./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2c80e2-9184-447f-b7ce-e8590a2c7b29/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2c80e2-9184-447f-b7ce-e8590a2c7b29/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2c80e2-9184-447f-b7ce-e8590a2c7b29/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2c80e2-9184-447f-b7ce-e8590a2c7b29/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2c80e2-9184-447f-b7ce-e8590a2c7b29/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2c80e2-9184-447f-b7ce-e8590a2c7b29/bin/uautomizer-verify-4GaUIPS5ZU --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 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:17:07,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:17:07,614 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2c80e2-9184-447f-b7ce-e8590a2c7b29/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:17:07,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:17:07,625 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:17:07,665 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:17:07,667 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:17:07,668 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:17:07,669 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:17:07,671 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:17:07,671 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:17:07,672 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:17:07,673 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:17:07,673 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:17:07,673 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:17:07,674 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:17:07,674 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:17:07,675 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:17:07,675 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:17:07,675 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:17:07,676 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:17:07,680 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:17:07,681 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:17:07,681 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:17:07,684 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:17:07,685 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:17:07,685 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:17:07,685 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:17:07,686 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:17:07,686 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:17:07,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:17:07,687 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:17:07,687 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:17:07,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:17:07,687 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:17:07,688 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:17:07,688 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:17:07,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:17:07,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:17:07,689 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:17:07,689 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:17:07,691 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:17:07,691 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_9e2c80e2-9184-447f-b7ce-e8590a2c7b29/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2c80e2-9184-447f-b7ce-e8590a2c7b29/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 [2024-10-31 22:17:07,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:17:08,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:17:08,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:17:08,033 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:17:08,034 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:17:08,035 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2c80e2-9184-447f-b7ce-e8590a2c7b29/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i Unable to find full path for "g++" [2024-10-31 22:17:10,381 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:17:10,617 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:17:10,617 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2c80e2-9184-447f-b7ce-e8590a2c7b29/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2024-10-31 22:17:10,636 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2c80e2-9184-447f-b7ce-e8590a2c7b29/bin/uautomizer-verify-4GaUIPS5ZU/data/9919f5ebe/d25c745351d74d039507feeaee4e2bda/FLAGb9ea01b15 [2024-10-31 22:17:10,961 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2c80e2-9184-447f-b7ce-e8590a2c7b29/bin/uautomizer-verify-4GaUIPS5ZU/data/9919f5ebe/d25c745351d74d039507feeaee4e2bda [2024-10-31 22:17:10,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:17:10,965 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:17:10,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:10,967 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:17:10,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:17:10,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:10" (1/1) ... [2024-10-31 22:17:10,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217bb3aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:10, skipping insertion in model container [2024-10-31 22:17:10,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:10" (1/1) ... [2024-10-31 22:17:11,035 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:17:11,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:11,538 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:17:11,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:11,739 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:17:11,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:11 WrapperNode [2024-10-31 22:17:11,740 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:11,741 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:11,742 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:17:11,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:17:11,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:11" (1/1) ... [2024-10-31 22:17:11,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:11" (1/1) ... [2024-10-31 22:17:11,811 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 171 [2024-10-31 22:17:11,812 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:11,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:17:11,813 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:17:11,813 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:17:11,831 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:11" (1/1) ... [2024-10-31 22:17:11,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:11" (1/1) ... [2024-10-31 22:17:11,836 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:11" (1/1) ... [2024-10-31 22:17:11,870 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 6, 3, 5]. 38 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 0, 1]. The 5 writes are split as follows [0, 2, 2, 1]. [2024-10-31 22:17:11,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:11" (1/1) ... [2024-10-31 22:17:11,871 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:11" (1/1) ... [2024-10-31 22:17:11,878 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:11" (1/1) ... [2024-10-31 22:17:11,883 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:11" (1/1) ... [2024-10-31 22:17:11,885 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:11" (1/1) ... [2024-10-31 22:17:11,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:11" (1/1) ... [2024-10-31 22:17:11,894 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:17:11,895 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:17:11,899 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:17:11,899 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:17:11,900 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:11" (1/1) ... [2024-10-31 22:17:11,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:17:11,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2c80e2-9184-447f-b7ce-e8590a2c7b29/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:11,935 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2c80e2-9184-447f-b7ce-e8590a2c7b29/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:11,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2c80e2-9184-447f-b7ce-e8590a2c7b29/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:17:11,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:17:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:17:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:17:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-31 22:17:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-31 22:17:11,972 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-31 22:17:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:17:11,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:17:11,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:17:11,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-31 22:17:11,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:17:11,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:17:11,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:17:11,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:17:11,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:17:11,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:17:11,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:17:11,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:17:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:17:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:17:11,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:17:11,980 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:17:12,143 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:17:12,150 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:17:12,745 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:17:12,745 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:17:13,466 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:17:13,467 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-31 22:17:13,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:13 BoogieIcfgContainer [2024-10-31 22:17:13,468 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:17:13,471 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:17:13,472 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:17:13,477 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:17:13,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:17:10" (1/3) ... [2024-10-31 22:17:13,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5719f7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:17:13, skipping insertion in model container [2024-10-31 22:17:13,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:11" (2/3) ... [2024-10-31 22:17:13,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5719f7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:17:13, skipping insertion in model container [2024-10-31 22:17:13,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:13" (3/3) ... [2024-10-31 22:17:13,483 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2024-10-31 22:17:13,504 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:17:13,504 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-10-31 22:17:13,505 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:17:13,600 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:17:13,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 57 transitions, 118 flow [2024-10-31 22:17:13,697 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-31 22:17:13,697 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:17:13,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 146 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2024-10-31 22:17:13,703 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 57 transitions, 118 flow [2024-10-31 22:17:13,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 57 transitions, 118 flow [2024-10-31 22:17:13,723 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:17:13,732 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@2772840, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:17:13,732 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-10-31 22:17:13,737 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:17:13,738 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 22:17:13,738 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:17:13,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:13,739 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:17:13,739 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-31 22:17:13,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:13,746 INFO L85 PathProgramCache]: Analyzing trace with hash 520859, now seen corresponding path program 1 times [2024-10-31 22:17:13,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:13,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462114024] [2024-10-31 22:17:13,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:13,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:14,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:14,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:14,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462114024] [2024-10-31 22:17:14,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462114024] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:14,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:14,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:17:14,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286378241] [2024-10-31 22:17:14,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:14,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:17:14,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:14,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:17:14,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:17:14,618 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-10-31 22:17:14,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 118 flow. Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 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) [2024-10-31 22:17:14,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:14,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-10-31 22:17:14,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:14,794 INFO L124 PetriNetUnfolderBase]: 55/191 cut-off events. [2024-10-31 22:17:14,794 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:17:14,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 191 events. 55/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 712 event pairs, 49 based on Foata normal form. 3/119 useless extension candidates. Maximal degree in co-relation 317. Up to 135 conditions per place. [2024-10-31 22:17:14,799 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 30 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2024-10-31 22:17:14,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 164 flow [2024-10-31 22:17:14,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:17:14,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 22:17:14,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 77 transitions. [2024-10-31 22:17:14,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6754385964912281 [2024-10-31 22:17:14,817 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 118 flow. Second operand 2 states and 77 transitions. [2024-10-31 22:17:14,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 164 flow [2024-10-31 22:17:14,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 50 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:17:14,825 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 104 flow [2024-10-31 22:17:14,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2024-10-31 22:17:14,834 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -5 predicate places. [2024-10-31 22:17:14,834 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 104 flow [2024-10-31 22:17:14,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 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) [2024-10-31 22:17:14,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:14,835 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:17:14,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:17:14,836 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-31 22:17:14,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:14,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1660715686, now seen corresponding path program 1 times [2024-10-31 22:17:14,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:14,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631259776] [2024-10-31 22:17:14,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:14,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:15,229 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:15,298 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:15,299 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:17:15,302 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (59 of 60 remaining) [2024-10-31 22:17:15,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 60 remaining) [2024-10-31 22:17:15,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 60 remaining) [2024-10-31 22:17:15,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 60 remaining) [2024-10-31 22:17:15,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 60 remaining) [2024-10-31 22:17:15,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 60 remaining) [2024-10-31 22:17:15,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 60 remaining) [2024-10-31 22:17:15,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 60 remaining) [2024-10-31 22:17:15,308 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 60 remaining) [2024-10-31 22:17:15,308 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (50 of 60 remaining) [2024-10-31 22:17:15,308 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 60 remaining) [2024-10-31 22:17:15,309 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 60 remaining) [2024-10-31 22:17:15,309 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 60 remaining) [2024-10-31 22:17:15,309 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 60 remaining) [2024-10-31 22:17:15,309 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 60 remaining) [2024-10-31 22:17:15,310 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 60 remaining) [2024-10-31 22:17:15,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (43 of 60 remaining) [2024-10-31 22:17:15,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (42 of 60 remaining) [2024-10-31 22:17:15,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 60 remaining) [2024-10-31 22:17:15,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 60 remaining) [2024-10-31 22:17:15,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 60 remaining) [2024-10-31 22:17:15,313 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 60 remaining) [2024-10-31 22:17:15,313 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 60 remaining) [2024-10-31 22:17:15,313 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 60 remaining) [2024-10-31 22:17:15,314 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 60 remaining) [2024-10-31 22:17:15,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 60 remaining) [2024-10-31 22:17:15,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 60 remaining) [2024-10-31 22:17:15,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 60 remaining) [2024-10-31 22:17:15,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 60 remaining) [2024-10-31 22:17:15,317 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 60 remaining) [2024-10-31 22:17:15,317 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (29 of 60 remaining) [2024-10-31 22:17:15,317 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 60 remaining) [2024-10-31 22:17:15,317 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 60 remaining) [2024-10-31 22:17:15,318 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 60 remaining) [2024-10-31 22:17:15,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 60 remaining) [2024-10-31 22:17:15,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 60 remaining) [2024-10-31 22:17:15,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 60 remaining) [2024-10-31 22:17:15,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 60 remaining) [2024-10-31 22:17:15,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 60 remaining) [2024-10-31 22:17:15,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (20 of 60 remaining) [2024-10-31 22:17:15,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 60 remaining) [2024-10-31 22:17:15,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 60 remaining) [2024-10-31 22:17:15,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 60 remaining) [2024-10-31 22:17:15,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 60 remaining) [2024-10-31 22:17:15,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 60 remaining) [2024-10-31 22:17:15,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 60 remaining) [2024-10-31 22:17:15,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (13 of 60 remaining) [2024-10-31 22:17:15,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (12 of 60 remaining) [2024-10-31 22:17:15,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 60 remaining) [2024-10-31 22:17:15,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 60 remaining) [2024-10-31 22:17:15,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 60 remaining) [2024-10-31 22:17:15,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 60 remaining) [2024-10-31 22:17:15,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 60 remaining) [2024-10-31 22:17:15,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 60 remaining) [2024-10-31 22:17:15,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 60 remaining) [2024-10-31 22:17:15,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 60 remaining) [2024-10-31 22:17:15,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 60 remaining) [2024-10-31 22:17:15,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 60 remaining) [2024-10-31 22:17:15,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 60 remaining) [2024-10-31 22:17:15,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 60 remaining) [2024-10-31 22:17:15,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:17:15,329 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 22:17:15,334 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:17:15,335 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:17:15,460 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:17:15,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 107 transitions, 224 flow [2024-10-31 22:17:15,503 INFO L124 PetriNetUnfolderBase]: 6/116 cut-off events. [2024-10-31 22:17:15,503 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:17:15,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 116 events. 6/116 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 459 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 103. Up to 3 conditions per place. [2024-10-31 22:17:15,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 107 transitions, 224 flow [2024-10-31 22:17:15,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 107 transitions, 224 flow [2024-10-31 22:17:15,512 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:17:15,514 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@2772840, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:17:15,514 INFO L334 AbstractCegarLoop]: Starting to check reachability of 89 error locations. [2024-10-31 22:17:15,518 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:17:15,518 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 22:17:15,519 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:17:15,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:15,519 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:17:15,519 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-31 22:17:15,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:15,520 INFO L85 PathProgramCache]: Analyzing trace with hash 627110, now seen corresponding path program 1 times [2024-10-31 22:17:15,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:15,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948413942] [2024-10-31 22:17:15,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:15,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:16,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:16,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948413942] [2024-10-31 22:17:16,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948413942] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:16,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:16,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:17:16,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622061474] [2024-10-31 22:17:16,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:16,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:17:16,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:16,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:17:16,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:17:16,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2024-10-31 22:17:16,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 107 transitions, 224 flow. Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:16,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:16,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2024-10-31 22:17:16,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:17,617 INFO L124 PetriNetUnfolderBase]: 3609/7017 cut-off events. [2024-10-31 22:17:17,617 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-10-31 22:17:17,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12815 conditions, 7017 events. 3609/7017 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 53265 event pairs, 3291 based on Foata normal form. 159/3914 useless extension candidates. Maximal degree in co-relation 11881. Up to 5715 conditions per place. [2024-10-31 22:17:17,678 INFO L140 encePairwiseOnDemand]: 98/107 looper letters, 57 selfloop transitions, 0 changer transitions 0/96 dead transitions. [2024-10-31 22:17:17,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 96 transitions, 316 flow [2024-10-31 22:17:17,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:17:17,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 22:17:17,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 146 transitions. [2024-10-31 22:17:17,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6822429906542056 [2024-10-31 22:17:17,682 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 224 flow. Second operand 2 states and 146 transitions. [2024-10-31 22:17:17,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 96 transitions, 316 flow [2024-10-31 22:17:17,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:17:17,688 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 202 flow [2024-10-31 22:17:17,688 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=202, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2024-10-31 22:17:17,689 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -8 predicate places. [2024-10-31 22:17:17,689 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 202 flow [2024-10-31 22:17:17,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:17,689 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:17,690 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:17:17,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:17:17,690 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-31 22:17:17,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:17,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1506266465, now seen corresponding path program 1 times [2024-10-31 22:17:17,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:17,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345389987] [2024-10-31 22:17:17,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:17,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:18,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:18,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345389987] [2024-10-31 22:17:18,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345389987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:18,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:18,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:17:18,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140839023] [2024-10-31 22:17:18,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:18,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:17:18,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:18,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:18,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:17:18,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 107 [2024-10-31 22:17:18,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:18,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:18,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 107 [2024-10-31 22:17:18,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:20,618 INFO L124 PetriNetUnfolderBase]: 7152/13363 cut-off events. [2024-10-31 22:17:20,618 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-10-31 22:17:20,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24739 conditions, 13363 events. 7152/13363 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 102798 event pairs, 2576 based on Foata normal form. 0/7631 useless extension candidates. Maximal degree in co-relation 24734. Up to 6474 conditions per place. [2024-10-31 22:17:20,724 INFO L140 encePairwiseOnDemand]: 93/107 looper letters, 106 selfloop transitions, 8 changer transitions 0/146 dead transitions. [2024-10-31 22:17:20,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 146 transitions, 535 flow [2024-10-31 22:17:20,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:17:20,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:17:20,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2024-10-31 22:17:20,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6822429906542056 [2024-10-31 22:17:20,727 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 202 flow. Second operand 3 states and 219 transitions. [2024-10-31 22:17:20,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 146 transitions, 535 flow [2024-10-31 22:17:20,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 146 transitions, 535 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:17:20,732 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 274 flow [2024-10-31 22:17:20,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2024-10-31 22:17:20,734 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -4 predicate places. [2024-10-31 22:17:20,734 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 274 flow [2024-10-31 22:17:20,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:20,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:20,735 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:17:20,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:17:20,735 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-31 22:17:20,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:20,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1506266466, now seen corresponding path program 1 times [2024-10-31 22:17:20,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:20,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580304881] [2024-10-31 22:17:20,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:20,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:21,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:21,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580304881] [2024-10-31 22:17:21,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580304881] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:21,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:21,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:17:21,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860100290] [2024-10-31 22:17:21,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:21,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:17:21,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:21,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:21,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:17:21,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 107 [2024-10-31 22:17:21,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:21,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:21,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 107 [2024-10-31 22:17:21,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:23,431 INFO L124 PetriNetUnfolderBase]: 5509/10797 cut-off events. [2024-10-31 22:17:23,432 INFO L125 PetriNetUnfolderBase]: For 1474/1549 co-relation queries the response was YES. [2024-10-31 22:17:23,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21293 conditions, 10797 events. 5509/10797 cut-off events. For 1474/1549 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 83708 event pairs, 1883 based on Foata normal form. 786/7350 useless extension candidates. Maximal degree in co-relation 21286. Up to 7271 conditions per place. [2024-10-31 22:17:23,527 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 85 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2024-10-31 22:17:23,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 126 transitions, 503 flow [2024-10-31 22:17:23,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:17:23,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:17:23,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2024-10-31 22:17:23,529 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.616822429906542 [2024-10-31 22:17:23,530 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 274 flow. Second operand 3 states and 198 transitions. [2024-10-31 22:17:23,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 126 transitions, 503 flow [2024-10-31 22:17:23,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 126 transitions, 487 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:17:23,540 INFO L231 Difference]: Finished difference. Result has 96 places, 97 transitions, 252 flow [2024-10-31 22:17:23,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=96, PETRI_TRANSITIONS=97} [2024-10-31 22:17:23,542 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -10 predicate places. [2024-10-31 22:17:23,542 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 97 transitions, 252 flow [2024-10-31 22:17:23,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:23,543 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:23,543 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-31 22:17:23,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:17:23,543 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-31 22:17:23,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:23,544 INFO L85 PathProgramCache]: Analyzing trace with hash 904381904, now seen corresponding path program 1 times [2024-10-31 22:17:23,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:23,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092929456] [2024-10-31 22:17:23,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:23,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:23,935 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:23,957 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:23,957 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:17:23,957 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (88 of 89 remaining) [2024-10-31 22:17:23,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 89 remaining) [2024-10-31 22:17:23,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 89 remaining) [2024-10-31 22:17:23,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 89 remaining) [2024-10-31 22:17:23,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 89 remaining) [2024-10-31 22:17:23,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 89 remaining) [2024-10-31 22:17:23,959 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 89 remaining) [2024-10-31 22:17:23,959 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 89 remaining) [2024-10-31 22:17:23,959 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 89 remaining) [2024-10-31 22:17:23,959 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (79 of 89 remaining) [2024-10-31 22:17:23,959 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 89 remaining) [2024-10-31 22:17:23,960 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 89 remaining) [2024-10-31 22:17:23,960 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 89 remaining) [2024-10-31 22:17:23,960 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 89 remaining) [2024-10-31 22:17:23,960 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 89 remaining) [2024-10-31 22:17:23,960 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 89 remaining) [2024-10-31 22:17:23,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (72 of 89 remaining) [2024-10-31 22:17:23,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (71 of 89 remaining) [2024-10-31 22:17:23,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 89 remaining) [2024-10-31 22:17:23,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 89 remaining) [2024-10-31 22:17:23,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 89 remaining) [2024-10-31 22:17:23,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 89 remaining) [2024-10-31 22:17:23,962 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 89 remaining) [2024-10-31 22:17:23,962 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 89 remaining) [2024-10-31 22:17:23,962 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 89 remaining) [2024-10-31 22:17:23,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 89 remaining) [2024-10-31 22:17:23,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 89 remaining) [2024-10-31 22:17:23,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 89 remaining) [2024-10-31 22:17:23,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 89 remaining) [2024-10-31 22:17:23,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 89 remaining) [2024-10-31 22:17:23,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (58 of 89 remaining) [2024-10-31 22:17:23,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 89 remaining) [2024-10-31 22:17:23,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 89 remaining) [2024-10-31 22:17:23,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 89 remaining) [2024-10-31 22:17:23,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 89 remaining) [2024-10-31 22:17:23,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 89 remaining) [2024-10-31 22:17:23,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 89 remaining) [2024-10-31 22:17:23,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 89 remaining) [2024-10-31 22:17:23,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 89 remaining) [2024-10-31 22:17:23,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (49 of 89 remaining) [2024-10-31 22:17:23,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 89 remaining) [2024-10-31 22:17:23,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 89 remaining) [2024-10-31 22:17:23,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 89 remaining) [2024-10-31 22:17:23,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 89 remaining) [2024-10-31 22:17:23,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 89 remaining) [2024-10-31 22:17:23,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 89 remaining) [2024-10-31 22:17:23,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (42 of 89 remaining) [2024-10-31 22:17:23,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (41 of 89 remaining) [2024-10-31 22:17:23,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 89 remaining) [2024-10-31 22:17:23,968 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 89 remaining) [2024-10-31 22:17:23,968 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 89 remaining) [2024-10-31 22:17:23,968 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 89 remaining) [2024-10-31 22:17:23,968 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 89 remaining) [2024-10-31 22:17:23,968 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 89 remaining) [2024-10-31 22:17:23,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 89 remaining) [2024-10-31 22:17:23,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 89 remaining) [2024-10-31 22:17:23,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 89 remaining) [2024-10-31 22:17:23,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 89 remaining) [2024-10-31 22:17:23,970 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 89 remaining) [2024-10-31 22:17:23,970 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 89 remaining) [2024-10-31 22:17:23,970 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 89 remaining) [2024-10-31 22:17:23,970 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 89 remaining) [2024-10-31 22:17:23,970 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 89 remaining) [2024-10-31 22:17:23,970 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 89 remaining) [2024-10-31 22:17:23,971 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 89 remaining) [2024-10-31 22:17:23,971 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 89 remaining) [2024-10-31 22:17:23,971 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 89 remaining) [2024-10-31 22:17:23,971 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 89 remaining) [2024-10-31 22:17:23,971 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (20 of 89 remaining) [2024-10-31 22:17:23,971 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 89 remaining) [2024-10-31 22:17:23,972 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 89 remaining) [2024-10-31 22:17:23,972 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 89 remaining) [2024-10-31 22:17:23,972 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 89 remaining) [2024-10-31 22:17:23,972 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 89 remaining) [2024-10-31 22:17:23,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 89 remaining) [2024-10-31 22:17:23,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (13 of 89 remaining) [2024-10-31 22:17:23,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (12 of 89 remaining) [2024-10-31 22:17:23,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 89 remaining) [2024-10-31 22:17:23,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 89 remaining) [2024-10-31 22:17:23,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 89 remaining) [2024-10-31 22:17:23,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 89 remaining) [2024-10-31 22:17:23,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 89 remaining) [2024-10-31 22:17:23,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 89 remaining) [2024-10-31 22:17:23,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 89 remaining) [2024-10-31 22:17:23,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 89 remaining) [2024-10-31 22:17:23,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 89 remaining) [2024-10-31 22:17:23,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 89 remaining) [2024-10-31 22:17:23,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 89 remaining) [2024-10-31 22:17:23,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 89 remaining) [2024-10-31 22:17:23,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:17:23,976 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-31 22:17:23,977 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:17:23,977 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-31 22:17:24,068 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:17:24,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 157 transitions, 332 flow [2024-10-31 22:17:24,105 INFO L124 PetriNetUnfolderBase]: 9/171 cut-off events. [2024-10-31 22:17:24,105 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 22:17:24,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 171 events. 9/171 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 804 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 152. Up to 4 conditions per place. [2024-10-31 22:17:24,107 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 157 transitions, 332 flow [2024-10-31 22:17:24,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 157 transitions, 332 flow [2024-10-31 22:17:24,112 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:17:24,113 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@2772840, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:17:24,113 INFO L334 AbstractCegarLoop]: Starting to check reachability of 118 error locations. [2024-10-31 22:17:24,115 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:17:24,116 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 22:17:24,116 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:17:24,116 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:24,116 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:17:24,116 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2024-10-31 22:17:24,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:24,117 INFO L85 PathProgramCache]: Analyzing trace with hash 783011, now seen corresponding path program 1 times [2024-10-31 22:17:24,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:24,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895604768] [2024-10-31 22:17:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:24,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:24,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:24,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:24,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895604768] [2024-10-31 22:17:24,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895604768] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:24,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:24,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:17:24,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847818327] [2024-10-31 22:17:24,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:24,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:17:24,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:24,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:17:24,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:17:24,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 157 [2024-10-31 22:17:24,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 157 transitions, 332 flow. Second operand has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:24,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:24,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 157 [2024-10-31 22:17:24,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand