./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_f518cecf-569d-472c-81d7-4e14749ac43a/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f518cecf-569d-472c-81d7-4e14749ac43a/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f518cecf-569d-472c-81d7-4e14749ac43a/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f518cecf-569d-472c-81d7-4e14749ac43a/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f518cecf-569d-472c-81d7-4e14749ac43a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f518cecf-569d-472c-81d7-4e14749ac43a/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --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 86978482104e316c202a01b019909b1a7fe566ade6200bbc4193c078d7c086e9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:14:17,523 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:14:17,670 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f518cecf-569d-472c-81d7-4e14749ac43a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:14:17,678 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:14:17,679 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:14:17,722 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:14:17,724 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:14:17,724 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:14:17,725 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:14:17,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:14:17,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:14:17,729 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:14:17,729 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:14:17,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:14:17,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:14:17,731 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:14:17,732 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:14:17,732 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:14:17,733 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:14:17,733 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:14:17,734 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:14:17,735 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:14:17,735 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:14:17,736 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:14:17,736 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:14:17,736 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:14:17,737 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:14:17,737 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:14:17,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:14:17,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:14:17,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:14:17,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:14:17,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:14:17,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:14:17,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:14:17,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:14:17,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:14:17,741 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:14:17,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:14:17,742 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:14:17,742 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:14:17,742 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_f518cecf-569d-472c-81d7-4e14749ac43a/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f518cecf-569d-472c-81d7-4e14749ac43a/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86978482104e316c202a01b019909b1a7fe566ade6200bbc4193c078d7c086e9 [2023-11-12 02:14:18,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:14:18,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:14:18,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:14:18,081 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:14:18,082 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:14:18,083 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f518cecf-569d-472c-81d7-4e14749ac43a/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2023-11-12 02:14:21,367 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:14:21,600 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:14:21,601 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f518cecf-569d-472c-81d7-4e14749ac43a/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2023-11-12 02:14:21,613 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f518cecf-569d-472c-81d7-4e14749ac43a/bin/uautomizer-verify-uTZkv6EMXl/data/825d39bba/f5990279b47646a4824118e68782d8e6/FLAG9aeecf5e7 [2023-11-12 02:14:21,632 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f518cecf-569d-472c-81d7-4e14749ac43a/bin/uautomizer-verify-uTZkv6EMXl/data/825d39bba/f5990279b47646a4824118e68782d8e6 [2023-11-12 02:14:21,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:14:21,642 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:14:21,644 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:14:21,644 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:14:21,650 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:14:21,651 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:14:21" (1/1) ... [2023-11-12 02:14:21,652 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678c94d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:21, skipping insertion in model container [2023-11-12 02:14:21,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:14:21" (1/1) ... [2023-11-12 02:14:21,685 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:14:21,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:14:21,946 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:14:21,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:14:22,017 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:14:22,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:22 WrapperNode [2023-11-12 02:14:22,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:14:22,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:14:22,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:14:22,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:14:22,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:22" (1/1) ... [2023-11-12 02:14:22,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:22" (1/1) ... [2023-11-12 02:14:22,091 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 157 [2023-11-12 02:14:22,091 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:14:22,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:14:22,092 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:14:22,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:14:22,104 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:22" (1/1) ... [2023-11-12 02:14:22,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:22" (1/1) ... [2023-11-12 02:14:22,119 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:22" (1/1) ... [2023-11-12 02:14:22,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:22" (1/1) ... [2023-11-12 02:14:22,130 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:22" (1/1) ... [2023-11-12 02:14:22,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:22" (1/1) ... [2023-11-12 02:14:22,135 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:22" (1/1) ... [2023-11-12 02:14:22,137 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:22" (1/1) ... [2023-11-12 02:14:22,140 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:14:22,157 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:14:22,157 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:14:22,157 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:14:22,158 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:22" (1/1) ... [2023-11-12 02:14:22,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:14:22,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f518cecf-569d-472c-81d7-4e14749ac43a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:14:22,203 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f518cecf-569d-472c-81d7-4e14749ac43a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:14:22,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f518cecf-569d-472c-81d7-4e14749ac43a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:14:22,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:14:22,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:14:22,251 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:14:22,251 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:14:22,251 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:14:22,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:14:22,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:14:22,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:14:22,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:14:22,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:14:22,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:14:22,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:14:22,255 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:14:22,366 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:14:22,369 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:14:22,696 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:14:22,708 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:14:22,709 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:14:22,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:14:22 BoogieIcfgContainer [2023-11-12 02:14:22,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:14:22,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:14:22,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:14:22,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:14:22,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:14:21" (1/3) ... [2023-11-12 02:14:22,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a449dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:14:22, skipping insertion in model container [2023-11-12 02:14:22,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:22" (2/3) ... [2023-11-12 02:14:22,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a449dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:14:22, skipping insertion in model container [2023-11-12 02:14:22,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:14:22" (3/3) ... [2023-11-12 02:14:22,722 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2023-11-12 02:14:22,732 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:14:22,744 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:14:22,744 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-12 02:14:22,744 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:14:22,954 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:14:23,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 214 transitions, 442 flow [2023-11-12 02:14:23,158 INFO L124 PetriNetUnfolderBase]: 15/212 cut-off events. [2023-11-12 02:14:23,159 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:14:23,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 212 events. 15/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 431 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2023-11-12 02:14:23,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 214 transitions, 442 flow [2023-11-12 02:14:23,174 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 174 transitions, 357 flow [2023-11-12 02:14:23,178 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:14:23,192 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 174 transitions, 357 flow [2023-11-12 02:14:23,197 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 174 transitions, 357 flow [2023-11-12 02:14:23,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 174 transitions, 357 flow [2023-11-12 02:14:23,289 INFO L124 PetriNetUnfolderBase]: 12/174 cut-off events. [2023-11-12 02:14:23,289 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:14:23,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 174 events. 12/174 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 363 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2023-11-12 02:14:23,299 INFO L119 LiptonReduction]: Number of co-enabled transitions 9828 [2023-11-12 02:14:35,633 INFO L134 LiptonReduction]: Checked pairs total: 9441 [2023-11-12 02:14:35,633 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-11-12 02:14:35,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:14:35,655 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=LoopHeads, 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;@466bb194, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:14:35,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-12 02:14:35,658 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:14:35,658 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-12 02:14:35,658 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:14:35,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:14:35,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:14:35,660 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:14:35,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:35,665 INFO L85 PathProgramCache]: Analyzing trace with hash 859816, now seen corresponding path program 1 times [2023-11-12 02:14:35,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:35,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783451117] [2023-11-12 02:14:35,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:35,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:35,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:14:35,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:14:35,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783451117] [2023-11-12 02:14:35,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783451117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:14:35,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:14:35,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:14:35,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127443292] [2023-11-12 02:14:35,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:14:35,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:14:35,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:14:35,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:14:35,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:14:35,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 450 [2023-11-12 02:14:35,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 51 flow. Second operand has 2 states, 2 states have (on average 203.5) internal successors, (407), 2 states have internal predecessors, (407), 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) [2023-11-12 02:14:35,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:14:35,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 450 [2023-11-12 02:14:35,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:14:35,984 INFO L124 PetriNetUnfolderBase]: 105/202 cut-off events. [2023-11-12 02:14:35,984 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-12 02:14:35,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 202 events. 105/202 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 787 event pairs, 105 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 368. Up to 203 conditions per place. [2023-11-12 02:14:35,988 INFO L140 encePairwiseOnDemand]: 446/450 looper letters, 17 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-11-12 02:14:35,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 17 transitions, 77 flow [2023-11-12 02:14:35,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:14:35,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:14:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 425 transitions. [2023-11-12 02:14:36,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-11-12 02:14:36,019 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 425 transitions. [2023-11-12 02:14:36,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 425 transitions. [2023-11-12 02:14:36,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:14:36,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 425 transitions. [2023-11-12 02:14:36,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 212.5) internal successors, (425), 2 states have internal predecessors, (425), 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) [2023-11-12 02:14:36,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 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) [2023-11-12 02:14:36,041 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 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) [2023-11-12 02:14:36,043 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 51 flow. Second operand 2 states and 425 transitions. [2023-11-12 02:14:36,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 17 transitions, 77 flow [2023-11-12 02:14:36,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:14:36,049 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 38 flow [2023-11-12 02:14:36,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=450, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2023-11-12 02:14:36,058 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -6 predicate places. [2023-11-12 02:14:36,058 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 38 flow [2023-11-12 02:14:36,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 203.5) internal successors, (407), 2 states have internal predecessors, (407), 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) [2023-11-12 02:14:36,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:14:36,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:14:36,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:14:36,060 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:14:36,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:36,071 INFO L85 PathProgramCache]: Analyzing trace with hash 859865, now seen corresponding path program 1 times [2023-11-12 02:14:36,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:36,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625538762] [2023-11-12 02:14:36,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:36,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:36,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:14:36,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:14:36,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625538762] [2023-11-12 02:14:36,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625538762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:14:36,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:14:36,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:14:36,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629354457] [2023-11-12 02:14:36,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:14:36,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:14:36,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:14:36,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:14:36,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:14:36,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 450 [2023-11-12 02:14:36,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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) [2023-11-12 02:14:36,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:14:36,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 450 [2023-11-12 02:14:36,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:14:36,367 INFO L124 PetriNetUnfolderBase]: 72/143 cut-off events. [2023-11-12 02:14:36,367 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:14:36,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 143 events. 72/143 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 503 event pairs, 72 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 297. Up to 143 conditions per place. [2023-11-12 02:14:36,369 INFO L140 encePairwiseOnDemand]: 447/450 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-11-12 02:14:36,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 15 transitions, 64 flow [2023-11-12 02:14:36,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:14:36,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:14:36,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 617 transitions. [2023-11-12 02:14:36,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457037037037037 [2023-11-12 02:14:36,373 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 617 transitions. [2023-11-12 02:14:36,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 617 transitions. [2023-11-12 02:14:36,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:14:36,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 617 transitions. [2023-11-12 02:14:36,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 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) [2023-11-12 02:14:36,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 450.0) internal successors, (1800), 4 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:36,383 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 450.0) internal successors, (1800), 4 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:36,384 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 38 flow. Second operand 3 states and 617 transitions. [2023-11-12 02:14:36,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 15 transitions, 64 flow [2023-11-12 02:14:36,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 64 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:14:36,385 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 36 flow [2023-11-12 02:14:36,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=450, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2023-11-12 02:14:36,386 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -6 predicate places. [2023-11-12 02:14:36,387 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 36 flow [2023-11-12 02:14:36,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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) [2023-11-12 02:14:36,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:14:36,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:14:36,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:14:36,389 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:14:36,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:36,389 INFO L85 PathProgramCache]: Analyzing trace with hash 859862, now seen corresponding path program 1 times [2023-11-12 02:14:36,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:36,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405758669] [2023-11-12 02:14:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:36,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:14:36,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:14:36,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405758669] [2023-11-12 02:14:36,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405758669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:14:36,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:14:36,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:14:36,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175710729] [2023-11-12 02:14:36,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:14:36,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:14:36,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:14:36,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:14:36,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:14:36,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 450 [2023-11-12 02:14:36,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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) [2023-11-12 02:14:36,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:14:36,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 450 [2023-11-12 02:14:36,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:14:36,550 INFO L124 PetriNetUnfolderBase]: 45/94 cut-off events. [2023-11-12 02:14:36,551 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:14:36,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 94 events. 45/94 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 283 event pairs, 45 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 198. Up to 94 conditions per place. [2023-11-12 02:14:36,552 INFO L140 encePairwiseOnDemand]: 447/450 looper letters, 12 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2023-11-12 02:14:36,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 13 transitions, 58 flow [2023-11-12 02:14:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:14:36,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:14:36,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2023-11-12 02:14:36,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2023-11-12 02:14:36,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2023-11-12 02:14:36,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2023-11-12 02:14:36,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:14:36,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2023-11-12 02:14:36,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 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) [2023-11-12 02:14:36,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 450.0) internal successors, (1800), 4 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:36,565 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 450.0) internal successors, (1800), 4 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:36,565 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 36 flow. Second operand 3 states and 615 transitions. [2023-11-12 02:14:36,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 13 transitions, 58 flow [2023-11-12 02:14:36,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 13 transitions, 57 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:14:36,567 INFO L231 Difference]: Finished difference. Result has 21 places, 13 transitions, 33 flow [2023-11-12 02:14:36,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=450, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=33, PETRI_PLACES=21, PETRI_TRANSITIONS=13} [2023-11-12 02:14:36,569 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -7 predicate places. [2023-11-12 02:14:36,569 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 13 transitions, 33 flow [2023-11-12 02:14:36,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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) [2023-11-12 02:14:36,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:14:36,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:14:36,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:14:36,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:14:36,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:36,576 INFO L85 PathProgramCache]: Analyzing trace with hash 859864, now seen corresponding path program 1 times [2023-11-12 02:14:36,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:36,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883482202] [2023-11-12 02:14:36,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:36,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:14:36,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:14:36,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883482202] [2023-11-12 02:14:36,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883482202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:14:36,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:14:36,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:14:36,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588373333] [2023-11-12 02:14:36,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:14:36,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:14:36,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:14:36,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:14:36,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:14:36,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 450 [2023-11-12 02:14:36,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 13 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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) [2023-11-12 02:14:36,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:14:36,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 450 [2023-11-12 02:14:36,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:14:36,761 INFO L124 PetriNetUnfolderBase]: 24/55 cut-off events. [2023-11-12 02:14:36,762 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:14:36,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 55 events. 24/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 128 event pairs, 24 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 119. Up to 55 conditions per place. [2023-11-12 02:14:36,763 INFO L140 encePairwiseOnDemand]: 447/450 looper letters, 10 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2023-11-12 02:14:36,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 11 transitions, 51 flow [2023-11-12 02:14:36,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:14:36,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:14:36,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2023-11-12 02:14:36,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540740740740741 [2023-11-12 02:14:36,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2023-11-12 02:14:36,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2023-11-12 02:14:36,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:14:36,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2023-11-12 02:14:36,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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) [2023-11-12 02:14:36,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 450.0) internal successors, (1800), 4 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:36,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 450.0) internal successors, (1800), 4 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:36,776 INFO L175 Difference]: Start difference. First operand has 21 places, 13 transitions, 33 flow. Second operand 3 states and 613 transitions. [2023-11-12 02:14:36,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 11 transitions, 51 flow [2023-11-12 02:14:36,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 11 transitions, 50 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:14:36,777 INFO L231 Difference]: Finished difference. Result has 20 places, 11 transitions, 30 flow [2023-11-12 02:14:36,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=450, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=20, PETRI_TRANSITIONS=11} [2023-11-12 02:14:36,778 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -8 predicate places. [2023-11-12 02:14:36,779 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 11 transitions, 30 flow [2023-11-12 02:14:36,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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) [2023-11-12 02:14:36,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:14:36,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:14:36,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:14:36,780 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:14:36,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:36,781 INFO L85 PathProgramCache]: Analyzing trace with hash 859828, now seen corresponding path program 1 times [2023-11-12 02:14:36,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:36,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686712857] [2023-11-12 02:14:36,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:36,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:36,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:14:36,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:14:36,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686712857] [2023-11-12 02:14:36,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686712857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:14:36,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:14:36,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:14:36,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082565880] [2023-11-12 02:14:36,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:14:36,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:14:36,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:14:36,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:14:36,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:14:36,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 450 [2023-11-12 02:14:36,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 11 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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) [2023-11-12 02:14:36,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:14:36,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 450 [2023-11-12 02:14:36,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:14:36,864 INFO L124 PetriNetUnfolderBase]: 9/26 cut-off events. [2023-11-12 02:14:36,864 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:14:36,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 26 events. 9/26 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 9 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 60. Up to 26 conditions per place. [2023-11-12 02:14:36,865 INFO L140 encePairwiseOnDemand]: 447/450 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2023-11-12 02:14:36,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 9 transitions, 44 flow [2023-11-12 02:14:36,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:14:36,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:14:36,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-11-12 02:14:36,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4525925925925926 [2023-11-12 02:14:36,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-11-12 02:14:36,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-11-12 02:14:36,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:14:36,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-11-12 02:14:36,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 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) [2023-11-12 02:14:36,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 450.0) internal successors, (1800), 4 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:36,878 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 450.0) internal successors, (1800), 4 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:36,878 INFO L175 Difference]: Start difference. First operand has 20 places, 11 transitions, 30 flow. Second operand 3 states and 611 transitions. [2023-11-12 02:14:36,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 9 transitions, 44 flow [2023-11-12 02:14:36,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 9 transitions, 43 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:14:36,879 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-11-12 02:14:36,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=450, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-11-12 02:14:36,880 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -9 predicate places. [2023-11-12 02:14:36,880 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-11-12 02:14:36,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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) [2023-11-12 02:14:36,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 26 remaining) [2023-11-12 02:14:36,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2023-11-12 02:14:36,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2023-11-12 02:14:36,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2023-11-12 02:14:36,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2023-11-12 02:14:36,886 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2023-11-12 02:14:36,886 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2023-11-12 02:14:36,886 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2023-11-12 02:14:36,886 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2023-11-12 02:14:36,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2023-11-12 02:14:36,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2023-11-12 02:14:36,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2023-11-12 02:14:36,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 26 remaining) [2023-11-12 02:14:36,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2023-11-12 02:14:36,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2023-11-12 02:14:36,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2023-11-12 02:14:36,889 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2023-11-12 02:14:36,889 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2023-11-12 02:14:36,889 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2023-11-12 02:14:36,889 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2023-11-12 02:14:36,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2023-11-12 02:14:36,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2023-11-12 02:14:36,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2023-11-12 02:14:36,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2023-11-12 02:14:36,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2023-11-12 02:14:36,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2023-11-12 02:14:36,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:14:36,891 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-12 02:14:36,897 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:14:36,897 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:14:36,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:14:36 BasicIcfg [2023-11-12 02:14:36,902 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:14:36,902 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:14:36,902 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:14:36,903 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:14:36,903 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:14:22" (3/4) ... [2023-11-12 02:14:36,905 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:14:36,909 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-12 02:14:36,909 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-12 02:14:36,914 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-12 02:14:36,915 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:14:36,915 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:14:36,915 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:14:36,994 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f518cecf-569d-472c-81d7-4e14749ac43a/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:14:36,994 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f518cecf-569d-472c-81d7-4e14749ac43a/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:14:36,995 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:14:36,995 INFO L158 Benchmark]: Toolchain (without parser) took 15353.22ms. Allocated memory was 155.2MB in the beginning and 190.8MB in the end (delta: 35.7MB). Free memory was 121.2MB in the beginning and 103.6MB in the end (delta: 17.6MB). Peak memory consumption was 53.5MB. Max. memory is 16.1GB. [2023-11-12 02:14:36,996 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 107.0MB. Free memory was 70.4MB in the beginning and 70.3MB in the end (delta: 117.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:14:36,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.45ms. Allocated memory is still 155.2MB. Free memory was 121.2MB in the beginning and 110.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:14:36,997 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.15ms. Allocated memory is still 155.2MB. Free memory was 110.2MB in the beginning and 107.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:14:36,997 INFO L158 Benchmark]: Boogie Preprocessor took 48.02ms. Allocated memory is still 155.2MB. Free memory was 107.8MB in the beginning and 106.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:14:36,997 INFO L158 Benchmark]: RCFGBuilder took 554.75ms. Allocated memory is still 155.2MB. Free memory was 106.5MB in the beginning and 87.7MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 02:14:36,998 INFO L158 Benchmark]: TraceAbstraction took 14186.64ms. Allocated memory was 155.2MB in the beginning and 190.8MB in the end (delta: 35.7MB). Free memory was 87.2MB in the beginning and 107.8MB in the end (delta: -20.6MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2023-11-12 02:14:36,998 INFO L158 Benchmark]: Witness Printer took 92.47ms. Allocated memory is still 190.8MB. Free memory was 107.8MB in the beginning and 103.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:14:37,000 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 107.0MB. Free memory was 70.4MB in the beginning and 70.3MB in the end (delta: 117.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 374.45ms. Allocated memory is still 155.2MB. Free memory was 121.2MB in the beginning and 110.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.15ms. Allocated memory is still 155.2MB. Free memory was 110.2MB in the beginning and 107.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.02ms. Allocated memory is still 155.2MB. Free memory was 107.8MB in the beginning and 106.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 554.75ms. Allocated memory is still 155.2MB. Free memory was 106.5MB in the beginning and 87.7MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 14186.64ms. Allocated memory was 155.2MB in the beginning and 190.8MB in the end (delta: 35.7MB). Free memory was 87.2MB in the beginning and 107.8MB in the end (delta: -20.6MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. * Witness Printer took 92.47ms. Allocated memory is still 190.8MB. Free memory was 107.8MB in the beginning and 103.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.4s, 169 PlacesBefore, 28 PlacesAfterwards, 174 TransitionsBefore, 21 TransitionsAfterwards, 9828 CoEnabledTransitionPairs, 8 FixpointIterations, 34 TrivialSequentialCompositions, 147 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 43 ConcurrentYvCompositions, 12 ChoiceCompositions, 236 TotalNumberOfCompositions, 9441 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9441, independent: 9441, independent conditional: 0, independent unconditional: 9441, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5967, independent: 5967, independent conditional: 0, independent unconditional: 5967, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9441, independent: 3474, independent conditional: 0, independent unconditional: 3474, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 5967, unknown conditional: 0, unknown unconditional: 5967] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 318 locations, 26 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 87 IncrementalHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 10 mSDtfsCounter, 87 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 34 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 02:14:37,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f518cecf-569d-472c-81d7-4e14749ac43a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE