./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_power.opt.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_47437313-9d38-45c8-82ad-1aefc4824f0c/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47437313-9d38-45c8-82ad-1aefc4824f0c/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_47437313-9d38-45c8-82ad-1aefc4824f0c/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47437313-9d38-45c8-82ad-1aefc4824f0c/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47437313-9d38-45c8-82ad-1aefc4824f0c/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_47437313-9d38-45c8-82ad-1aefc4824f0c/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 3edc5a2d9ce2881b3565fd36253c94b9cf356a0dafd043fa3f9d27823541c09b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:19:31,736 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:19:31,837 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47437313-9d38-45c8-82ad-1aefc4824f0c/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:19:31,842 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:19:31,843 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:19:31,864 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:19:31,865 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:19:31,865 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:19:31,866 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:19:31,867 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:19:31,867 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:19:31,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:19:31,868 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:19:31,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:19:31,869 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:19:31,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:19:31,870 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:19:31,871 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:19:31,871 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:19:31,872 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:19:31,872 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:19:31,873 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:19:31,873 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:19:31,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:19:31,874 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:19:31,875 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:19:31,875 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:19:31,875 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:19:31,876 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:19:31,876 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:19:31,877 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:19:31,877 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:19:31,877 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:19:31,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:19:31,878 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:19:31,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:19:31,879 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:19:31,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:19:31,880 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:19:31,880 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:19:31,880 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:19:31,881 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:19:31,881 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_47437313-9d38-45c8-82ad-1aefc4824f0c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47437313-9d38-45c8-82ad-1aefc4824f0c/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3edc5a2d9ce2881b3565fd36253c94b9cf356a0dafd043fa3f9d27823541c09b [2024-10-31 22:19:32,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:19:32,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:19:32,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:19:32,210 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:19:32,211 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:19:32,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47437313-9d38-45c8-82ad-1aefc4824f0c/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-wmm/safe027_power.opt.i Unable to find full path for "g++" [2024-10-31 22:19:34,442 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:19:34,882 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:19:34,883 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47437313-9d38-45c8-82ad-1aefc4824f0c/sv-benchmarks/c/pthread-wmm/safe027_power.opt.i [2024-10-31 22:19:34,911 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47437313-9d38-45c8-82ad-1aefc4824f0c/bin/uautomizer-verify-4GaUIPS5ZU/data/5efcedef3/bda6f48d9f33446e8fbef87f61495525/FLAG449878fbe [2024-10-31 22:19:35,042 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47437313-9d38-45c8-82ad-1aefc4824f0c/bin/uautomizer-verify-4GaUIPS5ZU/data/5efcedef3/bda6f48d9f33446e8fbef87f61495525 [2024-10-31 22:19:35,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:19:35,048 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:19:35,050 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:19:35,050 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:19:35,060 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:19:35,061 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:19:35" (1/1) ... [2024-10-31 22:19:35,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7031b767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:35, skipping insertion in model container [2024-10-31 22:19:35,066 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:19:35" (1/1) ... [2024-10-31 22:19:35,140 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:19:35,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:19:35,820 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:19:35,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:19:35,985 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:19:35,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:35 WrapperNode [2024-10-31 22:19:35,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:19:35,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:19:35,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:19:35,987 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:19:35,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:35" (1/1) ... [2024-10-31 22:19:36,050 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:35" (1/1) ... [2024-10-31 22:19:36,111 INFO L138 Inliner]: procedures = 176, calls = 73, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 183 [2024-10-31 22:19:36,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:19:36,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:19:36,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:19:36,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:19:36,129 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:35" (1/1) ... [2024-10-31 22:19:36,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:35" (1/1) ... [2024-10-31 22:19:36,140 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:35" (1/1) ... [2024-10-31 22:19:36,178 INFO L175 MemorySlicer]: Split 26 memory accesses to 2 slices as follows [2, 24]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 8 writes are split as follows [0, 8]. [2024-10-31 22:19:36,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:35" (1/1) ... [2024-10-31 22:19:36,179 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:35" (1/1) ... [2024-10-31 22:19:36,199 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:35" (1/1) ... [2024-10-31 22:19:36,202 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:35" (1/1) ... [2024-10-31 22:19:36,208 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:35" (1/1) ... [2024-10-31 22:19:36,214 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:35" (1/1) ... [2024-10-31 22:19:36,222 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:19:36,223 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:19:36,226 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:19:36,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:19:36,228 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:35" (1/1) ... [2024-10-31 22:19:36,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:19:36,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47437313-9d38-45c8-82ad-1aefc4824f0c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:36,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47437313-9d38-45c8-82ad-1aefc4824f0c/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:19:36,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47437313-9d38-45c8-82ad-1aefc4824f0c/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:19:36,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:19:36,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:19:36,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:19:36,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:19:36,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:19:36,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:19:36,314 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-31 22:19:36,314 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-31 22:19:36,314 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-31 22:19:36,314 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-31 22:19:36,314 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-31 22:19:36,314 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-31 22:19:36,315 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-31 22:19:36,315 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-31 22:19:36,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:19:36,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:19:36,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:19:36,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:19:36,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:19:36,318 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 22:19:36,580 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:19:36,583 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:19:37,496 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:19:37,497 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:19:38,501 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:19:38,502 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:19:38,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:19:38 BoogieIcfgContainer [2024-10-31 22:19:38,503 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:19:38,505 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:19:38,505 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:19:38,509 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:19:38,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:19:35" (1/3) ... [2024-10-31 22:19:38,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb56c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:19:38, skipping insertion in model container [2024-10-31 22:19:38,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:35" (2/3) ... [2024-10-31 22:19:38,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb56c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:19:38, skipping insertion in model container [2024-10-31 22:19:38,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:19:38" (3/3) ... [2024-10-31 22:19:38,513 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_power.opt.i [2024-10-31 22:19:38,534 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:19:38,535 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2024-10-31 22:19:38,535 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:19:38,812 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:19:38,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 97 transitions, 210 flow [2024-10-31 22:19:38,955 INFO L124 PetriNetUnfolderBase]: 2/93 cut-off events. [2024-10-31 22:19:38,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:19:38,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 394 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2024-10-31 22:19:38,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 97 transitions, 210 flow [2024-10-31 22:19:38,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 93 transitions, 198 flow [2024-10-31 22:19:38,990 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:19:39,009 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;@731a019d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:19:39,010 INFO L334 AbstractCegarLoop]: Starting to check reachability of 94 error locations. [2024-10-31 22:19:39,020 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:19:39,020 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-10-31 22:19:39,025 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:19:39,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:39,026 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:19:39,026 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:19:39,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:39,037 INFO L85 PathProgramCache]: Analyzing trace with hash 980986844, now seen corresponding path program 1 times [2024-10-31 22:19:39,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:39,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67049261] [2024-10-31 22:19:39,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:39,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,616 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 22:19:39,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:39,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67049261] [2024-10-31 22:19:39,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67049261] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:39,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:39,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:19:39,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157808639] [2024-10-31 22:19:39,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:39,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:39,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:39,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:39,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:39,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-10-31 22:19:39,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 93 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:39,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:39,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-10-31 22:19:39,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:54,619 INFO L124 PetriNetUnfolderBase]: 41670/60435 cut-off events. [2024-10-31 22:19:54,619 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-31 22:19:54,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115766 conditions, 60435 events. 41670/60435 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3712. Compared 491337 event pairs, 41670 based on Foata normal form. 1960/38305 useless extension candidates. Maximal degree in co-relation 115754. Up to 54867 conditions per place. [2024-10-31 22:19:55,243 INFO L140 encePairwiseOnDemand]: 60/97 looper letters, 38 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2024-10-31 22:19:55,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 56 transitions, 202 flow [2024-10-31 22:19:55,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:55,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:19:55,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-10-31 22:19:55,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4742268041237113 [2024-10-31 22:19:55,262 INFO L175 Difference]: Start difference. First operand has 104 places, 93 transitions, 198 flow. Second operand 3 states and 138 transitions. [2024-10-31 22:19:55,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 56 transitions, 202 flow [2024-10-31 22:19:55,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 56 transitions, 198 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:19:55,303 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 122 flow [2024-10-31 22:19:55,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-10-31 22:19:55,312 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -37 predicate places. [2024-10-31 22:19:55,313 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 122 flow [2024-10-31 22:19:55,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:55,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:55,314 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:19:55,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:19:55,315 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:19:55,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:55,316 INFO L85 PathProgramCache]: Analyzing trace with hash 980986845, now seen corresponding path program 1 times [2024-10-31 22:19:55,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:55,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855259987] [2024-10-31 22:19:55,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:55,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:55,577 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 22:19:55,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:55,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855259987] [2024-10-31 22:19:55,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855259987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:55,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:55,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:19:55,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144779286] [2024-10-31 22:19:55,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:55,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:55,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:55,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:55,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:55,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-10-31 22:19:55,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:55,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:55,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-10-31 22:19:55,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:57,814 INFO L124 PetriNetUnfolderBase]: 5844/9113 cut-off events. [2024-10-31 22:19:57,815 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:19:57,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17256 conditions, 9113 events. 5844/9113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 64985 event pairs, 5844 based on Foata normal form. 0/8156 useless extension candidates. Maximal degree in co-relation 17250. Up to 7981 conditions per place. [2024-10-31 22:19:57,871 INFO L140 encePairwiseOnDemand]: 86/97 looper letters, 28 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2024-10-31 22:19:57,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 46 transitions, 160 flow [2024-10-31 22:19:57,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:57,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:19:57,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-10-31 22:19:57,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35051546391752575 [2024-10-31 22:19:57,874 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 122 flow. Second operand 3 states and 102 transitions. [2024-10-31 22:19:57,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 46 transitions, 160 flow [2024-10-31 22:19:57,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 46 transitions, 159 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:19:57,875 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 103 flow [2024-10-31 22:19:57,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2024-10-31 22:19:57,876 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -46 predicate places. [2024-10-31 22:19:57,876 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 103 flow [2024-10-31 22:19:57,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:57,877 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:57,877 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:19:57,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:19:57,878 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:19:57,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:57,879 INFO L85 PathProgramCache]: Analyzing trace with hash 343889124, now seen corresponding path program 1 times [2024-10-31 22:19:57,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:57,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557211888] [2024-10-31 22:19:57,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:57,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:58,082 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 22:19:58,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:58,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557211888] [2024-10-31 22:19:58,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557211888] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:58,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:58,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:19:58,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109624110] [2024-10-31 22:19:58,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:58,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:58,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:58,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:58,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:58,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-10-31 22:19:58,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:58,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:58,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-10-31 22:19:58,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:20:00,159 INFO L124 PetriNetUnfolderBase]: 4591/7092 cut-off events. [2024-10-31 22:20:00,160 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:20:00,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13527 conditions, 7092 events. 4591/7092 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 47575 event pairs, 1360 based on Foata normal form. 0/6756 useless extension candidates. Maximal degree in co-relation 13520. Up to 5038 conditions per place. [2024-10-31 22:20:00,209 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 45 selfloop transitions, 2 changer transitions 2/66 dead transitions. [2024-10-31 22:20:00,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 245 flow [2024-10-31 22:20:00,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:20:00,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:20:00,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-10-31 22:20:00,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38831615120274915 [2024-10-31 22:20:00,211 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 103 flow. Second operand 3 states and 113 transitions. [2024-10-31 22:20:00,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 245 flow [2024-10-31 22:20:00,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:20:00,213 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 102 flow [2024-10-31 22:20:00,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-10-31 22:20:00,214 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -46 predicate places. [2024-10-31 22:20:00,215 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 102 flow [2024-10-31 22:20:00,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:20:00,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:20:00,216 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:20:00,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:20:00,216 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:20:00,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:20:00,217 INFO L85 PathProgramCache]: Analyzing trace with hash -2128680646, now seen corresponding path program 1 times [2024-10-31 22:20:00,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:20:00,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138300949] [2024-10-31 22:20:00,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:20:00,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:20:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:20:00,352 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 22:20:00,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:20:00,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138300949] [2024-10-31 22:20:00,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138300949] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:20:00,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:20:00,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:20:00,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491871784] [2024-10-31 22:20:00,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:20:00,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:20:00,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:20:00,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:20:00,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:20:00,356 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-10-31 22:20:00,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:20:00,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:20:00,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-10-31 22:20:00,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:20:01,700 INFO L124 PetriNetUnfolderBase]: 3961/6222 cut-off events. [2024-10-31 22:20:01,700 INFO L125 PetriNetUnfolderBase]: For 372/372 co-relation queries the response was YES. [2024-10-31 22:20:01,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12184 conditions, 6222 events. 3961/6222 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 41240 event pairs, 1309 based on Foata normal form. 0/5967 useless extension candidates. Maximal degree in co-relation 12176. Up to 4477 conditions per place. [2024-10-31 22:20:01,747 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 41 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-10-31 22:20:01,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 224 flow [2024-10-31 22:20:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:20:01,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:20:01,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-10-31 22:20:01,751 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3711340206185567 [2024-10-31 22:20:01,752 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 102 flow. Second operand 3 states and 108 transitions. [2024-10-31 22:20:01,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 224 flow [2024-10-31 22:20:01,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:20:01,757 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 108 flow [2024-10-31 22:20:01,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-10-31 22:20:01,758 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -46 predicate places. [2024-10-31 22:20:01,760 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 108 flow [2024-10-31 22:20:01,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:20:01,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:20:01,760 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:20:01,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:20:01,761 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:20:01,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:20:01,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1257550359, now seen corresponding path program 1 times [2024-10-31 22:20:01,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:20:01,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213695829] [2024-10-31 22:20:01,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:20:01,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:20:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:20:01,973 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 22:20:01,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:20:01,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213695829] [2024-10-31 22:20:01,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213695829] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:20:01,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:20:01,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:20:01,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866575008] [2024-10-31 22:20:01,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:20:01,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:20:01,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:20:01,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:20:01,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:20:01,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-10-31 22:20:01,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 22:20:01,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:20:01,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-10-31 22:20:01,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:20:03,899 INFO L124 PetriNetUnfolderBase]: 3664/5817 cut-off events. [2024-10-31 22:20:03,899 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2024-10-31 22:20:03,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11735 conditions, 5817 events. 3664/5817 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 38526 event pairs, 1165 based on Foata normal form. 0/5778 useless extension candidates. Maximal degree in co-relation 11726. Up to 4071 conditions per place. [2024-10-31 22:20:03,941 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 40 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-10-31 22:20:03,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 222 flow [2024-10-31 22:20:03,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:20:03,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:20:03,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-10-31 22:20:03,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.327319587628866 [2024-10-31 22:20:03,944 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 108 flow. Second operand 4 states and 127 transitions. [2024-10-31 22:20:03,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 222 flow [2024-10-31 22:20:03,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:20:03,949 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 104 flow [2024-10-31 22:20:03,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2024-10-31 22:20:03,950 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -46 predicate places. [2024-10-31 22:20:03,950 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 104 flow [2024-10-31 22:20:03,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 22:20:03,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:20:03,951 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:20:03,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:20:03,951 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-31 22:20:03,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:20:03,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1257550358, now seen corresponding path program 1 times [2024-10-31 22:20:03,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:20:03,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486073625] [2024-10-31 22:20:03,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:20:03,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:20:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:20:04,376 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 22:20:04,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:20:04,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486073625] [2024-10-31 22:20:04,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486073625] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:20:04,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:20:04,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:20:04,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242013590] [2024-10-31 22:20:04,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:20:04,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:20:04,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:20:04,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:20:04,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:20:04,380 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-10-31 22:20:04,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 22:20:04,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:20:04,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-10-31 22:20:04,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand