./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_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_24dbc77e-9279-4459-8e7a-75aa2db88a62/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24dbc77e-9279-4459-8e7a-75aa2db88a62/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_24dbc77e-9279-4459-8e7a-75aa2db88a62/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24dbc77e-9279-4459-8e7a-75aa2db88a62/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24dbc77e-9279-4459-8e7a-75aa2db88a62/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_24dbc77e-9279-4459-8e7a-75aa2db88a62/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 a45428c1422efa85fd947d764edf0847add56b17c38e18f54072b18b642fedaf --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:45:33,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:45:33,755 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24dbc77e-9279-4459-8e7a-75aa2db88a62/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:45:33,760 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:45:33,760 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:45:33,813 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:45:33,815 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:45:33,816 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:45:33,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:45:33,822 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:45:33,824 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:45:33,824 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:45:33,825 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:45:33,827 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:45:33,827 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:45:33,828 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:45:33,828 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:45:33,829 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:45:33,829 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:45:33,829 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:45:33,830 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:45:33,831 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:45:33,831 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:45:33,831 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:45:33,832 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:45:33,849 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:45:33,850 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:45:33,850 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:45:33,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:45:33,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:33,852 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:45:33,853 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:45:33,853 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:45:33,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:45:33,853 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:45:33,853 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:45:33,854 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:45:33,854 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:45:33,854 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_24dbc77e-9279-4459-8e7a-75aa2db88a62/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24dbc77e-9279-4459-8e7a-75aa2db88a62/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a45428c1422efa85fd947d764edf0847add56b17c38e18f54072b18b642fedaf [2023-11-19 07:45:34,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:45:34,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:45:34,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:45:34,194 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:45:34,194 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:45:34,196 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24dbc77e-9279-4459-8e7a-75aa2db88a62/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i [2023-11-19 07:45:37,368 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:45:37,672 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:45:37,672 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24dbc77e-9279-4459-8e7a-75aa2db88a62/sv-benchmarks/c/pthread-wmm/safe016_power.oepc.i [2023-11-19 07:45:37,692 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24dbc77e-9279-4459-8e7a-75aa2db88a62/bin/uautomizer-verify-uCwYo4JHxu/data/ceb10eba0/af30e221676948c6a07dbd912abb32d4/FLAG7c670e2a8 [2023-11-19 07:45:37,708 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24dbc77e-9279-4459-8e7a-75aa2db88a62/bin/uautomizer-verify-uCwYo4JHxu/data/ceb10eba0/af30e221676948c6a07dbd912abb32d4 [2023-11-19 07:45:37,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:45:37,713 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:45:37,715 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:37,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:45:37,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:45:37,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:37" (1/1) ... [2023-11-19 07:45:37,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@519a0715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:37, skipping insertion in model container [2023-11-19 07:45:37,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:37" (1/1) ... [2023-11-19 07:45:37,779 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:45:38,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:38,328 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:45:38,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:38,434 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:45:38,434 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:45:38,442 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:45:38,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:38 WrapperNode [2023-11-19 07:45:38,443 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:38,444 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:38,445 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:45:38,445 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:45:38,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:38" (1/1) ... [2023-11-19 07:45:38,473 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:38" (1/1) ... [2023-11-19 07:45:38,508 INFO L138 Inliner]: procedures = 177, calls = 88, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 190 [2023-11-19 07:45:38,508 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:38,509 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:45:38,509 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:45:38,510 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:45:38,520 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:38" (1/1) ... [2023-11-19 07:45:38,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:38" (1/1) ... [2023-11-19 07:45:38,525 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:38" (1/1) ... [2023-11-19 07:45:38,526 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:38" (1/1) ... [2023-11-19 07:45:38,539 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:38" (1/1) ... [2023-11-19 07:45:38,542 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:38" (1/1) ... [2023-11-19 07:45:38,546 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:38" (1/1) ... [2023-11-19 07:45:38,549 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:38" (1/1) ... [2023-11-19 07:45:38,555 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:45:38,557 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:45:38,557 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:45:38,557 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:45:38,558 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:38" (1/1) ... [2023-11-19 07:45:38,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:38,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24dbc77e-9279-4459-8e7a-75aa2db88a62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:38,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24dbc77e-9279-4459-8e7a-75aa2db88a62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:45:38,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24dbc77e-9279-4459-8e7a-75aa2db88a62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:45:38,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:45:38,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:45:38,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:45:38,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:45:38,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:45:38,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:45:38,673 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:45:38,673 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:45:38,673 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:45:38,673 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:45:38,674 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:45:38,674 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:45:38,674 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:45:38,674 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:45:38,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:45:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:45:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:45:38,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:45:38,678 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 07:45:39,002 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:45:39,007 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:45:39,756 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:45:40,631 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:45:40,632 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:45:40,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:40 BoogieIcfgContainer [2023-11-19 07:45:40,640 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:45:40,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:45:40,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:45:40,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:45:40,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:37" (1/3) ... [2023-11-19 07:45:40,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a22d240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:40, skipping insertion in model container [2023-11-19 07:45:40,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:38" (2/3) ... [2023-11-19 07:45:40,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a22d240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:40, skipping insertion in model container [2023-11-19 07:45:40,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:40" (3/3) ... [2023-11-19 07:45:40,653 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_power.oepc.i [2023-11-19 07:45:40,673 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:45:40,674 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2023-11-19 07:45:40,674 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:45:40,947 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:45:40,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 248 transitions, 512 flow [2023-11-19 07:45:41,171 INFO L124 PetriNetUnfolderBase]: 41/244 cut-off events. [2023-11-19 07:45:41,171 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:41,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 244 events. 41/244 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 383 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2023-11-19 07:45:41,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 248 transitions, 512 flow [2023-11-19 07:45:41,200 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 244 transitions, 500 flow [2023-11-19 07:45:41,204 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:45:41,214 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 216 places, 244 transitions, 500 flow [2023-11-19 07:45:41,217 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 216 places, 244 transitions, 500 flow [2023-11-19 07:45:41,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 244 transitions, 500 flow [2023-11-19 07:45:41,331 INFO L124 PetriNetUnfolderBase]: 41/244 cut-off events. [2023-11-19 07:45:41,331 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:41,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 244 events. 41/244 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 378 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2023-11-19 07:45:41,350 INFO L119 LiptonReduction]: Number of co-enabled transitions 18304 [2023-11-19 07:46:17,747 INFO L134 LiptonReduction]: Checked pairs total: 49929 [2023-11-19 07:46:17,748 INFO L136 LiptonReduction]: Total number of compositions: 238 [2023-11-19 07:46:17,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:46:17,772 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;@5e6b1ede, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:46:17,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 88 error locations. [2023-11-19 07:46:17,775 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:46:17,775 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 07:46:17,775 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:17,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:17,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:46:17,777 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2023-11-19 07:46:17,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:17,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2023-11-19 07:46:17,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:17,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033147740] [2023-11-19 07:46:17,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:17,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:17,966 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 07:46:17,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:17,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033147740] [2023-11-19 07:46:17,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033147740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:17,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:17,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:46:17,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100684414] [2023-11-19 07:46:17,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:17,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:46:17,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:18,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:46:18,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:46:18,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 486 [2023-11-19 07:46:18,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 88 transitions, 188 flow. Second operand has 2 states, 2 states have (on average 149.5) internal successors, (299), 2 states have internal predecessors, (299), 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 07:46:18,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:18,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 486 [2023-11-19 07:46:18,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand