./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe002_rmo.oepc.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_cfc502d7-140f-461a-be3f-68a216a06514/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc502d7-140f-461a-be3f-68a216a06514/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_cfc502d7-140f-461a-be3f-68a216a06514/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc502d7-140f-461a-be3f-68a216a06514/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe002_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc502d7-140f-461a-be3f-68a216a06514/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_cfc502d7-140f-461a-be3f-68a216a06514/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 303fb09b32b7ab2953a798b1c14f8a25fd3d0e1788678487baddbc8a976b0d5f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:00:43,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:00:43,143 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc502d7-140f-461a-be3f-68a216a06514/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:00:43,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:00:43,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:00:43,200 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:00:43,200 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:00:43,201 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:00:43,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:00:43,202 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:00:43,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:00:43,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:00:43,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:00:43,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:00:43,205 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:00:43,206 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:00:43,206 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:00:43,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:00:43,207 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:00:43,208 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:00:43,208 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:00:43,209 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:00:43,209 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:00:43,210 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:00:43,210 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:00:43,210 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:00:43,211 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:00:43,211 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:00:43,216 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:00:43,216 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:00:43,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:00:43,217 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:00:43,217 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:00:43,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:00:43,218 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:00:43,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:00:43,219 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:00:43,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:00:43,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:00:43,220 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:00:43,220 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:00:43,222 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:00:43,223 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_cfc502d7-140f-461a-be3f-68a216a06514/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc502d7-140f-461a-be3f-68a216a06514/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 303fb09b32b7ab2953a798b1c14f8a25fd3d0e1788678487baddbc8a976b0d5f [2024-10-31 22:00:43,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:00:43,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:00:43,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:00:43,595 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:00:43,596 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:00:43,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc502d7-140f-461a-be3f-68a216a06514/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-wmm/safe002_rmo.oepc.i Unable to find full path for "g++" [2024-10-31 22:00:46,082 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:00:46,445 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:00:46,447 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc502d7-140f-461a-be3f-68a216a06514/sv-benchmarks/c/pthread-wmm/safe002_rmo.oepc.i [2024-10-31 22:00:46,463 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc502d7-140f-461a-be3f-68a216a06514/bin/uautomizer-verify-4GaUIPS5ZU/data/e37540a07/83b8dac635b34707a12134ec8334599f/FLAG89f50d1c5 [2024-10-31 22:00:46,698 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc502d7-140f-461a-be3f-68a216a06514/bin/uautomizer-verify-4GaUIPS5ZU/data/e37540a07/83b8dac635b34707a12134ec8334599f [2024-10-31 22:00:46,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:00:46,702 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:00:46,703 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:00:46,704 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:00:46,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:00:46,714 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:00:46" (1/1) ... [2024-10-31 22:00:46,716 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d85d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:46, skipping insertion in model container [2024-10-31 22:00:46,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:00:46" (1/1) ... [2024-10-31 22:00:46,782 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:00:47,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:00:47,323 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:00:47,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:00:47,541 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:00:47,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:47 WrapperNode [2024-10-31 22:00:47,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:00:47,544 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:00:47,544 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:00:47,545 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:00:47,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:47" (1/1) ... [2024-10-31 22:00:47,584 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:47" (1/1) ... [2024-10-31 22:00:47,632 INFO L138 Inliner]: procedures = 175, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 162 [2024-10-31 22:00:47,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:00:47,638 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:00:47,638 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:00:47,639 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:00:47,655 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:47" (1/1) ... [2024-10-31 22:00:47,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:47" (1/1) ... [2024-10-31 22:00:47,665 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:47" (1/1) ... [2024-10-31 22:00:47,704 INFO L175 MemorySlicer]: Split 30 memory accesses to 2 slices as follows [2, 28]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 11 writes are split as follows [0, 11]. [2024-10-31 22:00:47,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:47" (1/1) ... [2024-10-31 22:00:47,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:47" (1/1) ... [2024-10-31 22:00:47,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:47" (1/1) ... [2024-10-31 22:00:47,729 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:47" (1/1) ... [2024-10-31 22:00:47,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:47" (1/1) ... [2024-10-31 22:00:47,739 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:47" (1/1) ... [2024-10-31 22:00:47,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:00:47,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:00:47,751 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:00:47,751 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:00:47,752 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:47" (1/1) ... [2024-10-31 22:00:47,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:00:47,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc502d7-140f-461a-be3f-68a216a06514/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:00:47,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc502d7-140f-461a-be3f-68a216a06514/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:00:47,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc502d7-140f-461a-be3f-68a216a06514/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:00:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:00:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:00:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:00:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:00:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:00:47,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:00:47,825 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-31 22:00:47,825 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-31 22:00:47,825 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-31 22:00:47,825 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-31 22:00:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-31 22:00:47,827 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-31 22:00:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:00:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:00:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:00:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:00:47,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:00:47,830 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 22:00:48,017 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:00:48,020 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:00:48,884 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:00:48,886 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:00:49,837 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:00:49,838 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:00:49,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:00:49 BoogieIcfgContainer [2024-10-31 22:00:49,838 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:00:49,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:00:49,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:00:49,848 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:00:49,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:00:46" (1/3) ... [2024-10-31 22:00:49,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd0727b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:00:49, skipping insertion in model container [2024-10-31 22:00:49,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:47" (2/3) ... [2024-10-31 22:00:49,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd0727b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:00:49, skipping insertion in model container [2024-10-31 22:00:49,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:00:49" (3/3) ... [2024-10-31 22:00:49,853 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_rmo.oepc.i [2024-10-31 22:00:49,874 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:00:49,874 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2024-10-31 22:00:49,874 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:00:50,182 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:00:50,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 97 transitions, 206 flow [2024-10-31 22:00:50,330 INFO L124 PetriNetUnfolderBase]: 2/94 cut-off events. [2024-10-31 22:00:50,331 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:00:50,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 94 events. 2/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 420 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2024-10-31 22:00:50,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 97 transitions, 206 flow [2024-10-31 22:00:50,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 94 transitions, 197 flow [2024-10-31 22:00:50,362 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:00:50,374 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;@3f668bbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:00:50,374 INFO L334 AbstractCegarLoop]: Starting to check reachability of 95 error locations. [2024-10-31 22:00:50,379 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:00:50,381 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-10-31 22:00:50,381 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:00:50,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:50,382 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-31 22:00:50,383 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2024-10-31 22:00:50,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:50,389 INFO L85 PathProgramCache]: Analyzing trace with hash 28489263, now seen corresponding path program 1 times [2024-10-31 22:00:50,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:50,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970102137] [2024-10-31 22:00:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:50,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:50,843 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 22:00:50,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:50,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970102137] [2024-10-31 22:00:50,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970102137] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:50,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:50,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:00:50,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141506297] [2024-10-31 22:00:50,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:50,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:00:50,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:50,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:00:50,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:00:50,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 97 [2024-10-31 22:00:50,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 94 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 22:00:50,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:50,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 97 [2024-10-31 22:00:50,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:55,472 INFO L124 PetriNetUnfolderBase]: 8651/13524 cut-off events. [2024-10-31 22:00:55,472 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-31 22:00:55,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25839 conditions, 13524 events. 8651/13524 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 105281 event pairs, 8651 based on Foata normal form. 504/8606 useless extension candidates. Maximal degree in co-relation 25828. Up to 12244 conditions per place. [2024-10-31 22:00:55,627 INFO L140 encePairwiseOnDemand]: 53/97 looper letters, 35 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2024-10-31 22:00:55,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 50 transitions, 181 flow [2024-10-31 22:00:55,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:00:55,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:00:55,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-10-31 22:00:55,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44673539518900346 [2024-10-31 22:00:55,646 INFO L175 Difference]: Start difference. First operand has 102 places, 94 transitions, 197 flow. Second operand 3 states and 130 transitions. [2024-10-31 22:00:55,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 50 transitions, 181 flow [2024-10-31 22:00:55,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 50 transitions, 178 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:00:55,658 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 108 flow [2024-10-31 22:00:55,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=57, 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=108, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-10-31 22:00:55,667 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -43 predicate places. [2024-10-31 22:00:55,669 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 108 flow [2024-10-31 22:00:55,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 22:00:55,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:55,670 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-31 22:00:55,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:00:55,671 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2024-10-31 22:00:55,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:55,673 INFO L85 PathProgramCache]: Analyzing trace with hash 28489264, now seen corresponding path program 1 times [2024-10-31 22:00:55,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:55,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084878880] [2024-10-31 22:00:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:55,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:55,863 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 22:00:55,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:55,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084878880] [2024-10-31 22:00:55,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084878880] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:55,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:55,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:00:55,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626997096] [2024-10-31 22:00:55,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:55,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:00:55,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:55,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:00:55,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:00:55,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 97 [2024-10-31 22:00:55,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 22:00:55,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:55,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 97 [2024-10-31 22:00:55,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:56,801 INFO L124 PetriNetUnfolderBase]: 1442/2473 cut-off events. [2024-10-31 22:00:56,801 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:00:56,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4642 conditions, 2473 events. 1442/2473 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 16627 event pairs, 1442 based on Foata normal form. 0/2292 useless extension candidates. Maximal degree in co-relation 4636. Up to 2133 conditions per place. [2024-10-31 22:00:56,820 INFO L140 encePairwiseOnDemand]: 85/97 looper letters, 23 selfloop transitions, 1 changer transitions 1/39 dead transitions. [2024-10-31 22:00:56,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 39 transitions, 136 flow [2024-10-31 22:00:56,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:00:56,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:00:56,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-10-31 22:00:56,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29896907216494845 [2024-10-31 22:00:56,823 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 108 flow. Second operand 3 states and 87 transitions. [2024-10-31 22:00:56,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 39 transitions, 136 flow [2024-10-31 22:00:56,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 39 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:00:56,825 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 85 flow [2024-10-31 22:00:56,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-10-31 22:00:56,826 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -53 predicate places. [2024-10-31 22:00:56,827 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 85 flow [2024-10-31 22:00:56,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 22:00:56,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:56,827 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:56,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:00:56,828 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2024-10-31 22:00:56,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:56,828 INFO L85 PathProgramCache]: Analyzing trace with hash 729118534, now seen corresponding path program 1 times [2024-10-31 22:00:56,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:56,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693890200] [2024-10-31 22:00:56,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:56,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:57,077 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 22:00:57,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:57,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693890200] [2024-10-31 22:00:57,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693890200] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:57,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:57,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:00:57,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463380910] [2024-10-31 22:00:57,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:57,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:00:57,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:57,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:00:57,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:00:57,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 97 [2024-10-31 22:00:57,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 22:00:57,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:57,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 97 [2024-10-31 22:00:57,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:57,829 INFO L124 PetriNetUnfolderBase]: 1207/2421 cut-off events. [2024-10-31 22:00:57,830 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:00:57,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4256 conditions, 2421 events. 1207/2421 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 17211 event pairs, 275 based on Foata normal form. 0/2289 useless extension candidates. Maximal degree in co-relation 4249. Up to 1393 conditions per place. [2024-10-31 22:00:57,846 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 40 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-10-31 22:00:57,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 209 flow [2024-10-31 22:00:57,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:00:57,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:00:57,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-10-31 22:00:57,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32646048109965636 [2024-10-31 22:00:57,849 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 85 flow. Second operand 3 states and 95 transitions. [2024-10-31 22:00:57,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 209 flow [2024-10-31 22:00:57,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 56 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:00:57,851 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 94 flow [2024-10-31 22:00:57,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2024-10-31 22:00:57,852 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -52 predicate places. [2024-10-31 22:00:57,852 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 94 flow [2024-10-31 22:00:57,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 22:00:57,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:57,853 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:57,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:00:57,853 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2024-10-31 22:00:57,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:57,854 INFO L85 PathProgramCache]: Analyzing trace with hash 603332057, now seen corresponding path program 1 times [2024-10-31 22:00:57,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:57,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56783611] [2024-10-31 22:00:57,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:57,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:58,028 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 22:00:58,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:58,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56783611] [2024-10-31 22:00:58,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56783611] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:58,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:58,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:00:58,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578555089] [2024-10-31 22:00:58,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:58,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:00:58,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:58,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:00:58,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:00:58,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 97 [2024-10-31 22:00:58,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 22:00:58,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:58,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 97 [2024-10-31 22:00:58,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:58,757 INFO L124 PetriNetUnfolderBase]: 1125/2299 cut-off events. [2024-10-31 22:00:58,758 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2024-10-31 22:00:58,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4394 conditions, 2299 events. 1125/2299 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16352 event pairs, 255 based on Foata normal form. 0/2267 useless extension candidates. Maximal degree in co-relation 4385. Up to 1270 conditions per place. [2024-10-31 22:00:58,773 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 39 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-10-31 22:00:58,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 212 flow [2024-10-31 22:00:58,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:00:58,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:00:58,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-10-31 22:00:58,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28350515463917525 [2024-10-31 22:00:58,775 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 94 flow. Second operand 4 states and 110 transitions. [2024-10-31 22:00:58,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 212 flow [2024-10-31 22:00:58,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:00:58,780 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 90 flow [2024-10-31 22:00:58,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2024-10-31 22:00:58,781 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -52 predicate places. [2024-10-31 22:00:58,782 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 90 flow [2024-10-31 22:00:58,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 22:00:58,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:58,783 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:58,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:00:58,784 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2024-10-31 22:00:58,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:58,785 INFO L85 PathProgramCache]: Analyzing trace with hash 603332058, now seen corresponding path program 1 times [2024-10-31 22:00:58,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:58,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172450532] [2024-10-31 22:00:58,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:58,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:59,196 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 22:00:59,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:59,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172450532] [2024-10-31 22:00:59,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172450532] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:59,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:59,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:00:59,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435546404] [2024-10-31 22:00:59,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:59,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:00:59,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:59,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:00:59,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:00:59,199 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 97 [2024-10-31 22:00:59,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 22:00:59,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:00:59,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 97 [2024-10-31 22:00:59,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:00:59,890 INFO L124 PetriNetUnfolderBase]: 1043/2177 cut-off events. [2024-10-31 22:00:59,891 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2024-10-31 22:00:59,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4110 conditions, 2177 events. 1043/2177 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15463 event pairs, 235 based on Foata normal form. 40/2205 useless extension candidates. Maximal degree in co-relation 4101. Up to 1148 conditions per place. [2024-10-31 22:00:59,908 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 38 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-10-31 22:00:59,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 54 transitions, 206 flow [2024-10-31 22:00:59,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:00:59,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:00:59,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-10-31 22:00:59,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2809278350515464 [2024-10-31 22:00:59,912 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 90 flow. Second operand 4 states and 109 transitions. [2024-10-31 22:00:59,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 54 transitions, 206 flow [2024-10-31 22:00:59,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 54 transitions, 201 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:00:59,914 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 85 flow [2024-10-31 22:00:59,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=85, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2024-10-31 22:00:59,915 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -53 predicate places. [2024-10-31 22:00:59,916 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 85 flow [2024-10-31 22:00:59,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 22:00:59,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:00:59,916 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:59,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:00:59,917 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2024-10-31 22:00:59,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:59,917 INFO L85 PathProgramCache]: Analyzing trace with hash -69133551, now seen corresponding path program 1 times [2024-10-31 22:00:59,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:59,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939110302] [2024-10-31 22:00:59,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:59,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:59,997 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 22:00:59,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:59,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939110302] [2024-10-31 22:00:59,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939110302] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:59,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:59,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:00:59,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791486526] [2024-10-31 22:00:59,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:59,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:00:59,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:00,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:00,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:00,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 97 [2024-10-31 22:01:00,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 22:01:00,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:00,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 97 [2024-10-31 22:01:00,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:00,860 INFO L124 PetriNetUnfolderBase]: 1043/1834 cut-off events. [2024-10-31 22:01:00,861 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2024-10-31 22:01:00,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3766 conditions, 1834 events. 1043/1834 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11850 event pairs, 1043 based on Foata normal form. 60/1857 useless extension candidates. Maximal degree in co-relation 3758. Up to 1554 conditions per place. [2024-10-31 22:01:00,878 INFO L140 encePairwiseOnDemand]: 95/97 looper letters, 20 selfloop transitions, 1 changer transitions 1/35 dead transitions. [2024-10-31 22:01:00,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 35 transitions, 127 flow [2024-10-31 22:01:00,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:00,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:01:00,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-10-31 22:01:00,880 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24398625429553264 [2024-10-31 22:01:00,880 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 85 flow. Second operand 3 states and 71 transitions. [2024-10-31 22:01:00,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 35 transitions, 127 flow [2024-10-31 22:01:00,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 35 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:01:00,882 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 80 flow [2024-10-31 22:01:00,883 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2024-10-31 22:01:00,883 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -54 predicate places. [2024-10-31 22:01:00,884 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 80 flow [2024-10-31 22:01:00,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 22:01:00,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:00,884 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:00,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:01:00,885 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2024-10-31 22:01:00,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:00,886 INFO L85 PathProgramCache]: Analyzing trace with hash -69134905, now seen corresponding path program 1 times [2024-10-31 22:01:00,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:00,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027961537] [2024-10-31 22:01:00,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:00,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:01,224 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 22:01:01,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:01,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027961537] [2024-10-31 22:01:01,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027961537] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:01,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:01,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:01:01,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840270057] [2024-10-31 22:01:01,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:01,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:01:01,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:01,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:01:01,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:01:01,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 97 [2024-10-31 22:01:01,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 22:01:01,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:01,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 97 [2024-10-31 22:01:01,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:02,374 INFO L124 PetriNetUnfolderBase]: 1995/3279 cut-off events. [2024-10-31 22:01:02,375 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:01:02,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6735 conditions, 3279 events. 1995/3279 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 19720 event pairs, 225 based on Foata normal form. 120/3388 useless extension candidates. Maximal degree in co-relation 6727. Up to 1861 conditions per place. [2024-10-31 22:01:02,396 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 46 selfloop transitions, 5 changer transitions 1/61 dead transitions. [2024-10-31 22:01:02,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 246 flow [2024-10-31 22:01:02,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:01:02,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:01:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-10-31 22:01:02,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27319587628865977 [2024-10-31 22:01:02,398 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 80 flow. Second operand 4 states and 106 transitions. [2024-10-31 22:01:02,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 246 flow [2024-10-31 22:01:02,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 61 transitions, 245 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:01:02,401 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 113 flow [2024-10-31 22:01:02,401 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2024-10-31 22:01:02,406 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -51 predicate places. [2024-10-31 22:01:02,406 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 113 flow [2024-10-31 22:01:02,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 22:01:02,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:02,407 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:02,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:01:02,408 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2024-10-31 22:01:02,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:02,408 INFO L85 PathProgramCache]: Analyzing trace with hash -68705015, now seen corresponding path program 1 times [2024-10-31 22:01:02,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:02,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201654513] [2024-10-31 22:01:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:02,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:02,913 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 22:01:02,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:02,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201654513] [2024-10-31 22:01:02,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201654513] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:02,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:02,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:01:02,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298619261] [2024-10-31 22:01:02,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:02,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:01:02,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:02,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:01:02,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:01:02,934 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 97 [2024-10-31 22:01:02,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 22:01:02,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:02,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 97 [2024-10-31 22:01:02,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:03,613 INFO L124 PetriNetUnfolderBase]: 1195/1987 cut-off events. [2024-10-31 22:01:03,614 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-10-31 22:01:03,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4750 conditions, 1987 events. 1195/1987 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 10465 event pairs, 123 based on Foata normal form. 96/2072 useless extension candidates. Maximal degree in co-relation 4739. Up to 769 conditions per place. [2024-10-31 22:01:03,629 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 58 selfloop transitions, 8 changer transitions 1/76 dead transitions. [2024-10-31 22:01:03,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 352 flow [2024-10-31 22:01:03,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:01:03,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:01:03,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-10-31 22:01:03,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27628865979381445 [2024-10-31 22:01:03,632 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 113 flow. Second operand 5 states and 134 transitions. [2024-10-31 22:01:03,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 352 flow [2024-10-31 22:01:03,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 76 transitions, 342 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-31 22:01:03,635 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 153 flow [2024-10-31 22:01:03,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2024-10-31 22:01:03,636 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -47 predicate places. [2024-10-31 22:01:03,636 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 153 flow [2024-10-31 22:01:03,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 22:01:03,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:03,637 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:03,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:01:03,637 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2024-10-31 22:01:03,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:03,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1954428105, now seen corresponding path program 1 times [2024-10-31 22:01:03,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:03,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446025479] [2024-10-31 22:01:03,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:03,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:04,290 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 22:01:04,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:04,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446025479] [2024-10-31 22:01:04,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446025479] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:04,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:04,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:01:04,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406681162] [2024-10-31 22:01:04,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:04,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:01:04,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:04,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:01:04,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:01:04,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 97 [2024-10-31 22:01:04,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 153 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2024-10-31 22:01:04,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:04,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 97 [2024-10-31 22:01:04,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:04,863 INFO L124 PetriNetUnfolderBase]: 669/1085 cut-off events. [2024-10-31 22:01:04,863 INFO L125 PetriNetUnfolderBase]: For 832/832 co-relation queries the response was YES. [2024-10-31 22:01:04,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2964 conditions, 1085 events. 669/1085 cut-off events. For 832/832 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4811 event pairs, 103 based on Foata normal form. 44/1118 useless extension candidates. Maximal degree in co-relation 2951. Up to 352 conditions per place. [2024-10-31 22:01:04,872 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 50 selfloop transitions, 11 changer transitions 1/71 dead transitions. [2024-10-31 22:01:04,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 71 transitions, 353 flow [2024-10-31 22:01:04,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:01:04,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:01:04,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-10-31 22:01:04,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24398625429553264 [2024-10-31 22:01:04,875 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 153 flow. Second operand 6 states and 142 transitions. [2024-10-31 22:01:04,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 71 transitions, 353 flow [2024-10-31 22:01:04,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 71 transitions, 328 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-31 22:01:04,885 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 167 flow [2024-10-31 22:01:04,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=167, PETRI_PLACES=58, PETRI_TRANSITIONS=40} [2024-10-31 22:01:04,888 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -44 predicate places. [2024-10-31 22:01:04,888 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 167 flow [2024-10-31 22:01:04,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2024-10-31 22:01:04,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:04,889 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:04,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:01:04,890 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2024-10-31 22:01:04,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:04,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1834419927, now seen corresponding path program 1 times [2024-10-31 22:01:04,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:04,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002558598] [2024-10-31 22:01:04,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:04,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:05,811 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 22:01:05,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:05,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002558598] [2024-10-31 22:01:05,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002558598] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:05,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:05,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:01:05,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754438903] [2024-10-31 22:01:05,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:05,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:01:05,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:05,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:01:05,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:01:05,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 97 [2024-10-31 22:01:05,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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 22:01:05,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:05,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 97 [2024-10-31 22:01:05,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:06,400 INFO L124 PetriNetUnfolderBase]: 833/1527 cut-off events. [2024-10-31 22:01:06,400 INFO L125 PetriNetUnfolderBase]: For 700/716 co-relation queries the response was YES. [2024-10-31 22:01:06,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3669 conditions, 1527 events. 833/1527 cut-off events. For 700/716 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8524 event pairs, 154 based on Foata normal form. 8/1489 useless extension candidates. Maximal degree in co-relation 3655. Up to 689 conditions per place. [2024-10-31 22:01:06,412 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 30 selfloop transitions, 1 changer transitions 23/71 dead transitions. [2024-10-31 22:01:06,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 71 transitions, 351 flow [2024-10-31 22:01:06,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:01:06,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:01:06,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-10-31 22:01:06,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24914089347079038 [2024-10-31 22:01:06,414 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 167 flow. Second operand 6 states and 145 transitions. [2024-10-31 22:01:06,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 71 transitions, 351 flow [2024-10-31 22:01:06,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 71 transitions, 287 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-10-31 22:01:06,425 INFO L231 Difference]: Finished difference. Result has 59 places, 40 transitions, 122 flow [2024-10-31 22:01:06,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=122, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2024-10-31 22:01:06,427 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -43 predicate places. [2024-10-31 22:01:06,429 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 122 flow [2024-10-31 22:01:06,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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 22:01:06,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:06,430 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:06,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:01:06,430 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2024-10-31 22:01:06,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:06,431 INFO L85 PathProgramCache]: Analyzing trace with hash -303907589, now seen corresponding path program 2 times [2024-10-31 22:01:06,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:06,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576201833] [2024-10-31 22:01:06,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:06,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:10,640 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 22:01:10,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:10,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576201833] [2024-10-31 22:01:10,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576201833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:10,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:10,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:01:10,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015980229] [2024-10-31 22:01:10,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:10,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:01:10,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:01:10,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:01:10,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 97 [2024-10-31 22:01:10,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 40 transitions, 122 flow. Second operand has 10 states, 10 states have (on average 18.8) internal successors, (188), 10 states have internal predecessors, (188), 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 22:01:10,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:10,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 97 [2024-10-31 22:01:10,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand