./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu --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 e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:49:36,377 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:49:36,498 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:49:36,512 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:49:36,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:49:36,555 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:49:36,557 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:49:36,558 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:49:36,560 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:49:36,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:49:36,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:49:36,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:49:36,567 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:49:36,569 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:49:36,570 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:49:36,570 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:49:36,571 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:49:36,571 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:49:36,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:49:36,572 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:49:36,573 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:49:36,574 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:49:36,574 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:49:36,575 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:49:36,575 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:49:36,576 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:49:36,576 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:49:36,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:49:36,578 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:49:36,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:49:36,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:36,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:49:36,597 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:49:36,597 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:49:36,598 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:49:36,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:49:36,598 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:49:36,599 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:49:36,599 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:49:36,600 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:49:36,600 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:49:36,601 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_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2023-11-19 07:49:36,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:49:36,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:49:36,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:49:36,960 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:49:36,960 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:49:36,962 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-19 07:49:40,261 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:49:40,503 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:49:40,504 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-19 07:49:40,514 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/data/9685b8e59/461ed9fa290f41e3afbf442fec3951a9/FLAG88df8db80 [2023-11-19 07:49:40,530 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/data/9685b8e59/461ed9fa290f41e3afbf442fec3951a9 [2023-11-19 07:49:40,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:49:40,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:49:40,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:40,537 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:49:40,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:49:40,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:40" (1/1) ... [2023-11-19 07:49:40,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23233b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:40, skipping insertion in model container [2023-11-19 07:49:40,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:40" (1/1) ... [2023-11-19 07:49:40,577 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:49:40,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:40,826 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:49:40,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:40,878 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:49:40,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:40 WrapperNode [2023-11-19 07:49:40,879 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:40,880 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:40,880 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:49:40,880 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:49:40,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:40" (1/1) ... [2023-11-19 07:49:40,900 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:40" (1/1) ... [2023-11-19 07:49:40,935 INFO L138 Inliner]: procedures = 24, calls = 47, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 220 [2023-11-19 07:49:40,935 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:40,936 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:49:40,936 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:49:40,936 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:49:40,948 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:40" (1/1) ... [2023-11-19 07:49:40,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:40" (1/1) ... [2023-11-19 07:49:40,954 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:40" (1/1) ... [2023-11-19 07:49:40,954 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:40" (1/1) ... [2023-11-19 07:49:40,972 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:40" (1/1) ... [2023-11-19 07:49:40,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:40" (1/1) ... [2023-11-19 07:49:40,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:40" (1/1) ... [2023-11-19 07:49:41,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:40" (1/1) ... [2023-11-19 07:49:41,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:49:41,015 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:49:41,015 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:49:41,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:49:41,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:40" (1/1) ... [2023-11-19 07:49:41,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:41,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:41,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:49:41,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:49:41,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:49:41,089 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:49:41,090 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:49:41,090 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:49:41,090 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:49:41,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:49:41,091 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:49:41,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:49:41,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:49:41,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:49:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:49:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:49:41,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:49:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:49:41,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:49:41,097 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:49:41,292 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:49:41,294 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:49:41,904 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:49:41,923 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:49:41,936 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 07:49:41,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:41 BoogieIcfgContainer [2023-11-19 07:49:41,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:49:41,949 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:49:41,951 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:49:41,955 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:49:41,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:49:40" (1/3) ... [2023-11-19 07:49:41,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d49d00d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:41, skipping insertion in model container [2023-11-19 07:49:41,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:40" (2/3) ... [2023-11-19 07:49:41,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d49d00d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:41, skipping insertion in model container [2023-11-19 07:49:41,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:41" (3/3) ... [2023-11-19 07:49:41,960 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2023-11-19 07:49:41,982 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:49:41,992 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:49:41,993 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-19 07:49:41,993 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:49:42,132 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:49:42,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 320 places, 340 transitions, 701 flow [2023-11-19 07:49:42,407 INFO L124 PetriNetUnfolderBase]: 30/337 cut-off events. [2023-11-19 07:49:42,407 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:49:42,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 337 events. 30/337 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 337 event pairs, 0 based on Foata normal form. 0/295 useless extension candidates. Maximal degree in co-relation 228. Up to 3 conditions per place. [2023-11-19 07:49:42,418 INFO L82 GeneralOperation]: Start removeDead. Operand has 320 places, 340 transitions, 701 flow [2023-11-19 07:49:42,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 255 transitions, 525 flow [2023-11-19 07:49:42,439 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:49:42,462 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 255 transitions, 525 flow [2023-11-19 07:49:42,472 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 255 transitions, 525 flow [2023-11-19 07:49:42,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 255 transitions, 525 flow [2023-11-19 07:49:42,582 INFO L124 PetriNetUnfolderBase]: 21/255 cut-off events. [2023-11-19 07:49:42,582 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:49:42,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 255 events. 21/255 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 281 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 228. Up to 3 conditions per place. [2023-11-19 07:49:42,592 INFO L119 LiptonReduction]: Number of co-enabled transitions 4158 [2023-11-19 07:49:53,715 INFO L134 LiptonReduction]: Checked pairs total: 6563 [2023-11-19 07:49:53,715 INFO L136 LiptonReduction]: Total number of compositions: 292 [2023-11-19 07:49:53,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:49:53,741 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;@5e05ef29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:49:53,741 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-19 07:49:53,744 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:49:53,744 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:49:53,745 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:49:53,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:53,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:49:53,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:49:53,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:53,752 INFO L85 PathProgramCache]: Analyzing trace with hash 38311, now seen corresponding path program 1 times [2023-11-19 07:49:53,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:53,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417309724] [2023-11-19 07:49:53,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:53,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:54,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:54,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:54,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417309724] [2023-11-19 07:49:54,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417309724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:54,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:54,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:49:54,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939872546] [2023-11-19 07:49:54,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:54,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:54,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:54,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:54,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:54,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 632 [2023-11-19 07:49:54,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 303.6666666666667) internal successors, (911), 3 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:54,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:54,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 632 [2023-11-19 07:49:54,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:54,743 INFO L124 PetriNetUnfolderBase]: 1617/2144 cut-off events. [2023-11-19 07:49:54,744 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2023-11-19 07:49:54,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4392 conditions, 2144 events. 1617/2144 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 8681 event pairs, 873 based on Foata normal form. 0/933 useless extension candidates. Maximal degree in co-relation 3786. Up to 2118 conditions per place. [2023-11-19 07:49:54,772 INFO L140 encePairwiseOnDemand]: 619/632 looper letters, 38 selfloop transitions, 7 changer transitions 0/48 dead transitions. [2023-11-19 07:49:54,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 201 flow [2023-11-19 07:49:54,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:54,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:49:54,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 960 transitions. [2023-11-19 07:49:54,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063291139240507 [2023-11-19 07:49:54,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 960 transitions. [2023-11-19 07:49:54,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 960 transitions. [2023-11-19 07:49:54,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:54,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 960 transitions. [2023-11-19 07:49:54,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:54,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:54,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:54,842 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 99 flow. Second operand 3 states and 960 transitions. [2023-11-19 07:49:54,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 201 flow [2023-11-19 07:49:54,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 48 transitions, 192 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:49:54,856 INFO L231 Difference]: Finished difference. Result has 43 places, 48 transitions, 154 flow [2023-11-19 07:49:54,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=43, PETRI_TRANSITIONS=48} [2023-11-19 07:49:54,863 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -1 predicate places. [2023-11-19 07:49:54,864 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 48 transitions, 154 flow [2023-11-19 07:49:54,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 303.6666666666667) internal successors, (911), 3 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:54,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:54,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:49:54,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:49:54,866 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:49:54,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:54,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1189310, now seen corresponding path program 1 times [2023-11-19 07:49:54,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:54,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750349903] [2023-11-19 07:49:54,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:54,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:55,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:55,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750349903] [2023-11-19 07:49:55,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750349903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:55,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:55,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:49:55,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165738612] [2023-11-19 07:49:55,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:55,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:55,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:55,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:55,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:55,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 632 [2023-11-19 07:49:55,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 48 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 304.0) internal successors, (912), 3 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:55,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:55,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 632 [2023-11-19 07:49:55,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:55,430 INFO L124 PetriNetUnfolderBase]: 1617/2141 cut-off events. [2023-11-19 07:49:55,431 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-19 07:49:55,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4366 conditions, 2141 events. 1617/2141 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 8617 event pairs, 873 based on Foata normal form. 0/937 useless extension candidates. Maximal degree in co-relation 4307. Up to 2106 conditions per place. [2023-11-19 07:49:55,452 INFO L140 encePairwiseOnDemand]: 627/632 looper letters, 39 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-11-19 07:49:55,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 226 flow [2023-11-19 07:49:55,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:49:55,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 948 transitions. [2023-11-19 07:49:55,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-19 07:49:55,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 948 transitions. [2023-11-19 07:49:55,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 948 transitions. [2023-11-19 07:49:55,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:55,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 948 transitions. [2023-11-19 07:49:55,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:55,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:55,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:55,475 INFO L175 Difference]: Start difference. First operand has 43 places, 48 transitions, 154 flow. Second operand 3 states and 948 transitions. [2023-11-19 07:49:55,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 226 flow [2023-11-19 07:49:55,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:49:55,480 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 134 flow [2023-11-19 07:49:55,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2023-11-19 07:49:55,482 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -4 predicate places. [2023-11-19 07:49:55,482 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 134 flow [2023-11-19 07:49:55,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.0) internal successors, (912), 3 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:55,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:55,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:49:55,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:49:55,491 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:49:55,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:55,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1189329, now seen corresponding path program 1 times [2023-11-19 07:49:55,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:55,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273666732] [2023-11-19 07:49:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:55,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:55,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:55,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273666732] [2023-11-19 07:49:55,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273666732] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:55,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436829470] [2023-11-19 07:49:55,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:55,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:55,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:55,637 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:55,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:49:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:55,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:49:55,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:55,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:55,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:55,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436829470] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:49:55,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:49:55,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 07:49:55,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458824797] [2023-11-19 07:49:55,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:55,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:49:55,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:55,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:49:55,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:55,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 632 [2023-11-19 07:49:55,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 134 flow. Second operand has 7 states, 7 states have (on average 304.14285714285717) internal successors, (2129), 7 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:55,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:55,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 632 [2023-11-19 07:49:55,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:56,325 INFO L124 PetriNetUnfolderBase]: 1626/2159 cut-off events. [2023-11-19 07:49:56,326 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-19 07:49:56,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4419 conditions, 2159 events. 1626/2159 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 8707 event pairs, 873 based on Foata normal form. 0/947 useless extension candidates. Maximal degree in co-relation 4307. Up to 2118 conditions per place. [2023-11-19 07:49:56,346 INFO L140 encePairwiseOnDemand]: 622/632 looper letters, 35 selfloop transitions, 25 changer transitions 0/63 dead transitions. [2023-11-19 07:49:56,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 63 transitions, 332 flow [2023-11-19 07:49:56,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:56,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:49:56,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1887 transitions. [2023-11-19 07:49:56,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.497626582278481 [2023-11-19 07:49:56,354 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1887 transitions. [2023-11-19 07:49:56,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1887 transitions. [2023-11-19 07:49:56,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:56,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1887 transitions. [2023-11-19 07:49:56,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 314.5) internal successors, (1887), 6 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:56,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 632.0) internal successors, (4424), 7 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:56,375 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 632.0) internal successors, (4424), 7 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:56,375 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 134 flow. Second operand 6 states and 1887 transitions. [2023-11-19 07:49:56,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 63 transitions, 332 flow [2023-11-19 07:49:56,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 63 transitions, 320 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:49:56,381 INFO L231 Difference]: Finished difference. Result has 46 places, 63 transitions, 303 flow [2023-11-19 07:49:56,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=46, PETRI_TRANSITIONS=63} [2023-11-19 07:49:56,383 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2023-11-19 07:49:56,383 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 63 transitions, 303 flow [2023-11-19 07:49:56,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 304.14285714285717) internal successors, (2129), 7 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:56,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:56,385 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 07:49:56,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:56,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:56,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:49:56,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:56,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1072653178, now seen corresponding path program 2 times [2023-11-19 07:49:56,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:56,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686574914] [2023-11-19 07:49:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:56,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:56,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:56,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686574914] [2023-11-19 07:49:56,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686574914] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:56,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501487721] [2023-11-19 07:49:56,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:49:56,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:56,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:56,719 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:56,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:49:56,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:49:56,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:49:56,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:49:56,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:49:56,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:56,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501487721] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:56,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:56,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 07:49:56,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337236065] [2023-11-19 07:49:56,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:56,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:56,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:56,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:56,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:49:56,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 632 [2023-11-19 07:49:56,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 63 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:56,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:56,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 632 [2023-11-19 07:49:56,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:57,182 INFO L124 PetriNetUnfolderBase]: 1626/2158 cut-off events. [2023-11-19 07:49:57,182 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-19 07:49:57,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4466 conditions, 2158 events. 1626/2158 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 8676 event pairs, 873 based on Foata normal form. 1/954 useless extension candidates. Maximal degree in co-relation 4378. Up to 2131 conditions per place. [2023-11-19 07:49:57,200 INFO L140 encePairwiseOnDemand]: 629/632 looper letters, 53 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2023-11-19 07:49:57,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 411 flow [2023-11-19 07:49:57,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:57,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:49:57,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 963 transitions. [2023-11-19 07:49:57,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079113924050633 [2023-11-19 07:49:57,205 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 963 transitions. [2023-11-19 07:49:57,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 963 transitions. [2023-11-19 07:49:57,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:57,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 963 transitions. [2023-11-19 07:49:57,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 321.0) internal successors, (963), 3 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:57,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:57,220 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:57,220 INFO L175 Difference]: Start difference. First operand has 46 places, 63 transitions, 303 flow. Second operand 3 states and 963 transitions. [2023-11-19 07:49:57,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 411 flow [2023-11-19 07:49:57,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 374 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-19 07:49:57,227 INFO L231 Difference]: Finished difference. Result has 46 places, 62 transitions, 268 flow [2023-11-19 07:49:57,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=46, PETRI_TRANSITIONS=62} [2023-11-19 07:49:57,230 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2023-11-19 07:49:57,230 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 62 transitions, 268 flow [2023-11-19 07:49:57,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:57,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:57,231 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-19 07:49:57,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:57,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:57,454 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:49:57,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:57,455 INFO L85 PathProgramCache]: Analyzing trace with hash -40575768, now seen corresponding path program 1 times [2023-11-19 07:49:57,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:57,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902051783] [2023-11-19 07:49:57,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:57,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:57,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:57,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902051783] [2023-11-19 07:49:57,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902051783] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:57,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468410689] [2023-11-19 07:49:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:57,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:57,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:57,609 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:57,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:49:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:57,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:49:57,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:57,743 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:57,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:57,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468410689] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:49:57,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:49:57,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:49:57,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212019236] [2023-11-19 07:49:57,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:57,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:49:57,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:57,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:49:57,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:49:58,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 632 [2023-11-19 07:49:58,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 62 transitions, 268 flow. Second operand has 13 states, 13 states have (on average 304.15384615384613) internal successors, (3954), 13 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:58,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:58,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 632 [2023-11-19 07:49:58,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:58,515 INFO L124 PetriNetUnfolderBase]: 1644/2194 cut-off events. [2023-11-19 07:49:58,516 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-11-19 07:49:58,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4590 conditions, 2194 events. 1644/2194 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 8913 event pairs, 873 based on Foata normal form. 12/992 useless extension candidates. Maximal degree in co-relation 4487. Up to 2123 conditions per place. [2023-11-19 07:49:58,537 INFO L140 encePairwiseOnDemand]: 623/632 looper letters, 34 selfloop transitions, 61 changer transitions 0/98 dead transitions. [2023-11-19 07:49:58,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 98 transitions, 674 flow [2023-11-19 07:49:58,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:49:58,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:49:58,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3743 transitions. [2023-11-19 07:49:58,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.493539029535865 [2023-11-19 07:49:58,553 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3743 transitions. [2023-11-19 07:49:58,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3743 transitions. [2023-11-19 07:49:58,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:58,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3743 transitions. [2023-11-19 07:49:58,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 311.9166666666667) internal successors, (3743), 12 states have internal predecessors, (3743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:58,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 632.0) internal successors, (8216), 13 states have internal predecessors, (8216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:58,591 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 632.0) internal successors, (8216), 13 states have internal predecessors, (8216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:58,591 INFO L175 Difference]: Start difference. First operand has 46 places, 62 transitions, 268 flow. Second operand 12 states and 3743 transitions. [2023-11-19 07:49:58,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 98 transitions, 674 flow [2023-11-19 07:49:58,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 98 transitions, 650 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:49:58,598 INFO L231 Difference]: Finished difference. Result has 61 places, 98 transitions, 668 flow [2023-11-19 07:49:58,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=668, PETRI_PLACES=61, PETRI_TRANSITIONS=98} [2023-11-19 07:49:58,601 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 17 predicate places. [2023-11-19 07:49:58,602 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 98 transitions, 668 flow [2023-11-19 07:49:58,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 304.15384615384613) internal successors, (3954), 13 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:58,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:58,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:58,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:58,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:58,821 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:49:58,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:58,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1375963674, now seen corresponding path program 1 times [2023-11-19 07:49:58,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:58,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939104449] [2023-11-19 07:49:58,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:58,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:58,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:58,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939104449] [2023-11-19 07:49:58,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939104449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:58,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:58,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:49:58,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206949323] [2023-11-19 07:49:58,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:58,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:58,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:58,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:58,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:58,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 632 [2023-11-19 07:49:58,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 98 transitions, 668 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:58,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:58,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 632 [2023-11-19 07:49:58,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:59,415 INFO L124 PetriNetUnfolderBase]: 2378/3147 cut-off events. [2023-11-19 07:49:59,416 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-11-19 07:49:59,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6638 conditions, 3147 events. 2378/3147 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 13619 event pairs, 470 based on Foata normal form. 0/1419 useless extension candidates. Maximal degree in co-relation 6520. Up to 1957 conditions per place. [2023-11-19 07:49:59,446 INFO L140 encePairwiseOnDemand]: 628/632 looper letters, 116 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2023-11-19 07:49:59,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 121 transitions, 955 flow [2023-11-19 07:49:59,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:59,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:49:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1008 transitions. [2023-11-19 07:49:59,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5316455696202531 [2023-11-19 07:49:59,451 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1008 transitions. [2023-11-19 07:49:59,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1008 transitions. [2023-11-19 07:49:59,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:59,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1008 transitions. [2023-11-19 07:49:59,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:59,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:59,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:59,461 INFO L175 Difference]: Start difference. First operand has 61 places, 98 transitions, 668 flow. Second operand 3 states and 1008 transitions. [2023-11-19 07:49:59,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 121 transitions, 955 flow [2023-11-19 07:49:59,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 121 transitions, 777 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-11-19 07:49:59,468 INFO L231 Difference]: Finished difference. Result has 59 places, 99 transitions, 504 flow [2023-11-19 07:49:59,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=59, PETRI_TRANSITIONS=99} [2023-11-19 07:49:59,469 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 15 predicate places. [2023-11-19 07:49:59,469 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 99 transitions, 504 flow [2023-11-19 07:49:59,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:59,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:59,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:59,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:49:59,471 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:49:59,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:59,471 INFO L85 PathProgramCache]: Analyzing trace with hash 805655619, now seen corresponding path program 1 times [2023-11-19 07:49:59,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:59,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007399438] [2023-11-19 07:49:59,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:59,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:59,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:59,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:59,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007399438] [2023-11-19 07:49:59,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007399438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:59,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:59,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:49:59,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466071646] [2023-11-19 07:49:59,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:59,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:59,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:59,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:59,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:59,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 632 [2023-11-19 07:49:59,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 99 transitions, 504 flow. Second operand has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:59,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:59,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 632 [2023-11-19 07:49:59,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:00,274 INFO L124 PetriNetUnfolderBase]: 3072/4096 cut-off events. [2023-11-19 07:50:00,275 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-11-19 07:50:00,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8947 conditions, 4096 events. 3072/4096 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 18544 event pairs, 608 based on Foata normal form. 0/2070 useless extension candidates. Maximal degree in co-relation 8850. Up to 2639 conditions per place. [2023-11-19 07:50:00,307 INFO L140 encePairwiseOnDemand]: 628/632 looper letters, 116 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2023-11-19 07:50:00,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 121 transitions, 797 flow [2023-11-19 07:50:00,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:00,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:50:00,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1006 transitions. [2023-11-19 07:50:00,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5305907172995781 [2023-11-19 07:50:00,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1006 transitions. [2023-11-19 07:50:00,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1006 transitions. [2023-11-19 07:50:00,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:00,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1006 transitions. [2023-11-19 07:50:00,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 335.3333333333333) internal successors, (1006), 3 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:00,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:00,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:00,322 INFO L175 Difference]: Start difference. First operand has 59 places, 99 transitions, 504 flow. Second operand 3 states and 1006 transitions. [2023-11-19 07:50:00,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 121 transitions, 797 flow [2023-11-19 07:50:00,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 121 transitions, 794 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:50:00,329 INFO L231 Difference]: Finished difference. Result has 61 places, 100 transitions, 516 flow [2023-11-19 07:50:00,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=516, PETRI_PLACES=61, PETRI_TRANSITIONS=100} [2023-11-19 07:50:00,331 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 17 predicate places. [2023-11-19 07:50:00,331 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 100 transitions, 516 flow [2023-11-19 07:50:00,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:00,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:00,332 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:00,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:50:00,332 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:50:00,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:00,333 INFO L85 PathProgramCache]: Analyzing trace with hash 548933550, now seen corresponding path program 1 times [2023-11-19 07:50:00,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:00,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009091997] [2023-11-19 07:50:00,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:00,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:50:00,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:00,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009091997] [2023-11-19 07:50:00,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009091997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:00,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:00,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:50:00,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458461304] [2023-11-19 07:50:00,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:00,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:00,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:00,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:00,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:00,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 632 [2023-11-19 07:50:00,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 100 transitions, 516 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:00,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:00,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 632 [2023-11-19 07:50:00,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:01,261 INFO L124 PetriNetUnfolderBase]: 3675/4971 cut-off events. [2023-11-19 07:50:01,261 INFO L125 PetriNetUnfolderBase]: For 594/594 co-relation queries the response was YES. [2023-11-19 07:50:01,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11440 conditions, 4971 events. 3675/4971 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 23646 event pairs, 2150 based on Foata normal form. 0/2863 useless extension candidates. Maximal degree in co-relation 11279. Up to 4073 conditions per place. [2023-11-19 07:50:01,291 INFO L140 encePairwiseOnDemand]: 627/632 looper letters, 161 selfloop transitions, 3 changer transitions 0/167 dead transitions. [2023-11-19 07:50:01,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 167 transitions, 1194 flow [2023-11-19 07:50:01,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:01,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:50:01,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1249 transitions. [2023-11-19 07:50:01,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49406645569620256 [2023-11-19 07:50:01,297 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1249 transitions. [2023-11-19 07:50:01,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1249 transitions. [2023-11-19 07:50:01,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:01,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1249 transitions. [2023-11-19 07:50:01,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.25) internal successors, (1249), 4 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:01,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 632.0) internal successors, (3160), 5 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:01,308 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 632.0) internal successors, (3160), 5 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:01,308 INFO L175 Difference]: Start difference. First operand has 61 places, 100 transitions, 516 flow. Second operand 4 states and 1249 transitions. [2023-11-19 07:50:01,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 167 transitions, 1194 flow [2023-11-19 07:50:01,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 167 transitions, 1191 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:50:01,315 INFO L231 Difference]: Finished difference. Result has 64 places, 100 transitions, 525 flow [2023-11-19 07:50:01,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=525, PETRI_PLACES=64, PETRI_TRANSITIONS=100} [2023-11-19 07:50:01,318 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2023-11-19 07:50:01,319 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 100 transitions, 525 flow [2023-11-19 07:50:01,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:01,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:01,321 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:01,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:50:01,322 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:50:01,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:01,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1348442309, now seen corresponding path program 1 times [2023-11-19 07:50:01,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:01,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339813598] [2023-11-19 07:50:01,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:01,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:50:01,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:01,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339813598] [2023-11-19 07:50:01,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339813598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:01,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:01,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:01,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536796388] [2023-11-19 07:50:01,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:01,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:01,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:01,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:01,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:01,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 632 [2023-11-19 07:50:01,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 100 transitions, 525 flow. Second operand has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:01,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:01,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 632 [2023-11-19 07:50:01,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:02,603 INFO L124 PetriNetUnfolderBase]: 5083/6951 cut-off events. [2023-11-19 07:50:02,604 INFO L125 PetriNetUnfolderBase]: For 1247/1247 co-relation queries the response was YES. [2023-11-19 07:50:02,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16311 conditions, 6951 events. 5083/6951 cut-off events. For 1247/1247 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 36177 event pairs, 1821 based on Foata normal form. 94/4775 useless extension candidates. Maximal degree in co-relation 16085. Up to 2574 conditions per place. [2023-11-19 07:50:02,662 INFO L140 encePairwiseOnDemand]: 624/632 looper letters, 148 selfloop transitions, 17 changer transitions 0/168 dead transitions. [2023-11-19 07:50:02,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 168 transitions, 1121 flow [2023-11-19 07:50:02,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:50:02,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:50:02,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1857 transitions. [2023-11-19 07:50:02,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897151898734177 [2023-11-19 07:50:02,674 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1857 transitions. [2023-11-19 07:50:02,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1857 transitions. [2023-11-19 07:50:02,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:02,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1857 transitions. [2023-11-19 07:50:02,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 309.5) internal successors, (1857), 6 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:02,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 632.0) internal successors, (4424), 7 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:02,694 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 632.0) internal successors, (4424), 7 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:02,694 INFO L175 Difference]: Start difference. First operand has 64 places, 100 transitions, 525 flow. Second operand 6 states and 1857 transitions. [2023-11-19 07:50:02,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 168 transitions, 1121 flow [2023-11-19 07:50:02,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 168 transitions, 1115 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-19 07:50:02,707 INFO L231 Difference]: Finished difference. Result has 70 places, 102 transitions, 575 flow [2023-11-19 07:50:02,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=575, PETRI_PLACES=70, PETRI_TRANSITIONS=102} [2023-11-19 07:50:02,709 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2023-11-19 07:50:02,709 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 102 transitions, 575 flow [2023-11-19 07:50:02,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:02,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:02,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:02,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:50:02,711 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:50:02,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:02,711 INFO L85 PathProgramCache]: Analyzing trace with hash -786305011, now seen corresponding path program 1 times [2023-11-19 07:50:02,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:02,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272477081] [2023-11-19 07:50:02,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:02,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:02,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:02,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272477081] [2023-11-19 07:50:02,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272477081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:02,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:02,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:50:02,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46659300] [2023-11-19 07:50:02,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:02,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:02,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:02,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:02,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:02,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 632 [2023-11-19 07:50:02,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 102 transitions, 575 flow. Second operand has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:02,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:02,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 632 [2023-11-19 07:50:02,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:03,836 INFO L124 PetriNetUnfolderBase]: 5168/7387 cut-off events. [2023-11-19 07:50:03,836 INFO L125 PetriNetUnfolderBase]: For 2117/2117 co-relation queries the response was YES. [2023-11-19 07:50:03,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17610 conditions, 7387 events. 5168/7387 cut-off events. For 2117/2117 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 40900 event pairs, 1332 based on Foata normal form. 217/5401 useless extension candidates. Maximal degree in co-relation 17380. Up to 4493 conditions per place. [2023-11-19 07:50:03,884 INFO L140 encePairwiseOnDemand]: 628/632 looper letters, 118 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2023-11-19 07:50:03,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 123 transitions, 881 flow [2023-11-19 07:50:03,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:03,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:50:03,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1004 transitions. [2023-11-19 07:50:03,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295358649789029 [2023-11-19 07:50:03,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1004 transitions. [2023-11-19 07:50:03,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1004 transitions. [2023-11-19 07:50:03,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:03,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1004 transitions. [2023-11-19 07:50:03,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:03,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:03,902 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:03,902 INFO L175 Difference]: Start difference. First operand has 70 places, 102 transitions, 575 flow. Second operand 3 states and 1004 transitions. [2023-11-19 07:50:03,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 123 transitions, 881 flow [2023-11-19 07:50:03,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 123 transitions, 869 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-19 07:50:03,913 INFO L231 Difference]: Finished difference. Result has 71 places, 103 transitions, 579 flow [2023-11-19 07:50:03,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=579, PETRI_PLACES=71, PETRI_TRANSITIONS=103} [2023-11-19 07:50:03,915 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 27 predicate places. [2023-11-19 07:50:03,915 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 103 transitions, 579 flow [2023-11-19 07:50:03,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:03,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:03,916 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:03,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:50:03,916 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:50:03,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:03,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1736050452, now seen corresponding path program 1 times [2023-11-19 07:50:03,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:03,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297151991] [2023-11-19 07:50:03,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:03,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:50:04,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297151991] [2023-11-19 07:50:04,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297151991] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156946934] [2023-11-19 07:50:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:04,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:04,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:04,117 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:04,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:50:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:04,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:50:04,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:04,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:50:04,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:04,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:50:04,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156946934] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:04,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:04,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-11-19 07:50:04,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814374552] [2023-11-19 07:50:04,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:04,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:50:04,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:04,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:50:04,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:50:05,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 632 [2023-11-19 07:50:05,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 103 transitions, 579 flow. Second operand has 15 states, 15 states have (on average 288.93333333333334) internal successors, (4334), 15 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:05,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:05,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 632 [2023-11-19 07:50:05,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:08,291 INFO L124 PetriNetUnfolderBase]: 11762/16896 cut-off events. [2023-11-19 07:50:08,291 INFO L125 PetriNetUnfolderBase]: For 7237/7237 co-relation queries the response was YES. [2023-11-19 07:50:08,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42907 conditions, 16896 events. 11762/16896 cut-off events. For 7237/7237 co-relation queries the response was YES. Maximal size of possible extension queue 914. Compared 107170 event pairs, 6599 based on Foata normal form. 530/14260 useless extension candidates. Maximal degree in co-relation 42485. Up to 3912 conditions per place. [2023-11-19 07:50:08,419 INFO L140 encePairwiseOnDemand]: 619/632 looper letters, 533 selfloop transitions, 47 changer transitions 0/583 dead transitions. [2023-11-19 07:50:08,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 583 transitions, 3974 flow [2023-11-19 07:50:08,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-19 07:50:08,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-19 07:50:08,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 9227 transitions. [2023-11-19 07:50:08,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47095753368721927 [2023-11-19 07:50:08,457 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 9227 transitions. [2023-11-19 07:50:08,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 9227 transitions. [2023-11-19 07:50:08,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:08,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 9227 transitions. [2023-11-19 07:50:08,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 297.64516129032256) internal successors, (9227), 31 states have internal predecessors, (9227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:08,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 632.0) internal successors, (20224), 32 states have internal predecessors, (20224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:08,535 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 632.0) internal successors, (20224), 32 states have internal predecessors, (20224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:08,535 INFO L175 Difference]: Start difference. First operand has 71 places, 103 transitions, 579 flow. Second operand 31 states and 9227 transitions. [2023-11-19 07:50:08,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 583 transitions, 3974 flow [2023-11-19 07:50:08,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 583 transitions, 3961 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:50:08,558 INFO L231 Difference]: Finished difference. Result has 110 places, 128 transitions, 971 flow [2023-11-19 07:50:08,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=971, PETRI_PLACES=110, PETRI_TRANSITIONS=128} [2023-11-19 07:50:08,559 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 66 predicate places. [2023-11-19 07:50:08,559 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 128 transitions, 971 flow [2023-11-19 07:50:08,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 288.93333333333334) internal successors, (4334), 15 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:08,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:08,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:08,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:08,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:08,777 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:50:08,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:08,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1394350853, now seen corresponding path program 1 times [2023-11-19 07:50:08,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:08,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612475358] [2023-11-19 07:50:08,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:08,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:08,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:08,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612475358] [2023-11-19 07:50:08,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612475358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:08,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:08,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:08,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038596296] [2023-11-19 07:50:08,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:08,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:08,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:08,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:08,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:08,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 632 [2023-11-19 07:50:08,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 128 transitions, 971 flow. Second operand has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:09,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:09,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 632 [2023-11-19 07:50:09,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:11,128 INFO L124 PetriNetUnfolderBase]: 9882/14235 cut-off events. [2023-11-19 07:50:11,128 INFO L125 PetriNetUnfolderBase]: For 17416/17416 co-relation queries the response was YES. [2023-11-19 07:50:11,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38746 conditions, 14235 events. 9882/14235 cut-off events. For 17416/17416 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 88999 event pairs, 6997 based on Foata normal form. 0/12185 useless extension candidates. Maximal degree in co-relation 38279. Up to 14138 conditions per place. [2023-11-19 07:50:11,253 INFO L140 encePairwiseOnDemand]: 630/632 looper letters, 123 selfloop transitions, 1 changer transitions 0/127 dead transitions. [2023-11-19 07:50:11,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 127 transitions, 1215 flow [2023-11-19 07:50:11,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:11,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:50:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 982 transitions. [2023-11-19 07:50:11,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5179324894514767 [2023-11-19 07:50:11,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 982 transitions. [2023-11-19 07:50:11,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 982 transitions. [2023-11-19 07:50:11,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:11,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 982 transitions. [2023-11-19 07:50:11,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:11,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:11,271 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:11,271 INFO L175 Difference]: Start difference. First operand has 110 places, 128 transitions, 971 flow. Second operand 3 states and 982 transitions. [2023-11-19 07:50:11,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 127 transitions, 1215 flow [2023-11-19 07:50:11,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 127 transitions, 1171 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-19 07:50:11,325 INFO L231 Difference]: Finished difference. Result has 107 places, 127 transitions, 925 flow [2023-11-19 07:50:11,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=925, PETRI_PLACES=107, PETRI_TRANSITIONS=127} [2023-11-19 07:50:11,326 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 63 predicate places. [2023-11-19 07:50:11,326 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 127 transitions, 925 flow [2023-11-19 07:50:11,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:11,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:11,327 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:11,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:50:11,328 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:50:11,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:11,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1141019842, now seen corresponding path program 1 times [2023-11-19 07:50:11,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:11,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368700199] [2023-11-19 07:50:11,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:11,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:50:11,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:11,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368700199] [2023-11-19 07:50:11,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368700199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:11,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:11,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:11,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349012876] [2023-11-19 07:50:11,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:11,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:11,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:11,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:11,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:11,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 632 [2023-11-19 07:50:11,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 127 transitions, 925 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:11,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:11,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 632 [2023-11-19 07:50:11,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:13,300 INFO L124 PetriNetUnfolderBase]: 7654/11057 cut-off events. [2023-11-19 07:50:13,300 INFO L125 PetriNetUnfolderBase]: For 14780/14780 co-relation queries the response was YES. [2023-11-19 07:50:13,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30307 conditions, 11057 events. 7654/11057 cut-off events. For 14780/14780 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 66302 event pairs, 5293 based on Foata normal form. 0/9789 useless extension candidates. Maximal degree in co-relation 30268. Up to 10366 conditions per place. [2023-11-19 07:50:13,386 INFO L140 encePairwiseOnDemand]: 624/632 looper letters, 131 selfloop transitions, 22 changer transitions 5/161 dead transitions. [2023-11-19 07:50:13,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 161 transitions, 1416 flow [2023-11-19 07:50:13,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:50:13,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:50:13,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1826 transitions. [2023-11-19 07:50:13,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48154008438818563 [2023-11-19 07:50:13,394 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1826 transitions. [2023-11-19 07:50:13,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1826 transitions. [2023-11-19 07:50:13,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:13,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1826 transitions. [2023-11-19 07:50:13,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 304.3333333333333) internal successors, (1826), 6 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:13,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 632.0) internal successors, (4424), 7 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:13,410 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 632.0) internal successors, (4424), 7 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:13,410 INFO L175 Difference]: Start difference. First operand has 107 places, 127 transitions, 925 flow. Second operand 6 states and 1826 transitions. [2023-11-19 07:50:13,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 161 transitions, 1416 flow [2023-11-19 07:50:13,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 161 transitions, 1415 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:50:13,458 INFO L231 Difference]: Finished difference. Result has 111 places, 122 transitions, 932 flow [2023-11-19 07:50:13,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=932, PETRI_PLACES=111, PETRI_TRANSITIONS=122} [2023-11-19 07:50:13,459 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 67 predicate places. [2023-11-19 07:50:13,460 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 122 transitions, 932 flow [2023-11-19 07:50:13,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:13,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:13,461 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-11-19 07:50:13,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:50:13,461 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:50:13,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:13,462 INFO L85 PathProgramCache]: Analyzing trace with hash 28579080, now seen corresponding path program 2 times [2023-11-19 07:50:13,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:13,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186569244] [2023-11-19 07:50:13,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:13,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:13,696 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:13,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:13,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186569244] [2023-11-19 07:50:13,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186569244] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:13,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529890792] [2023-11-19 07:50:13,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:50:13,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:13,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:13,701 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:13,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:50:13,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:50:13,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:50:13,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:50:13,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:50:13,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:13,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529890792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:13,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:13,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-11-19 07:50:13,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874269417] [2023-11-19 07:50:13,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:13,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:13,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:13,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:13,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:50:13,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 632 [2023-11-19 07:50:13,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 122 transitions, 932 flow. Second operand has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:13,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:13,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 632 [2023-11-19 07:50:13,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:15,203 INFO L124 PetriNetUnfolderBase]: 7650/11050 cut-off events. [2023-11-19 07:50:15,203 INFO L125 PetriNetUnfolderBase]: For 15425/15425 co-relation queries the response was YES. [2023-11-19 07:50:15,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31030 conditions, 11050 events. 7650/11050 cut-off events. For 15425/15425 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 66726 event pairs, 5293 based on Foata normal form. 3/10499 useless extension candidates. Maximal degree in co-relation 30989. Up to 10897 conditions per place. [2023-11-19 07:50:15,304 INFO L140 encePairwiseOnDemand]: 629/632 looper letters, 100 selfloop transitions, 16 changer transitions 0/119 dead transitions. [2023-11-19 07:50:15,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 119 transitions, 1089 flow [2023-11-19 07:50:15,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:15,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:50:15,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1260 transitions. [2023-11-19 07:50:15,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49841772151898733 [2023-11-19 07:50:15,310 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1260 transitions. [2023-11-19 07:50:15,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1260 transitions. [2023-11-19 07:50:15,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:15,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1260 transitions. [2023-11-19 07:50:15,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:15,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 632.0) internal successors, (3160), 5 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:15,321 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 632.0) internal successors, (3160), 5 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:15,321 INFO L175 Difference]: Start difference. First operand has 111 places, 122 transitions, 932 flow. Second operand 4 states and 1260 transitions. [2023-11-19 07:50:15,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 119 transitions, 1089 flow [2023-11-19 07:50:15,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 119 transitions, 1049 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:50:15,373 INFO L231 Difference]: Finished difference. Result has 109 places, 119 transitions, 849 flow [2023-11-19 07:50:15,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=849, PETRI_PLACES=109, PETRI_TRANSITIONS=119} [2023-11-19 07:50:15,374 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 65 predicate places. [2023-11-19 07:50:15,374 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 119 transitions, 849 flow [2023-11-19 07:50:15,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:15,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:15,375 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:15,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-19 07:50:15,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:50:15,593 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:50:15,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:15,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1722866423, now seen corresponding path program 1 times [2023-11-19 07:50:15,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:15,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397441468] [2023-11-19 07:50:15,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:15,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:15,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:50:15,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:15,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397441468] [2023-11-19 07:50:15,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397441468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:15,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:15,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:15,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719108829] [2023-11-19 07:50:15,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:15,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:15,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:15,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:15,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:16,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 632 [2023-11-19 07:50:16,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 119 transitions, 849 flow. Second operand has 5 states, 5 states have (on average 297.4) internal successors, (1487), 5 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:16,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:16,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 632 [2023-11-19 07:50:16,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:18,017 INFO L124 PetriNetUnfolderBase]: 9296/13762 cut-off events. [2023-11-19 07:50:18,018 INFO L125 PetriNetUnfolderBase]: For 19703/19703 co-relation queries the response was YES. [2023-11-19 07:50:18,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38376 conditions, 13762 events. 9296/13762 cut-off events. For 19703/19703 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 90121 event pairs, 6620 based on Foata normal form. 368/13579 useless extension candidates. Maximal degree in co-relation 38335. Up to 10913 conditions per place. [2023-11-19 07:50:18,097 INFO L140 encePairwiseOnDemand]: 627/632 looper letters, 118 selfloop transitions, 22 changer transitions 0/143 dead transitions. [2023-11-19 07:50:18,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 143 transitions, 1232 flow [2023-11-19 07:50:18,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:50:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:50:18,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1528 transitions. [2023-11-19 07:50:18,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835443037974684 [2023-11-19 07:50:18,104 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1528 transitions. [2023-11-19 07:50:18,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1528 transitions. [2023-11-19 07:50:18,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:18,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1528 transitions. [2023-11-19 07:50:18,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.6) internal successors, (1528), 5 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:18,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 632.0) internal successors, (3792), 6 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:18,315 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 632.0) internal successors, (3792), 6 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:18,315 INFO L175 Difference]: Start difference. First operand has 109 places, 119 transitions, 849 flow. Second operand 5 states and 1528 transitions. [2023-11-19 07:50:18,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 143 transitions, 1232 flow [2023-11-19 07:50:18,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 143 transitions, 1215 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:50:18,360 INFO L231 Difference]: Finished difference. Result has 112 places, 119 transitions, 880 flow [2023-11-19 07:50:18,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=880, PETRI_PLACES=112, PETRI_TRANSITIONS=119} [2023-11-19 07:50:18,362 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 68 predicate places. [2023-11-19 07:50:18,362 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 119 transitions, 880 flow [2023-11-19 07:50:18,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.4) internal successors, (1487), 5 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:18,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:18,363 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:18,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:50:18,363 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:50:18,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:18,364 INFO L85 PathProgramCache]: Analyzing trace with hash -294262482, now seen corresponding path program 2 times [2023-11-19 07:50:18,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:18,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729797757] [2023-11-19 07:50:18,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:18,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:18,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:50:18,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:18,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729797757] [2023-11-19 07:50:18,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729797757] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:18,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490120241] [2023-11-19 07:50:18,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:50:18,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:18,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:18,461 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:18,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:50:18,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:50:18,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:50:18,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:50:18,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 07:50:18,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 07:50:18,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490120241] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:18,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:18,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-19 07:50:18,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204286118] [2023-11-19 07:50:18,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:18,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:50:18,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:18,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:50:18,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:50:18,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 632 [2023-11-19 07:50:18,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 119 transitions, 880 flow. Second operand has 6 states, 6 states have (on average 316.6666666666667) internal successors, (1900), 6 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:18,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:18,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 632 [2023-11-19 07:50:18,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:21,287 INFO L124 PetriNetUnfolderBase]: 10956/16100 cut-off events. [2023-11-19 07:50:21,287 INFO L125 PetriNetUnfolderBase]: For 25158/25158 co-relation queries the response was YES. [2023-11-19 07:50:21,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46396 conditions, 16100 events. 10956/16100 cut-off events. For 25158/25158 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 104729 event pairs, 3846 based on Foata normal form. 0/15550 useless extension candidates. Maximal degree in co-relation 46354. Up to 8162 conditions per place. [2023-11-19 07:50:21,409 INFO L140 encePairwiseOnDemand]: 628/632 looper letters, 173 selfloop transitions, 8 changer transitions 0/184 dead transitions. [2023-11-19 07:50:21,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 184 transitions, 1489 flow [2023-11-19 07:50:21,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:50:21,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:50:21,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1971 transitions. [2023-11-19 07:50:21,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197784810126582 [2023-11-19 07:50:21,416 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1971 transitions. [2023-11-19 07:50:21,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1971 transitions. [2023-11-19 07:50:21,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:21,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1971 transitions. [2023-11-19 07:50:21,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 328.5) internal successors, (1971), 6 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:21,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 632.0) internal successors, (4424), 7 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:21,432 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 632.0) internal successors, (4424), 7 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:21,432 INFO L175 Difference]: Start difference. First operand has 112 places, 119 transitions, 880 flow. Second operand 6 states and 1971 transitions. [2023-11-19 07:50:21,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 184 transitions, 1489 flow [2023-11-19 07:50:21,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 184 transitions, 1433 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-19 07:50:21,524 INFO L231 Difference]: Finished difference. Result has 114 places, 120 transitions, 856 flow [2023-11-19 07:50:21,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=856, PETRI_PLACES=114, PETRI_TRANSITIONS=120} [2023-11-19 07:50:21,525 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 70 predicate places. [2023-11-19 07:50:21,526 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 120 transitions, 856 flow [2023-11-19 07:50:21,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 316.6666666666667) internal successors, (1900), 6 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:21,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:21,527 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:21,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:21,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:50:21,741 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:50:21,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:21,741 INFO L85 PathProgramCache]: Analyzing trace with hash -800061958, now seen corresponding path program 1 times [2023-11-19 07:50:21,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:21,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744966818] [2023-11-19 07:50:21,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:21,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:50:21,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:21,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744966818] [2023-11-19 07:50:21,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744966818] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:21,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944107511] [2023-11-19 07:50:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:21,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:21,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:21,894 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:21,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:50:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:22,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:50:22,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:22,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:50:22,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:22,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944107511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:22,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:22,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [2] total 6 [2023-11-19 07:50:22,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970040258] [2023-11-19 07:50:22,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:22,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:22,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:22,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:22,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:22,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 632 [2023-11-19 07:50:22,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 120 transitions, 856 flow. Second operand has 5 states, 5 states have (on average 297.4) internal successors, (1487), 5 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:22,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:22,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 632 [2023-11-19 07:50:22,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:24,985 INFO L124 PetriNetUnfolderBase]: 9782/14372 cut-off events. [2023-11-19 07:50:24,985 INFO L125 PetriNetUnfolderBase]: For 27046/27046 co-relation queries the response was YES. [2023-11-19 07:50:25,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42607 conditions, 14372 events. 9782/14372 cut-off events. For 27046/27046 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 91735 event pairs, 6952 based on Foata normal form. 204/14072 useless extension candidates. Maximal degree in co-relation 42565. Up to 12799 conditions per place. [2023-11-19 07:50:25,088 INFO L140 encePairwiseOnDemand]: 627/632 looper letters, 95 selfloop transitions, 20 changer transitions 24/142 dead transitions. [2023-11-19 07:50:25,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 142 transitions, 1247 flow [2023-11-19 07:50:25,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:50:25,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:50:25,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1524 transitions. [2023-11-19 07:50:25,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48227848101265824 [2023-11-19 07:50:25,099 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1524 transitions. [2023-11-19 07:50:25,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1524 transitions. [2023-11-19 07:50:25,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:25,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1524 transitions. [2023-11-19 07:50:25,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 304.8) internal successors, (1524), 5 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:25,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 632.0) internal successors, (3792), 6 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:25,113 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 632.0) internal successors, (3792), 6 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:25,113 INFO L175 Difference]: Start difference. First operand has 114 places, 120 transitions, 856 flow. Second operand 5 states and 1524 transitions. [2023-11-19 07:50:25,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 142 transitions, 1247 flow [2023-11-19 07:50:25,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 142 transitions, 1204 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-19 07:50:25,171 INFO L231 Difference]: Finished difference. Result has 116 places, 118 transitions, 852 flow [2023-11-19 07:50:25,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=852, PETRI_PLACES=116, PETRI_TRANSITIONS=118} [2023-11-19 07:50:25,172 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 72 predicate places. [2023-11-19 07:50:25,173 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 118 transitions, 852 flow [2023-11-19 07:50:25,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.4) internal successors, (1487), 5 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:25,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:25,173 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-11-19 07:50:25,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:25,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:50:25,388 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:50:25,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:25,389 INFO L85 PathProgramCache]: Analyzing trace with hash -104075843, now seen corresponding path program 1 times [2023-11-19 07:50:25,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:25,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028046913] [2023-11-19 07:50:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:25,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:25,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:25,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028046913] [2023-11-19 07:50:25,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028046913] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:25,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566200777] [2023-11-19 07:50:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:25,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:25,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:25,754 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:25,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528d1e0c-3635-456c-8d05-43569d60e4bc/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:50:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:50:25,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:25,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:26,200 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:26,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566200777] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:26,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:26,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-19 07:50:26,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79373704] [2023-11-19 07:50:26,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:26,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-19 07:50:26,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:26,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-19 07:50:26,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600