./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_cb976137-5195-43d4-b9ce-7449db651212/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb976137-5195-43d4-b9ce-7449db651212/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_cb976137-5195-43d4-b9ce-7449db651212/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb976137-5195-43d4-b9ce-7449db651212/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb976137-5195-43d4-b9ce-7449db651212/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb976137-5195-43d4-b9ce-7449db651212/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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da9f6c449f4da806b6a3bb0aaf2c3c9171ea9b71d075f7e8b1d9543f656f7b8b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:50:40,025 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:50:40,105 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb976137-5195-43d4-b9ce-7449db651212/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:50:40,109 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:50:40,110 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:50:40,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:50:40,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:50:40,138 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:50:40,139 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:50:40,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:50:40,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:50:40,141 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:50:40,142 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:50:40,143 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:50:40,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:50:40,144 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:50:40,144 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:50:40,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:50:40,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:50:40,146 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:50:40,146 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:50:40,147 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:50:40,147 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:50:40,148 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:50:40,148 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:50:40,149 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:50:40,149 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:50:40,150 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:50:40,150 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:50:40,150 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:50:40,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:50:40,152 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:50:40,152 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:50:40,153 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:50:40,153 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:50:40,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:50:40,153 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:50:40,154 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:50:40,154 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:50:40,154 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:50:40,154 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:50:40,155 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_cb976137-5195-43d4-b9ce-7449db651212/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb976137-5195-43d4-b9ce-7449db651212/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da9f6c449f4da806b6a3bb0aaf2c3c9171ea9b71d075f7e8b1d9543f656f7b8b [2023-11-06 22:50:40,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:50:40,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:50:40,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:50:40,514 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:50:40,515 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:50:40,516 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb976137-5195-43d4-b9ce-7449db651212/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i [2023-11-06 22:50:43,691 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:50:44,147 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:50:44,148 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb976137-5195-43d4-b9ce-7449db651212/sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i [2023-11-06 22:50:44,181 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb976137-5195-43d4-b9ce-7449db651212/bin/uautomizer-verify-WvqO1wxjHP/data/1dcd2facf/4bd074771cac430ea21e927d7432670e/FLAG95454b99d [2023-11-06 22:50:44,203 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb976137-5195-43d4-b9ce-7449db651212/bin/uautomizer-verify-WvqO1wxjHP/data/1dcd2facf/4bd074771cac430ea21e927d7432670e [2023-11-06 22:50:44,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:50:44,208 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:50:44,210 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:50:44,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:50:44,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:50:44,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:50:44" (1/1) ... [2023-11-06 22:50:44,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@498b0f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:44, skipping insertion in model container [2023-11-06 22:50:44,222 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:50:44" (1/1) ... [2023-11-06 22:50:44,287 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:50:45,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:50:45,186 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:50:45,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:50:45,427 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:50:45,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:45 WrapperNode [2023-11-06 22:50:45,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:50:45,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:50:45,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:50:45,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:50:45,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:45" (1/1) ... [2023-11-06 22:50:45,462 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:45" (1/1) ... [2023-11-06 22:50:45,527 INFO L138 Inliner]: procedures = 279, calls = 87, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 375 [2023-11-06 22:50:45,527 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:50:45,528 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:50:45,528 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:50:45,528 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:50:45,541 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:45" (1/1) ... [2023-11-06 22:50:45,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:45" (1/1) ... [2023-11-06 22:50:45,549 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:45" (1/1) ... [2023-11-06 22:50:45,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:45" (1/1) ... [2023-11-06 22:50:45,578 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:45" (1/1) ... [2023-11-06 22:50:45,598 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:45" (1/1) ... [2023-11-06 22:50:45,601 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:45" (1/1) ... [2023-11-06 22:50:45,603 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:45" (1/1) ... [2023-11-06 22:50:45,609 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:50:45,610 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:50:45,610 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:50:45,610 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:50:45,611 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:45" (1/1) ... [2023-11-06 22:50:45,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:50:45,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb976137-5195-43d4-b9ce-7449db651212/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:50:45,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb976137-5195-43d4-b9ce-7449db651212/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:50:45,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb976137-5195-43d4-b9ce-7449db651212/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:50:45,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:50:45,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:50:45,704 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-06 22:50:45,704 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-06 22:50:45,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:50:45,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:50:45,705 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-06 22:50:45,705 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-06 22:50:45,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:50:45,705 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:50:45,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:50:45,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:50:45,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:50:45,706 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-11-06 22:50:45,707 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-11-06 22:50:45,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:50:45,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:50:45,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:50:45,709 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 22:50:45,972 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:50:45,974 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:50:46,690 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:50:46,708 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:50:46,708 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-11-06 22:50:46,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:50:46 BoogieIcfgContainer [2023-11-06 22:50:46,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:50:46,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:50:46,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:50:46,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:50:46,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:50:44" (1/3) ... [2023-11-06 22:50:46,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45064517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:50:46, skipping insertion in model container [2023-11-06 22:50:46,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:45" (2/3) ... [2023-11-06 22:50:46,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45064517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:50:46, skipping insertion in model container [2023-11-06 22:50:46,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:50:46" (3/3) ... [2023-11-06 22:50:46,723 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_85-list2_racefree.i [2023-11-06 22:50:46,733 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:50:46,746 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:50:46,747 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-06 22:50:46,747 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:50:46,909 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-11-06 22:50:46,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 418 transitions, 875 flow [2023-11-06 22:50:47,614 INFO L124 PetriNetUnfolderBase]: 170/1330 cut-off events. [2023-11-06 22:50:47,615 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-06 22:50:47,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1384 conditions, 1330 events. 170/1330 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8749 event pairs, 0 based on Foata normal form. 0/1078 useless extension candidates. Maximal degree in co-relation 674. Up to 16 conditions per place. [2023-11-06 22:50:47,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 418 transitions, 875 flow [2023-11-06 22:50:47,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 378 places, 418 transitions, 875 flow [2023-11-06 22:50:47,692 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:50:47,702 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 378 places, 418 transitions, 875 flow [2023-11-06 22:50:47,706 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 378 places, 418 transitions, 875 flow [2023-11-06 22:50:47,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 418 transitions, 875 flow [2023-11-06 22:50:48,152 INFO L124 PetriNetUnfolderBase]: 170/1330 cut-off events. [2023-11-06 22:50:48,152 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-06 22:50:48,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1384 conditions, 1330 events. 170/1330 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8749 event pairs, 0 based on Foata normal form. 0/1078 useless extension candidates. Maximal degree in co-relation 674. Up to 16 conditions per place. [2023-11-06 22:50:48,370 INFO L119 LiptonReduction]: Number of co-enabled transitions 77018 [2023-11-06 22:51:13,737 INFO L134 LiptonReduction]: Checked pairs total: 136108 [2023-11-06 22:51:13,738 INFO L136 LiptonReduction]: Total number of compositions: 367 [2023-11-06 22:51:13,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:51:13,763 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@695aa354, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:51:13,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-06 22:51:13,768 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:51:13,768 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-06 22:51:13,769 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:51:13,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:13,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:51:13,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-06 22:51:13,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:13,776 INFO L85 PathProgramCache]: Analyzing trace with hash 50747302, now seen corresponding path program 1 times [2023-11-06 22:51:13,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:13,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541070548] [2023-11-06 22:51:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:13,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:14,235 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 22:51:14,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:14,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541070548] [2023-11-06 22:51:14,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541070548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:14,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:14,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:51:14,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858880153] [2023-11-06 22:51:14,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:14,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:14,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:14,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:14,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:14,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 785 [2023-11-06 22:51:14,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 132 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 367.3333333333333) internal successors, (1102), 3 states have internal predecessors, (1102), 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 22:51:14,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:14,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 785 [2023-11-06 22:51:14,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:40,673 INFO L124 PetriNetUnfolderBase]: 178076/254827 cut-off events. [2023-11-06 22:51:40,673 INFO L125 PetriNetUnfolderBase]: For 6343/6343 co-relation queries the response was YES. [2023-11-06 22:51:41,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496610 conditions, 254827 events. 178076/254827 cut-off events. For 6343/6343 co-relation queries the response was YES. Maximal size of possible extension queue 6496. Compared 1981190 event pairs, 121125 based on Foata normal form. 23184/211953 useless extension candidates. Maximal degree in co-relation 439908. Up to 238759 conditions per place. [2023-11-06 22:51:42,096 INFO L140 encePairwiseOnDemand]: 757/785 looper letters, 98 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2023-11-06 22:51:42,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 115 transitions, 469 flow [2023-11-06 22:51:42,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:42,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:42,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1224 transitions. [2023-11-06 22:51:42,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197452229299363 [2023-11-06 22:51:42,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1224 transitions. [2023-11-06 22:51:42,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1224 transitions. [2023-11-06 22:51:42,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:42,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1224 transitions. [2023-11-06 22:51:42,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 408.0) internal successors, (1224), 3 states have internal predecessors, (1224), 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 22:51:42,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 785.0) internal successors, (3140), 4 states have internal predecessors, (3140), 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 22:51:42,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 785.0) internal successors, (3140), 4 states have internal predecessors, (3140), 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 22:51:42,165 INFO L175 Difference]: Start difference. First operand has 103 places, 132 transitions, 303 flow. Second operand 3 states and 1224 transitions. [2023-11-06 22:51:42,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 115 transitions, 469 flow [2023-11-06 22:51:42,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 115 transitions, 469 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:51:42,275 INFO L231 Difference]: Finished difference. Result has 104 places, 107 transitions, 261 flow [2023-11-06 22:51:42,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=785, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=104, PETRI_TRANSITIONS=107} [2023-11-06 22:51:42,284 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 1 predicate places. [2023-11-06 22:51:42,285 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 107 transitions, 261 flow [2023-11-06 22:51:42,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 367.3333333333333) internal successors, (1102), 3 states have internal predecessors, (1102), 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 22:51:42,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:42,286 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:51:42,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:51:42,287 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-06 22:51:42,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:42,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1523564430, now seen corresponding path program 1 times [2023-11-06 22:51:42,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:42,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690839856] [2023-11-06 22:51:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:42,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:42,380 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:51:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:42,433 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:51:42,434 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:51:42,445 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-11-06 22:51:42,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2023-11-06 22:51:42,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2023-11-06 22:51:42,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2023-11-06 22:51:42,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2023-11-06 22:51:42,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2023-11-06 22:51:42,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2023-11-06 22:51:42,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2023-11-06 22:51:42,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2023-11-06 22:51:42,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2023-11-06 22:51:42,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2023-11-06 22:51:42,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2023-11-06 22:51:42,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2023-11-06 22:51:42,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2023-11-06 22:51:42,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2023-11-06 22:51:42,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2023-11-06 22:51:42,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2023-11-06 22:51:42,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2023-11-06 22:51:42,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2023-11-06 22:51:42,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2023-11-06 22:51:42,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2023-11-06 22:51:42,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 31 remaining) [2023-11-06 22:51:42,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 31 remaining) [2023-11-06 22:51:42,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2023-11-06 22:51:42,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2023-11-06 22:51:42,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2023-11-06 22:51:42,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2023-11-06 22:51:42,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2023-11-06 22:51:42,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2023-11-06 22:51:42,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2023-11-06 22:51:42,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2023-11-06 22:51:42,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:51:42,467 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:51:42,471 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:51:42,476 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:51:42,580 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-06 22:51:42,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 594 places, 669 transitions, 1422 flow [2023-11-06 22:51:45,383 INFO L124 PetriNetUnfolderBase]: 1154/7031 cut-off events. [2023-11-06 22:51:45,383 INFO L125 PetriNetUnfolderBase]: For 602/638 co-relation queries the response was YES. [2023-11-06 22:51:45,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7679 conditions, 7031 events. 1154/7031 cut-off events. For 602/638 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 68516 event pairs, 22 based on Foata normal form. 0/5659 useless extension candidates. Maximal degree in co-relation 4279. Up to 192 conditions per place. [2023-11-06 22:51:45,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 594 places, 669 transitions, 1422 flow [2023-11-06 22:51:45,742 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 594 places, 669 transitions, 1422 flow [2023-11-06 22:51:45,743 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:51:45,743 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 594 places, 669 transitions, 1422 flow [2023-11-06 22:51:45,743 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 594 places, 669 transitions, 1422 flow [2023-11-06 22:51:45,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 594 places, 669 transitions, 1422 flow [2023-11-06 22:51:48,865 INFO L124 PetriNetUnfolderBase]: 1154/7031 cut-off events. [2023-11-06 22:51:48,865 INFO L125 PetriNetUnfolderBase]: For 602/638 co-relation queries the response was YES. [2023-11-06 22:51:49,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7679 conditions, 7031 events. 1154/7031 cut-off events. For 602/638 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 68516 event pairs, 22 based on Foata normal form. 0/5659 useless extension candidates. Maximal degree in co-relation 4279. Up to 192 conditions per place. [2023-11-06 22:51:50,320 INFO L119 LiptonReduction]: Number of co-enabled transitions 278024 [2023-11-06 22:52:15,137 INFO L134 LiptonReduction]: Checked pairs total: 588379 [2023-11-06 22:52:15,137 INFO L136 LiptonReduction]: Total number of compositions: 569 [2023-11-06 22:52:15,140 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:52:15,141 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@695aa354, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:52:15,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-11-06 22:52:15,146 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:52:15,146 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2023-11-06 22:52:15,146 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:52:15,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:15,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:52:15,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:52:15,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:15,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1309132709, now seen corresponding path program 1 times [2023-11-06 22:52:15,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:15,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812305851] [2023-11-06 22:52:15,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:15,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:15,318 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 22:52:15,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:15,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812305851] [2023-11-06 22:52:15,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812305851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:15,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:15,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:52:15,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834170596] [2023-11-06 22:52:15,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:15,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:15,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:15,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:15,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:15,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 577 out of 1238 [2023-11-06 22:52:15,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 228 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 578.3333333333334) internal successors, (1735), 3 states have internal predecessors, (1735), 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 22:52:15,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:15,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 577 of 1238 [2023-11-06 22:52:15,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand