./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 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_dd87fa5f-f95d-4987-b17b-3b3f20b51369/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd87fa5f-f95d-4987-b17b-3b3f20b51369/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd87fa5f-f95d-4987-b17b-3b3f20b51369/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd87fa5f-f95d-4987-b17b-3b3f20b51369/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd87fa5f-f95d-4987-b17b-3b3f20b51369/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd87fa5f-f95d-4987-b17b-3b3f20b51369/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:39:18,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:39:18,750 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd87fa5f-f95d-4987-b17b-3b3f20b51369/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-23 21:39:18,760 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:39:18,761 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:39:18,803 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:39:18,804 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:39:18,805 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:39:18,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:39:18,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:39:18,813 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:39:18,814 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:39:18,814 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:39:18,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:39:18,817 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:39:18,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:39:18,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:39:18,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:39:18,819 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:39:18,820 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:39:18,821 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:39:18,822 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:39:18,822 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:39:18,824 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:39:18,825 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:39:18,825 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:39:18,826 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:39:18,827 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:39:18,828 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:39:18,828 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:39:18,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:39:18,830 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:39:18,830 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:39:18,831 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:39:18,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:39:18,831 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:39:18,832 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:39:18,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:39:18,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:39:18,833 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_dd87fa5f-f95d-4987-b17b-3b3f20b51369/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd87fa5f-f95d-4987-b17b-3b3f20b51369/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 [2023-11-23 21:39:19,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:39:19,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:39:19,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:39:19,218 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:39:19,219 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:39:19,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd87fa5f-f95d-4987-b17b-3b3f20b51369/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/pthread-lit/sssc12-2.i [2023-11-23 21:39:22,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:39:22,790 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:39:22,791 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd87fa5f-f95d-4987-b17b-3b3f20b51369/sv-benchmarks/c/pthread-lit/sssc12-2.i [2023-11-23 21:39:22,812 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd87fa5f-f95d-4987-b17b-3b3f20b51369/bin/uautomizer-verify-zZY32mL2XJ/data/13adb95f0/0ed401723f6144eba34f4943934c07f8/FLAGbc01b6541 [2023-11-23 21:39:22,842 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd87fa5f-f95d-4987-b17b-3b3f20b51369/bin/uautomizer-verify-zZY32mL2XJ/data/13adb95f0/0ed401723f6144eba34f4943934c07f8 [2023-11-23 21:39:22,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:39:22,855 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:39:22,861 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:39:22,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:39:22,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:39:22,871 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:39:22" (1/1) ... [2023-11-23 21:39:22,872 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29c13f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:39:22, skipping insertion in model container [2023-11-23 21:39:22,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:39:22" (1/1) ... [2023-11-23 21:39:22,955 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:39:23,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:39:23,655 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:39:23,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:39:23,838 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:39:23,838 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:39:23,846 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:39:23,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:39:23 WrapperNode [2023-11-23 21:39:23,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:39:23,848 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:39:23,849 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:39:23,849 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:39:23,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:39:23" (1/1) ... [2023-11-23 21:39:23,896 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:39:23" (1/1) ... [2023-11-23 21:39:23,935 INFO L138 Inliner]: procedures = 275, calls = 24, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 85 [2023-11-23 21:39:23,936 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:39:23,936 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:39:23,937 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:39:23,937 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:39:23,948 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:39:23" (1/1) ... [2023-11-23 21:39:23,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:39:23" (1/1) ... [2023-11-23 21:39:23,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:39:23" (1/1) ... [2023-11-23 21:39:23,966 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:39:23" (1/1) ... [2023-11-23 21:39:23,973 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:39:23" (1/1) ... [2023-11-23 21:39:23,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:39:23" (1/1) ... [2023-11-23 21:39:23,992 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:39:23" (1/1) ... [2023-11-23 21:39:23,999 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:39:23" (1/1) ... [2023-11-23 21:39:24,002 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:39:24,006 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:39:24,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:39:24,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:39:24,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:39:23" (1/1) ... [2023-11-23 21:39:24,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:39:24,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd87fa5f-f95d-4987-b17b-3b3f20b51369/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:39:24,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd87fa5f-f95d-4987-b17b-3b3f20b51369/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:39:24,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd87fa5f-f95d-4987-b17b-3b3f20b51369/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:39:24,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:39:24,109 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2023-11-23 21:39:24,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2023-11-23 21:39:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:39:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:39:24,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:39:24,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:39:24,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:39:24,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:39:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:39:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:39:24,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:39:24,115 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:39:24,285 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:39:24,288 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:39:24,498 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:39:24,722 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:39:24,723 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:39:24,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:39:24 BoogieIcfgContainer [2023-11-23 21:39:24,723 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:39:24,726 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:39:24,726 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:39:24,729 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:39:24,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:39:22" (1/3) ... [2023-11-23 21:39:24,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9bda39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:39:24, skipping insertion in model container [2023-11-23 21:39:24,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:39:23" (2/3) ... [2023-11-23 21:39:24,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9bda39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:39:24, skipping insertion in model container [2023-11-23 21:39:24,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:39:24" (3/3) ... [2023-11-23 21:39:24,738 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12-2.i [2023-11-23 21:39:24,755 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:39:24,755 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-23 21:39:24,755 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:39:24,807 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:39:24,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 29 transitions, 62 flow [2023-11-23 21:39:24,878 INFO L124 PetriNetUnfolderBase]: 3/36 cut-off events. [2023-11-23 21:39:24,878 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 21:39:24,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 3/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 68 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2023-11-23 21:39:24,885 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 29 transitions, 62 flow [2023-11-23 21:39:24,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 29 transitions, 62 flow [2023-11-23 21:39:24,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:39:24,909 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@4bee4c69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:39:24,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-23 21:39:24,914 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 21:39:24,915 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-23 21:39:24,915 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 21:39:24,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:39:24,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-23 21:39:24,916 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-23 21:39:24,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:39:24,932 INFO L85 PathProgramCache]: Analyzing trace with hash 282451, now seen corresponding path program 1 times [2023-11-23 21:39:24,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:39:24,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755481995] [2023-11-23 21:39:24,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:39:24,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:39:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:39:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:39:25,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:39:25,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755481995] [2023-11-23 21:39:25,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755481995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:39:25,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:39:25,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:39:25,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698409596] [2023-11-23 21:39:25,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:39:25,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:39:25,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:39:25,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:39:25,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:39:25,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2023-11-23 21:39:25,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2023-11-23 21:39:25,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:39:25,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2023-11-23 21:39:25,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:39:25,555 INFO L124 PetriNetUnfolderBase]: 28/94 cut-off events. [2023-11-23 21:39:25,555 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 21:39:25,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 94 events. 28/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 274 event pairs, 24 based on Foata normal form. 8/94 useless extension candidates. Maximal degree in co-relation 151. Up to 67 conditions per place. [2023-11-23 21:39:25,559 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 13 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-11-23 21:39:25,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 22 transitions, 76 flow [2023-11-23 21:39:25,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:39:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:39:25,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2023-11-23 21:39:25,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2023-11-23 21:39:25,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 45 transitions. [2023-11-23 21:39:25,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 45 transitions. [2023-11-23 21:39:25,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:39:25,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 45 transitions. [2023-11-23 21:39:25,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2023-11-23 21:39:25,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2023-11-23 21:39:25,589 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2023-11-23 21:39:25,591 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 62 flow. Second operand 3 states and 45 transitions. [2023-11-23 21:39:25,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 22 transitions, 76 flow [2023-11-23 21:39:25,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 76 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 21:39:25,600 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 50 flow [2023-11-23 21:39:25,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-11-23 21:39:25,606 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2023-11-23 21:39:25,607 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 50 flow [2023-11-23 21:39:25,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2023-11-23 21:39:25,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:39:25,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-23 21:39:25,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:39:25,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-23 21:39:25,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:39:25,610 INFO L85 PathProgramCache]: Analyzing trace with hash 282452, now seen corresponding path program 1 times [2023-11-23 21:39:25,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:39:25,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792505519] [2023-11-23 21:39:25,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:39:25,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:39:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:39:25,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:39:25,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:39:25,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792505519] [2023-11-23 21:39:25,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792505519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:39:25,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:39:25,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:39:25,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968140519] [2023-11-23 21:39:25,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:39:25,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:39:25,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:39:25,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:39:25,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:39:25,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2023-11-23 21:39:25,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2023-11-23 21:39:25,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:39:25,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2023-11-23 21:39:25,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:39:25,827 INFO L124 PetriNetUnfolderBase]: 19/69 cut-off events. [2023-11-23 21:39:25,828 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 21:39:25,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 69 events. 19/69 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 177 event pairs, 16 based on Foata normal form. 10/73 useless extension candidates. Maximal degree in co-relation 117. Up to 48 conditions per place. [2023-11-23 21:39:25,829 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 12 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2023-11-23 21:39:25,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 74 flow [2023-11-23 21:39:25,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:39:25,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:39:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2023-11-23 21:39:25,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2023-11-23 21:39:25,833 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 44 transitions. [2023-11-23 21:39:25,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 44 transitions. [2023-11-23 21:39:25,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:39:25,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 44 transitions. [2023-11-23 21:39:25,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2023-11-23 21:39:25,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2023-11-23 21:39:25,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2023-11-23 21:39:25,840 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 3 states and 44 transitions. [2023-11-23 21:39:25,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 74 flow [2023-11-23 21:39:25,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 73 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:39:25,843 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 49 flow [2023-11-23 21:39:25,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2023-11-23 21:39:25,846 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2023-11-23 21:39:25,846 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 49 flow [2023-11-23 21:39:25,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2023-11-23 21:39:25,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:39:25,847 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-23 21:39:25,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:39:25,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-23 21:39:25,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:39:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash -854908545, now seen corresponding path program 1 times [2023-11-23 21:39:25,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:39:25,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860499091] [2023-11-23 21:39:25,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:39:25,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:39:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:39:25,897 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:39:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:39:25,949 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:39:25,949 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:39:25,950 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-23 21:39:25,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-11-23 21:39:25,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-11-23 21:39:25,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (6 of 10 remaining) [2023-11-23 21:39:25,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-11-23 21:39:25,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-11-23 21:39:25,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2023-11-23 21:39:25,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-11-23 21:39:25,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 10 remaining) [2023-11-23 21:39:25,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2023-11-23 21:39:25,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:39:25,955 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-23 21:39:25,958 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:39:25,959 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-23 21:39:25,987 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:39:25,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 48 transitions, 106 flow [2023-11-23 21:39:26,023 INFO L124 PetriNetUnfolderBase]: 6/63 cut-off events. [2023-11-23 21:39:26,023 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-23 21:39:26,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 63 events. 6/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 163 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 44. Up to 3 conditions per place. [2023-11-23 21:39:26,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 48 transitions, 106 flow [2023-11-23 21:39:26,026 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 48 transitions, 106 flow [2023-11-23 21:39:26,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:39:26,029 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@4bee4c69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:39:26,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-23 21:39:26,031 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 21:39:26,032 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-23 21:39:26,032 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 21:39:26,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:39:26,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-23 21:39:26,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 10 more)] === [2023-11-23 21:39:26,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:39:26,033 INFO L85 PathProgramCache]: Analyzing trace with hash 330115, now seen corresponding path program 1 times [2023-11-23 21:39:26,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:39:26,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992788412] [2023-11-23 21:39:26,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:39:26,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:39:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:39:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:39:26,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:39:26,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992788412] [2023-11-23 21:39:26,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992788412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:39:26,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:39:26,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:39:26,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038230149] [2023-11-23 21:39:26,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:39:26,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:39:26,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:39:26,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:39:26,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:39:26,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2023-11-23 21:39:26,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 48 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2023-11-23 21:39:26,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:39:26,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2023-11-23 21:39:26,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:39:26,389 INFO L124 PetriNetUnfolderBase]: 707/1412 cut-off events. [2023-11-23 21:39:26,389 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-23 21:39:26,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2551 conditions, 1412 events. 707/1412 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7957 event pairs, 583 based on Foata normal form. 156/1392 useless extension candidates. Maximal degree in co-relation 1667. Up to 1106 conditions per place. [2023-11-23 21:39:26,409 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 23 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-11-23 21:39:26,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 134 flow [2023-11-23 21:39:26,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:39:26,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:39:26,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2023-11-23 21:39:26,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2023-11-23 21:39:26,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2023-11-23 21:39:26,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2023-11-23 21:39:26,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:39:26,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2023-11-23 21:39:26,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2023-11-23 21:39:26,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2023-11-23 21:39:26,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2023-11-23 21:39:26,422 INFO L175 Difference]: Start difference. First operand has 47 places, 48 transitions, 106 flow. Second operand 3 states and 75 transitions. [2023-11-23 21:39:26,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 134 flow [2023-11-23 21:39:26,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 21:39:26,428 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 88 flow [2023-11-23 21:39:26,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-11-23 21:39:26,432 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -4 predicate places. [2023-11-23 21:39:26,432 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 88 flow [2023-11-23 21:39:26,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2023-11-23 21:39:26,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:39:26,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-23 21:39:26,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:39:26,433 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 10 more)] === [2023-11-23 21:39:26,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:39:26,434 INFO L85 PathProgramCache]: Analyzing trace with hash 330116, now seen corresponding path program 1 times [2023-11-23 21:39:26,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:39:26,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664064859] [2023-11-23 21:39:26,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:39:26,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:39:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:39:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:39:26,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:39:26,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664064859] [2023-11-23 21:39:26,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664064859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:39:26,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:39:26,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:39:26,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737406376] [2023-11-23 21:39:26,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:39:26,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:39:26,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:39:26,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:39:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:39:26,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2023-11-23 21:39:26,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2023-11-23 21:39:26,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:39:26,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2023-11-23 21:39:26,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:39:26,860 INFO L124 PetriNetUnfolderBase]: 508/1033 cut-off events. [2023-11-23 21:39:26,861 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-23 21:39:26,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1875 conditions, 1033 events. 508/1033 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5528 event pairs, 415 based on Foata normal form. 100/1001 useless extension candidates. Maximal degree in co-relation 1867. Up to 807 conditions per place. [2023-11-23 21:39:26,872 INFO L140 encePairwiseOnDemand]: 46/48 looper letters, 22 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-11-23 21:39:26,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 132 flow [2023-11-23 21:39:26,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:39:26,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:39:26,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2023-11-23 21:39:26,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-23 21:39:26,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2023-11-23 21:39:26,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2023-11-23 21:39:26,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:39:26,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2023-11-23 21:39:26,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2023-11-23 21:39:26,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2023-11-23 21:39:26,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2023-11-23 21:39:26,885 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 88 flow. Second operand 3 states and 72 transitions. [2023-11-23 21:39:26,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 132 flow [2023-11-23 21:39:26,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 131 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:39:26,887 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 87 flow [2023-11-23 21:39:26,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-11-23 21:39:26,896 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -4 predicate places. [2023-11-23 21:39:26,897 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 87 flow [2023-11-23 21:39:26,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2023-11-23 21:39:26,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:39:26,901 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2023-11-23 21:39:26,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:39:26,901 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 10 more)] === [2023-11-23 21:39:26,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:39:26,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1186505265, now seen corresponding path program 1 times [2023-11-23 21:39:26,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:39:26,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471289598] [2023-11-23 21:39:26,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:39:26,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:39:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:39:26,942 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:39:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:39:26,975 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:39:26,975 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:39:26,975 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-23 21:39:26,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-11-23 21:39:26,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-23 21:39:26,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (9 of 13 remaining) [2023-11-23 21:39:26,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-23 21:39:26,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-23 21:39:26,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 13 remaining) [2023-11-23 21:39:26,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-11-23 21:39:26,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-11-23 21:39:26,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 13 remaining) [2023-11-23 21:39:26,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2023-11-23 21:39:26,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2023-11-23 21:39:26,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-11-23 21:39:26,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:39:26,979 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-23 21:39:26,983 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:39:26,984 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-23 21:39:27,043 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:39:27,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 67 transitions, 152 flow [2023-11-23 21:39:27,066 INFO L124 PetriNetUnfolderBase]: 9/90 cut-off events. [2023-11-23 21:39:27,067 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-23 21:39:27,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 90 events. 9/90 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 275 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2023-11-23 21:39:27,069 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 67 transitions, 152 flow [2023-11-23 21:39:27,071 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 67 transitions, 152 flow [2023-11-23 21:39:27,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:39:27,074 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@4bee4c69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:39:27,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-23 21:39:27,076 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 21:39:27,076 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-23 21:39:27,076 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 21:39:27,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:39:27,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-23 21:39:27,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 13 more)] === [2023-11-23 21:39:27,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:39:27,077 INFO L85 PathProgramCache]: Analyzing trace with hash 396646, now seen corresponding path program 1 times [2023-11-23 21:39:27,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:39:27,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661166551] [2023-11-23 21:39:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:39:27,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:39:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:39:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:39:27,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:39:27,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661166551] [2023-11-23 21:39:27,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661166551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:39:27,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:39:27,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:39:27,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088447854] [2023-11-23 21:39:27,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:39:27,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:39:27,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:39:27,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:39:27,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:39:27,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 67 [2023-11-23 21:39:27,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 67 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2023-11-23 21:39:27,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:39:27,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 67 [2023-11-23 21:39:27,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:39:29,679 INFO L124 PetriNetUnfolderBase]: 11476/18558 cut-off events. [2023-11-23 21:39:29,680 INFO L125 PetriNetUnfolderBase]: For 659/659 co-relation queries the response was YES. [2023-11-23 21:39:29,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34431 conditions, 18558 events. 11476/18558 cut-off events. For 659/659 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 131552 event pairs, 9420 based on Foata normal form. 2352/18334 useless extension candidates. Maximal degree in co-relation 4877. Up to 15479 conditions per place. [2023-11-23 21:39:29,886 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 33 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-11-23 21:39:29,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 194 flow [2023-11-23 21:39:29,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:39:29,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:39:29,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2023-11-23 21:39:29,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5223880597014925 [2023-11-23 21:39:29,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 105 transitions. [2023-11-23 21:39:29,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 105 transitions. [2023-11-23 21:39:29,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:39:29,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 105 transitions. [2023-11-23 21:39:29,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2023-11-23 21:39:29,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 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) [2023-11-23 21:39:29,893 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 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) [2023-11-23 21:39:29,893 INFO L175 Difference]: Start difference. First operand has 65 places, 67 transitions, 152 flow. Second operand 3 states and 105 transitions. [2023-11-23 21:39:29,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 194 flow [2023-11-23 21:39:29,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 54 transitions, 192 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-23 21:39:29,898 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 126 flow [2023-11-23 21:39:29,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2023-11-23 21:39:29,900 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -5 predicate places. [2023-11-23 21:39:29,900 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 126 flow [2023-11-23 21:39:29,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2023-11-23 21:39:29,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:39:29,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-23 21:39:29,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:39:29,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 13 more)] === [2023-11-23 21:39:29,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:39:29,902 INFO L85 PathProgramCache]: Analyzing trace with hash 396647, now seen corresponding path program 1 times [2023-11-23 21:39:29,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:39:29,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295835201] [2023-11-23 21:39:29,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:39:29,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:39:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:39:29,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:39:29,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:39:29,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295835201] [2023-11-23 21:39:29,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295835201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:39:29,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:39:29,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:39:29,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340656590] [2023-11-23 21:39:29,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:39:29,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:39:29,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:39:29,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:39:29,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:39:30,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2023-11-23 21:39:30,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2023-11-23 21:39:30,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:39:30,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2023-11-23 21:39:30,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:39:31,599 INFO L124 PetriNetUnfolderBase]: 8371/13665 cut-off events. [2023-11-23 21:39:31,599 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2023-11-23 21:39:31,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25341 conditions, 13665 events. 8371/13665 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 93855 event pairs, 6832 based on Foata normal form. 1000/12727 useless extension candidates. Maximal degree in co-relation 25332. Up to 11370 conditions per place. [2023-11-23 21:39:31,712 INFO L140 encePairwiseOnDemand]: 65/67 looper letters, 32 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-11-23 21:39:31,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 53 transitions, 190 flow [2023-11-23 21:39:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:39:31,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:39:31,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2023-11-23 21:39:31,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975124378109453 [2023-11-23 21:39:31,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 100 transitions. [2023-11-23 21:39:31,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 100 transitions. [2023-11-23 21:39:31,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:39:31,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 100 transitions. [2023-11-23 21:39:31,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2023-11-23 21:39:31,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 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) [2023-11-23 21:39:31,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 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) [2023-11-23 21:39:31,722 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 126 flow. Second operand 3 states and 100 transitions. [2023-11-23 21:39:31,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 53 transitions, 190 flow [2023-11-23 21:39:31,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 53 transitions, 189 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:39:31,727 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 125 flow [2023-11-23 21:39:31,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2023-11-23 21:39:31,729 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -5 predicate places. [2023-11-23 21:39:31,730 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 125 flow [2023-11-23 21:39:31,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2023-11-23 21:39:31,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:39:31,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:39:31,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:39:31,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 13 more)] === [2023-11-23 21:39:31,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:39:31,731 INFO L85 PathProgramCache]: Analyzing trace with hash 600655797, now seen corresponding path program 1 times [2023-11-23 21:39:31,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:39:31,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718608189] [2023-11-23 21:39:31,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:39:31,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:39:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:39:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:39:31,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:39:31,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718608189] [2023-11-23 21:39:31,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718608189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:39:31,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:39:31,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:39:31,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138800815] [2023-11-23 21:39:31,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:39:31,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:39:31,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:39:31,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:39:31,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:39:31,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 67 [2023-11-23 21:39:31,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2023-11-23 21:39:31,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:39:31,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 67 [2023-11-23 21:39:31,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:39:33,503 INFO L124 PetriNetUnfolderBase]: 8371/13332 cut-off events. [2023-11-23 21:39:33,503 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2023-11-23 21:39:33,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25009 conditions, 13332 events. 8371/13332 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 88082 event pairs, 6832 based on Foata normal form. 0/11727 useless extension candidates. Maximal degree in co-relation 24999. Up to 11370 conditions per place. [2023-11-23 21:39:33,611 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 32 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-11-23 21:39:33,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 50 transitions, 185 flow [2023-11-23 21:39:33,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:39:33,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:39:33,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2023-11-23 21:39:33,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47761194029850745 [2023-11-23 21:39:33,615 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 96 transitions. [2023-11-23 21:39:33,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 96 transitions. [2023-11-23 21:39:33,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:39:33,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 96 transitions. [2023-11-23 21:39:33,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:39:33,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 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) [2023-11-23 21:39:33,619 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 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) [2023-11-23 21:39:33,619 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 125 flow. Second operand 3 states and 96 transitions. [2023-11-23 21:39:33,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 50 transitions, 185 flow [2023-11-23 21:39:33,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 50 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:39:33,623 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 120 flow [2023-11-23 21:39:33,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2023-11-23 21:39:33,625 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -7 predicate places. [2023-11-23 21:39:33,625 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 120 flow [2023-11-23 21:39:33,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2023-11-23 21:39:33,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:39:33,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:39:33,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:39:33,627 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 13 more)] === [2023-11-23 21:39:33,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:39:33,627 INFO L85 PathProgramCache]: Analyzing trace with hash 600655798, now seen corresponding path program 1 times [2023-11-23 21:39:33,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:39:33,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505011705] [2023-11-23 21:39:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:39:33,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:39:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:39:33,664 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:39:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:39:33,702 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:39:33,703 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:39:33,703 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 16 remaining) [2023-11-23 21:39:33,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 16 remaining) [2023-11-23 21:39:33,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 16 remaining) [2023-11-23 21:39:33,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (12 of 16 remaining) [2023-11-23 21:39:33,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 16 remaining) [2023-11-23 21:39:33,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2023-11-23 21:39:33,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 16 remaining) [2023-11-23 21:39:33,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (8 of 16 remaining) [2023-11-23 21:39:33,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 16 remaining) [2023-11-23 21:39:33,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 16 remaining) [2023-11-23 21:39:33,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 16 remaining) [2023-11-23 21:39:33,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 16 remaining) [2023-11-23 21:39:33,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 16 remaining) [2023-11-23 21:39:33,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 16 remaining) [2023-11-23 21:39:33,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 16 remaining) [2023-11-23 21:39:33,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 16 remaining) [2023-11-23 21:39:33,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:39:33,706 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-23 21:39:33,712 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2023-11-23 21:39:33,712 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:39:33,749 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-23 21:39:33,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:39:33 BasicIcfg [2023-11-23 21:39:33,771 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:39:33,772 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:39:33,772 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:39:33,772 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:39:33,773 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:39:24" (3/4) ... [2023-11-23 21:39:33,774 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 21:39:33,798 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-23 21:39:33,848 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd87fa5f-f95d-4987-b17b-3b3f20b51369/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 21:39:33,848 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:39:33,849 INFO L158 Benchmark]: Toolchain (without parser) took 10995.44ms. Allocated memory was 148.9MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 108.0MB in the beginning and 951.4MB in the end (delta: -843.4MB). Peak memory consumption was 287.9MB. Max. memory is 16.1GB. [2023-11-23 21:39:33,849 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 115.3MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:39:33,849 INFO L158 Benchmark]: CACSL2BoogieTranslator took 986.30ms. Allocated memory is still 148.9MB. Free memory was 108.0MB in the beginning and 79.3MB in the end (delta: 28.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-23 21:39:33,849 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.62ms. Allocated memory is still 148.9MB. Free memory was 79.3MB in the beginning and 77.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:39:33,850 INFO L158 Benchmark]: Boogie Preprocessor took 68.90ms. Allocated memory is still 148.9MB. Free memory was 77.1MB in the beginning and 75.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:39:33,850 INFO L158 Benchmark]: RCFGBuilder took 717.41ms. Allocated memory is still 148.9MB. Free memory was 75.1MB in the beginning and 118.3MB in the end (delta: -43.2MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. [2023-11-23 21:39:33,851 INFO L158 Benchmark]: TraceAbstraction took 9045.40ms. Allocated memory was 148.9MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 117.3MB in the beginning and 956.6MB in the end (delta: -839.3MB). Peak memory consumption was 288.9MB. Max. memory is 16.1GB. [2023-11-23 21:39:33,851 INFO L158 Benchmark]: Witness Printer took 75.86ms. Allocated memory is still 1.3GB. Free memory was 956.6MB in the beginning and 951.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 21:39:33,854 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 115.3MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 986.30ms. Allocated memory is still 148.9MB. Free memory was 108.0MB in the beginning and 79.3MB in the end (delta: 28.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.62ms. Allocated memory is still 148.9MB. Free memory was 79.3MB in the beginning and 77.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.90ms. Allocated memory is still 148.9MB. Free memory was 77.1MB in the beginning and 75.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 717.41ms. Allocated memory is still 148.9MB. Free memory was 75.1MB in the beginning and 118.3MB in the end (delta: -43.2MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. * TraceAbstraction took 9045.40ms. Allocated memory was 148.9MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 117.3MB in the beginning and 956.6MB in the end (delta: -839.3MB). Peak memory consumption was 288.9MB. Max. memory is 16.1GB. * Witness Printer took 75.86ms. Allocated memory is still 1.3GB. Free memory was 956.6MB in the beginning and 951.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 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: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1005] 0 int *data; [L1006] 0 volatile int len; [L1007] 0 volatile int next; [L1008] 0 volatile int lock; [L1039] 0 pthread_t t; [L1040] 0 next = 0 [L1041] 0 lock = 0 [L1042] 0 len = __VERIFIER_nondet_int() [L1043] CALL 0 assume_abort_if_not(len > 0) [L994] COND FALSE 0 !(!cond) [L1043] RET 0 assume_abort_if_not(len > 0) [L1044] 0 data = malloc(sizeof(int) * len) [L1045] COND TRUE 0 1 [L1046] FCALL, FORK 0 pthread_create(&t, 0, thr, 0) VAL [data={-2:0}, len=1073741824, lock=0, next=0, t={3:0}] [L1022] 1 int c, end; [L1023] 1 c = 0 [L1024] 1 end = 0 [L1025] CALL 1 acquire() [L1011] CALL 1 assume_abort_if_not(lock == 0) [L994] COND FALSE 1 !(!cond) [L1011] RET 1 assume_abort_if_not(lock == 0) [L1012] 1 lock = 1 VAL [data={-2:0}, len=1073741824, lock=1, next=0] [L1025] RET 1 acquire() [L1026] COND TRUE 1 next + 10 <= len [L1027] 1 c = next [L1028] EXPR 1 end = next + 10 [L1028] 1 next = end = next + 10 [L1030] CALL 1 release() [L1017] CALL 1 assume_abort_if_not(lock == 1) [L994] COND FALSE 1 !(!cond) [L1017] RET 1 assume_abort_if_not(lock == 1) [L1018] 1 lock = 0 VAL [data={-2:0}, len=1073741824, lock=0, next=10] [L1030] RET 1 release() [L1031] COND TRUE 1 c < end [L1032] CALL 1 __VERIFIER_assert(0 <= c && c < len) [L997] COND FALSE 1 !(!(cond)) VAL [\old(cond)=1, cond=1, data={-2:0}, len=1073741824, lock=0, next=10] [L1032] RET 1 __VERIFIER_assert(0 <= c && c < len) [L1033] 1 data[c] = 0 - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1046]: 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: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 991]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 43 locations, 10 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: 1.1s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 59 locations, 13 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: 1.0s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 64 IncrementalHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 6 mSDtfsCounter, 64 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 75 locations, 16 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: 6.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 139 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 104 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 133 IncrementalHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 0 mSDtfsCounter, 133 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 88 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-23 21:39:33,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd87fa5f-f95d-4987-b17b-3b3f20b51369/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)