./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9e5d72-9da7-49a6-95f6-0c8a2ba931c2/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9e5d72-9da7-49a6-95f6-0c8a2ba931c2/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9e5d72-9da7-49a6-95f6-0c8a2ba931c2/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9e5d72-9da7-49a6-95f6-0c8a2ba931c2/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9e5d72-9da7-49a6-95f6-0c8a2ba931c2/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9e5d72-9da7-49a6-95f6-0c8a2ba931c2/bin/uautomizer-verify-uCwYo4JHxu --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 67d3e2c6779f32015be5c9fe966e6a739e1c762dcde7f287ad383839eb490e84 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:43:10,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:43:10,677 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9e5d72-9da7-49a6-95f6-0c8a2ba931c2/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:43:10,685 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:43:10,686 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:43:10,731 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:43:10,732 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:43:10,733 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:43:10,734 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:43:10,739 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:43:10,740 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:43:10,741 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:43:10,741 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:43:10,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:43:10,744 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:43:10,744 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:43:10,744 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:43:10,745 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:43:10,745 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:43:10,746 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:43:10,746 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:43:10,747 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:43:10,747 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:43:10,748 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:43:10,748 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:43:10,748 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:43:10,749 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:43:10,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:43:10,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:43:10,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:10,752 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:43:10,752 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:43:10,752 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:43:10,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:43:10,753 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:43:10,753 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:43:10,753 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:43:10,754 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:43:10,754 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_5c9e5d72-9da7-49a6-95f6-0c8a2ba931c2/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9e5d72-9da7-49a6-95f6-0c8a2ba931c2/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67d3e2c6779f32015be5c9fe966e6a739e1c762dcde7f287ad383839eb490e84 [2023-11-19 07:43:11,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:43:11,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:43:11,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:43:11,109 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:43:11,110 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:43:11,111 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9e5d72-9da7-49a6-95f6-0c8a2ba931c2/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i [2023-11-19 07:43:14,412 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:43:14,847 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:43:14,848 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9e5d72-9da7-49a6-95f6-0c8a2ba931c2/sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i [2023-11-19 07:43:14,878 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9e5d72-9da7-49a6-95f6-0c8a2ba931c2/bin/uautomizer-verify-uCwYo4JHxu/data/a4fa41039/59eefd7a15b94e689aac29f56cea2452/FLAG7b32cbe64 [2023-11-19 07:43:14,900 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9e5d72-9da7-49a6-95f6-0c8a2ba931c2/bin/uautomizer-verify-uCwYo4JHxu/data/a4fa41039/59eefd7a15b94e689aac29f56cea2452 [2023-11-19 07:43:14,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:43:14,909 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:43:14,913 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:14,913 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:43:14,919 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:43:14,921 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:14" (1/1) ... [2023-11-19 07:43:14,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a50052e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:14, skipping insertion in model container [2023-11-19 07:43:14,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:14" (1/1) ... [2023-11-19 07:43:14,995 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:43:15,463 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:15,480 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:43:15,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:15,596 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:15,597 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:15,605 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:43:15,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15 WrapperNode [2023-11-19 07:43:15,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:15,608 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:15,608 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:43:15,609 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:43:15,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,658 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,715 INFO L138 Inliner]: procedures = 176, calls = 85, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 175 [2023-11-19 07:43:15,715 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:15,716 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:43:15,716 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:43:15,716 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:43:15,726 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,749 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,763 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,782 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,799 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,805 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:43:15,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:43:15,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:43:15,815 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:43:15,816 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (1/1) ... [2023-11-19 07:43:15,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:15,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9e5d72-9da7-49a6-95f6-0c8a2ba931c2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:15,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9e5d72-9da7-49a6-95f6-0c8a2ba931c2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:43:15,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9e5d72-9da7-49a6-95f6-0c8a2ba931c2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:43:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:43:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:43:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:43:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:43:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:43:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:43:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:43:15,926 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:43:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:43:15,926 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:43:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:43:15,927 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:43:15,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:43:15,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:43:15,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:43:15,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:43:15,929 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:43:16,097 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:43:16,099 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:43:16,938 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:43:18,103 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:43:18,104 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:43:18,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:18 BoogieIcfgContainer [2023-11-19 07:43:18,114 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:43:18,118 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:43:18,118 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:43:18,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:43:18,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:43:14" (1/3) ... [2023-11-19 07:43:18,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5e5931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:18, skipping insertion in model container [2023-11-19 07:43:18,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:15" (2/3) ... [2023-11-19 07:43:18,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5e5931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:18, skipping insertion in model container [2023-11-19 07:43:18,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:18" (3/3) ... [2023-11-19 07:43:18,127 INFO L112 eAbstractionObserver]: Analyzing ICFG safe001_power.oepc.i [2023-11-19 07:43:18,149 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:43:18,150 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 66 error locations. [2023-11-19 07:43:18,150 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:43:18,499 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:43:18,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 280 transitions, 572 flow [2023-11-19 07:43:18,752 INFO L124 PetriNetUnfolderBase]: 82/277 cut-off events. [2023-11-19 07:43:18,752 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:18,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 277 events. 82/277 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 479 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 221. Up to 12 conditions per place. [2023-11-19 07:43:18,768 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 280 transitions, 572 flow [2023-11-19 07:43:18,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 277 transitions, 563 flow [2023-11-19 07:43:18,793 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:43:18,803 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 277 transitions, 563 flow [2023-11-19 07:43:18,806 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 277 transitions, 563 flow [2023-11-19 07:43:18,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 277 transitions, 563 flow [2023-11-19 07:43:18,897 INFO L124 PetriNetUnfolderBase]: 82/277 cut-off events. [2023-11-19 07:43:18,897 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:18,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 277 events. 82/277 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 485 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 221. Up to 12 conditions per place. [2023-11-19 07:43:18,923 INFO L119 LiptonReduction]: Number of co-enabled transitions 30814 [2023-11-19 07:43:48,230 INFO L134 LiptonReduction]: Checked pairs total: 81576 [2023-11-19 07:43:48,231 INFO L136 LiptonReduction]: Total number of compositions: 320 [2023-11-19 07:43:48,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:43:48,254 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;@2a9537e4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:43:48,254 INFO L358 AbstractCegarLoop]: Starting to check reachability of 109 error locations. [2023-11-19 07:43:48,257 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:43:48,257 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 07:43:48,257 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:48,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:48,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:43:48,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-19 07:43:48,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:48,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 1 times [2023-11-19 07:43:48,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:48,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642550868] [2023-11-19 07:43:48,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:48,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:48,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:48,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:48,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642550868] [2023-11-19 07:43:48,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642550868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:48,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:48,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:43:48,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429200103] [2023-11-19 07:43:48,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:48,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:43:48,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:48,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:43:48,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:43:48,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 600 [2023-11-19 07:43:48,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 95 transitions, 199 flow. Second operand has 2 states, 2 states have (on average 128.5) internal successors, (257), 2 states have internal predecessors, (257), 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) [2023-11-19 07:43:48,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:48,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 600 [2023-11-19 07:43:48,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:57,497 INFO L124 PetriNetUnfolderBase]: 29096/40499 cut-off events. [2023-11-19 07:43:57,497 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-19 07:43:57,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81123 conditions, 40499 events. 29096/40499 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 2331. Compared 257347 event pairs, 29096 based on Foata normal form. 0/16583 useless extension candidates. Maximal degree in co-relation 81112. Up to 40498 conditions per place. [2023-11-19 07:43:57,792 INFO L140 encePairwiseOnDemand]: 556/600 looper letters, 49 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2023-11-19 07:43:57,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 50 transitions, 207 flow [2023-11-19 07:43:57,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:43:57,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:43:57,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 349 transitions. [2023-11-19 07:43:57,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29083333333333333 [2023-11-19 07:43:57,819 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 349 transitions. [2023-11-19 07:43:57,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 349 transitions. [2023-11-19 07:43:57,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:57,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 349 transitions. [2023-11-19 07:43:57,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 174.5) internal successors, (349), 2 states have internal predecessors, (349), 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) [2023-11-19 07:43:57,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 600.0) internal successors, (1800), 3 states have internal predecessors, (1800), 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) [2023-11-19 07:43:57,844 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 600.0) internal successors, (1800), 3 states have internal predecessors, (1800), 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) [2023-11-19 07:43:57,846 INFO L175 Difference]: Start difference. First operand has 102 places, 95 transitions, 199 flow. Second operand 2 states and 349 transitions. [2023-11-19 07:43:57,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 50 transitions, 207 flow [2023-11-19 07:43:57,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 50 transitions, 204 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:43:57,858 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 106 flow [2023-11-19 07:43:57,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=106, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2023-11-19 07:43:57,865 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -44 predicate places. [2023-11-19 07:43:57,865 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 106 flow [2023-11-19 07:43:57,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 128.5) internal successors, (257), 2 states have internal predecessors, (257), 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) [2023-11-19 07:43:57,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:57,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:43:57,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:43:57,867 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-19 07:43:57,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:57,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1708607, now seen corresponding path program 1 times [2023-11-19 07:43:57,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:57,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116561707] [2023-11-19 07:43:57,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:57,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:58,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:58,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:58,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116561707] [2023-11-19 07:43:58,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116561707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:58,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:58,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:43:58,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176785631] [2023-11-19 07:43:58,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:58,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:58,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:58,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:58,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:58,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 600 [2023-11-19 07:43:58,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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) [2023-11-19 07:43:58,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:58,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 600 [2023-11-19 07:43:58,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:01,416 INFO L124 PetriNetUnfolderBase]: 10014/14157 cut-off events. [2023-11-19 07:44:01,416 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:01,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28389 conditions, 14157 events. 10014/14157 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 80579 event pairs, 10014 based on Foata normal form. 0/7765 useless extension candidates. Maximal degree in co-relation 28386. Up to 14155 conditions per place. [2023-11-19 07:44:01,525 INFO L140 encePairwiseOnDemand]: 589/600 looper letters, 38 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-11-19 07:44:01,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 164 flow [2023-11-19 07:44:01,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:01,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:01,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 430 transitions. [2023-11-19 07:44:01,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2388888888888889 [2023-11-19 07:44:01,535 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 430 transitions. [2023-11-19 07:44:01,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 430 transitions. [2023-11-19 07:44:01,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:01,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 430 transitions. [2023-11-19 07:44:01,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 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) [2023-11-19 07:44:01,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 600.0) internal successors, (2400), 4 states have internal predecessors, (2400), 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) [2023-11-19 07:44:01,552 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 600.0) internal successors, (2400), 4 states have internal predecessors, (2400), 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) [2023-11-19 07:44:01,555 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 106 flow. Second operand 3 states and 430 transitions. [2023-11-19 07:44:01,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 164 flow [2023-11-19 07:44:01,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 40 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:44:01,558 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 88 flow [2023-11-19 07:44:01,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-11-19 07:44:01,563 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -52 predicate places. [2023-11-19 07:44:01,564 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 88 flow [2023-11-19 07:44:01,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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) [2023-11-19 07:44:01,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:01,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:44:01,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:44:01,574 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2023-11-19 07:44:01,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:01,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1708606, now seen corresponding path program 1 times [2023-11-19 07:44:01,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:01,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745511609] [2023-11-19 07:44:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:01,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:01,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:01,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745511609] [2023-11-19 07:44:01,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745511609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:01,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:01,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:44:01,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032249565] [2023-11-19 07:44:01,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:01,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:01,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:01,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:01,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:01,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 600 [2023-11-19 07:44:01,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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) [2023-11-19 07:44:01,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:01,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 600 [2023-11-19 07:44:01,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand