./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_f9f92a17-7644-436b-9bbf-8dd33b861f1d/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f92a17-7644-436b-9bbf-8dd33b861f1d/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f92a17-7644-436b-9bbf-8dd33b861f1d/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f92a17-7644-436b-9bbf-8dd33b861f1d/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f92a17-7644-436b-9bbf-8dd33b861f1d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f92a17-7644-436b-9bbf-8dd33b861f1d/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 ef808fc1470b7509ff56eb59d7d443a24f9bd367b94a6fd316176ae1cba1f1f6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:58:29,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:58:29,236 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f92a17-7644-436b-9bbf-8dd33b861f1d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:58:29,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:58:29,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:58:29,288 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:58:29,289 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:58:29,289 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:58:29,290 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:58:29,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:58:29,296 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:58:29,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:58:29,297 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:58:29,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:58:29,300 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:58:29,300 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:58:29,301 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:58:29,301 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:58:29,302 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:58:29,302 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:58:29,303 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:58:29,303 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:58:29,304 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:58:29,304 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:58:29,305 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:58:29,305 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:58:29,307 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:58:29,307 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:58:29,308 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:58:29,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:58:29,310 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:58:29,310 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:58:29,311 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:58:29,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:58:29,311 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:58:29,312 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:58:29,312 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:58:29,312 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:58:29,313 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_f9f92a17-7644-436b-9bbf-8dd33b861f1d/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f92a17-7644-436b-9bbf-8dd33b861f1d/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef808fc1470b7509ff56eb59d7d443a24f9bd367b94a6fd316176ae1cba1f1f6 [2023-11-06 22:58:29,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:58:29,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:58:29,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:58:29,659 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:58:29,660 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:58:29,662 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f92a17-7644-436b-9bbf-8dd33b861f1d/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i [2023-11-06 22:58:32,806 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:58:33,123 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:58:33,124 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f92a17-7644-436b-9bbf-8dd33b861f1d/sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i [2023-11-06 22:58:33,145 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f92a17-7644-436b-9bbf-8dd33b861f1d/bin/uautomizer-verify-WvqO1wxjHP/data/4fba19bf2/8b064947c90346148459fa09bbbcd50a/FLAGed393a018 [2023-11-06 22:58:33,162 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f92a17-7644-436b-9bbf-8dd33b861f1d/bin/uautomizer-verify-WvqO1wxjHP/data/4fba19bf2/8b064947c90346148459fa09bbbcd50a [2023-11-06 22:58:33,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:58:33,167 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:58:33,168 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:58:33,169 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:58:33,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:58:33,176 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:58:33" (1/1) ... [2023-11-06 22:58:33,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@293bc898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33, skipping insertion in model container [2023-11-06 22:58:33,178 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:58:33" (1/1) ... [2023-11-06 22:58:33,232 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:58:33,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:58:33,752 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:58:33,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:58:33,929 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:58:33,929 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:58:33,937 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:58:33,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33 WrapperNode [2023-11-06 22:58:33,937 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:58:33,938 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:58:33,938 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:58:33,938 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:58:33,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (1/1) ... [2023-11-06 22:58:33,967 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (1/1) ... [2023-11-06 22:58:34,005 INFO L138 Inliner]: procedures = 177, calls = 86, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 190 [2023-11-06 22:58:34,006 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:58:34,007 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:58:34,007 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:58:34,008 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:58:34,027 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (1/1) ... [2023-11-06 22:58:34,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (1/1) ... [2023-11-06 22:58:34,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (1/1) ... [2023-11-06 22:58:34,058 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (1/1) ... [2023-11-06 22:58:34,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (1/1) ... [2023-11-06 22:58:34,091 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (1/1) ... [2023-11-06 22:58:34,099 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (1/1) ... [2023-11-06 22:58:34,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (1/1) ... [2023-11-06 22:58:34,109 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:58:34,121 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:58:34,122 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:58:34,122 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:58:34,123 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (1/1) ... [2023-11-06 22:58:34,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:58:34,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f92a17-7644-436b-9bbf-8dd33b861f1d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:34,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f92a17-7644-436b-9bbf-8dd33b861f1d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:58:34,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f92a17-7644-436b-9bbf-8dd33b861f1d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:58:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:58:34,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:58:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:58:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:58:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:58:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:58:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 22:58:34,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 22:58:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 22:58:34,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 22:58:34,222 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 22:58:34,223 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 22:58:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-06 22:58:34,223 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-06 22:58:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:58:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:58:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:58:34,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:58:34,229 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:58:34,490 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:58:34,493 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:58:35,153 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:58:36,130 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:58:36,131 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:58:36,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:36 BoogieIcfgContainer [2023-11-06 22:58:36,135 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:58:36,138 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:58:36,139 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:58:36,142 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:58:36,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:58:33" (1/3) ... [2023-11-06 22:58:36,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219094f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:58:36, skipping insertion in model container [2023-11-06 22:58:36,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (2/3) ... [2023-11-06 22:58:36,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219094f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:58:36, skipping insertion in model container [2023-11-06 22:58:36,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:36" (3/3) ... [2023-11-06 22:58:36,156 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_rmo.oepc.i [2023-11-06 22:58:36,176 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:58:36,177 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 52 error locations. [2023-11-06 22:58:36,177 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:58:36,359 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:58:36,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 204 transitions, 424 flow [2023-11-06 22:58:36,520 INFO L124 PetriNetUnfolderBase]: 3/200 cut-off events. [2023-11-06 22:58:36,520 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:58:36,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 200 events. 3/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 297 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2023-11-06 22:58:36,528 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 204 transitions, 424 flow [2023-11-06 22:58:36,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 200 transitions, 412 flow [2023-11-06 22:58:36,541 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:58:36,552 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 200 transitions, 412 flow [2023-11-06 22:58:36,555 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 200 transitions, 412 flow [2023-11-06 22:58:36,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 200 transitions, 412 flow [2023-11-06 22:58:36,630 INFO L124 PetriNetUnfolderBase]: 3/200 cut-off events. [2023-11-06 22:58:36,630 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:58:36,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 200 events. 3/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 293 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2023-11-06 22:58:36,639 INFO L119 LiptonReduction]: Number of co-enabled transitions 8884 [2023-11-06 22:59:22,614 INFO L134 LiptonReduction]: Checked pairs total: 39442 [2023-11-06 22:59:22,615 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-11-06 22:59:22,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:59:22,643 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;@5ed629d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:59:22,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2023-11-06 22:59:22,647 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:59:22,647 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-06 22:59:22,648 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:59:22,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:59:22,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:59:22,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-06 22:59:22,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:59:22,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1128, now seen corresponding path program 1 times [2023-11-06 22:59:22,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:59:22,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891475451] [2023-11-06 22:59:22,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:59:22,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:59:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:59:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:59:22,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:59:22,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891475451] [2023-11-06 22:59:22,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891475451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:59:22,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:59:22,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:59:22,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521722147] [2023-11-06 22:59:22,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:59:22,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:59:22,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:59:22,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:59:22,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:59:22,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 376 [2023-11-06 22:59:22,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 153.5) internal successors, (307), 2 states have internal predecessors, (307), 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) [2023-11-06 22:59:22,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:59:22,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 376 [2023-11-06 22:59:22,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:59:42,830 INFO L124 PetriNetUnfolderBase]: 73632/96945 cut-off events. [2023-11-06 22:59:42,830 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-06 22:59:43,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194086 conditions, 96945 events. 73632/96945 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 6585. Compared 638124 event pairs, 73632 based on Foata normal form. 1200/50321 useless extension candidates. Maximal degree in co-relation 194074. Up to 96854 conditions per place. [2023-11-06 22:59:43,578 INFO L140 encePairwiseOnDemand]: 347/376 looper letters, 51 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2023-11-06 22:59:43,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 55 transitions, 224 flow [2023-11-06 22:59:43,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:59:43,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:59:43,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 386 transitions. [2023-11-06 22:59:43,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2023-11-06 22:59:43,609 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 386 transitions. [2023-11-06 22:59:43,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 386 transitions. [2023-11-06 22:59:43,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:59:43,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 386 transitions. [2023-11-06 22:59:43,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 193.0) internal successors, (386), 2 states have internal predecessors, (386), 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) [2023-11-06 22:59:43,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 376.0) internal successors, (1128), 3 states have internal predecessors, (1128), 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) [2023-11-06 22:59:43,635 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 376.0) internal successors, (1128), 3 states have internal predecessors, (1128), 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) [2023-11-06 22:59:43,637 INFO L175 Difference]: Start difference. First operand has 96 places, 84 transitions, 180 flow. Second operand 2 states and 386 transitions. [2023-11-06 22:59:43,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 55 transitions, 224 flow [2023-11-06 22:59:43,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 55 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:59:43,658 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 118 flow [2023-11-06 22:59:43,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2023-11-06 22:59:43,667 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -31 predicate places. [2023-11-06 22:59:43,668 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 118 flow [2023-11-06 22:59:43,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 153.5) internal successors, (307), 2 states have internal predecessors, (307), 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) [2023-11-06 22:59:43,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:59:43,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:59:43,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:59:43,670 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-06 22:59:43,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:59:43,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1114571, now seen corresponding path program 1 times [2023-11-06 22:59:43,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:59:43,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700230454] [2023-11-06 22:59:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:59:43,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:59:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:59:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:59:44,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:59:44,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700230454] [2023-11-06 22:59:44,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700230454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:59:44,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:59:44,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:59:44,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470006248] [2023-11-06 22:59:44,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:59:44,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:59:44,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:59:44,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:59:44,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:59:44,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 376 [2023-11-06 22:59:44,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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) [2023-11-06 22:59:44,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:59:44,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 376 [2023-11-06 22:59:44,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:59:51,224 INFO L124 PetriNetUnfolderBase]: 25099/33478 cut-off events. [2023-11-06 22:59:51,224 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:59:51,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67087 conditions, 33478 events. 25099/33478 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1961. Compared 196837 event pairs, 25099 based on Foata normal form. 1380/22491 useless extension candidates. Maximal degree in co-relation 67084. Up to 33428 conditions per place. [2023-11-06 22:59:51,444 INFO L140 encePairwiseOnDemand]: 365/376 looper letters, 41 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-11-06 22:59:51,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 45 transitions, 182 flow [2023-11-06 22:59:51,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:59:51,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:59:51,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-11-06 22:59:51,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4450354609929078 [2023-11-06 22:59:51,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-11-06 22:59:51,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-11-06 22:59:51,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:59:51,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-11-06 22:59:51,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 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) [2023-11-06 22:59:51,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 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) [2023-11-06 22:59:51,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 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) [2023-11-06 22:59:51,468 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 118 flow. Second operand 3 states and 502 transitions. [2023-11-06 22:59:51,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 45 transitions, 182 flow [2023-11-06 22:59:51,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 45 transitions, 182 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:59:51,472 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 100 flow [2023-11-06 22:59:51,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2023-11-06 22:59:51,474 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -39 predicate places. [2023-11-06 22:59:51,475 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 100 flow [2023-11-06 22:59:51,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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) [2023-11-06 22:59:51,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:59:51,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:59:51,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:59:51,486 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-06 22:59:51,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:59:51,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1114570, now seen corresponding path program 1 times [2023-11-06 22:59:51,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:59:51,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27655884] [2023-11-06 22:59:51,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:59:51,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:59:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:59:51,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:59:51,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:59:51,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27655884] [2023-11-06 22:59:51,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27655884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:59:51,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:59:51,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:59:51,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154319199] [2023-11-06 22:59:51,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:59:51,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:59:51,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:59:51,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:59:51,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:59:51,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 376 [2023-11-06 22:59:51,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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) [2023-11-06 22:59:51,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:59:51,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 376 [2023-11-06 22:59:51,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:59:55,838 INFO L124 PetriNetUnfolderBase]: 19789/27823 cut-off events. [2023-11-06 22:59:55,838 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:59:55,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55465 conditions, 27823 events. 19789/27823 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1470. Compared 171026 event pairs, 11111 based on Foata normal form. 0/22338 useless extension candidates. Maximal degree in co-relation 55461. Up to 14505 conditions per place. [2023-11-06 22:59:56,000 INFO L140 encePairwiseOnDemand]: 355/376 looper letters, 44 selfloop transitions, 11 changer transitions 1/57 dead transitions. [2023-11-06 22:59:56,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 57 transitions, 236 flow [2023-11-06 22:59:56,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:59:56,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:59:56,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-11-06 22:59:56,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44148936170212766 [2023-11-06 22:59:56,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-11-06 22:59:56,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-11-06 22:59:56,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:59:56,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-11-06 22:59:56,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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) [2023-11-06 22:59:56,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 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) [2023-11-06 22:59:56,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 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) [2023-11-06 22:59:56,020 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 100 flow. Second operand 3 states and 498 transitions. [2023-11-06 22:59:56,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 57 transitions, 236 flow [2023-11-06 22:59:56,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:59:56,025 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 185 flow [2023-11-06 22:59:56,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2023-11-06 22:59:56,027 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -39 predicate places. [2023-11-06 22:59:56,027 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 185 flow [2023-11-06 22:59:56,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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) [2023-11-06 22:59:56,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:59:56,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:59:56,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:59:56,030 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-06 22:59:56,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:59:56,031 INFO L85 PathProgramCache]: Analyzing trace with hash 721038124, now seen corresponding path program 1 times [2023-11-06 22:59:56,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:59:56,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286528297] [2023-11-06 22:59:56,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:59:56,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:59:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:59:56,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:59:56,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:59:56,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286528297] [2023-11-06 22:59:56,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286528297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:59:56,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:59:56,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:59:56,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598161942] [2023-11-06 22:59:56,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:59:56,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:59:56,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:59:56,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:59:56,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:59:56,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 376 [2023-11-06 22:59:56,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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) [2023-11-06 22:59:56,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:59:56,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 376 [2023-11-06 22:59:56,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand