./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/bigshot_s2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/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_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/bigshot_s2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:13:56,728 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:13:56,844 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:13:56,853 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:13:56,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:13:56,892 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:13:56,893 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:13:56,893 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:13:56,894 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:13:56,899 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:13:56,901 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:13:56,901 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:13:56,902 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:13:56,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:13:56,904 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:13:56,905 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:13:56,905 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:13:56,905 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:13:56,906 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:13:56,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:13:56,907 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:13:56,907 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:13:56,908 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:13:56,908 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:13:56,909 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:13:56,910 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:13:56,910 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:13:56,911 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:13:56,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:13:56,912 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:13:56,913 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:13:56,913 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:13:56,914 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:13:56,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:13:56,914 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:13:56,914 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:13:56,915 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:13:56,915 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:13:56,915 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:13:56,916 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_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb [2023-11-06 21:13:57,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:13:57,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:13:57,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:13:57,275 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:13:57,275 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:13:57,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/bigshot_s2.i [2023-11-06 21:14:00,377 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:14:00,705 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:14:00,705 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/sv-benchmarks/c/pthread/bigshot_s2.i [2023-11-06 21:14:00,725 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/data/a2d4fd74b/75cb1e20bab640beb9560a5479a0f741/FLAGaeafc1206 [2023-11-06 21:14:00,742 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/data/a2d4fd74b/75cb1e20bab640beb9560a5479a0f741 [2023-11-06 21:14:00,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:14:00,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:14:00,754 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:00,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:14:00,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:14:00,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:00" (1/1) ... [2023-11-06 21:14:00,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ea296a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:00, skipping insertion in model container [2023-11-06 21:14:00,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:00" (1/1) ... [2023-11-06 21:14:00,835 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:14:01,450 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/sv-benchmarks/c/pthread/bigshot_s2.i[55203,55216] [2023-11-06 21:14:01,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:01,484 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:14:01,538 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/sv-benchmarks/c/pthread/bigshot_s2.i[55203,55216] [2023-11-06 21:14:01,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:01,634 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:14:01,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:01 WrapperNode [2023-11-06 21:14:01,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:01,636 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:01,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:14:01,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:14:01,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:01" (1/1) ... [2023-11-06 21:14:01,665 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:01" (1/1) ... [2023-11-06 21:14:01,708 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-06 21:14:01,709 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:01,711 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:14:01,711 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:14:01,711 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:14:01,720 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:01" (1/1) ... [2023-11-06 21:14:01,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:01" (1/1) ... [2023-11-06 21:14:01,725 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:01" (1/1) ... [2023-11-06 21:14:01,725 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:01" (1/1) ... [2023-11-06 21:14:01,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:01" (1/1) ... [2023-11-06 21:14:01,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:01" (1/1) ... [2023-11-06 21:14:01,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:01" (1/1) ... [2023-11-06 21:14:01,742 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:01" (1/1) ... [2023-11-06 21:14:01,758 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:14:01,759 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:14:01,760 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:14:01,760 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:14:01,761 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:01" (1/1) ... [2023-11-06 21:14:01,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:01,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:01,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:01,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:14:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:14:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:14:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-06 21:14:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:14:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 21:14:01,847 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 21:14:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 21:14:01,847 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 21:14:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:14:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:14:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:14:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:14:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:14:01,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:14:01,852 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 21:14:02,078 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:14:02,080 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:14:02,244 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:14:02,252 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:14:02,252 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:14:02,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:02 BoogieIcfgContainer [2023-11-06 21:14:02,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:14:02,257 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:14:02,257 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:14:02,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:14:02,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:14:00" (1/3) ... [2023-11-06 21:14:02,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abc7bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:02, skipping insertion in model container [2023-11-06 21:14:02,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:01" (2/3) ... [2023-11-06 21:14:02,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abc7bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:02, skipping insertion in model container [2023-11-06 21:14:02,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:02" (3/3) ... [2023-11-06 21:14:02,269 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2023-11-06 21:14:02,279 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:14:02,290 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:14:02,290 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:14:02,291 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:14:02,417 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 21:14:02,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 86 transitions, 186 flow [2023-11-06 21:14:02,544 INFO L124 PetriNetUnfolderBase]: 4/84 cut-off events. [2023-11-06 21:14:02,544 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:14:02,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 4/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-11-06 21:14:02,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 86 transitions, 186 flow [2023-11-06 21:14:02,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 70 transitions, 152 flow [2023-11-06 21:14:02,559 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:14:02,578 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 70 transitions, 152 flow [2023-11-06 21:14:02,583 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 70 transitions, 152 flow [2023-11-06 21:14:02,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 70 transitions, 152 flow [2023-11-06 21:14:02,611 INFO L124 PetriNetUnfolderBase]: 3/70 cut-off events. [2023-11-06 21:14:02,612 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:14:02,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 70 events. 3/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-11-06 21:14:02,614 INFO L119 LiptonReduction]: Number of co-enabled transitions 156 [2023-11-06 21:14:05,917 INFO L134 LiptonReduction]: Checked pairs total: 190 [2023-11-06 21:14:05,917 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-11-06 21:14:05,932 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:14:05,939 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;@5321e691, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:14:05,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-06 21:14:05,944 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:14:05,944 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-11-06 21:14:05,944 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:14:05,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:14:05,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:05,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 21:14:05,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:05,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1961458909, now seen corresponding path program 1 times [2023-11-06 21:14:05,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:05,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611815561] [2023-11-06 21:14:05,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:05,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:06,290 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 21:14:06,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:06,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611815561] [2023-11-06 21:14:06,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611815561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:06,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:06,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:14:06,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431882485] [2023-11-06 21:14:06,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:06,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:14:06,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:06,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:14:06,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:14:06,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 148 [2023-11-06 21:14:06,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 21:14:06,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:14:06,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 148 [2023-11-06 21:14:06,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:14:06,445 INFO L124 PetriNetUnfolderBase]: 5/20 cut-off events. [2023-11-06 21:14:06,445 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:14:06,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 20 events. 5/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 2 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 29. Up to 17 conditions per place. [2023-11-06 21:14:06,447 INFO L140 encePairwiseOnDemand]: 146/148 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-11-06 21:14:06,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 68 flow [2023-11-06 21:14:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:14:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:14:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2023-11-06 21:14:06,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5472972972972973 [2023-11-06 21:14:06,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2023-11-06 21:14:06,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2023-11-06 21:14:06,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:14:06,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2023-11-06 21:14:06,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 21:14:06,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 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 21:14:06,487 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 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 21:14:06,489 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 40 flow. Second operand 3 states and 243 transitions. [2023-11-06 21:14:06,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 68 flow [2023-11-06 21:14:06,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 60 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 21:14:06,496 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 32 flow [2023-11-06 21:14:06,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, 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=32, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2023-11-06 21:14:06,503 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-11-06 21:14:06,503 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 32 flow [2023-11-06 21:14:06,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 21:14:06,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:14:06,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:06,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:14:06,532 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 21:14:06,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:06,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1482653232, now seen corresponding path program 1 times [2023-11-06 21:14:06,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:06,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527344116] [2023-11-06 21:14:06,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:06,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:07,088 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 21:14:07,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:07,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527344116] [2023-11-06 21:14:07,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527344116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:07,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:07,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:14:07,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036143043] [2023-11-06 21:14:07,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:07,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:14:07,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:07,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:14:07,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:14:07,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-11-06 21:14:07,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 32 flow. Second operand has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 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 21:14:07,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:14:07,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-11-06 21:14:07,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:14:07,307 INFO L124 PetriNetUnfolderBase]: 9/28 cut-off events. [2023-11-06 21:14:07,307 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 21:14:07,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 28 events. 9/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 2 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 47. Up to 13 conditions per place. [2023-11-06 21:14:07,310 INFO L140 encePairwiseOnDemand]: 144/148 looper letters, 13 selfloop transitions, 5 changer transitions 0/18 dead transitions. [2023-11-06 21:14:07,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 18 transitions, 78 flow [2023-11-06 21:14:07,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:14:07,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:14:07,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 275 transitions. [2023-11-06 21:14:07,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46452702702702703 [2023-11-06 21:14:07,317 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 275 transitions. [2023-11-06 21:14:07,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 275 transitions. [2023-11-06 21:14:07,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:14:07,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 275 transitions. [2023-11-06 21:14:07,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 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 21:14:07,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 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 21:14:07,325 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 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 21:14:07,327 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 32 flow. Second operand 4 states and 275 transitions. [2023-11-06 21:14:07,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 18 transitions, 78 flow [2023-11-06 21:14:07,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 77 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:14:07,330 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 60 flow [2023-11-06 21:14:07,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-11-06 21:14:07,331 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2023-11-06 21:14:07,332 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 60 flow [2023-11-06 21:14:07,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 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 21:14:07,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:14:07,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:07,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:14:07,340 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 21:14:07,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:07,343 INFO L85 PathProgramCache]: Analyzing trace with hash -743385726, now seen corresponding path program 1 times [2023-11-06 21:14:07,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:07,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752507029] [2023-11-06 21:14:07,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:07,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:07,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:07,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752507029] [2023-11-06 21:14:07,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752507029] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:14:07,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621413141] [2023-11-06 21:14:07,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:07,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:07,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:07,851 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:07,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:14:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:07,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-06 21:14:08,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:08,111 INFO L322 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-11-06 21:14:08,112 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 39 [2023-11-06 21:14:08,127 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:14:08,217 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:14:08,323 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 21:14:08,323 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-11-06 21:14:08,395 INFO L322 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-06 21:14:08,396 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 35 [2023-11-06 21:14:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:08,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:14:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:08,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621413141] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:14:08,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:14:08,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 17 [2023-11-06 21:14:08,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195790295] [2023-11-06 21:14:08,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:14:08,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 21:14:08,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:08,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 21:14:08,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-11-06 21:14:10,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 148 [2023-11-06 21:14:10,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 60 flow. Second operand has 18 states, 18 states have (on average 60.05555555555556) internal successors, (1081), 18 states have internal predecessors, (1081), 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 21:14:10,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:14:10,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 148 [2023-11-06 21:14:10,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:14:10,596 INFO L124 PetriNetUnfolderBase]: 15/43 cut-off events. [2023-11-06 21:14:10,596 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-06 21:14:10,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 43 events. 15/43 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 1 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 113. Up to 14 conditions per place. [2023-11-06 21:14:10,597 INFO L140 encePairwiseOnDemand]: 143/148 looper letters, 17 selfloop transitions, 8 changer transitions 3/28 dead transitions. [2023-11-06 21:14:10,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 156 flow [2023-11-06 21:14:10,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:14:10,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 21:14:10,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 494 transitions. [2023-11-06 21:14:10,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172297297297297 [2023-11-06 21:14:10,601 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 494 transitions. [2023-11-06 21:14:10,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 494 transitions. [2023-11-06 21:14:10,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:14:10,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 494 transitions. [2023-11-06 21:14:10,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 61.75) internal successors, (494), 8 states have internal predecessors, (494), 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 21:14:10,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 148.0) internal successors, (1332), 9 states have internal predecessors, (1332), 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 21:14:10,608 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 148.0) internal successors, (1332), 9 states have internal predecessors, (1332), 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 21:14:10,608 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 60 flow. Second operand 8 states and 494 transitions. [2023-11-06 21:14:10,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 156 flow [2023-11-06 21:14:10,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 154 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-06 21:14:10,610 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 104 flow [2023-11-06 21:14:10,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=104, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-11-06 21:14:10,611 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 12 predicate places. [2023-11-06 21:14:10,612 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 104 flow [2023-11-06 21:14:10,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 60.05555555555556) internal successors, (1081), 18 states have internal predecessors, (1081), 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 21:14:10,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:14:10,613 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:10,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:10,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:10,819 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 21:14:10,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:10,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1740776008, now seen corresponding path program 2 times [2023-11-06 21:14:10,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:10,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607760360] [2023-11-06 21:14:10,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:10,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:11,676 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:11,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:11,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607760360] [2023-11-06 21:14:11,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607760360] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:14:11,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725554351] [2023-11-06 21:14:11,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:14:11,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:11,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:11,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:11,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:14:11,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:14:11,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:14:11,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-06 21:14:11,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:11,884 INFO L322 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-11-06 21:14:11,885 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-11-06 21:14:11,940 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:14:12,021 INFO L322 Elim1Store]: treesize reduction 68, result has 28.4 percent of original size [2023-11-06 21:14:12,022 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 36 [2023-11-06 21:14:12,041 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:14:12,189 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-06 21:14:12,190 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2023-11-06 21:14:12,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:12,292 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-06 21:14:12,421 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:14:12,474 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:14:12,544 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:14:12,603 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:14:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:12,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:14:12,738 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_105 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_105) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-11-06 21:14:12,747 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_105 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_105) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-11-06 21:14:13,079 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2023-11-06 21:14:13,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725554351] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:14:13,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:14:13,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2023-11-06 21:14:13,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001448087] [2023-11-06 21:14:13,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:14:13,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 21:14:13,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:13,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 21:14:13,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=526, Unknown=11, NotChecked=94, Total=702 [2023-11-06 21:14:13,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 148 [2023-11-06 21:14:13,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 104 flow. Second operand has 27 states, 27 states have (on average 38.629629629629626) internal successors, (1043), 27 states have internal predecessors, (1043), 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 21:14:13,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:14:13,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 148 [2023-11-06 21:14:13,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:14:13,984 INFO L124 PetriNetUnfolderBase]: 13/40 cut-off events. [2023-11-06 21:14:13,984 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-06 21:14:13,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 40 events. 13/40 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 2 based on Foata normal form. 2/42 useless extension candidates. Maximal degree in co-relation 134. Up to 14 conditions per place. [2023-11-06 21:14:13,985 INFO L140 encePairwiseOnDemand]: 144/148 looper letters, 17 selfloop transitions, 9 changer transitions 0/26 dead transitions. [2023-11-06 21:14:13,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 26 transitions, 177 flow [2023-11-06 21:14:13,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:14:13,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 21:14:13,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 323 transitions. [2023-11-06 21:14:13,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27280405405405406 [2023-11-06 21:14:13,988 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 323 transitions. [2023-11-06 21:14:13,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 323 transitions. [2023-11-06 21:14:13,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:14:13,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 323 transitions. [2023-11-06 21:14:13,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.375) internal successors, (323), 8 states have internal predecessors, (323), 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 21:14:13,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 148.0) internal successors, (1332), 9 states have internal predecessors, (1332), 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 21:14:13,993 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 148.0) internal successors, (1332), 9 states have internal predecessors, (1332), 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 21:14:13,993 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 104 flow. Second operand 8 states and 323 transitions. [2023-11-06 21:14:13,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 26 transitions, 177 flow [2023-11-06 21:14:13,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 147 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-06 21:14:13,997 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 110 flow [2023-11-06 21:14:13,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=110, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2023-11-06 21:14:13,998 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 16 predicate places. [2023-11-06 21:14:13,998 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 110 flow [2023-11-06 21:14:13,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 38.629629629629626) internal successors, (1043), 27 states have internal predecessors, (1043), 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 21:14:13,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:14:13,999 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:14,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:14:14,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:14,206 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 21:14:14,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:14,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1870127874, now seen corresponding path program 3 times [2023-11-06 21:14:14,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:14,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700916881] [2023-11-06 21:14:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:14,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:14,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:14,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700916881] [2023-11-06 21:14:14,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700916881] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:14:14,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067479893] [2023-11-06 21:14:14,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 21:14:14,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:14:14,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:14,984 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:14:15,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:14:15,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-06 21:14:15,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:14:15,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-06 21:14:15,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:14:15,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:15,139 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:14:15,156 INFO L322 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-06 21:14:15,156 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-06 21:14:15,224 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:14:15,322 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 21:14:15,323 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-11-06 21:14:15,408 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 21:14:15,409 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-06 21:14:15,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:15,488 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 21:14:15,488 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-06 21:14:15,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:15,603 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 21:14:15,603 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-06 21:14:15,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:15,706 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 21:14:15,707 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-06 21:14:15,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:14:15,795 INFO L322 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-06 21:14:15,796 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 35 [2023-11-06 21:14:15,887 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:15,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:14:17,987 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_161 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_71| Int)) (or (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_71| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 1)) (= 66 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (let ((.cse0 (store (select |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_161))) (store .cse0 (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_71| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| .cse0) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_71| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|))))) c_~v~0.base) c_~v~0.offset)))) is different from false [2023-11-06 21:14:50,389 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_159 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_74| Int) (v_ArrVal_157 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_73| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_72| Int) (v_ArrVal_155 Int) (v_ArrVal_161 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_71| Int)) (or (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_71| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_72| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_73| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_74| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_72| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_73| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_74| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 1)) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (let ((.cse0 (store (store (store (store (select |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_155) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_74| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_157) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_73| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_159) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_72| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_161))) (store .cse0 (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_71| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| .cse0) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_71| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|))))) c_~v~0.base) c_~v~0.offset) 66))) is different from false [2023-11-06 21:15:28,185 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_159 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_74| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_73| Int) (~v~0.base Int) (v_ArrVal_157 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_72| Int) (v_ArrVal_155 Int) (v_ArrVal_152 (Array Int Int)) (v_ArrVal_161 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_71| Int)) (or (= 66 (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_152))) (let ((.cse0 (store (store (store (store (store (select .cse1 ~v~0.base) 0 (select (select .cse1 3) 0)) 1 v_ArrVal_155) |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_74| v_ArrVal_157) |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_73| v_ArrVal_159) |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_72| v_ArrVal_161))) (store .cse0 |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_71| (select (select (store .cse1 ~v~0.base .cse0) 3) |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_71|)))) 0)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_71| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_72| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_73| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_74| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_74| 2) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_72| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_73| 1)))) is different from false [2023-11-06 21:15:28,223 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 3 times theorem prover too weak. 0 trivial. 9 not checked. [2023-11-06 21:15:28,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067479893] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:15:28,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:15:28,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 31 [2023-11-06 21:15:28,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33037019] [2023-11-06 21:15:28,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:15:28,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-06 21:15:28,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:28,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-06 21:15:28,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=669, Unknown=36, NotChecked=168, Total=992 [2023-11-06 21:15:28,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 148 [2023-11-06 21:15:28,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 110 flow. Second operand has 32 states, 32 states have (on average 39.59375) internal successors, (1267), 32 states have internal predecessors, (1267), 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 21:15:28,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:28,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 148 [2023-11-06 21:15:28,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:30,354 INFO L124 PetriNetUnfolderBase]: 11/37 cut-off events. [2023-11-06 21:15:30,355 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-06 21:15:30,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 37 events. 11/37 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 29 event pairs, 1 based on Foata normal form. 3/40 useless extension candidates. Maximal degree in co-relation 115. Up to 10 conditions per place. [2023-11-06 21:15:30,355 INFO L140 encePairwiseOnDemand]: 143/148 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-11-06 21:15:30,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 26 transitions, 161 flow [2023-11-06 21:15:30,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 21:15:30,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 21:15:30,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 446 transitions. [2023-11-06 21:15:30,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.273955773955774 [2023-11-06 21:15:30,359 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 446 transitions. [2023-11-06 21:15:30,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 446 transitions. [2023-11-06 21:15:30,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:30,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 446 transitions. [2023-11-06 21:15:30,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 40.54545454545455) internal successors, (446), 11 states have internal predecessors, (446), 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 21:15:30,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 148.0) internal successors, (1776), 12 states have internal predecessors, (1776), 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 21:15:30,365 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 148.0) internal successors, (1776), 12 states have internal predecessors, (1776), 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 21:15:30,365 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 110 flow. Second operand 11 states and 446 transitions. [2023-11-06 21:15:30,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 26 transitions, 161 flow [2023-11-06 21:15:30,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 149 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 21:15:30,368 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-11-06 21:15:30,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-11-06 21:15:30,369 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 19 predicate places. [2023-11-06 21:15:30,369 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-11-06 21:15:30,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 39.59375) internal successors, (1267), 32 states have internal predecessors, (1267), 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 21:15:30,373 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-06 21:15:30,373 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-06 21:15:30,374 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-06 21:15:30,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:30,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:30,589 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-11-06 21:15:30,592 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 21:15:30,592 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:15:30,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:15:30 BasicIcfg [2023-11-06 21:15:30,596 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:15:30,598 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:15:30,599 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:15:30,599 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:15:30,600 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:02" (3/4) ... [2023-11-06 21:15:30,602 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 21:15:30,606 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 21:15:30,606 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 21:15:30,610 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-06 21:15:30,610 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-06 21:15:30,610 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 21:15:30,610 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 21:15:30,610 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 21:15:30,652 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 21:15:30,652 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 21:15:30,652 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:15:30,653 INFO L158 Benchmark]: Toolchain (without parser) took 89902.16ms. Allocated memory was 138.4MB in the beginning and 268.4MB in the end (delta: 130.0MB). Free memory was 75.8MB in the beginning and 140.5MB in the end (delta: -64.7MB). Peak memory consumption was 66.7MB. Max. memory is 16.1GB. [2023-11-06 21:15:30,653 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 138.4MB. Free memory was 103.6MB in the beginning and 103.6MB in the end (delta: 31.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:15:30,654 INFO L158 Benchmark]: CACSL2BoogieTranslator took 881.10ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 75.5MB in the beginning and 131.5MB in the end (delta: -56.0MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2023-11-06 21:15:30,654 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.47ms. Allocated memory is still 184.5MB. Free memory was 131.5MB in the beginning and 128.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:15:30,655 INFO L158 Benchmark]: Boogie Preprocessor took 47.89ms. Allocated memory is still 184.5MB. Free memory was 128.6MB in the beginning and 127.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:15:30,655 INFO L158 Benchmark]: RCFGBuilder took 494.92ms. Allocated memory is still 184.5MB. Free memory was 127.2MB in the beginning and 113.5MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 21:15:30,656 INFO L158 Benchmark]: TraceAbstraction took 88339.15ms. Allocated memory was 184.5MB in the beginning and 268.4MB in the end (delta: 83.9MB). Free memory was 112.7MB in the beginning and 143.4MB in the end (delta: -30.7MB). Peak memory consumption was 52.7MB. Max. memory is 16.1GB. [2023-11-06 21:15:30,656 INFO L158 Benchmark]: Witness Printer took 54.32ms. Allocated memory is still 268.4MB. Free memory was 143.4MB in the beginning and 140.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:15:30,658 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 138.4MB. Free memory was 103.6MB in the beginning and 103.6MB in the end (delta: 31.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 881.10ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 75.5MB in the beginning and 131.5MB in the end (delta: -56.0MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.47ms. Allocated memory is still 184.5MB. Free memory was 131.5MB in the beginning and 128.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.89ms. Allocated memory is still 184.5MB. Free memory was 128.6MB in the beginning and 127.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 494.92ms. Allocated memory is still 184.5MB. Free memory was 127.2MB in the beginning and 113.5MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 88339.15ms. Allocated memory was 184.5MB in the beginning and 268.4MB in the end (delta: 83.9MB). Free memory was 112.7MB in the beginning and 143.4MB in the end (delta: -30.7MB). Peak memory consumption was 52.7MB. Max. memory is 16.1GB. * Witness Printer took 54.32ms. Allocated memory is still 268.4MB. Free memory was 143.4MB in the beginning and 140.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 74 PlacesBefore, 19 PlacesAfterwards, 70 TransitionsBefore, 14 TransitionsAfterwards, 156 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 62 TotalNumberOfCompositions, 190 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 162, independent: 152, independent conditional: 0, independent unconditional: 152, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 98, independent: 93, independent conditional: 0, independent unconditional: 93, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 162, independent: 59, independent conditional: 0, independent unconditional: 59, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 98, unknown conditional: 0, unknown unconditional: 98] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1107]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 110 locations, 3 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: 88.1s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 721 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 632 mSDsluCounter, 910 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 180 IncrementalHoareTripleChecker+Unchecked, 904 mSDsCounter, 149 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3062 IncrementalHoareTripleChecker+Invalid, 3391 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 149 mSolverCounterUnsat, 6 mSDtfsCounter, 3062 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 50 SyntacticMatches, 9 SemanticMatches, 97 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 74.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=4, InterpolantAutomatonStates: 34, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 77.7s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 150 ConstructedInterpolants, 27 QuantifiedInterpolants, 3308 SizeOfPredicates, 13 NumberOfNonLiveVariables, 588 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 6/78 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 21:15:30,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f0fd7d3-ade8-4258-8eeb-02425755dc3e/bin/uautomizer-verify-WvqO1wxjHP/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