./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix023_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 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_495032be-2aa5-462b-9378-c52761655617/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495032be-2aa5-462b-9378-c52761655617/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495032be-2aa5-462b-9378-c52761655617/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495032be-2aa5-462b-9378-c52761655617/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix023_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495032be-2aa5-462b-9378-c52761655617/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495032be-2aa5-462b-9378-c52761655617/bin/uautomizer-verify-uTZkv6EMXl --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 19245e5542f28ce8a07a1858e0d4c05190b543a3d82e804c6a4eebc044c13d81 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:18:21,451 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:18:21,591 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495032be-2aa5-462b-9378-c52761655617/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:18:21,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:18:21,601 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:18:21,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:18:21,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:18:21,645 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:18:21,646 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:18:21,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:18:21,654 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:18:21,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:18:21,655 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:18:21,657 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:18:21,658 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:18:21,658 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:18:21,659 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:18:21,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:18:21,660 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:18:21,660 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:18:21,660 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:18:21,661 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:18:21,662 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:18:21,662 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:18:21,662 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:18:21,663 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:18:21,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:18:21,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:18:21,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:18:21,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:21,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:18:21,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:18:21,667 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:18:21,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:18:21,668 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:18:21,668 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:18:21,668 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:18:21,668 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:18:21,669 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_495032be-2aa5-462b-9378-c52761655617/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495032be-2aa5-462b-9378-c52761655617/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19245e5542f28ce8a07a1858e0d4c05190b543a3d82e804c6a4eebc044c13d81 [2023-11-12 02:18:22,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:18:22,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:18:22,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:18:22,059 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:18:22,060 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:18:22,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495032be-2aa5-462b-9378-c52761655617/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/mix023_tso.i [2023-11-12 02:18:25,175 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:18:25,547 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:18:25,550 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495032be-2aa5-462b-9378-c52761655617/sv-benchmarks/c/pthread-wmm/mix023_tso.i [2023-11-12 02:18:25,577 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495032be-2aa5-462b-9378-c52761655617/bin/uautomizer-verify-uTZkv6EMXl/data/0e535d1ac/8ce683f774fd462186299be7903d4879/FLAGf75e43046 [2023-11-12 02:18:25,600 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495032be-2aa5-462b-9378-c52761655617/bin/uautomizer-verify-uTZkv6EMXl/data/0e535d1ac/8ce683f774fd462186299be7903d4879 [2023-11-12 02:18:25,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:18:25,608 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:18:25,611 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:25,612 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:18:25,617 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:18:25,618 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:25" (1/1) ... [2023-11-12 02:18:25,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ca62ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:25, skipping insertion in model container [2023-11-12 02:18:25,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:25" (1/1) ... [2023-11-12 02:18:25,699 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:18:26,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:26,218 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:18:26,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:26,372 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:18:26,373 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:18:26,417 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:18:26,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:26 WrapperNode [2023-11-12 02:18:26,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:26,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:26,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:18:26,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:18:26,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:26" (1/1) ... [2023-11-12 02:18:26,513 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:26" (1/1) ... [2023-11-12 02:18:26,569 INFO L138 Inliner]: procedures = 177, calls = 73, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 290 [2023-11-12 02:18:26,571 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:26,572 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:18:26,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:18:26,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:18:26,585 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:26" (1/1) ... [2023-11-12 02:18:26,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:26" (1/1) ... [2023-11-12 02:18:26,604 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:26" (1/1) ... [2023-11-12 02:18:26,608 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:26" (1/1) ... [2023-11-12 02:18:26,642 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:26" (1/1) ... [2023-11-12 02:18:26,644 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:26" (1/1) ... [2023-11-12 02:18:26,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:26" (1/1) ... [2023-11-12 02:18:26,651 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:26" (1/1) ... [2023-11-12 02:18:26,670 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:18:26,671 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:18:26,672 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:18:26,672 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:18:26,673 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:26" (1/1) ... [2023-11-12 02:18:26,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:26,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495032be-2aa5-462b-9378-c52761655617/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:26,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495032be-2aa5-462b-9378-c52761655617/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:18:26,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495032be-2aa5-462b-9378-c52761655617/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:18:26,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:18:26,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:18:26,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:18:26,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:18:26,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:18:26,764 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:18:26,764 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:18:26,764 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:18:26,764 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:18:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:18:26,765 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:18:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-12 02:18:26,765 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-12 02:18:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:18:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:18:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:18:26,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:18:26,768 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:18:26,948 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:18:26,951 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:18:27,623 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:18:28,009 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:18:28,009 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:18:28,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:28 BoogieIcfgContainer [2023-11-12 02:18:28,013 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:18:28,016 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:18:28,017 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:18:28,020 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:18:28,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:18:25" (1/3) ... [2023-11-12 02:18:28,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea8799d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:28, skipping insertion in model container [2023-11-12 02:18:28,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:26" (2/3) ... [2023-11-12 02:18:28,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea8799d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:28, skipping insertion in model container [2023-11-12 02:18:28,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:28" (3/3) ... [2023-11-12 02:18:28,026 INFO L112 eAbstractionObserver]: Analyzing ICFG mix023_tso.i [2023-11-12 02:18:28,046 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:18:28,047 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-12 02:18:28,047 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:18:28,140 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:18:28,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 171 transitions, 358 flow [2023-11-12 02:18:28,323 INFO L124 PetriNetUnfolderBase]: 3/167 cut-off events. [2023-11-12 02:18:28,323 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:28,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 167 events. 3/167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 127 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-12 02:18:28,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 171 transitions, 358 flow [2023-11-12 02:18:28,345 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 167 transitions, 346 flow [2023-11-12 02:18:28,350 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:18:28,364 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 167 transitions, 346 flow [2023-11-12 02:18:28,367 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 167 transitions, 346 flow [2023-11-12 02:18:28,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 167 transitions, 346 flow [2023-11-12 02:18:28,441 INFO L124 PetriNetUnfolderBase]: 3/167 cut-off events. [2023-11-12 02:18:28,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:28,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 167 events. 3/167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 128 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-12 02:18:28,448 INFO L119 LiptonReduction]: Number of co-enabled transitions 4344 [2023-11-12 02:18:44,838 INFO L134 LiptonReduction]: Checked pairs total: 13356 [2023-11-12 02:18:44,839 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-11-12 02:18:44,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:18:44,863 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@76b2376a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:18:44,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-12 02:18:44,865 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:18:44,865 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:18:44,866 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:44,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:44,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:18:44,867 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:18:44,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:44,873 INFO L85 PathProgramCache]: Analyzing trace with hash 908, now seen corresponding path program 1 times [2023-11-12 02:18:44,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:44,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827310482] [2023-11-12 02:18:44,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:44,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:45,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:45,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:45,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827310482] [2023-11-12 02:18:45,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827310482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:45,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:45,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:18:45,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670179110] [2023-11-12 02:18:45,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:45,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:18:45,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:45,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:18:45,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:18:45,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 334 [2023-11-12 02:18:45,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 151.5) internal successors, (303), 2 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:45,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:45,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 334 [2023-11-12 02:18:45,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:49,992 INFO L124 PetriNetUnfolderBase]: 10899/14824 cut-off events. [2023-11-12 02:18:49,993 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-11-12 02:18:50,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29684 conditions, 14824 events. 10899/14824 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 79488 event pairs, 10899 based on Foata normal form. 0/12358 useless extension candidates. Maximal degree in co-relation 29672. Up to 14605 conditions per place. [2023-11-12 02:18:50,138 INFO L140 encePairwiseOnDemand]: 326/334 looper letters, 29 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2023-11-12 02:18:50,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 33 transitions, 136 flow [2023-11-12 02:18:50,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:18:50,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:18:50,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 339 transitions. [2023-11-12 02:18:50,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5074850299401198 [2023-11-12 02:18:50,169 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 339 transitions. [2023-11-12 02:18:50,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 339 transitions. [2023-11-12 02:18:50,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:50,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 339 transitions. [2023-11-12 02:18:50,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 169.5) internal successors, (339), 2 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:50,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 334.0) internal successors, (1002), 3 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:50,207 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 334.0) internal successors, (1002), 3 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:50,209 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 94 flow. Second operand 2 states and 339 transitions. [2023-11-12 02:18:50,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 33 transitions, 136 flow [2023-11-12 02:18:50,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 33 transitions, 132 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:18:50,229 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 74 flow [2023-11-12 02:18:50,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2023-11-12 02:18:50,237 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-11-12 02:18:50,237 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 74 flow [2023-11-12 02:18:50,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 151.5) internal successors, (303), 2 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:50,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:50,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:18:50,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:18:50,239 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:18:50,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:50,250 INFO L85 PathProgramCache]: Analyzing trace with hash 861640028, now seen corresponding path program 1 times [2023-11-12 02:18:50,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:50,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704774831] [2023-11-12 02:18:50,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:50,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:50,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:50,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:50,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704774831] [2023-11-12 02:18:50,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704774831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:50,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:50,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:18:50,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999403116] [2023-11-12 02:18:50,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:50,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:50,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:50,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:50,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:50,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 334 [2023-11-12 02:18:50,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:50,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:50,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 334 [2023-11-12 02:18:50,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:54,616 INFO L124 PetriNetUnfolderBase]: 8981/12724 cut-off events. [2023-11-12 02:18:54,617 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:54,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25007 conditions, 12724 events. 8981/12724 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 76702 event pairs, 1309 based on Foata normal form. 0/11263 useless extension candidates. Maximal degree in co-relation 25004. Up to 10137 conditions per place. [2023-11-12 02:18:54,687 INFO L140 encePairwiseOnDemand]: 331/334 looper letters, 46 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-11-12 02:18:54,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 212 flow [2023-11-12 02:18:54,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:54,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:54,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-11-12 02:18:54,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49800399201596807 [2023-11-12 02:18:54,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-11-12 02:18:54,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-11-12 02:18:54,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:54,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-11-12 02:18:54,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:54,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:54,699 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:54,699 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 74 flow. Second operand 3 states and 499 transitions. [2023-11-12 02:18:54,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 212 flow [2023-11-12 02:18:54,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 212 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:18:54,701 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 76 flow [2023-11-12 02:18:54,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-11-12 02:18:54,703 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2023-11-12 02:18:54,703 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 76 flow [2023-11-12 02:18:54,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:54,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:54,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:54,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:18:54,705 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P3Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:18:54,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:54,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1308966060, now seen corresponding path program 1 times [2023-11-12 02:18:54,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:54,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996638758] [2023-11-12 02:18:54,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:54,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:54,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:54,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996638758] [2023-11-12 02:18:54,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996638758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:54,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:54,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:18:54,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350616356] [2023-11-12 02:18:54,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:54,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:54,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:54,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:54,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:54,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 334 [2023-11-12 02:18:54,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:54,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:54,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 334 [2023-11-12 02:18:54,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:57,627 INFO L124 PetriNetUnfolderBase]: 7477/10590 cut-off events. [2023-11-12 02:18:57,627 INFO L125 PetriNetUnfolderBase]: For 517/517 co-relation queries the response was YES. [2023-11-12 02:18:57,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21411 conditions, 10590 events. 7477/10590 cut-off events. For 517/517 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 60009 event pairs, 1461 based on Foata normal form. 0/9768 useless extension candidates. Maximal degree in co-relation 21407. Up to 7937 conditions per place. [2023-11-12 02:18:57,677 INFO L140 encePairwiseOnDemand]: 331/334 looper letters, 38 selfloop transitions, 2 changer transitions 2/46 dead transitions. [2023-11-12 02:18:57,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 46 transitions, 190 flow [2023-11-12 02:18:57,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:57,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:57,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2023-11-12 02:18:57,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49201596806387227 [2023-11-12 02:18:57,680 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 493 transitions. [2023-11-12 02:18:57,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 493 transitions. [2023-11-12 02:18:57,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:57,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 493 transitions. [2023-11-12 02:18:57,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:57,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:57,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:57,688 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 76 flow. Second operand 3 states and 493 transitions. [2023-11-12 02:18:57,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 46 transitions, 190 flow [2023-11-12 02:18:57,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:57,690 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 72 flow [2023-11-12 02:18:57,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=334, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2023-11-12 02:18:57,691 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-11-12 02:18:57,692 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 72 flow [2023-11-12 02:18:57,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:57,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:57,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:57,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:18:57,693 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:18:57,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:57,694 INFO L85 PathProgramCache]: Analyzing trace with hash -508922296, now seen corresponding path program 1 times [2023-11-12 02:18:57,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:57,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050312482] [2023-11-12 02:18:57,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:57,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat