26 11:51:22,818 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated [2023-11-26 11:51:22,819 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-26 11:51:22,819 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-26 11:51:22,874 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461b022-5a26-4394-847c-cf15528a83a7/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:51:22,874 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:51:22,875 INFO L158 Benchmark]: Toolchain (without parser) took 7831.27ms. Allocated memory was 153.1MB in the beginning and 245.4MB in the end (delta: 92.3MB). Free memory was 112.7MB in the beginning and 145.9MB in the end (delta: -33.2MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. [2023-11-26 11:51:22,875 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 153.1MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:51:22,876 INFO L158 Benchmark]: CACSL2BoogieTranslator took 933.69ms. Allocated memory is still 153.1MB. Free memory was 112.7MB in the beginning and 78.2MB in the end (delta: 34.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-26 11:51:22,876 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.05ms. Allocated memory is still 153.1MB. Free memory was 78.2MB in the beginning and 75.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:51:22,877 INFO L158 Benchmark]: Boogie Preprocessor took 126.80ms. Allocated memory is still 153.1MB. Free memory was 75.5MB in the beginning and 71.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:51:22,877 INFO L158 Benchmark]: RCFGBuilder took 924.23ms. Allocated memory is still 153.1MB. Free memory was 71.3MB in the beginning and 94.4MB in the end (delta: -23.0MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. [2023-11-26 11:51:22,878 INFO L158 Benchmark]: TraceAbstraction took 5665.54ms. Allocated memory was 153.1MB in the beginning and 245.4MB in the end (delta: 92.3MB). Free memory was 94.4MB in the beginning and 151.1MB in the end (delta: -56.8MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. [2023-11-26 11:51:22,878 INFO L158 Benchmark]: Witness Printer took 80.82ms. Allocated memory is still 245.4MB. Free memory was 151.1MB in the beginning and 145.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:51:22,881 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 153.1MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 933.69ms. Allocated memory is still 153.1MB. Free memory was 112.7MB in the beginning and 78.2MB in the end (delta: 34.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.05ms. Allocated memory is still 153.1MB. Free memory was 78.2MB in the beginning and 75.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 126.80ms. Allocated memory is still 153.1MB. Free memory was 75.5MB in the beginning and 71.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 924.23ms. Allocated memory is still 153.1MB. Free memory was 71.3MB in the beginning and 94.4MB in the end (delta: -23.0MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. * TraceAbstraction took 5665.54ms. Allocated memory was 153.1MB in the beginning and 245.4MB in the end (delta: 92.3MB). Free memory was 94.4MB in the beginning and 151.1MB in the end (delta: -56.8MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. * Witness Printer took 80.82ms. Allocated memory is still 245.4MB. Free memory was 151.1MB in the beginning and 145.9MB 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3887]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L3888] 0 pthread_t t1,t2; [L3888] 0 pthread_t t1,t2; [L3888] 0 pthread_t t1,t2; [L3888] 0 pthread_t t1,t2; [L3962] CALL, EXPR 0 my_drv_init() [L3956] 0 return 0; [L3962] RET, EXPR 0 my_drv_init() [L3962] 0 int ret = my_drv_init(); [L3963] COND TRUE 0 ret==0 [L3964] 0 int probe_ret; [L3965] 0 struct my_data data; [L3966] CALL 0 my_drv_probe(&data) [L3919] 0 struct device *d = &data->dev; [L3923] 0 data->shared.a = 0 [L3924] 0 data->shared.b = 0 [L3925] 0 int res = __VERIFIER_nondet_int(); [L3926] COND FALSE 0 !(\read(res)) [L3929] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={5:24}, d={5:24}, data={5:0}, data={5:0}, res=0, t1={3:0}, t2={4:0}] [L3902] 1 struct device *dev = (struct device*)arg; [L3903] 1 struct my_data *data; [L3904] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L3904] 1 { const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - __builtin_offsetof (struct my_data, dev) );} [L3904] 1 { const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - __builtin_offsetof (struct my_data, dev) );} [L3904] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - __builtin_offsetof (struct my_data, dev) );}) [L3930] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [arg={5:24}, arg={5:24}, d={5:24}, data={5:0}, data={5:0}, data={5:0}, dev={5:24}, res=0, t1={3:0}, t2={4:0}] [L3933] 0 data->shared.a = 3 VAL [arg={5:24}, arg={5:24}, data={5:0}, dev={5:24}, t1={3:0}, t2={4:0}] [L3907] 1 data->shared.a = 1 VAL [arg={5:24}, arg={5:24}, data={5:0}, dev={5:24}, t1={3:0}, t2={4:0}] [L3936] 0 data->shared.b = 3 VAL [arg={5:24}, arg={5:24}, data={5:0}, dev={5:24}, t1={3:0}, t2={4:0}] [L3939] EXPR 0 data->shared.a [L3939] CALL 0 ldv_assert(data->shared.a==3) [L3887] COND TRUE 0 !expression [L3887] 0 reach_error() VAL [\old(expression)=0, arg={5:24}, arg={5:24}, data={5:0}, dev={5:24}, expression=0, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 3887]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 3887]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 3887]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 3887]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 3887]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 3930]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 3929]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 68 locations, 8 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: 5.4s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 92 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 416 IncrementalHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 10 mSDtfsCounter, 416 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=291occurred in iteration=4, InterpolantAutomatonStates: 13, 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, 1.3s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 93 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-26 11:51:22,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461b022-5a26-4394-847c-cf15528a83a7/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE