./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:42:32,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:42:32,688 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:42:32,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:42:32,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:42:32,735 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:42:32,740 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:42:32,741 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:42:32,742 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:42:32,747 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:42:32,747 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:42:32,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:42:32,749 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:42:32,751 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:42:32,751 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:42:32,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:42:32,752 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:42:32,753 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:42:32,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:42:32,754 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:42:32,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:42:32,755 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:42:32,755 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:42:32,756 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:42:32,756 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:42:32,756 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:42:32,757 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:42:32,757 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:42:32,758 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:42:32,759 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:42:32,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:42:32,760 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:42:32,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:42:32,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:32,761 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:42:32,761 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:42:32,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:42:32,762 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:42:32,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:42:32,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:42:32,763 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:42:32,763 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:42:32,764 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:42:32,764 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:42:32,764 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_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2023-11-26 10:42:33,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:42:33,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:42:33,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:42:33,107 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:42:33,107 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:42:33,108 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2023-11-26 10:42:36,300 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:42:36,556 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:42:36,556 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2023-11-26 10:42:36,565 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/data/dd3ae31ca/570aabe1164f479d95fdd95e1d9fdece/FLAG3e3ce877e [2023-11-26 10:42:36,581 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/data/dd3ae31ca/570aabe1164f479d95fdd95e1d9fdece [2023-11-26 10:42:36,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:42:36,588 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:42:36,592 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:36,592 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:42:36,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:42:36,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:36" (1/1) ... [2023-11-26 10:42:36,599 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@100200ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:36, skipping insertion in model container [2023-11-26 10:42:36,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:36" (1/1) ... [2023-11-26 10:42:36,626 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:42:36,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:36,818 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:42:36,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:36,863 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:42:36,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:36 WrapperNode [2023-11-26 10:42:36,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:36,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:36,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:42:36,866 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:42:36,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:36" (1/1) ... [2023-11-26 10:42:36,883 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:36" (1/1) ... [2023-11-26 10:42:36,915 INFO L138 Inliner]: procedures = 25, calls = 47, calls flagged for inlining = 12, calls inlined = 18, statements flattened = 213 [2023-11-26 10:42:36,915 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:36,916 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:42:36,916 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:42:36,916 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:42:36,928 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:36" (1/1) ... [2023-11-26 10:42:36,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:36" (1/1) ... [2023-11-26 10:42:36,934 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:36" (1/1) ... [2023-11-26 10:42:36,955 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 2, 2, 2, 15]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 10 writes are split as follows [0, 1, 1, 1, 7]. [2023-11-26 10:42:36,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:36" (1/1) ... [2023-11-26 10:42:36,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:36" (1/1) ... [2023-11-26 10:42:36,968 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:36" (1/1) ... [2023-11-26 10:42:36,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:36" (1/1) ... [2023-11-26 10:42:36,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:36" (1/1) ... [2023-11-26 10:42:36,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:36" (1/1) ... [2023-11-26 10:42:37,003 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:42:37,004 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:42:37,004 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:42:37,004 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:42:37,005 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:36" (1/1) ... [2023-11-26 10:42:37,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:37,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:37,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:42:37,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:42:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:42:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:42:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:42:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:42:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:42:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:42:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 10:42:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:42:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:42:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:42:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 10:42:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 10:42:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 10:42:37,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 10:42:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 10:42:37,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 10:42:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 10:42:37,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 10:42:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:42:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:42:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:42:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:42:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:42:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:42:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:42:37,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:42:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:42:37,091 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:42:37,277 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:42:37,279 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:42:37,849 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:42:38,311 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:42:38,311 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-26 10:42:38,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:38 BoogieIcfgContainer [2023-11-26 10:42:38,312 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:42:38,316 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:42:38,316 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:42:38,320 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:42:38,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:42:36" (1/3) ... [2023-11-26 10:42:38,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b70453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:38, skipping insertion in model container [2023-11-26 10:42:38,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:36" (2/3) ... [2023-11-26 10:42:38,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b70453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:38, skipping insertion in model container [2023-11-26 10:42:38,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:38" (3/3) ... [2023-11-26 10:42:38,325 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2023-11-26 10:42:38,336 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:42:38,348 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:42:38,349 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-26 10:42:38,349 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:42:38,415 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 10:42:38,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 61 transitions, 143 flow [2023-11-26 10:42:38,535 INFO L124 PetriNetUnfolderBase]: 7/58 cut-off events. [2023-11-26 10:42:38,535 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 10:42:38,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 58 events. 7/58 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-11-26 10:42:38,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 61 transitions, 143 flow [2023-11-26 10:42:38,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 56 transitions, 127 flow [2023-11-26 10:42:38,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:42:38,566 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c07870b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:42:38,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-26 10:42:38,571 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:42:38,571 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 10:42:38,572 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:42:38,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:38,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 10:42:38,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:42:38,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:38,579 INFO L85 PathProgramCache]: Analyzing trace with hash 771824, now seen corresponding path program 1 times [2023-11-26 10:42:38,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:38,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365445758] [2023-11-26 10:42:38,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:38,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:38,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:38,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:38,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365445758] [2023-11-26 10:42:38,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365445758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:38,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:38,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:42:38,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572222852] [2023-11-26 10:42:38,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:38,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:38,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:38,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:38,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:38,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2023-11-26 10:42:38,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2023-11-26 10:42:38,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:38,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2023-11-26 10:42:38,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:39,284 INFO L124 PetriNetUnfolderBase]: 469/823 cut-off events. [2023-11-26 10:42:39,285 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-26 10:42:39,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1580 conditions, 823 events. 469/823 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3585 event pairs, 333 based on Foata normal form. 4/638 useless extension candidates. Maximal degree in co-relation 1289. Up to 675 conditions per place. [2023-11-26 10:42:39,302 INFO L140 encePairwiseOnDemand]: 47/61 looper letters, 29 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2023-11-26 10:42:39,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 197 flow [2023-11-26 10:42:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:42:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:42:39,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2023-11-26 10:42:39,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4385245901639344 [2023-11-26 10:42:39,322 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 107 transitions. [2023-11-26 10:42:39,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 107 transitions. [2023-11-26 10:42:39,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:39,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 107 transitions. [2023-11-26 10:42:39,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2023-11-26 10:42:39,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-26 10:42:39,339 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-26 10:42:39,342 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 127 flow. Second operand 4 states and 107 transitions. [2023-11-26 10:42:39,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 197 flow [2023-11-26 10:42:39,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 188 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 10:42:39,357 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 130 flow [2023-11-26 10:42:39,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2023-11-26 10:42:39,365 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -6 predicate places. [2023-11-26 10:42:39,366 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 130 flow [2023-11-26 10:42:39,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2023-11-26 10:42:39,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:39,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 10:42:39,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:42:39,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:42:39,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:39,368 INFO L85 PathProgramCache]: Analyzing trace with hash 23927301, now seen corresponding path program 1 times [2023-11-26 10:42:39,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:39,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067763325] [2023-11-26 10:42:39,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:39,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:39,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:39,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067763325] [2023-11-26 10:42:39,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067763325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:39,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:39,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:42:39,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47654740] [2023-11-26 10:42:39,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:39,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:39,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:39,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:39,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:39,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2023-11-26 10:42:39,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2023-11-26 10:42:39,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:39,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2023-11-26 10:42:39,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:39,868 INFO L124 PetriNetUnfolderBase]: 473/839 cut-off events. [2023-11-26 10:42:39,868 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-26 10:42:39,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1600 conditions, 839 events. 473/839 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3679 event pairs, 333 based on Foata normal form. 4/660 useless extension candidates. Maximal degree in co-relation 1512. Up to 692 conditions per place. [2023-11-26 10:42:39,876 INFO L140 encePairwiseOnDemand]: 44/61 looper letters, 38 selfloop transitions, 13 changer transitions 0/64 dead transitions. [2023-11-26 10:42:39,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 274 flow [2023-11-26 10:42:39,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:42:39,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:42:39,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2023-11-26 10:42:39,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48770491803278687 [2023-11-26 10:42:39,880 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 119 transitions. [2023-11-26 10:42:39,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 119 transitions. [2023-11-26 10:42:39,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:39,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 119 transitions. [2023-11-26 10:42:39,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2023-11-26 10:42:39,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-26 10:42:39,884 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-26 10:42:39,884 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 130 flow. Second operand 4 states and 119 transitions. [2023-11-26 10:42:39,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 274 flow [2023-11-26 10:42:39,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 64 transitions, 236 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 10:42:39,888 INFO L231 Difference]: Finished difference. Result has 56 places, 64 transitions, 218 flow [2023-11-26 10:42:39,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=56, PETRI_TRANSITIONS=64} [2023-11-26 10:42:39,890 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2023-11-26 10:42:39,890 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 64 transitions, 218 flow [2023-11-26 10:42:39,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2023-11-26 10:42:39,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:39,891 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 10:42:39,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:42:39,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:42:39,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:39,893 INFO L85 PathProgramCache]: Analyzing trace with hash -145567351, now seen corresponding path program 1 times [2023-11-26 10:42:39,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:39,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918490186] [2023-11-26 10:42:39,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:39,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:40,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:40,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918490186] [2023-11-26 10:42:40,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918490186] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:42:40,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483376882] [2023-11-26 10:42:40,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:40,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:40,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:40,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:40,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:42:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:40,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:42:40,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:40,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:40,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:42:40,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:40,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483376882] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:42:40,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:42:40,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-26 10:42:40,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930665328] [2023-11-26 10:42:40,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:42:40,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:42:40,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:40,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:42:40,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:42:40,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2023-11-26 10:42:40,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 64 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 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) [2023-11-26 10:42:40,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:40,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2023-11-26 10:42:40,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:40,845 INFO L124 PetriNetUnfolderBase]: 485/887 cut-off events. [2023-11-26 10:42:40,846 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-26 10:42:40,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 887 events. 485/887 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4114 event pairs, 333 based on Foata normal form. 0/698 useless extension candidates. Maximal degree in co-relation 1529. Up to 695 conditions per place. [2023-11-26 10:42:40,857 INFO L140 encePairwiseOnDemand]: 44/61 looper letters, 38 selfloop transitions, 49 changer transitions 0/100 dead transitions. [2023-11-26 10:42:40,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 100 transitions, 554 flow [2023-11-26 10:42:40,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:42:40,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 10:42:40,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2023-11-26 10:42:40,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4245901639344262 [2023-11-26 10:42:40,864 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 259 transitions. [2023-11-26 10:42:40,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 259 transitions. [2023-11-26 10:42:40,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:40,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 259 transitions. [2023-11-26 10:42:40,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 25.9) internal successors, (259), 10 states have internal predecessors, (259), 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) [2023-11-26 10:42:40,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2023-11-26 10:42:40,874 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2023-11-26 10:42:40,875 INFO L175 Difference]: Start difference. First operand has 56 places, 64 transitions, 218 flow. Second operand 10 states and 259 transitions. [2023-11-26 10:42:40,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 100 transitions, 554 flow [2023-11-26 10:42:40,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 100 transitions, 554 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:42:40,881 INFO L231 Difference]: Finished difference. Result has 68 places, 100 transitions, 544 flow [2023-11-26 10:42:40,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=544, PETRI_PLACES=68, PETRI_TRANSITIONS=100} [2023-11-26 10:42:40,883 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 9 predicate places. [2023-11-26 10:42:40,883 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 100 transitions, 544 flow [2023-11-26 10:42:40,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 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) [2023-11-26 10:42:40,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:40,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:40,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 10:42:41,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:41,090 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:42:41,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:41,091 INFO L85 PathProgramCache]: Analyzing trace with hash 248633846, now seen corresponding path program 1 times [2023-11-26 10:42:41,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:41,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820674294] [2023-11-26 10:42:41,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:41,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:41,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:41,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:41,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820674294] [2023-11-26 10:42:41,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820674294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:41,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:41,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:42:41,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467586818] [2023-11-26 10:42:41,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:41,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:41,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:41,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:41,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:41,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-26 10:42:41,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 100 transitions, 544 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2023-11-26 10:42:41,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:41,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-26 10:42:41,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:41,680 INFO L124 PetriNetUnfolderBase]: 919/1566 cut-off events. [2023-11-26 10:42:41,680 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2023-11-26 10:42:41,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3153 conditions, 1566 events. 919/1566 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7723 event pairs, 493 based on Foata normal form. 42/1262 useless extension candidates. Maximal degree in co-relation 3029. Up to 1057 conditions per place. [2023-11-26 10:42:41,695 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 110 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2023-11-26 10:42:41,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 129 transitions, 836 flow [2023-11-26 10:42:41,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:42:41,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:42:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2023-11-26 10:42:41,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.639344262295082 [2023-11-26 10:42:41,697 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 156 transitions. [2023-11-26 10:42:41,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 156 transitions. [2023-11-26 10:42:41,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:41,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 156 transitions. [2023-11-26 10:42:41,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2023-11-26 10:42:41,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-26 10:42:41,700 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-26 10:42:41,700 INFO L175 Difference]: Start difference. First operand has 68 places, 100 transitions, 544 flow. Second operand 4 states and 156 transitions. [2023-11-26 10:42:41,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 129 transitions, 836 flow [2023-11-26 10:42:41,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 129 transitions, 710 flow, removed 32 selfloop flow, removed 4 redundant places. [2023-11-26 10:42:41,709 INFO L231 Difference]: Finished difference. Result has 69 places, 103 transitions, 447 flow [2023-11-26 10:42:41,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=447, PETRI_PLACES=69, PETRI_TRANSITIONS=103} [2023-11-26 10:42:41,710 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 10 predicate places. [2023-11-26 10:42:41,710 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 103 transitions, 447 flow [2023-11-26 10:42:41,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2023-11-26 10:42:41,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:41,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:41,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:42:41,712 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:42:41,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:41,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1611668383, now seen corresponding path program 1 times [2023-11-26 10:42:41,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:41,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071385041] [2023-11-26 10:42:41,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:41,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:41,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:41,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:41,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071385041] [2023-11-26 10:42:41,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071385041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:41,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:41,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:42:41,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731172314] [2023-11-26 10:42:41,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:41,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:41,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:41,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:41,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:41,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-26 10:42:41,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 103 transitions, 447 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2023-11-26 10:42:41,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:41,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-26 10:42:41,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:42,245 INFO L124 PetriNetUnfolderBase]: 1471/2399 cut-off events. [2023-11-26 10:42:42,245 INFO L125 PetriNetUnfolderBase]: For 899/971 co-relation queries the response was YES. [2023-11-26 10:42:42,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5558 conditions, 2399 events. 1471/2399 cut-off events. For 899/971 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12441 event pairs, 765 based on Foata normal form. 68/2014 useless extension candidates. Maximal degree in co-relation 5449. Up to 1601 conditions per place. [2023-11-26 10:42:42,272 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 119 selfloop transitions, 4 changer transitions 0/138 dead transitions. [2023-11-26 10:42:42,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 138 transitions, 807 flow [2023-11-26 10:42:42,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:42:42,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:42:42,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2023-11-26 10:42:42,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.639344262295082 [2023-11-26 10:42:42,275 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 156 transitions. [2023-11-26 10:42:42,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 156 transitions. [2023-11-26 10:42:42,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:42,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 156 transitions. [2023-11-26 10:42:42,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2023-11-26 10:42:42,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-26 10:42:42,277 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-26 10:42:42,277 INFO L175 Difference]: Start difference. First operand has 69 places, 103 transitions, 447 flow. Second operand 4 states and 156 transitions. [2023-11-26 10:42:42,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 138 transitions, 807 flow [2023-11-26 10:42:42,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 138 transitions, 798 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:42:42,286 INFO L231 Difference]: Finished difference. Result has 73 places, 106 transitions, 473 flow [2023-11-26 10:42:42,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=473, PETRI_PLACES=73, PETRI_TRANSITIONS=106} [2023-11-26 10:42:42,289 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 14 predicate places. [2023-11-26 10:42:42,290 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 106 transitions, 473 flow [2023-11-26 10:42:42,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2023-11-26 10:42:42,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:42,290 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:42,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:42:42,291 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:42:42,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:42,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1766867297, now seen corresponding path program 1 times [2023-11-26 10:42:42,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:42,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304927168] [2023-11-26 10:42:42,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:42,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:42,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:42:42,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:42,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304927168] [2023-11-26 10:42:42,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304927168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:42,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:42,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:42:42,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158364152] [2023-11-26 10:42:42,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:42,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:42:42,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:42,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:42:42,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:42,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 61 [2023-11-26 10:42:42,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 106 transitions, 473 flow. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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) [2023-11-26 10:42:42,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:42,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 61 [2023-11-26 10:42:42,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:43,133 INFO L124 PetriNetUnfolderBase]: 1664/3041 cut-off events. [2023-11-26 10:42:43,134 INFO L125 PetriNetUnfolderBase]: For 1701/1735 co-relation queries the response was YES. [2023-11-26 10:42:43,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7672 conditions, 3041 events. 1664/3041 cut-off events. For 1701/1735 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 17018 event pairs, 1034 based on Foata normal form. 62/2704 useless extension candidates. Maximal degree in co-relation 7487. Up to 1580 conditions per place. [2023-11-26 10:42:43,166 INFO L140 encePairwiseOnDemand]: 49/61 looper letters, 138 selfloop transitions, 35 changer transitions 0/190 dead transitions. [2023-11-26 10:42:43,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 190 transitions, 1170 flow [2023-11-26 10:42:43,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:42:43,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:42:43,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2023-11-26 10:42:43,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6639344262295082 [2023-11-26 10:42:43,168 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 243 transitions. [2023-11-26 10:42:43,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 243 transitions. [2023-11-26 10:42:43,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:43,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 243 transitions. [2023-11-26 10:42:43,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 40.5) internal successors, (243), 6 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) [2023-11-26 10:42:43,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 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) [2023-11-26 10:42:43,171 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 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) [2023-11-26 10:42:43,172 INFO L175 Difference]: Start difference. First operand has 73 places, 106 transitions, 473 flow. Second operand 6 states and 243 transitions. [2023-11-26 10:42:43,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 190 transitions, 1170 flow [2023-11-26 10:42:43,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 190 transitions, 1161 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:42:43,184 INFO L231 Difference]: Finished difference. Result has 80 places, 122 transitions, 667 flow [2023-11-26 10:42:43,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=667, PETRI_PLACES=80, PETRI_TRANSITIONS=122} [2023-11-26 10:42:43,185 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 21 predicate places. [2023-11-26 10:42:43,186 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 122 transitions, 667 flow [2023-11-26 10:42:43,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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) [2023-11-26 10:42:43,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:43,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:43,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:42:43,187 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:42:43,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:43,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1661089007, now seen corresponding path program 1 times [2023-11-26 10:42:43,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:43,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490089005] [2023-11-26 10:42:43,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:43,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:43,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:43,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490089005] [2023-11-26 10:42:43,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490089005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:43,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:43,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:42:43,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330788131] [2023-11-26 10:42:43,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:43,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:42:43,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:43,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:42:43,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:43,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-26 10:42:43,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 122 transitions, 667 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2023-11-26 10:42:43,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:43,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-26 10:42:43,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:43,941 INFO L124 PetriNetUnfolderBase]: 2008/3296 cut-off events. [2023-11-26 10:42:43,942 INFO L125 PetriNetUnfolderBase]: For 2843/3061 co-relation queries the response was YES. [2023-11-26 10:42:43,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8963 conditions, 3296 events. 2008/3296 cut-off events. For 2843/3061 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 16514 event pairs, 606 based on Foata normal form. 136/2952 useless extension candidates. Maximal degree in co-relation 8768. Up to 1214 conditions per place. [2023-11-26 10:42:43,981 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 138 selfloop transitions, 10 changer transitions 0/163 dead transitions. [2023-11-26 10:42:43,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 163 transitions, 1149 flow [2023-11-26 10:42:43,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:42:43,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:42:43,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2023-11-26 10:42:43,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5672131147540984 [2023-11-26 10:42:43,983 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 173 transitions. [2023-11-26 10:42:43,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 173 transitions. [2023-11-26 10:42:43,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:43,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 173 transitions. [2023-11-26 10:42:43,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 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) [2023-11-26 10:42:43,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 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) [2023-11-26 10:42:43,986 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 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) [2023-11-26 10:42:43,986 INFO L175 Difference]: Start difference. First operand has 80 places, 122 transitions, 667 flow. Second operand 5 states and 173 transitions. [2023-11-26 10:42:43,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 163 transitions, 1149 flow [2023-11-26 10:42:43,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 163 transitions, 1143 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-26 10:42:43,999 INFO L231 Difference]: Finished difference. Result has 83 places, 121 transitions, 679 flow [2023-11-26 10:42:44,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=679, PETRI_PLACES=83, PETRI_TRANSITIONS=121} [2023-11-26 10:42:44,000 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 24 predicate places. [2023-11-26 10:42:44,001 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 121 transitions, 679 flow [2023-11-26 10:42:44,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2023-11-26 10:42:44,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:44,001 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:44,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:42:44,001 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:42:44,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:44,002 INFO L85 PathProgramCache]: Analyzing trace with hash 227423099, now seen corresponding path program 1 times [2023-11-26 10:42:44,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:44,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318075338] [2023-11-26 10:42:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:44,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:44,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:42:44,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:44,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318075338] [2023-11-26 10:42:44,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318075338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:44,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:44,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:42:44,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651249563] [2023-11-26 10:42:44,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:44,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:42:44,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:44,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:42:44,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:42:44,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 61 [2023-11-26 10:42:44,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 121 transitions, 679 flow. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 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) [2023-11-26 10:42:44,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:44,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 61 [2023-11-26 10:42:44,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:44,809 INFO L124 PetriNetUnfolderBase]: 1354/2457 cut-off events. [2023-11-26 10:42:44,809 INFO L125 PetriNetUnfolderBase]: For 2260/2282 co-relation queries the response was YES. [2023-11-26 10:42:44,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6930 conditions, 2457 events. 1354/2457 cut-off events. For 2260/2282 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 13199 event pairs, 878 based on Foata normal form. 38/2246 useless extension candidates. Maximal degree in co-relation 6732. Up to 1580 conditions per place. [2023-11-26 10:42:44,841 INFO L140 encePairwiseOnDemand]: 46/61 looper letters, 98 selfloop transitions, 63 changer transitions 2/179 dead transitions. [2023-11-26 10:42:44,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 179 transitions, 1259 flow [2023-11-26 10:42:44,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:42:44,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 10:42:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 260 transitions. [2023-11-26 10:42:44,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6088992974238876 [2023-11-26 10:42:44,843 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 260 transitions. [2023-11-26 10:42:44,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 260 transitions. [2023-11-26 10:42:44,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:44,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 260 transitions. [2023-11-26 10:42:44,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 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) [2023-11-26 10:42:44,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 61.0) internal successors, (488), 8 states have internal predecessors, (488), 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) [2023-11-26 10:42:44,847 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 61.0) internal successors, (488), 8 states have internal predecessors, (488), 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) [2023-11-26 10:42:44,847 INFO L175 Difference]: Start difference. First operand has 83 places, 121 transitions, 679 flow. Second operand 7 states and 260 transitions. [2023-11-26 10:42:44,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 179 transitions, 1259 flow [2023-11-26 10:42:44,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 179 transitions, 1215 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 10:42:44,862 INFO L231 Difference]: Finished difference. Result has 89 places, 151 transitions, 1079 flow [2023-11-26 10:42:44,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1079, PETRI_PLACES=89, PETRI_TRANSITIONS=151} [2023-11-26 10:42:44,865 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 30 predicate places. [2023-11-26 10:42:44,865 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 151 transitions, 1079 flow [2023-11-26 10:42:44,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 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) [2023-11-26 10:42:44,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:44,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:44,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:42:44,866 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:42:44,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:44,867 INFO L85 PathProgramCache]: Analyzing trace with hash -45847503, now seen corresponding path program 1 times [2023-11-26 10:42:44,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:44,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039140805] [2023-11-26 10:42:44,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:44,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:44,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:44,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:44,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039140805] [2023-11-26 10:42:44,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039140805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:44,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:44,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:42:44,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684686654] [2023-11-26 10:42:44,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:44,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:42:44,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:44,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:42:44,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:45,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-26 10:42:45,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 151 transitions, 1079 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2023-11-26 10:42:45,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:45,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-26 10:42:45,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:45,603 INFO L124 PetriNetUnfolderBase]: 1586/2753 cut-off events. [2023-11-26 10:42:45,603 INFO L125 PetriNetUnfolderBase]: For 3434/3482 co-relation queries the response was YES. [2023-11-26 10:42:45,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7885 conditions, 2753 events. 1586/2753 cut-off events. For 3434/3482 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14312 event pairs, 1083 based on Foata normal form. 0/2391 useless extension candidates. Maximal degree in co-relation 7639. Up to 1898 conditions per place. [2023-11-26 10:42:45,626 INFO L140 encePairwiseOnDemand]: 46/61 looper letters, 74 selfloop transitions, 55 changer transitions 33/177 dead transitions. [2023-11-26 10:42:45,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 177 transitions, 1496 flow [2023-11-26 10:42:45,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:42:45,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:42:45,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2023-11-26 10:42:45,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6092896174863388 [2023-11-26 10:42:45,629 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 223 transitions. [2023-11-26 10:42:45,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 223 transitions. [2023-11-26 10:42:45,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:45,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 223 transitions. [2023-11-26 10:42:45,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 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) [2023-11-26 10:42:45,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 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) [2023-11-26 10:42:45,632 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 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) [2023-11-26 10:42:45,632 INFO L175 Difference]: Start difference. First operand has 89 places, 151 transitions, 1079 flow. Second operand 6 states and 223 transitions. [2023-11-26 10:42:45,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 177 transitions, 1496 flow [2023-11-26 10:42:45,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 177 transitions, 1458 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:42:45,647 INFO L231 Difference]: Finished difference. Result has 94 places, 141 transitions, 1105 flow [2023-11-26 10:42:45,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1105, PETRI_PLACES=94, PETRI_TRANSITIONS=141} [2023-11-26 10:42:45,649 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 35 predicate places. [2023-11-26 10:42:45,649 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 141 transitions, 1105 flow [2023-11-26 10:42:45,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2023-11-26 10:42:45,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:45,649 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-26 10:42:45,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:42:45,650 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:42:45,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:45,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1318634235, now seen corresponding path program 2 times [2023-11-26 10:42:45,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:45,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875197911] [2023-11-26 10:42:45,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:45,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:45,817 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:45,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:45,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875197911] [2023-11-26 10:42:45,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875197911] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:42:45,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3445999] [2023-11-26 10:42:45,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:42:45,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:45,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:45,820 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:45,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:42:45,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:42:45,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:42:45,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:42:45,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:42:46,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:42:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:42:46,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3445999] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:42:46,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:42:46,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-26 10:42:46,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272461358] [2023-11-26 10:42:46,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:42:46,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 10:42:46,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:46,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 10:42:46,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:42:46,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2023-11-26 10:42:46,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 141 transitions, 1105 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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) [2023-11-26 10:42:46,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:46,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2023-11-26 10:42:46,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:46,937 INFO L124 PetriNetUnfolderBase]: 1146/2116 cut-off events. [2023-11-26 10:42:46,937 INFO L125 PetriNetUnfolderBase]: For 2685/2715 co-relation queries the response was YES. [2023-11-26 10:42:46,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6207 conditions, 2116 events. 1146/2116 cut-off events. For 2685/2715 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11786 event pairs, 765 based on Foata normal form. 8/1973 useless extension candidates. Maximal degree in co-relation 5816. Up to 1569 conditions per place. [2023-11-26 10:42:46,959 INFO L140 encePairwiseOnDemand]: 44/61 looper letters, 48 selfloop transitions, 100 changer transitions 0/160 dead transitions. [2023-11-26 10:42:46,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 160 transitions, 1581 flow [2023-11-26 10:42:46,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-26 10:42:46,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-26 10:42:46,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 486 transitions. [2023-11-26 10:42:46,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3319672131147541 [2023-11-26 10:42:46,963 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 486 transitions. [2023-11-26 10:42:46,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 486 transitions. [2023-11-26 10:42:46,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:46,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 486 transitions. [2023-11-26 10:42:46,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 20.25) internal successors, (486), 24 states have internal predecessors, (486), 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) [2023-11-26 10:42:46,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 61.0) internal successors, (1525), 25 states have internal predecessors, (1525), 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) [2023-11-26 10:42:46,969 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 61.0) internal successors, (1525), 25 states have internal predecessors, (1525), 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) [2023-11-26 10:42:46,969 INFO L175 Difference]: Start difference. First operand has 94 places, 141 transitions, 1105 flow. Second operand 24 states and 486 transitions. [2023-11-26 10:42:46,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 160 transitions, 1581 flow [2023-11-26 10:42:46,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 160 transitions, 1362 flow, removed 9 selfloop flow, removed 11 redundant places. [2023-11-26 10:42:46,992 INFO L231 Difference]: Finished difference. Result has 103 places, 160 transitions, 1327 flow [2023-11-26 10:42:46,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1327, PETRI_PLACES=103, PETRI_TRANSITIONS=160} [2023-11-26 10:42:46,994 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 44 predicate places. [2023-11-26 10:42:46,994 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 160 transitions, 1327 flow [2023-11-26 10:42:46,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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) [2023-11-26 10:42:46,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:46,994 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2023-11-26 10:42:47,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:42:47,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:47,201 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:42:47,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:47,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2084642954, now seen corresponding path program 1 times [2023-11-26 10:42:47,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:47,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127370362] [2023-11-26 10:42:47,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:47,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:47,303 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 10:42:47,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:47,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127370362] [2023-11-26 10:42:47,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127370362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:47,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:47,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:42:47,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385174723] [2023-11-26 10:42:47,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:47,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:47,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:47,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:47,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:47,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 61 [2023-11-26 10:42:47,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 160 transitions, 1327 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2023-11-26 10:42:47,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:47,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 61 [2023-11-26 10:42:47,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:47,714 INFO L124 PetriNetUnfolderBase]: 1133/2049 cut-off events. [2023-11-26 10:42:47,714 INFO L125 PetriNetUnfolderBase]: For 1266/1288 co-relation queries the response was YES. [2023-11-26 10:42:47,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5258 conditions, 2049 events. 1133/2049 cut-off events. For 1266/1288 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11366 event pairs, 765 based on Foata normal form. 3/1816 useless extension candidates. Maximal degree in co-relation 5127. Up to 1589 conditions per place. [2023-11-26 10:42:47,734 INFO L140 encePairwiseOnDemand]: 50/61 looper letters, 77 selfloop transitions, 20 changer transitions 5/117 dead transitions. [2023-11-26 10:42:47,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 117 transitions, 1028 flow [2023-11-26 10:42:47,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:42:47,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:42:47,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2023-11-26 10:42:47,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6024590163934426 [2023-11-26 10:42:47,736 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 147 transitions. [2023-11-26 10:42:47,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 147 transitions. [2023-11-26 10:42:47,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:47,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 147 transitions. [2023-11-26 10:42:47,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2023-11-26 10:42:47,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-26 10:42:47,738 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 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) [2023-11-26 10:42:47,739 INFO L175 Difference]: Start difference. First operand has 103 places, 160 transitions, 1327 flow. Second operand 4 states and 147 transitions. [2023-11-26 10:42:47,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 117 transitions, 1028 flow [2023-11-26 10:42:47,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 117 transitions, 796 flow, removed 51 selfloop flow, removed 12 redundant places. [2023-11-26 10:42:47,748 INFO L231 Difference]: Finished difference. Result has 94 places, 112 transitions, 607 flow [2023-11-26 10:42:47,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=607, PETRI_PLACES=94, PETRI_TRANSITIONS=112} [2023-11-26 10:42:47,749 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 35 predicate places. [2023-11-26 10:42:47,749 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 112 transitions, 607 flow [2023-11-26 10:42:47,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2023-11-26 10:42:47,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:47,750 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:47,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 10:42:47,751 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:42:47,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:47,751 INFO L85 PathProgramCache]: Analyzing trace with hash 225398798, now seen corresponding path program 1 times [2023-11-26 10:42:47,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:47,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657042378] [2023-11-26 10:42:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:47,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:47,956 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:42:47,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:47,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657042378] [2023-11-26 10:42:47,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657042378] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:42:47,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971917289] [2023-11-26 10:42:47,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:47,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:47,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:47,961 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:47,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:42:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:48,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:42:48,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:48,258 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-26 10:42:48,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:42:48,410 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-26 10:42:48,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971917289] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:42:48,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:42:48,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-11-26 10:42:48,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707371161] [2023-11-26 10:42:48,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:42:48,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-26 10:42:48,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:48,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-26 10:42:48,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-11-26 10:42:48,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2023-11-26 10:42:48,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 112 transitions, 607 flow. Second operand has 21 states, 21 states have (on average 17.285714285714285) internal successors, (363), 21 states have internal predecessors, (363), 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) [2023-11-26 10:42:48,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:48,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2023-11-26 10:42:48,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:49,740 INFO L124 PetriNetUnfolderBase]: 2241/3959 cut-off events. [2023-11-26 10:42:49,740 INFO L125 PetriNetUnfolderBase]: For 2213/2324 co-relation queries the response was YES. [2023-11-26 10:42:49,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9917 conditions, 3959 events. 2241/3959 cut-off events. For 2213/2324 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 22184 event pairs, 1530 based on Foata normal form. 3/3510 useless extension candidates. Maximal degree in co-relation 9806. Up to 1564 conditions per place. [2023-11-26 10:42:49,776 INFO L140 encePairwiseOnDemand]: 48/61 looper letters, 63 selfloop transitions, 74 changer transitions 0/149 dead transitions. [2023-11-26 10:42:49,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 149 transitions, 1049 flow [2023-11-26 10:42:49,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 10:42:49,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 10:42:49,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 268 transitions. [2023-11-26 10:42:49,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39940387481371087 [2023-11-26 10:42:49,779 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 268 transitions. [2023-11-26 10:42:49,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 268 transitions. [2023-11-26 10:42:49,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:49,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 268 transitions. [2023-11-26 10:42:49,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 24.363636363636363) internal successors, (268), 11 states have internal predecessors, (268), 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) [2023-11-26 10:42:49,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 61.0) internal successors, (732), 12 states have internal predecessors, (732), 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) [2023-11-26 10:42:49,784 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 61.0) internal successors, (732), 12 states have internal predecessors, (732), 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) [2023-11-26 10:42:49,785 INFO L175 Difference]: Start difference. First operand has 94 places, 112 transitions, 607 flow. Second operand 11 states and 268 transitions. [2023-11-26 10:42:49,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 149 transitions, 1049 flow [2023-11-26 10:42:49,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 149 transitions, 912 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-26 10:42:49,797 INFO L231 Difference]: Finished difference. Result has 95 places, 121 transitions, 692 flow [2023-11-26 10:42:49,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=692, PETRI_PLACES=95, PETRI_TRANSITIONS=121} [2023-11-26 10:42:49,799 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 36 predicate places. [2023-11-26 10:42:49,799 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 121 transitions, 692 flow [2023-11-26 10:42:49,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.285714285714285) internal successors, (363), 21 states have internal predecessors, (363), 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) [2023-11-26 10:42:49,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:49,800 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:49,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:42:50,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 10:42:50,006 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:42:50,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:50,007 INFO L85 PathProgramCache]: Analyzing trace with hash -877138778, now seen corresponding path program 1 times [2023-11-26 10:42:50,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:50,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731898098] [2023-11-26 10:42:50,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:50,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:50,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:42:50,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:50,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731898098] [2023-11-26 10:42:50,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731898098] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:42:50,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239013679] [2023-11-26 10:42:50,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:50,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:50,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:50,153 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:50,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:42:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:50,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:42:50,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:50,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:42:50,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:50,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239013679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:50,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:42:50,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-26 10:42:50,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893846529] [2023-11-26 10:42:50,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:50,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:42:50,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:50,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:42:50,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:42:50,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-26 10:42:50,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 121 transitions, 692 flow. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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) [2023-11-26 10:42:50,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:50,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-26 10:42:50,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:51,049 INFO L124 PetriNetUnfolderBase]: 2553/4138 cut-off events. [2023-11-26 10:42:51,049 INFO L125 PetriNetUnfolderBase]: For 1917/2053 co-relation queries the response was YES. [2023-11-26 10:42:51,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10619 conditions, 4138 events. 2553/4138 cut-off events. For 1917/2053 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 21220 event pairs, 482 based on Foata normal form. 124/3650 useless extension candidates. Maximal degree in co-relation 10505. Up to 1289 conditions per place. [2023-11-26 10:42:51,086 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 164 selfloop transitions, 7 changer transitions 0/184 dead transitions. [2023-11-26 10:42:51,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 184 transitions, 1234 flow [2023-11-26 10:42:51,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:42:51,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:42:51,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2023-11-26 10:42:51,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6120218579234973 [2023-11-26 10:42:51,089 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 224 transitions. [2023-11-26 10:42:51,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 224 transitions. [2023-11-26 10:42:51,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:51,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 224 transitions. [2023-11-26 10:42:51,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 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) [2023-11-26 10:42:51,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 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) [2023-11-26 10:42:51,092 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 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) [2023-11-26 10:42:51,092 INFO L175 Difference]: Start difference. First operand has 95 places, 121 transitions, 692 flow. Second operand 6 states and 224 transitions. [2023-11-26 10:42:51,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 184 transitions, 1234 flow [2023-11-26 10:42:51,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 184 transitions, 1226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:42:51,105 INFO L231 Difference]: Finished difference. Result has 98 places, 120 transitions, 694 flow [2023-11-26 10:42:51,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=694, PETRI_PLACES=98, PETRI_TRANSITIONS=120} [2023-11-26 10:42:51,106 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 39 predicate places. [2023-11-26 10:42:51,106 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 120 transitions, 694 flow [2023-11-26 10:42:51,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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) [2023-11-26 10:42:51,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:51,107 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:51,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:42:51,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:51,317 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:42:51,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:51,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1421497524, now seen corresponding path program 1 times [2023-11-26 10:42:51,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:51,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792582198] [2023-11-26 10:42:51,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:51,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:51,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:42:51,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:51,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792582198] [2023-11-26 10:42:51,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792582198] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:42:51,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143302237] [2023-11-26 10:42:51,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:51,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:51,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:51,446 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:51,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:42:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:51,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:42:51,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:42:51,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:42:51,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:42:51,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143302237] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:42:51,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:42:51,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-26 10:42:51,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915353452] [2023-11-26 10:42:51,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:42:51,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:42:51,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:51,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:42:51,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:42:51,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-26 10:42:51,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 120 transitions, 694 flow. Second operand has 12 states, 12 states have (on average 24.25) internal successors, (291), 12 states have internal predecessors, (291), 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) [2023-11-26 10:42:51,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:51,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-26 10:42:51,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:53,322 INFO L124 PetriNetUnfolderBase]: 4797/7602 cut-off events. [2023-11-26 10:42:53,322 INFO L125 PetriNetUnfolderBase]: For 5761/6077 co-relation queries the response was YES. [2023-11-26 10:42:53,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21324 conditions, 7602 events. 4797/7602 cut-off events. For 5761/6077 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 40240 event pairs, 1146 based on Foata normal form. 372/6844 useless extension candidates. Maximal degree in co-relation 21209. Up to 3093 conditions per place. [2023-11-26 10:42:53,413 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 231 selfloop transitions, 13 changer transitions 0/257 dead transitions. [2023-11-26 10:42:53,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 257 transitions, 1644 flow [2023-11-26 10:42:53,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:42:53,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 10:42:53,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 375 transitions. [2023-11-26 10:42:53,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6147540983606558 [2023-11-26 10:42:53,419 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 375 transitions. [2023-11-26 10:42:53,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 375 transitions. [2023-11-26 10:42:53,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:53,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 375 transitions. [2023-11-26 10:42:53,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 37.5) internal successors, (375), 10 states have internal predecessors, (375), 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) [2023-11-26 10:42:53,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2023-11-26 10:42:53,427 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2023-11-26 10:42:53,428 INFO L175 Difference]: Start difference. First operand has 98 places, 120 transitions, 694 flow. Second operand 10 states and 375 transitions. [2023-11-26 10:42:53,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 257 transitions, 1644 flow [2023-11-26 10:42:53,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 257 transitions, 1598 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-26 10:42:53,457 INFO L231 Difference]: Finished difference. Result has 105 places, 129 transitions, 746 flow [2023-11-26 10:42:53,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=746, PETRI_PLACES=105, PETRI_TRANSITIONS=129} [2023-11-26 10:42:53,458 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 46 predicate places. [2023-11-26 10:42:53,459 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 129 transitions, 746 flow [2023-11-26 10:42:53,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.25) internal successors, (291), 12 states have internal predecessors, (291), 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) [2023-11-26 10:42:53,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:53,460 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 2, 2, 2, 1, 1, 1] [2023-11-26 10:42:53,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:42:53,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:53,667 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:42:53,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:53,668 INFO L85 PathProgramCache]: Analyzing trace with hash -619003382, now seen corresponding path program 2 times [2023-11-26 10:42:53,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:53,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482917696] [2023-11-26 10:42:53,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:53,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:54,196 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:54,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:54,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482917696] [2023-11-26 10:42:54,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482917696] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:42:54,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980138357] [2023-11-26 10:42:54,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:42:54,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:54,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:54,201 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:54,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:42:54,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:42:54,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:42:54,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:42:54,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:54,422 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 10:42:54,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:42:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 10:42:54,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980138357] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:42:54,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:42:54,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 3, 3] total 20 [2023-11-26 10:42:54,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132440264] [2023-11-26 10:42:54,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:42:54,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-26 10:42:54,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:54,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-26 10:42:54,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2023-11-26 10:42:54,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2023-11-26 10:42:54,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 129 transitions, 746 flow. Second operand has 21 states, 21 states have (on average 17.238095238095237) internal successors, (362), 21 states have internal predecessors, (362), 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) [2023-11-26 10:42:54,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:54,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2023-11-26 10:42:54,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:56,626 INFO L124 PetriNetUnfolderBase]: 4488/7481 cut-off events. [2023-11-26 10:42:56,626 INFO L125 PetriNetUnfolderBase]: For 7592/7788 co-relation queries the response was YES. [2023-11-26 10:42:56,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20622 conditions, 7481 events. 4488/7481 cut-off events. For 7592/7788 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 42520 event pairs, 3018 based on Foata normal form. 6/6749 useless extension candidates. Maximal degree in co-relation 20523. Up to 6074 conditions per place. [2023-11-26 10:42:56,696 INFO L140 encePairwiseOnDemand]: 45/61 looper letters, 37 selfloop transitions, 96 changer transitions 0/144 dead transitions. [2023-11-26 10:42:56,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 144 transitions, 1090 flow [2023-11-26 10:42:56,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-26 10:42:56,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-26 10:42:56,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 404 transitions. [2023-11-26 10:42:56,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485763589301122 [2023-11-26 10:42:56,699 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 404 transitions. [2023-11-26 10:42:56,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 404 transitions. [2023-11-26 10:42:56,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:56,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 404 transitions. [2023-11-26 10:42:56,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 21.263157894736842) internal successors, (404), 19 states have internal predecessors, (404), 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) [2023-11-26 10:42:56,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 61.0) internal successors, (1220), 20 states have internal predecessors, (1220), 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) [2023-11-26 10:42:56,706 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 61.0) internal successors, (1220), 20 states have internal predecessors, (1220), 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) [2023-11-26 10:42:56,706 INFO L175 Difference]: Start difference. First operand has 105 places, 129 transitions, 746 flow. Second operand 19 states and 404 transitions. [2023-11-26 10:42:56,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 144 transitions, 1090 flow [2023-11-26 10:42:56,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 144 transitions, 1023 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-26 10:42:56,736 INFO L231 Difference]: Finished difference. Result has 114 places, 144 transitions, 949 flow [2023-11-26 10:42:56,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=949, PETRI_PLACES=114, PETRI_TRANSITIONS=144} [2023-11-26 10:42:56,737 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 55 predicate places. [2023-11-26 10:42:56,737 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 144 transitions, 949 flow [2023-11-26 10:42:56,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.238095238095237) internal successors, (362), 21 states have internal predecessors, (362), 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) [2023-11-26 10:42:56,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:56,738 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:56,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:42:56,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:56,945 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:42:56,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:56,946 INFO L85 PathProgramCache]: Analyzing trace with hash 558037954, now seen corresponding path program 1 times [2023-11-26 10:42:56,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:56,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373564586] [2023-11-26 10:42:56,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:56,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:57,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:42:57,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:57,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373564586] [2023-11-26 10:42:57,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373564586] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:42:57,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467141958] [2023-11-26 10:42:57,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:57,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:57,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:57,150 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:57,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:42:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:57,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:42:57,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:57,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:42:57,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:57,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467141958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:57,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:42:57,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-26 10:42:57,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514231573] [2023-11-26 10:42:57,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:57,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:42:57,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:57,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:42:57,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:42:57,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-26 10:42:57,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 144 transitions, 949 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2023-11-26 10:42:57,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:57,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-26 10:42:57,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:58,731 INFO L124 PetriNetUnfolderBase]: 5176/7973 cut-off events. [2023-11-26 10:42:58,731 INFO L125 PetriNetUnfolderBase]: For 5507/5567 co-relation queries the response was YES. [2023-11-26 10:42:58,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21687 conditions, 7973 events. 5176/7973 cut-off events. For 5507/5567 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 41734 event pairs, 874 based on Foata normal form. 256/7190 useless extension candidates. Maximal degree in co-relation 21579. Up to 2131 conditions per place. [2023-11-26 10:42:58,780 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 227 selfloop transitions, 7 changer transitions 0/243 dead transitions. [2023-11-26 10:42:58,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 243 transitions, 1813 flow [2023-11-26 10:42:58,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:42:58,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:42:58,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2023-11-26 10:42:58,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6120218579234973 [2023-11-26 10:42:58,782 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 224 transitions. [2023-11-26 10:42:58,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 224 transitions. [2023-11-26 10:42:58,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:58,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 224 transitions. [2023-11-26 10:42:58,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 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) [2023-11-26 10:42:58,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 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) [2023-11-26 10:42:58,785 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 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) [2023-11-26 10:42:58,785 INFO L175 Difference]: Start difference. First operand has 114 places, 144 transitions, 949 flow. Second operand 6 states and 224 transitions. [2023-11-26 10:42:58,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 243 transitions, 1813 flow [2023-11-26 10:42:58,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 243 transitions, 1639 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-26 10:42:58,830 INFO L231 Difference]: Finished difference. Result has 108 places, 143 transitions, 785 flow [2023-11-26 10:42:58,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=785, PETRI_PLACES=108, PETRI_TRANSITIONS=143} [2023-11-26 10:42:58,831 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 49 predicate places. [2023-11-26 10:42:58,832 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 143 transitions, 785 flow [2023-11-26 10:42:58,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2023-11-26 10:42:58,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:58,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:58,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:42:59,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:59,037 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:42:59,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:59,038 INFO L85 PathProgramCache]: Analyzing trace with hash 284767352, now seen corresponding path program 1 times [2023-11-26 10:42:59,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:59,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436025244] [2023-11-26 10:42:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:59,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:59,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:42:59,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:59,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436025244] [2023-11-26 10:42:59,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436025244] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:42:59,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196388566] [2023-11-26 10:42:59,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:59,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:59,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:59,286 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:59,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 10:42:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:59,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:42:59,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:42:59,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:42:59,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:42:59,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196388566] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:42:59,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:42:59,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 18 [2023-11-26 10:42:59,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676120988] [2023-11-26 10:42:59,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:42:59,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-26 10:42:59,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:59,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-26 10:42:59,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-11-26 10:43:00,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2023-11-26 10:43:00,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 143 transitions, 785 flow. Second operand has 20 states, 20 states have (on average 16.75) internal successors, (335), 20 states have internal predecessors, (335), 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) [2023-11-26 10:43:00,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:00,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2023-11-26 10:43:00,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:01,833 INFO L124 PetriNetUnfolderBase]: 5106/7910 cut-off events. [2023-11-26 10:43:01,833 INFO L125 PetriNetUnfolderBase]: For 10187/10348 co-relation queries the response was YES. [2023-11-26 10:43:01,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23330 conditions, 7910 events. 5106/7910 cut-off events. For 10187/10348 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 41109 event pairs, 1974 based on Foata normal form. 0/6995 useless extension candidates. Maximal degree in co-relation 23237. Up to 2420 conditions per place. [2023-11-26 10:43:01,906 INFO L140 encePairwiseOnDemand]: 43/61 looper letters, 206 selfloop transitions, 66 changer transitions 12/293 dead transitions. [2023-11-26 10:43:01,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 293 transitions, 2052 flow [2023-11-26 10:43:01,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:43:01,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 10:43:01,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 352 transitions. [2023-11-26 10:43:01,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3846994535519126 [2023-11-26 10:43:01,911 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 352 transitions. [2023-11-26 10:43:01,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 352 transitions. [2023-11-26 10:43:01,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:01,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 352 transitions. [2023-11-26 10:43:01,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 23.466666666666665) internal successors, (352), 15 states have internal predecessors, (352), 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) [2023-11-26 10:43:01,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 61.0) internal successors, (976), 16 states have internal predecessors, (976), 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) [2023-11-26 10:43:01,918 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 61.0) internal successors, (976), 16 states have internal predecessors, (976), 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) [2023-11-26 10:43:01,918 INFO L175 Difference]: Start difference. First operand has 108 places, 143 transitions, 785 flow. Second operand 15 states and 352 transitions. [2023-11-26 10:43:01,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 293 transitions, 2052 flow [2023-11-26 10:43:01,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 293 transitions, 1920 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-26 10:43:02,068 INFO L231 Difference]: Finished difference. Result has 116 places, 146 transitions, 902 flow [2023-11-26 10:43:02,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=902, PETRI_PLACES=116, PETRI_TRANSITIONS=146} [2023-11-26 10:43:02,069 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 57 predicate places. [2023-11-26 10:43:02,069 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 146 transitions, 902 flow [2023-11-26 10:43:02,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.75) internal successors, (335), 20 states have internal predecessors, (335), 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) [2023-11-26 10:43:02,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:02,070 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:02,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-26 10:43:02,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:02,276 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:43:02,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:02,277 INFO L85 PathProgramCache]: Analyzing trace with hash 119308215, now seen corresponding path program 1 times [2023-11-26 10:43:02,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:02,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243033826] [2023-11-26 10:43:02,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:02,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:43:02,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:02,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243033826] [2023-11-26 10:43:02,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243033826] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:02,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12685363] [2023-11-26 10:43:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:02,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:02,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:02,429 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:02,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 10:43:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:02,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:43:02,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:43:02,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:02,670 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:43:02,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12685363] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:02,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:43:02,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-26 10:43:02,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794391968] [2023-11-26 10:43:02,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:02,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:43:02,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:02,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:43:02,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:43:02,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2023-11-26 10:43:02,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 146 transitions, 902 flow. Second operand has 12 states, 12 states have (on average 24.416666666666668) internal successors, (293), 12 states have internal predecessors, (293), 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) [2023-11-26 10:43:02,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:02,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2023-11-26 10:43:02,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:05,039 INFO L124 PetriNetUnfolderBase]: 11434/16983 cut-off events. [2023-11-26 10:43:05,039 INFO L125 PetriNetUnfolderBase]: For 16482/16676 co-relation queries the response was YES. [2023-11-26 10:43:05,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46761 conditions, 16983 events. 11434/16983 cut-off events. For 16482/16676 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 93962 event pairs, 2650 based on Foata normal form. 846/15395 useless extension candidates. Maximal degree in co-relation 46666. Up to 6679 conditions per place. [2023-11-26 10:43:05,137 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 382 selfloop transitions, 13 changer transitions 0/403 dead transitions. [2023-11-26 10:43:05,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 403 transitions, 2778 flow [2023-11-26 10:43:05,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:43:05,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 10:43:05,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 373 transitions. [2023-11-26 10:43:05,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6114754098360655 [2023-11-26 10:43:05,141 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 373 transitions. [2023-11-26 10:43:05,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 373 transitions. [2023-11-26 10:43:05,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:05,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 373 transitions. [2023-11-26 10:43:05,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 37.3) internal successors, (373), 10 states have internal predecessors, (373), 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) [2023-11-26 10:43:05,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2023-11-26 10:43:05,145 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2023-11-26 10:43:05,145 INFO L175 Difference]: Start difference. First operand has 116 places, 146 transitions, 902 flow. Second operand 10 states and 373 transitions. [2023-11-26 10:43:05,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 403 transitions, 2778 flow [2023-11-26 10:43:05,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 403 transitions, 2672 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-26 10:43:05,209 INFO L231 Difference]: Finished difference. Result has 118 places, 155 transitions, 870 flow [2023-11-26 10:43:05,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=870, PETRI_PLACES=118, PETRI_TRANSITIONS=155} [2023-11-26 10:43:05,210 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 59 predicate places. [2023-11-26 10:43:05,210 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 155 transitions, 870 flow [2023-11-26 10:43:05,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.416666666666668) internal successors, (293), 12 states have internal predecessors, (293), 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) [2023-11-26 10:43:05,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:05,211 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:05,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:05,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 10:43:05,417 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:43:05,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:05,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1664365187, now seen corresponding path program 2 times [2023-11-26 10:43:05,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:05,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132064075] [2023-11-26 10:43:05,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:05,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-26 10:43:05,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:05,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132064075] [2023-11-26 10:43:05,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132064075] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:05,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366732193] [2023-11-26 10:43:05,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:43:05,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:05,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:05,692 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:05,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 10:43:05,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:43:05,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:43:05,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:05,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-26 10:43:05,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:06,011 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-26 10:43:06,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366732193] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:06,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:43:06,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 10 [2023-11-26 10:43:06,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360500305] [2023-11-26 10:43:06,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:06,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 10:43:06,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:06,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:43:06,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:43:06,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2023-11-26 10:43:06,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 155 transitions, 870 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 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) [2023-11-26 10:43:06,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:06,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2023-11-26 10:43:06,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:08,216 INFO L124 PetriNetUnfolderBase]: 7850/12075 cut-off events. [2023-11-26 10:43:08,217 INFO L125 PetriNetUnfolderBase]: For 16774/16784 co-relation queries the response was YES. [2023-11-26 10:43:08,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36476 conditions, 12075 events. 7850/12075 cut-off events. For 16774/16784 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 64831 event pairs, 2722 based on Foata normal form. 268/11195 useless extension candidates. Maximal degree in co-relation 36380. Up to 5029 conditions per place. [2023-11-26 10:43:08,315 INFO L140 encePairwiseOnDemand]: 43/61 looper letters, 180 selfloop transitions, 67 changer transitions 30/285 dead transitions. [2023-11-26 10:43:08,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 285 transitions, 2028 flow [2023-11-26 10:43:08,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:43:08,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 10:43:08,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 333 transitions. [2023-11-26 10:43:08,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38992974238875877 [2023-11-26 10:43:08,319 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 333 transitions. [2023-11-26 10:43:08,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 333 transitions. [2023-11-26 10:43:08,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:08,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 333 transitions. [2023-11-26 10:43:08,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 23.785714285714285) internal successors, (333), 14 states have internal predecessors, (333), 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) [2023-11-26 10:43:08,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 61.0) internal successors, (915), 15 states have internal predecessors, (915), 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) [2023-11-26 10:43:08,325 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 61.0) internal successors, (915), 15 states have internal predecessors, (915), 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) [2023-11-26 10:43:08,325 INFO L175 Difference]: Start difference. First operand has 118 places, 155 transitions, 870 flow. Second operand 14 states and 333 transitions. [2023-11-26 10:43:08,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 285 transitions, 2028 flow [2023-11-26 10:43:08,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 285 transitions, 1950 flow, removed 19 selfloop flow, removed 6 redundant places. [2023-11-26 10:43:08,443 INFO L231 Difference]: Finished difference. Result has 127 places, 154 transitions, 988 flow [2023-11-26 10:43:08,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=988, PETRI_PLACES=127, PETRI_TRANSITIONS=154} [2023-11-26 10:43:08,444 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 68 predicate places. [2023-11-26 10:43:08,444 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 154 transitions, 988 flow [2023-11-26 10:43:08,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 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) [2023-11-26 10:43:08,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:08,445 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:08,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:08,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:08,653 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-26 10:43:08,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:08,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1210639103, now seen corresponding path program 2 times [2023-11-26 10:43:08,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:08,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418150843] [2023-11-26 10:43:08,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:08,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-26 10:43:09,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:09,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418150843] [2023-11-26 10:43:09,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418150843] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:09,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218251930] [2023-11-26 10:43:09,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:43:09,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:09,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:09,061 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:09,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 10:43:09,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:43:09,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:43:09,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:09,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-26 10:43:09,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-26 10:43:09,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218251930] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:09,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:43:09,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 2, 2] total 11 [2023-11-26 10:43:09,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911781700] [2023-11-26 10:43:09,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:09,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:43:09,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:09,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:43:09,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:43:09,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2023-11-26 10:43:09,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 154 transitions, 988 flow. Second operand has 12 states, 12 states have (on average 17.666666666666668) internal successors, (212), 12 states have internal predecessors, (212), 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) [2023-11-26 10:43:09,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:09,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2023-11-26 10:43:09,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:11,312 INFO L124 PetriNetUnfolderBase]: 5414/8563 cut-off events. [2023-11-26 10:43:11,313 INFO L125 PetriNetUnfolderBase]: For 13672/13672 co-relation queries the response was YES. [2023-11-26 10:43:11,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26462 conditions, 8563 events. 5414/8563 cut-off events. For 13672/13672 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 46448 event pairs, 1914 based on Foata normal form. 212/8151 useless extension candidates. Maximal degree in co-relation 26364. Up to 3677 conditions per place. [2023-11-26 10:43:11,331 INFO L140 encePairwiseOnDemand]: 44/61 looper letters, 0 selfloop transitions, 0 changer transitions 233/233 dead transitions. [2023-11-26 10:43:11,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 233 transitions, 1787 flow [2023-11-26 10:43:11,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:43:11,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 10:43:11,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 330 transitions. [2023-11-26 10:43:11,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3864168618266979 [2023-11-26 10:43:11,334 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 330 transitions. [2023-11-26 10:43:11,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 330 transitions. [2023-11-26 10:43:11,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:11,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 330 transitions. [2023-11-26 10:43:11,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 23.571428571428573) internal successors, (330), 14 states have internal predecessors, (330), 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) [2023-11-26 10:43:11,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 61.0) internal successors, (915), 15 states have internal predecessors, (915), 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) [2023-11-26 10:43:11,338 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 61.0) internal successors, (915), 15 states have internal predecessors, (915), 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) [2023-11-26 10:43:11,338 INFO L175 Difference]: Start difference. First operand has 127 places, 154 transitions, 988 flow. Second operand 14 states and 330 transitions. [2023-11-26 10:43:11,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 233 transitions, 1787 flow [2023-11-26 10:43:11,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 233 transitions, 1695 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-11-26 10:43:11,395 INFO L231 Difference]: Finished difference. Result has 127 places, 0 transitions, 0 flow [2023-11-26 10:43:11,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=127, PETRI_TRANSITIONS=0} [2023-11-26 10:43:11,396 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 68 predicate places. [2023-11-26 10:43:11,396 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 0 transitions, 0 flow [2023-11-26 10:43:11,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.666666666666668) internal successors, (212), 12 states have internal predecessors, (212), 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) [2023-11-26 10:43:11,399 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 23 remaining) [2023-11-26 10:43:11,399 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-11-26 10:43:11,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-11-26 10:43:11,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-11-26 10:43:11,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-11-26 10:43:11,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-11-26 10:43:11,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-11-26 10:43:11,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-11-26 10:43:11,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-11-26 10:43:11,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-11-26 10:43:11,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-11-26 10:43:11,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-11-26 10:43:11,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-11-26 10:43:11,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-11-26 10:43:11,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 23 remaining) [2023-11-26 10:43:11,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 23 remaining) [2023-11-26 10:43:11,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 23 remaining) [2023-11-26 10:43:11,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-11-26 10:43:11,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-11-26 10:43:11,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-11-26 10:43:11,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-11-26 10:43:11,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-11-26 10:43:11,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-11-26 10:43:11,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:11,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-11-26 10:43:11,613 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:11,619 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 10:43:11,619 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:43:11,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:43:11 BasicIcfg [2023-11-26 10:43:11,626 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:43:11,627 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:43:11,627 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:43:11,627 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:43:11,628 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:38" (3/4) ... [2023-11-26 10:43:11,629 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 10:43:11,633 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-26 10:43:11,633 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-26 10:43:11,633 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-26 10:43:11,658 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 204 nodes and edges [2023-11-26 10:43:11,659 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2023-11-26 10:43:11,660 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-26 10:43:11,661 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 10:43:11,809 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:43:11,809 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 10:43:11,810 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:43:11,810 INFO L158 Benchmark]: Toolchain (without parser) took 35225.36ms. Allocated memory was 115.3MB in the beginning and 5.2GB in the end (delta: 5.1GB). Free memory was 76.0MB in the beginning and 4.7GB in the end (delta: -4.6GB). Peak memory consumption was 474.9MB. Max. memory is 16.1GB. [2023-11-26 10:43:11,811 INFO L158 Benchmark]: CDTParser took 1.27ms. Allocated memory is still 115.3MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:43:11,811 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.36ms. Allocated memory is still 115.3MB. Free memory was 75.7MB in the beginning and 63.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 10:43:11,811 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.31ms. Allocated memory is still 115.3MB. Free memory was 63.7MB in the beginning and 61.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:43:11,812 INFO L158 Benchmark]: Boogie Preprocessor took 86.79ms. Allocated memory is still 115.3MB. Free memory was 61.3MB in the beginning and 58.3MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:43:11,812 INFO L158 Benchmark]: RCFGBuilder took 1308.97ms. Allocated memory was 115.3MB in the beginning and 146.8MB in the end (delta: 31.5MB). Free memory was 58.0MB in the beginning and 99.4MB in the end (delta: -41.3MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2023-11-26 10:43:11,813 INFO L158 Benchmark]: TraceAbstraction took 33310.09ms. Allocated memory was 146.8MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 98.3MB in the beginning and 4.7GB in the end (delta: -4.6GB). Peak memory consumption was 695.7MB. Max. memory is 16.1GB. [2023-11-26 10:43:11,813 INFO L158 Benchmark]: Witness Printer took 182.85ms. Allocated memory is still 5.2GB. Free memory was 4.7GB in the beginning and 4.7GB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-26 10:43:11,816 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.27ms. Allocated memory is still 115.3MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.36ms. Allocated memory is still 115.3MB. Free memory was 75.7MB in the beginning and 63.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.31ms. Allocated memory is still 115.3MB. Free memory was 63.7MB in the beginning and 61.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 86.79ms. Allocated memory is still 115.3MB. Free memory was 61.3MB in the beginning and 58.3MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1308.97ms. Allocated memory was 115.3MB in the beginning and 146.8MB in the end (delta: 31.5MB). Free memory was 58.0MB in the beginning and 99.4MB in the end (delta: -41.3MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. * TraceAbstraction took 33310.09ms. Allocated memory was 146.8MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 98.3MB in the beginning and 4.7GB in the end (delta: -4.6GB). Peak memory consumption was 695.7MB. Max. memory is 16.1GB. * Witness Printer took 182.85ms. Allocated memory is still 5.2GB. Free memory was 4.7GB in the beginning and 4.7GB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 79 locations, 23 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: 33.2s, OverallIterations: 20, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 23.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2323 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2179 mSDsluCounter, 1861 SdHoareTripleChecker+Invalid, 5.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1769 mSDsCounter, 633 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7301 IncrementalHoareTripleChecker+Invalid, 7934 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 633 mSolverCounterUnsat, 92 mSDtfsCounter, 7301 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 678 GetRequests, 422 SyntacticMatches, 5 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1327occurred in iteration=10, InterpolantAutomatonStates: 183, 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: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 640 NumberOfCodeBlocks, 559 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 820 ConstructedInterpolants, 0 QuantifiedInterpolants, 2174 SizeOfPredicates, 39 NumberOfNonLiveVariables, 2286 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 40 InterpolantComputations, 11 PerfectInterpolantSequences, 538/718 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 10:43:11,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9692eeed-d7a2-444c-af28-71dda7a89fb1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE