./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 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_22c36982-2803-48fd-9a15-2b0f2798302b/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c36982-2803-48fd-9a15-2b0f2798302b/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_22c36982-2803-48fd-9a15-2b0f2798302b/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c36982-2803-48fd-9a15-2b0f2798302b/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c36982-2803-48fd-9a15-2b0f2798302b/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_22c36982-2803-48fd-9a15-2b0f2798302b/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 3edc5a2d9ce2881b3565fd36253c94b9cf356a0dafd043fa3f9d27823541c09b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:50:13,929 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:50:14,045 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c36982-2803-48fd-9a15-2b0f2798302b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:50:14,055 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:50:14,056 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:50:14,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:50:14,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:50:14,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:50:14,099 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:50:14,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:50:14,107 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:50:14,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:50:14,108 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:50:14,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:50:14,110 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:50:14,110 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:50:14,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:50:14,111 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:50:14,111 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:50:14,112 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:50:14,112 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:50:14,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:50:14,113 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:50:14,114 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:50:14,114 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:50:14,115 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:50:14,116 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:50:14,116 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:50:14,117 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:50:14,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:14,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:50:14,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:50:14,119 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:50:14,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:50:14,120 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:50:14,120 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:50:14,120 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:50:14,120 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:50:14,121 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_22c36982-2803-48fd-9a15-2b0f2798302b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c36982-2803-48fd-9a15-2b0f2798302b/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3edc5a2d9ce2881b3565fd36253c94b9cf356a0dafd043fa3f9d27823541c09b [2023-11-19 07:50:14,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:50:14,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:50:14,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:50:14,415 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:50:14,415 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:50:14,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c36982-2803-48fd-9a15-2b0f2798302b/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe027_power.opt.i [2023-11-19 07:50:17,848 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:50:18,142 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:50:18,143 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c36982-2803-48fd-9a15-2b0f2798302b/sv-benchmarks/c/pthread-wmm/safe027_power.opt.i [2023-11-19 07:50:18,165 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c36982-2803-48fd-9a15-2b0f2798302b/bin/uautomizer-verify-uCwYo4JHxu/data/f7bfc093d/95515ebd7bd5400986e6a81cef729688/FLAG56eade98e [2023-11-19 07:50:18,182 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c36982-2803-48fd-9a15-2b0f2798302b/bin/uautomizer-verify-uCwYo4JHxu/data/f7bfc093d/95515ebd7bd5400986e6a81cef729688 [2023-11-19 07:50:18,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:50:18,186 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:50:18,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:18,188 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:50:18,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:50:18,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:18,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c40da5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18, skipping insertion in model container [2023-11-19 07:50:18,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:18,265 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:50:18,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:18,829 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:50:18,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:18,969 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:50:18,970 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:50:18,978 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:50:18,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18 WrapperNode [2023-11-19 07:50:18,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:18,980 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:18,980 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:50:18,980 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:50:18,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:19,041 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:19,085 INFO L138 Inliner]: procedures = 177, calls = 89, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 200 [2023-11-19 07:50:19,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:19,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:50:19,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:50:19,088 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:50:19,097 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:19,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:19,113 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:19,118 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:19,148 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:19,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:19,165 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:19,168 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:19,178 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:50:19,179 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:50:19,185 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:50:19,185 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:50:19,186 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (1/1) ... [2023-11-19 07:50:19,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:19,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c36982-2803-48fd-9a15-2b0f2798302b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:19,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c36982-2803-48fd-9a15-2b0f2798302b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:50:19,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c36982-2803-48fd-9a15-2b0f2798302b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:50:19,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:50:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:50:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:50:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:50:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:50:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:50:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:50:19,323 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:50:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:50:19,323 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:50:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:50:19,324 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:50:19,324 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:50:19,324 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:50:19,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:50:19,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:50:19,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:50:19,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:50:19,328 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 07:50:19,530 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:50:19,531 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:50:20,313 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:50:21,204 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:50:21,204 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:50:21,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:21 BoogieIcfgContainer [2023-11-19 07:50:21,214 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:50:21,218 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:50:21,218 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:50:21,221 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:50:21,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:50:18" (1/3) ... [2023-11-19 07:50:21,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b03f8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:21, skipping insertion in model container [2023-11-19 07:50:21,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:18" (2/3) ... [2023-11-19 07:50:21,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b03f8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:21, skipping insertion in model container [2023-11-19 07:50:21,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:21" (3/3) ... [2023-11-19 07:50:21,227 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_power.opt.i [2023-11-19 07:50:21,249 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:50:21,250 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2023-11-19 07:50:21,250 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:50:21,519 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:50:21,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 264 transitions, 544 flow [2023-11-19 07:50:21,806 INFO L124 PetriNetUnfolderBase]: 54/260 cut-off events. [2023-11-19 07:50:21,806 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:50:21,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 260 events. 54/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 419 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 200. Up to 5 conditions per place. [2023-11-19 07:50:21,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 264 transitions, 544 flow [2023-11-19 07:50:21,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 260 transitions, 532 flow [2023-11-19 07:50:21,844 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:50:21,867 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 260 transitions, 532 flow [2023-11-19 07:50:21,872 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 260 transitions, 532 flow [2023-11-19 07:50:21,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 260 transitions, 532 flow [2023-11-19 07:50:21,969 INFO L124 PetriNetUnfolderBase]: 54/260 cut-off events. [2023-11-19 07:50:21,970 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:50:21,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 260 events. 54/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 413 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 200. Up to 5 conditions per place. [2023-11-19 07:50:21,989 INFO L119 LiptonReduction]: Number of co-enabled transitions 22746 [2023-11-19 07:50:39,474 INFO L134 LiptonReduction]: Checked pairs total: 62129 [2023-11-19 07:50:39,475 INFO L136 LiptonReduction]: Total number of compositions: 279 [2023-11-19 07:50:39,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:50:39,498 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;@cc74af4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:50:39,499 INFO L358 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2023-11-19 07:50:39,502 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:50:39,502 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 07:50:39,502 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:50:39,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:39,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:50:39,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-11-19 07:50:39,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:39,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1606, now seen corresponding path program 1 times [2023-11-19 07:50:39,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:39,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040065344] [2023-11-19 07:50:39,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:39,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:39,678 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 07:50:39,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:39,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040065344] [2023-11-19 07:50:39,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040065344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:39,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:39,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:50:39,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425466111] [2023-11-19 07:50:39,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:39,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:50:39,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:39,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:50:39,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:50:39,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 543 [2023-11-19 07:50:39,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 90 transitions, 192 flow. Second operand has 2 states, 2 states have (on average 150.5) internal successors, (301), 2 states have internal predecessors, (301), 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 07:50:39,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:39,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 543 [2023-11-19 07:50:39,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand