./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya --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 a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:03:58,663 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:03:58,725 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 01:03:58,729 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:03:58,729 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:03:58,752 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:03:58,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:03:58,753 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:03:58,753 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:03:58,754 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:03:58,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:03:58,755 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:03:58,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:03:58,756 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:03:58,757 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:03:58,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:03:58,758 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:03:58,758 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:03:58,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:03:58,759 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:03:58,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:03:58,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:03:58,760 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:03:58,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:03:58,761 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 01:03:58,761 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:03:58,762 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:03:58,762 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:03:58,762 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:03:58,763 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:03:58,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:03:58,763 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:03:58,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:03:58,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:03:58,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:03:58,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:03:58,765 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:03:58,765 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:03:58,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:03:58,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:03:58,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:03:58,766 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:03:58,766 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:03:58,766 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:03:58,766 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_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb [2023-11-29 01:03:58,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:03:58,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:03:59,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:03:59,002 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:03:59,002 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:03:59,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2023-11-29 01:04:01,764 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:04:01,984 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:04:01,984 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2023-11-29 01:04:02,001 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/data/02ecf51e2/0249f348288f44bf84ad26d1dcf2a8e0/FLAG8e0139521 [2023-11-29 01:04:02,013 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/data/02ecf51e2/0249f348288f44bf84ad26d1dcf2a8e0 [2023-11-29 01:04:02,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:04:02,017 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:04:02,018 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:04:02,019 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:04:02,023 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:04:02,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:04:02" (1/1) ... [2023-11-29 01:04:02,024 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ca1a26b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:02, skipping insertion in model container [2023-11-29 01:04:02,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:04:02" (1/1) ... [2023-11-29 01:04:02,068 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:04:02,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:04:02,422 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:04:02,463 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:04:02,513 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:04:02,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:02 WrapperNode [2023-11-29 01:04:02,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:04:02,515 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:04:02,515 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:04:02,515 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:04:02,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:02" (1/1) ... [2023-11-29 01:04:02,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:02" (1/1) ... [2023-11-29 01:04:02,560 INFO L138 Inliner]: procedures = 265, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2023-11-29 01:04:02,560 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:04:02,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:04:02,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:04:02,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:04:02,573 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:02" (1/1) ... [2023-11-29 01:04:02,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:02" (1/1) ... [2023-11-29 01:04:02,578 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:02" (1/1) ... [2023-11-29 01:04:02,589 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [5, 1]. 83 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [3, 1]. [2023-11-29 01:04:02,590 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:02" (1/1) ... [2023-11-29 01:04:02,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:02" (1/1) ... [2023-11-29 01:04:02,595 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:02" (1/1) ... [2023-11-29 01:04:02,597 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:02" (1/1) ... [2023-11-29 01:04:02,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:02" (1/1) ... [2023-11-29 01:04:02,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:02" (1/1) ... [2023-11-29 01:04:02,602 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:04:02,603 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:04:02,603 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:04:02,603 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:04:02,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:02" (1/1) ... [2023-11-29 01:04:02,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:04:02,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:02,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:04:02,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:04:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:04:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:04:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 01:04:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:04:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:04:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:04:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:04:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 01:04:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:04:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 01:04:02,673 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 01:04:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:04:02,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:04:02,674 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:04:02,801 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:04:02,802 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:04:02,960 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:04:03,104 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:04:03,104 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:04:03,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:04:03 BoogieIcfgContainer [2023-11-29 01:04:03,105 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:04:03,107 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:04:03,107 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:04:03,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:04:03,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:04:02" (1/3) ... [2023-11-29 01:04:03,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22badc0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:04:03, skipping insertion in model container [2023-11-29 01:04:03,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:02" (2/3) ... [2023-11-29 01:04:03,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22badc0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:04:03, skipping insertion in model container [2023-11-29 01:04:03,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:04:03" (3/3) ... [2023-11-29 01:04:03,113 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_08-tricky_address3.i [2023-11-29 01:04:03,122 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:04:03,132 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:04:03,132 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-29 01:04:03,132 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:04:03,167 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:04:03,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 31 transitions, 66 flow [2023-11-29 01:04:03,221 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2023-11-29 01:04:03,221 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:04:03,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 1/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2023-11-29 01:04:03,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 31 transitions, 66 flow [2023-11-29 01:04:03,227 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 30 transitions, 63 flow [2023-11-29 01:04:03,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:04:03,241 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;@101e1bc6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:04:03,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-29 01:04:03,244 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:04:03,244 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 01:04:03,244 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:04:03,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:03,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 01:04:03,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:03,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:03,250 INFO L85 PathProgramCache]: Analyzing trace with hash 239741, now seen corresponding path program 1 times [2023-11-29 01:04:03,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:03,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227678302] [2023-11-29 01:04:03,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:03,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:03,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:03,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227678302] [2023-11-29 01:04:03,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227678302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:03,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:03,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:04:03,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207019788] [2023-11-29 01:04:03,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:03,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:04:03,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:03,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:04:03,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:04:03,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-29 01:04:03,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2023-11-29 01:04:03,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:03,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-29 01:04:03,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:03,604 INFO L124 PetriNetUnfolderBase]: 43/143 cut-off events. [2023-11-29 01:04:03,604 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:04:03,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 143 events. 43/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 545 event pairs, 42 based on Foata normal form. 1/127 useless extension candidates. Maximal degree in co-relation 233. Up to 100 conditions per place. [2023-11-29 01:04:03,608 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 15 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2023-11-29 01:04:03,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 99 flow [2023-11-29 01:04:03,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:04:03,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:04:03,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2023-11-29 01:04:03,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2023-11-29 01:04:03,619 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 64 transitions. [2023-11-29 01:04:03,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 64 transitions. [2023-11-29 01:04:03,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:03,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 64 transitions. [2023-11-29 01:04:03,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2023-11-29 01:04:03,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2023-11-29 01:04:03,627 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2023-11-29 01:04:03,628 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 63 flow. Second operand 4 states and 64 transitions. [2023-11-29 01:04:03,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 99 flow [2023-11-29 01:04:03,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:04:03,634 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 68 flow [2023-11-29 01:04:03,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-11-29 01:04:03,639 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-11-29 01:04:03,640 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 68 flow [2023-11-29 01:04:03,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2023-11-29 01:04:03,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:03,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-29 01:04:03,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:04:03,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:03,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:03,642 INFO L85 PathProgramCache]: Analyzing trace with hash 7432219, now seen corresponding path program 1 times [2023-11-29 01:04:03,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:03,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830456639] [2023-11-29 01:04:03,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:03,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:03,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:03,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:03,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830456639] [2023-11-29 01:04:03,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830456639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:03,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:03,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:04:03,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547514177] [2023-11-29 01:04:03,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:03,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:04:03,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:03,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:04:03,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:04:03,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-29 01:04:03,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2023-11-29 01:04:03,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:03,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-29 01:04:03,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:03,816 INFO L124 PetriNetUnfolderBase]: 43/146 cut-off events. [2023-11-29 01:04:03,816 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 01:04:03,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 146 events. 43/146 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 551 event pairs, 42 based on Foata normal form. 1/131 useless extension candidates. Maximal degree in co-relation 237. Up to 104 conditions per place. [2023-11-29 01:04:03,818 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 18 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-11-29 01:04:03,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 118 flow [2023-11-29 01:04:03,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:04:03,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:04:03,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2023-11-29 01:04:03,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2023-11-29 01:04:03,821 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 67 transitions. [2023-11-29 01:04:03,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 67 transitions. [2023-11-29 01:04:03,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:03,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 67 transitions. [2023-11-29 01:04:03,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:03,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2023-11-29 01:04:03,823 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2023-11-29 01:04:03,824 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 68 flow. Second operand 4 states and 67 transitions. [2023-11-29 01:04:03,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 118 flow [2023-11-29 01:04:03,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 106 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:04:03,826 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 82 flow [2023-11-29 01:04:03,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-11-29 01:04:03,827 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-11-29 01:04:03,827 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 82 flow [2023-11-29 01:04:03,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2023-11-29 01:04:03,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:03,828 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 01:04:03,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:04:03,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:03,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:03,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1924840366, now seen corresponding path program 1 times [2023-11-29 01:04:03,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:03,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217487122] [2023-11-29 01:04:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:03,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:04:03,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:03,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217487122] [2023-11-29 01:04:03,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217487122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:03,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:03,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:04:03,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189534928] [2023-11-29 01:04:03,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:03,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:04:03,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:03,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:04:03,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:03,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-29 01:04:03,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2023-11-29 01:04:03,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:03,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-29 01:04:03,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:03,951 INFO L124 PetriNetUnfolderBase]: 43/145 cut-off events. [2023-11-29 01:04:03,951 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 01:04:03,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 145 events. 43/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 550 event pairs, 42 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 247. Up to 103 conditions per place. [2023-11-29 01:04:03,953 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 16 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2023-11-29 01:04:03,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 118 flow [2023-11-29 01:04:03,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:04:03,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:04:03,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2023-11-29 01:04:03,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2023-11-29 01:04:03,955 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 52 transitions. [2023-11-29 01:04:03,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 52 transitions. [2023-11-29 01:04:03,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:03,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 52 transitions. [2023-11-29 01:04:03,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2023-11-29 01:04:03,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2023-11-29 01:04:03,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2023-11-29 01:04:03,957 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 82 flow. Second operand 3 states and 52 transitions. [2023-11-29 01:04:03,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 118 flow [2023-11-29 01:04:03,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:04:03,959 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 84 flow [2023-11-29 01:04:03,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-11-29 01:04:03,960 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-11-29 01:04:03,960 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 84 flow [2023-11-29 01:04:03,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2023-11-29 01:04:03,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:03,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:03,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:04:03,961 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:03,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:03,962 INFO L85 PathProgramCache]: Analyzing trace with hash -752630643, now seen corresponding path program 1 times [2023-11-29 01:04:03,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:03,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718465936] [2023-11-29 01:04:03,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:03,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:04,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:04,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718465936] [2023-11-29 01:04:04,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718465936] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:04:04,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580963572] [2023-11-29 01:04:04,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:04,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:04,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:04,080 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:04,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:04:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:04,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:04:04,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:04,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:04,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:04,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580963572] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:04:04,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:04:04,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-29 01:04:04,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783226697] [2023-11-29 01:04:04,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:04:04,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:04:04,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:04,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:04:04,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:04:04,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-29 01:04:04,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 84 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 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) [2023-11-29 01:04:04,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:04,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-29 01:04:04,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:04,397 INFO L124 PetriNetUnfolderBase]: 43/149 cut-off events. [2023-11-29 01:04:04,397 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-29 01:04:04,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 149 events. 43/149 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 547 event pairs, 42 based on Foata normal form. 2/136 useless extension candidates. Maximal degree in co-relation 244. Up to 101 conditions per place. [2023-11-29 01:04:04,399 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 16 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2023-11-29 01:04:04,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 33 transitions, 148 flow [2023-11-29 01:04:04,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:04:04,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 01:04:04,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2023-11-29 01:04:04,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700460829493088 [2023-11-29 01:04:04,401 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 102 transitions. [2023-11-29 01:04:04,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 102 transitions. [2023-11-29 01:04:04,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:04,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 102 transitions. [2023-11-29 01:04:04,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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) [2023-11-29 01:04:04,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 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) [2023-11-29 01:04:04,405 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 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) [2023-11-29 01:04:04,405 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 84 flow. Second operand 7 states and 102 transitions. [2023-11-29 01:04:04,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 33 transitions, 148 flow [2023-11-29 01:04:04,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 33 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:04:04,408 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 113 flow [2023-11-29 01:04:04,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=113, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2023-11-29 01:04:04,409 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-11-29 01:04:04,409 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 113 flow [2023-11-29 01:04:04,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 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) [2023-11-29 01:04:04,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:04,409 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:04,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:04:04,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:04,616 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:04,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:04,617 INFO L85 PathProgramCache]: Analyzing trace with hash 933514541, now seen corresponding path program 2 times [2023-11-29 01:04:04,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:04,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33142353] [2023-11-29 01:04:04,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:04,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:04,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:04,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33142353] [2023-11-29 01:04:04,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33142353] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:04:04,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005713761] [2023-11-29 01:04:04,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:04:04,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:04,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:04,771 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:04,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:04:04,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:04:04,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:04:04,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:04:04,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:04,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-29 01:04:04,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-11-29 01:04:04,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:04:04,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:04:04,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005713761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:04,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:04:04,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 10 [2023-11-29 01:04:04,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174776078] [2023-11-29 01:04:04,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:04,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:04:04,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:04,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:04:04,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:04:04,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-29 01:04:04,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-11-29 01:04:04,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:04,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-29 01:04:04,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:05,060 INFO L124 PetriNetUnfolderBase]: 57/164 cut-off events. [2023-11-29 01:04:05,060 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 01:04:05,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 164 events. 57/164 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 562 event pairs, 18 based on Foata normal form. 8/155 useless extension candidates. Maximal degree in co-relation 289. Up to 74 conditions per place. [2023-11-29 01:04:05,062 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 35 selfloop transitions, 6 changer transitions 3/52 dead transitions. [2023-11-29 01:04:05,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 239 flow [2023-11-29 01:04:05,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:04:05,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:04:05,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2023-11-29 01:04:05,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6193548387096774 [2023-11-29 01:04:05,064 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 96 transitions. [2023-11-29 01:04:05,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 96 transitions. [2023-11-29 01:04:05,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:05,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 96 transitions. [2023-11-29 01:04:05,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2023-11-29 01:04:05,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 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) [2023-11-29 01:04:05,066 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 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) [2023-11-29 01:04:05,066 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 113 flow. Second operand 5 states and 96 transitions. [2023-11-29 01:04:05,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 239 flow [2023-11-29 01:04:05,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 225 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-29 01:04:05,069 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 137 flow [2023-11-29 01:04:05,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2023-11-29 01:04:05,070 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2023-11-29 01:04:05,070 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 137 flow [2023-11-29 01:04:05,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-11-29 01:04:05,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:05,071 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:05,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:04:05,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:05,276 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:05,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:05,276 INFO L85 PathProgramCache]: Analyzing trace with hash 933753608, now seen corresponding path program 1 times [2023-11-29 01:04:05,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:05,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248417644] [2023-11-29 01:04:05,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:05,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:04:05,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:05,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248417644] [2023-11-29 01:04:05,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248417644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:05,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:05,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:04:05,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460330669] [2023-11-29 01:04:05,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:05,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:04:05,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:05,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:04:05,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:04:05,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-29 01:04:05,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-11-29 01:04:05,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:05,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-29 01:04:05,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:05,422 INFO L124 PetriNetUnfolderBase]: 39/137 cut-off events. [2023-11-29 01:04:05,422 INFO L125 PetriNetUnfolderBase]: For 62/65 co-relation queries the response was YES. [2023-11-29 01:04:05,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 137 events. 39/137 cut-off events. For 62/65 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 477 event pairs, 8 based on Foata normal form. 7/133 useless extension candidates. Maximal degree in co-relation 282. Up to 62 conditions per place. [2023-11-29 01:04:05,424 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 35 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-11-29 01:04:05,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 251 flow [2023-11-29 01:04:05,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:04:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:04:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2023-11-29 01:04:05,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2023-11-29 01:04:05,425 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 76 transitions. [2023-11-29 01:04:05,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 76 transitions. [2023-11-29 01:04:05,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:05,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 76 transitions. [2023-11-29 01:04:05,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2023-11-29 01:04:05,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2023-11-29 01:04:05,428 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2023-11-29 01:04:05,428 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 137 flow. Second operand 4 states and 76 transitions. [2023-11-29 01:04:05,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 251 flow [2023-11-29 01:04:05,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 251 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:04:05,431 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 141 flow [2023-11-29 01:04:05,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-11-29 01:04:05,432 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2023-11-29 01:04:05,432 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 141 flow [2023-11-29 01:04:05,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-11-29 01:04:05,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:05,433 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:05,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:04:05,433 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:05,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:05,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1125820057, now seen corresponding path program 1 times [2023-11-29 01:04:05,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:05,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222086419] [2023-11-29 01:04:05,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:05,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:05,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:05,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222086419] [2023-11-29 01:04:05,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222086419] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:04:05,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448427934] [2023-11-29 01:04:05,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:05,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:05,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:05,536 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:05,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:04:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:05,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:04:05,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:05,665 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:05,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:05,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448427934] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:04:05,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:04:05,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-29 01:04:05,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832326203] [2023-11-29 01:04:05,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:04:05,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:04:05,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:05,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:04:05,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:04:05,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-29 01:04:05,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 141 flow. Second operand has 16 states, 16 states have (on average 12.25) internal successors, (196), 16 states have internal predecessors, (196), 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) [2023-11-29 01:04:05,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:05,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-29 01:04:05,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:05,944 INFO L124 PetriNetUnfolderBase]: 33/146 cut-off events. [2023-11-29 01:04:05,944 INFO L125 PetriNetUnfolderBase]: For 79/80 co-relation queries the response was YES. [2023-11-29 01:04:05,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 146 events. 33/146 cut-off events. For 79/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 491 event pairs, 32 based on Foata normal form. 4/144 useless extension candidates. Maximal degree in co-relation 321. Up to 85 conditions per place. [2023-11-29 01:04:05,946 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 18 selfloop transitions, 15 changer transitions 0/43 dead transitions. [2023-11-29 01:04:05,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 43 transitions, 255 flow [2023-11-29 01:04:05,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:04:05,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 01:04:05,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 200 transitions. [2023-11-29 01:04:05,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2023-11-29 01:04:05,948 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 200 transitions. [2023-11-29 01:04:05,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 200 transitions. [2023-11-29 01:04:05,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:05,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 200 transitions. [2023-11-29 01:04:05,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 13.333333333333334) internal successors, (200), 15 states have internal predecessors, (200), 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) [2023-11-29 01:04:05,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 31.0) internal successors, (496), 16 states have internal predecessors, (496), 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) [2023-11-29 01:04:05,952 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 31.0) internal successors, (496), 16 states have internal predecessors, (496), 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) [2023-11-29 01:04:05,952 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 141 flow. Second operand 15 states and 200 transitions. [2023-11-29 01:04:05,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 43 transitions, 255 flow [2023-11-29 01:04:05,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 43 transitions, 249 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:04:05,956 INFO L231 Difference]: Finished difference. Result has 64 places, 43 transitions, 232 flow [2023-11-29 01:04:05,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=232, PETRI_PLACES=64, PETRI_TRANSITIONS=43} [2023-11-29 01:04:05,957 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2023-11-29 01:04:05,957 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 43 transitions, 232 flow [2023-11-29 01:04:05,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.25) internal successors, (196), 16 states have internal predecessors, (196), 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) [2023-11-29 01:04:05,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:05,958 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:05,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:04:06,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:06,158 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:06,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:06,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1103996889, now seen corresponding path program 2 times [2023-11-29 01:04:06,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:06,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050952989] [2023-11-29 01:04:06,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:06,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:06,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:06,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050952989] [2023-11-29 01:04:06,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050952989] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:04:06,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151042242] [2023-11-29 01:04:06,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:04:06,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:06,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:06,411 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:06,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:04:06,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:04:06,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:04:06,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:04:06,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:06,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-29 01:04:06,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-11-29 01:04:06,584 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 01:04:06,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:04:06,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151042242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:06,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:04:06,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [16] total 18 [2023-11-29 01:04:06,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759034522] [2023-11-29 01:04:06,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:06,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:04:06,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:06,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:04:06,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:04:06,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-29 01:04:06,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 43 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-11-29 01:04:06,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:06,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-29 01:04:06,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:06,700 INFO L124 PetriNetUnfolderBase]: 37/139 cut-off events. [2023-11-29 01:04:06,700 INFO L125 PetriNetUnfolderBase]: For 111/113 co-relation queries the response was YES. [2023-11-29 01:04:06,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 139 events. 37/139 cut-off events. For 111/113 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 406 event pairs, 12 based on Foata normal form. 10/146 useless extension candidates. Maximal degree in co-relation 310. Up to 53 conditions per place. [2023-11-29 01:04:06,702 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 41 selfloop transitions, 5 changer transitions 1/54 dead transitions. [2023-11-29 01:04:06,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 54 transitions, 346 flow [2023-11-29 01:04:06,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:04:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:04:06,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2023-11-29 01:04:06,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5870967741935483 [2023-11-29 01:04:06,703 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 91 transitions. [2023-11-29 01:04:06,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 91 transitions. [2023-11-29 01:04:06,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:06,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 91 transitions. [2023-11-29 01:04:06,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:04:06,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 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) [2023-11-29 01:04:06,705 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 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) [2023-11-29 01:04:06,705 INFO L175 Difference]: Start difference. First operand has 64 places, 43 transitions, 232 flow. Second operand 5 states and 91 transitions. [2023-11-29 01:04:06,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 54 transitions, 346 flow [2023-11-29 01:04:06,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 54 transitions, 324 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-11-29 01:04:06,710 INFO L231 Difference]: Finished difference. Result has 63 places, 41 transitions, 210 flow [2023-11-29 01:04:06,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=63, PETRI_TRANSITIONS=41} [2023-11-29 01:04:06,711 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2023-11-29 01:04:06,711 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 41 transitions, 210 flow [2023-11-29 01:04:06,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-11-29 01:04:06,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:06,711 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:06,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:04:06,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 01:04:06,916 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:06,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:06,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1096585797, now seen corresponding path program 1 times [2023-11-29 01:04:06,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:06,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498039645] [2023-11-29 01:04:06,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:06,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:06,989 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 01:04:06,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:06,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498039645] [2023-11-29 01:04:06,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498039645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:06,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:06,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:04:06,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397677676] [2023-11-29 01:04:06,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:06,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:04:06,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:06,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:04:06,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:04:06,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-29 01:04:06,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 41 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-11-29 01:04:06,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:06,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-29 01:04:06,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:07,085 INFO L124 PetriNetUnfolderBase]: 33/130 cut-off events. [2023-11-29 01:04:07,085 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2023-11-29 01:04:07,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 130 events. 33/130 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 370 event pairs, 14 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 312. Up to 58 conditions per place. [2023-11-29 01:04:07,087 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 41 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-11-29 01:04:07,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 52 transitions, 342 flow [2023-11-29 01:04:07,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:04:07,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:04:07,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2023-11-29 01:04:07,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6048387096774194 [2023-11-29 01:04:07,088 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 75 transitions. [2023-11-29 01:04:07,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 75 transitions. [2023-11-29 01:04:07,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:07,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 75 transitions. [2023-11-29 01:04:07,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2023-11-29 01:04:07,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2023-11-29 01:04:07,089 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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) [2023-11-29 01:04:07,090 INFO L175 Difference]: Start difference. First operand has 63 places, 41 transitions, 210 flow. Second operand 4 states and 75 transitions. [2023-11-29 01:04:07,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 52 transitions, 342 flow [2023-11-29 01:04:07,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 52 transitions, 320 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-29 01:04:07,093 INFO L231 Difference]: Finished difference. Result has 61 places, 40 transitions, 202 flow [2023-11-29 01:04:07,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=61, PETRI_TRANSITIONS=40} [2023-11-29 01:04:07,094 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2023-11-29 01:04:07,094 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 40 transitions, 202 flow [2023-11-29 01:04:07,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-11-29 01:04:07,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:07,094 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:07,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:04:07,095 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:07,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:07,095 INFO L85 PathProgramCache]: Analyzing trace with hash 365578922, now seen corresponding path program 1 times [2023-11-29 01:04:07,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:07,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586378025] [2023-11-29 01:04:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:07,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:07,231 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 01:04:07,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:07,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586378025] [2023-11-29 01:04:07,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586378025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:07,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:07,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:04:07,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657692725] [2023-11-29 01:04:07,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:07,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:04:07,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:07,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:04:07,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:04:07,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-29 01:04:07,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 40 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2023-11-29 01:04:07,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:07,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-29 01:04:07,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:07,343 INFO L124 PetriNetUnfolderBase]: 36/136 cut-off events. [2023-11-29 01:04:07,343 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-29 01:04:07,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 136 events. 36/136 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 379 event pairs, 8 based on Foata normal form. 14/150 useless extension candidates. Maximal degree in co-relation 273. Up to 57 conditions per place. [2023-11-29 01:04:07,344 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 40 selfloop transitions, 6 changer transitions 4/56 dead transitions. [2023-11-29 01:04:07,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 56 transitions, 352 flow [2023-11-29 01:04:07,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:04:07,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:04:07,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2023-11-29 01:04:07,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2023-11-29 01:04:07,345 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 107 transitions. [2023-11-29 01:04:07,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 107 transitions. [2023-11-29 01:04:07,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:07,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 107 transitions. [2023-11-29 01:04:07,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:07,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 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) [2023-11-29 01:04:07,347 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 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) [2023-11-29 01:04:07,347 INFO L175 Difference]: Start difference. First operand has 61 places, 40 transitions, 202 flow. Second operand 6 states and 107 transitions. [2023-11-29 01:04:07,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 56 transitions, 352 flow [2023-11-29 01:04:07,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 340 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:04:07,350 INFO L231 Difference]: Finished difference. Result has 67 places, 43 transitions, 237 flow [2023-11-29 01:04:07,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=67, PETRI_TRANSITIONS=43} [2023-11-29 01:04:07,351 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2023-11-29 01:04:07,351 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 43 transitions, 237 flow [2023-11-29 01:04:07,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2023-11-29 01:04:07,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:07,352 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:07,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:04:07,352 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:07,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:07,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1026992622, now seen corresponding path program 1 times [2023-11-29 01:04:07,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:07,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605065815] [2023-11-29 01:04:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:07,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:07,629 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:07,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:07,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605065815] [2023-11-29 01:04:07,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605065815] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:04:07,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897361505] [2023-11-29 01:04:07,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:07,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:07,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:07,633 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:07,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:04:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:07,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:04:07,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:07,808 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:07,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:08,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897361505] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:04:08,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:04:08,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2023-11-29 01:04:08,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67909951] [2023-11-29 01:04:08,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:04:08,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 01:04:08,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:08,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 01:04:08,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:04:08,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-29 01:04:08,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 43 transitions, 237 flow. Second operand has 23 states, 23 states have (on average 12.478260869565217) internal successors, (287), 23 states have internal predecessors, (287), 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) [2023-11-29 01:04:08,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:08,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-29 01:04:08,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:08,245 INFO L124 PetriNetUnfolderBase]: 32/135 cut-off events. [2023-11-29 01:04:08,245 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-11-29 01:04:08,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 135 events. 32/135 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 326 event pairs, 28 based on Foata normal form. 3/137 useless extension candidates. Maximal degree in co-relation 377. Up to 81 conditions per place. [2023-11-29 01:04:08,247 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 20 selfloop transitions, 21 changer transitions 0/49 dead transitions. [2023-11-29 01:04:08,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 49 transitions, 373 flow [2023-11-29 01:04:08,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:04:08,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 01:04:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 271 transitions. [2023-11-29 01:04:08,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4162826420890937 [2023-11-29 01:04:08,250 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 271 transitions. [2023-11-29 01:04:08,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 271 transitions. [2023-11-29 01:04:08,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:08,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 271 transitions. [2023-11-29 01:04:08,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 12.904761904761905) internal successors, (271), 21 states have internal predecessors, (271), 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) [2023-11-29 01:04:08,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 31.0) internal successors, (682), 22 states have internal predecessors, (682), 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) [2023-11-29 01:04:08,254 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 31.0) internal successors, (682), 22 states have internal predecessors, (682), 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) [2023-11-29 01:04:08,254 INFO L175 Difference]: Start difference. First operand has 67 places, 43 transitions, 237 flow. Second operand 21 states and 271 transitions. [2023-11-29 01:04:08,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 49 transitions, 373 flow [2023-11-29 01:04:08,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 49 transitions, 365 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-29 01:04:08,257 INFO L231 Difference]: Finished difference. Result has 87 places, 49 transitions, 340 flow [2023-11-29 01:04:08,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=340, PETRI_PLACES=87, PETRI_TRANSITIONS=49} [2023-11-29 01:04:08,258 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 54 predicate places. [2023-11-29 01:04:08,258 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 49 transitions, 340 flow [2023-11-29 01:04:08,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.478260869565217) internal successors, (287), 23 states have internal predecessors, (287), 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) [2023-11-29 01:04:08,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:08,259 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:08,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:04:08,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 01:04:08,465 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:08,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:08,465 INFO L85 PathProgramCache]: Analyzing trace with hash 448683575, now seen corresponding path program 2 times [2023-11-29 01:04:08,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:08,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602683258] [2023-11-29 01:04:08,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:08,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 01:04:08,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:08,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602683258] [2023-11-29 01:04:08,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602683258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:08,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:08,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:04:08,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137326955] [2023-11-29 01:04:08,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:08,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:04:08,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:08,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:04:08,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:04:08,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2023-11-29 01:04:08,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 49 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2023-11-29 01:04:08,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:08,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2023-11-29 01:04:08,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:09,000 INFO L124 PetriNetUnfolderBase]: 49/181 cut-off events. [2023-11-29 01:04:09,000 INFO L125 PetriNetUnfolderBase]: For 186/188 co-relation queries the response was YES. [2023-11-29 01:04:09,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 181 events. 49/181 cut-off events. For 186/188 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 586 event pairs, 10 based on Foata normal form. 5/186 useless extension candidates. Maximal degree in co-relation 376. Up to 45 conditions per place. [2023-11-29 01:04:09,001 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 57 selfloop transitions, 10 changer transitions 2/73 dead transitions. [2023-11-29 01:04:09,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 73 transitions, 545 flow [2023-11-29 01:04:09,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:04:09,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:04:09,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2023-11-29 01:04:09,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45483870967741935 [2023-11-29 01:04:09,003 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 141 transitions. [2023-11-29 01:04:09,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 141 transitions. [2023-11-29 01:04:09,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:09,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 141 transitions. [2023-11-29 01:04:09,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 14.1) internal successors, (141), 10 states have internal predecessors, (141), 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) [2023-11-29 01:04:09,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 31.0) internal successors, (341), 11 states have internal predecessors, (341), 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) [2023-11-29 01:04:09,005 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 31.0) internal successors, (341), 11 states have internal predecessors, (341), 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) [2023-11-29 01:04:09,005 INFO L175 Difference]: Start difference. First operand has 87 places, 49 transitions, 340 flow. Second operand 10 states and 141 transitions. [2023-11-29 01:04:09,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 73 transitions, 545 flow [2023-11-29 01:04:09,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 73 transitions, 496 flow, removed 4 selfloop flow, removed 13 redundant places. [2023-11-29 01:04:09,009 INFO L231 Difference]: Finished difference. Result has 88 places, 53 transitions, 355 flow [2023-11-29 01:04:09,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=355, PETRI_PLACES=88, PETRI_TRANSITIONS=53} [2023-11-29 01:04:09,010 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 55 predicate places. [2023-11-29 01:04:09,010 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 53 transitions, 355 flow [2023-11-29 01:04:09,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2023-11-29 01:04:09,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:09,011 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:09,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:04:09,011 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:09,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:09,011 INFO L85 PathProgramCache]: Analyzing trace with hash -636989271, now seen corresponding path program 3 times [2023-11-29 01:04:09,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:09,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750168970] [2023-11-29 01:04:09,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:09,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:09,281 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 01:04:09,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:09,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750168970] [2023-11-29 01:04:09,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750168970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:09,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:09,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:04:09,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505498175] [2023-11-29 01:04:09,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:09,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:04:09,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:09,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:04:09,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:04:09,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2023-11-29 01:04:09,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 53 transitions, 355 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2023-11-29 01:04:09,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:09,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2023-11-29 01:04:09,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:09,551 INFO L124 PetriNetUnfolderBase]: 55/206 cut-off events. [2023-11-29 01:04:09,551 INFO L125 PetriNetUnfolderBase]: For 340/343 co-relation queries the response was YES. [2023-11-29 01:04:09,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 206 events. 55/206 cut-off events. For 340/343 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 742 event pairs, 16 based on Foata normal form. 6/212 useless extension candidates. Maximal degree in co-relation 554. Up to 60 conditions per place. [2023-11-29 01:04:09,554 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 59 selfloop transitions, 13 changer transitions 1/77 dead transitions. [2023-11-29 01:04:09,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 77 transitions, 573 flow [2023-11-29 01:04:09,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:04:09,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 01:04:09,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2023-11-29 01:04:09,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327956989247312 [2023-11-29 01:04:09,556 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 161 transitions. [2023-11-29 01:04:09,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 161 transitions. [2023-11-29 01:04:09,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:09,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 161 transitions. [2023-11-29 01:04:09,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 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) [2023-11-29 01:04:09,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 31.0) internal successors, (403), 13 states have internal predecessors, (403), 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) [2023-11-29 01:04:09,558 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 31.0) internal successors, (403), 13 states have internal predecessors, (403), 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) [2023-11-29 01:04:09,558 INFO L175 Difference]: Start difference. First operand has 88 places, 53 transitions, 355 flow. Second operand 12 states and 161 transitions. [2023-11-29 01:04:09,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 77 transitions, 573 flow [2023-11-29 01:04:09,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 77 transitions, 558 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 01:04:09,563 INFO L231 Difference]: Finished difference. Result has 98 places, 56 transitions, 406 flow [2023-11-29 01:04:09,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=406, PETRI_PLACES=98, PETRI_TRANSITIONS=56} [2023-11-29 01:04:09,564 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 65 predicate places. [2023-11-29 01:04:09,564 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 56 transitions, 406 flow [2023-11-29 01:04:09,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2023-11-29 01:04:09,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:09,564 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:09,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:04:09,565 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:09,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:09,565 INFO L85 PathProgramCache]: Analyzing trace with hash -938762340, now seen corresponding path program 1 times [2023-11-29 01:04:09,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:09,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061574394] [2023-11-29 01:04:09,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:09,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:09,857 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 01:04:09,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:09,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061574394] [2023-11-29 01:04:09,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061574394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:09,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:09,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:04:09,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640586398] [2023-11-29 01:04:09,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:09,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:04:09,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:09,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:04:09,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:04:09,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2023-11-29 01:04:09,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 56 transitions, 406 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2023-11-29 01:04:09,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:09,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2023-11-29 01:04:09,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:10,068 INFO L124 PetriNetUnfolderBase]: 53/195 cut-off events. [2023-11-29 01:04:10,069 INFO L125 PetriNetUnfolderBase]: For 446/449 co-relation queries the response was YES. [2023-11-29 01:04:10,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 195 events. 53/195 cut-off events. For 446/449 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 692 event pairs, 10 based on Foata normal form. 6/201 useless extension candidates. Maximal degree in co-relation 564. Up to 67 conditions per place. [2023-11-29 01:04:10,070 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 61 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2023-11-29 01:04:10,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 77 transitions, 641 flow [2023-11-29 01:04:10,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:04:10,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:04:10,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2023-11-29 01:04:10,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551971326164875 [2023-11-29 01:04:10,072 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 127 transitions. [2023-11-29 01:04:10,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 127 transitions. [2023-11-29 01:04:10,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:10,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 127 transitions. [2023-11-29 01:04:10,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 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) [2023-11-29 01:04:10,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 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) [2023-11-29 01:04:10,074 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 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) [2023-11-29 01:04:10,074 INFO L175 Difference]: Start difference. First operand has 98 places, 56 transitions, 406 flow. Second operand 9 states and 127 transitions. [2023-11-29 01:04:10,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 77 transitions, 641 flow [2023-11-29 01:04:10,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 77 transitions, 589 flow, removed 8 selfloop flow, removed 10 redundant places. [2023-11-29 01:04:10,079 INFO L231 Difference]: Finished difference. Result has 93 places, 55 transitions, 381 flow [2023-11-29 01:04:10,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=381, PETRI_PLACES=93, PETRI_TRANSITIONS=55} [2023-11-29 01:04:10,080 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 60 predicate places. [2023-11-29 01:04:10,080 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 55 transitions, 381 flow [2023-11-29 01:04:10,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2023-11-29 01:04:10,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:10,080 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:10,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:04:10,081 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:10,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:10,081 INFO L85 PathProgramCache]: Analyzing trace with hash -63812779, now seen corresponding path program 4 times [2023-11-29 01:04:10,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:10,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769148753] [2023-11-29 01:04:10,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:10,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 01:04:10,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:10,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769148753] [2023-11-29 01:04:10,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769148753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:10,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:10,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:04:10,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408243320] [2023-11-29 01:04:10,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:10,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:04:10,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:10,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:04:10,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:04:10,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2023-11-29 01:04:10,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 55 transitions, 381 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2023-11-29 01:04:10,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:10,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2023-11-29 01:04:10,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:10,538 INFO L124 PetriNetUnfolderBase]: 51/194 cut-off events. [2023-11-29 01:04:10,539 INFO L125 PetriNetUnfolderBase]: For 335/338 co-relation queries the response was YES. [2023-11-29 01:04:10,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 194 events. 51/194 cut-off events. For 335/338 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 677 event pairs, 4 based on Foata normal form. 6/200 useless extension candidates. Maximal degree in co-relation 514. Up to 70 conditions per place. [2023-11-29 01:04:10,540 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 50 selfloop transitions, 14 changer transitions 0/68 dead transitions. [2023-11-29 01:04:10,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 68 transitions, 535 flow [2023-11-29 01:04:10,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:04:10,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:04:10,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2023-11-29 01:04:10,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2023-11-29 01:04:10,542 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 131 transitions. [2023-11-29 01:04:10,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 131 transitions. [2023-11-29 01:04:10,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:10,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 131 transitions. [2023-11-29 01:04:10,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 13.1) internal successors, (131), 10 states have internal predecessors, (131), 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) [2023-11-29 01:04:10,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 31.0) internal successors, (341), 11 states have internal predecessors, (341), 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) [2023-11-29 01:04:10,544 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 31.0) internal successors, (341), 11 states have internal predecessors, (341), 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) [2023-11-29 01:04:10,544 INFO L175 Difference]: Start difference. First operand has 93 places, 55 transitions, 381 flow. Second operand 10 states and 131 transitions. [2023-11-29 01:04:10,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 68 transitions, 535 flow [2023-11-29 01:04:10,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 68 transitions, 504 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-11-29 01:04:10,560 INFO L231 Difference]: Finished difference. Result has 93 places, 54 transitions, 374 flow [2023-11-29 01:04:10,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=374, PETRI_PLACES=93, PETRI_TRANSITIONS=54} [2023-11-29 01:04:10,561 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 60 predicate places. [2023-11-29 01:04:10,561 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 54 transitions, 374 flow [2023-11-29 01:04:10,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2023-11-29 01:04:10,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:10,561 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:10,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:04:10,561 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:10,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:10,562 INFO L85 PathProgramCache]: Analyzing trace with hash -567084704, now seen corresponding path program 1 times [2023-11-29 01:04:10,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:10,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613702488] [2023-11-29 01:04:10,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:10,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 01:04:10,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:10,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613702488] [2023-11-29 01:04:10,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613702488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:10,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:10,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:04:10,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544056608] [2023-11-29 01:04:10,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:10,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:04:10,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:10,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:04:10,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:04:10,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2023-11-29 01:04:10,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 54 transitions, 374 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2023-11-29 01:04:10,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:10,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2023-11-29 01:04:10,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:11,001 INFO L124 PetriNetUnfolderBase]: 49/189 cut-off events. [2023-11-29 01:04:11,001 INFO L125 PetriNetUnfolderBase]: For 319/322 co-relation queries the response was YES. [2023-11-29 01:04:11,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 189 events. 49/189 cut-off events. For 319/322 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 639 event pairs, 18 based on Foata normal form. 6/195 useless extension candidates. Maximal degree in co-relation 478. Up to 79 conditions per place. [2023-11-29 01:04:11,003 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 47 selfloop transitions, 7 changer transitions 11/69 dead transitions. [2023-11-29 01:04:11,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 69 transitions, 532 flow [2023-11-29 01:04:11,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:04:11,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 01:04:11,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2023-11-29 01:04:11,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2023-11-29 01:04:11,004 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 116 transitions. [2023-11-29 01:04:11,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 116 transitions. [2023-11-29 01:04:11,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:11,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 116 transitions. [2023-11-29 01:04:11,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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) [2023-11-29 01:04:11,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 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) [2023-11-29 01:04:11,006 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 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) [2023-11-29 01:04:11,006 INFO L175 Difference]: Start difference. First operand has 93 places, 54 transitions, 374 flow. Second operand 8 states and 116 transitions. [2023-11-29 01:04:11,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 69 transitions, 532 flow [2023-11-29 01:04:11,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 69 transitions, 496 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-11-29 01:04:11,011 INFO L231 Difference]: Finished difference. Result has 90 places, 50 transitions, 322 flow [2023-11-29 01:04:11,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=322, PETRI_PLACES=90, PETRI_TRANSITIONS=50} [2023-11-29 01:04:11,011 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 57 predicate places. [2023-11-29 01:04:11,011 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 50 transitions, 322 flow [2023-11-29 01:04:11,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2023-11-29 01:04:11,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:11,012 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:11,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 01:04:11,012 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:11,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:11,012 INFO L85 PathProgramCache]: Analyzing trace with hash 963138776, now seen corresponding path program 1 times [2023-11-29 01:04:11,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:11,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901420213] [2023-11-29 01:04:11,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:11,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 01:04:11,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:11,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901420213] [2023-11-29 01:04:11,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901420213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:11,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:11,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:04:11,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759761753] [2023-11-29 01:04:11,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:11,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:04:11,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:11,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:04:11,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:04:11,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2023-11-29 01:04:11,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 50 transitions, 322 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2023-11-29 01:04:11,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:11,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2023-11-29 01:04:11,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:11,435 INFO L124 PetriNetUnfolderBase]: 37/153 cut-off events. [2023-11-29 01:04:11,435 INFO L125 PetriNetUnfolderBase]: For 213/215 co-relation queries the response was YES. [2023-11-29 01:04:11,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 153 events. 37/153 cut-off events. For 213/215 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 420 event pairs, 14 based on Foata normal form. 5/158 useless extension candidates. Maximal degree in co-relation 343. Up to 54 conditions per place. [2023-11-29 01:04:11,436 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 36 selfloop transitions, 5 changer transitions 16/61 dead transitions. [2023-11-29 01:04:11,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 61 transitions, 456 flow [2023-11-29 01:04:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:04:11,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:04:11,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2023-11-29 01:04:11,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2023-11-29 01:04:11,438 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 118 transitions. [2023-11-29 01:04:11,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 118 transitions. [2023-11-29 01:04:11,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:11,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 118 transitions. [2023-11-29 01:04:11,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 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) [2023-11-29 01:04:11,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 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) [2023-11-29 01:04:11,440 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 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) [2023-11-29 01:04:11,440 INFO L175 Difference]: Start difference. First operand has 90 places, 50 transitions, 322 flow. Second operand 9 states and 118 transitions. [2023-11-29 01:04:11,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 61 transitions, 456 flow [2023-11-29 01:04:11,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 61 transitions, 435 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-29 01:04:11,444 INFO L231 Difference]: Finished difference. Result has 85 places, 43 transitions, 283 flow [2023-11-29 01:04:11,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=283, PETRI_PLACES=85, PETRI_TRANSITIONS=43} [2023-11-29 01:04:11,444 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 52 predicate places. [2023-11-29 01:04:11,445 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 43 transitions, 283 flow [2023-11-29 01:04:11,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2023-11-29 01:04:11,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:11,445 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:11,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 01:04:11,445 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:11,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:11,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1000911214, now seen corresponding path program 2 times [2023-11-29 01:04:11,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:11,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438170059] [2023-11-29 01:04:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:11,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 01:04:11,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:11,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438170059] [2023-11-29 01:04:11,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438170059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:11,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:11,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:04:11,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72557835] [2023-11-29 01:04:11,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:11,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:04:11,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:11,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:04:11,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:04:11,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2023-11-29 01:04:11,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 43 transitions, 283 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2023-11-29 01:04:11,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:11,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2023-11-29 01:04:11,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:11,861 INFO L124 PetriNetUnfolderBase]: 19/99 cut-off events. [2023-11-29 01:04:11,861 INFO L125 PetriNetUnfolderBase]: For 154/156 co-relation queries the response was YES. [2023-11-29 01:04:11,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 99 events. 19/99 cut-off events. For 154/156 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 186 event pairs, 10 based on Foata normal form. 5/104 useless extension candidates. Maximal degree in co-relation 213. Up to 29 conditions per place. [2023-11-29 01:04:11,862 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 32 selfloop transitions, 3 changer transitions 11/50 dead transitions. [2023-11-29 01:04:11,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 50 transitions, 387 flow [2023-11-29 01:04:11,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:04:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 01:04:11,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2023-11-29 01:04:11,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2023-11-29 01:04:11,864 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 91 transitions. [2023-11-29 01:04:11,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 91 transitions. [2023-11-29 01:04:11,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:11,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 91 transitions. [2023-11-29 01:04:11,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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) [2023-11-29 01:04:11,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 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) [2023-11-29 01:04:11,865 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 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) [2023-11-29 01:04:11,866 INFO L175 Difference]: Start difference. First operand has 85 places, 43 transitions, 283 flow. Second operand 7 states and 91 transitions. [2023-11-29 01:04:11,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 50 transitions, 387 flow [2023-11-29 01:04:11,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 50 transitions, 360 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-29 01:04:11,869 INFO L231 Difference]: Finished difference. Result has 71 places, 39 transitions, 242 flow [2023-11-29 01:04:11,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=242, PETRI_PLACES=71, PETRI_TRANSITIONS=39} [2023-11-29 01:04:11,870 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 38 predicate places. [2023-11-29 01:04:11,870 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 39 transitions, 242 flow [2023-11-29 01:04:11,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2023-11-29 01:04:11,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:11,870 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:11,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 01:04:11,871 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 01:04:11,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:11,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1978195886, now seen corresponding path program 3 times [2023-11-29 01:04:11,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:11,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640139550] [2023-11-29 01:04:11,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:11,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 01:04:12,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:12,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640139550] [2023-11-29 01:04:12,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640139550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:12,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:12,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:04:12,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588382647] [2023-11-29 01:04:12,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:12,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:04:12,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:12,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:04:12,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:04:12,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2023-11-29 01:04:12,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 39 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2023-11-29 01:04:12,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:12,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2023-11-29 01:04:12,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:12,253 INFO L124 PetriNetUnfolderBase]: 9/67 cut-off events. [2023-11-29 01:04:12,253 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-11-29 01:04:12,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 67 events. 9/67 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 3/70 useless extension candidates. Maximal degree in co-relation 185. Up to 26 conditions per place. [2023-11-29 01:04:12,253 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-11-29 01:04:12,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 42 transitions, 321 flow [2023-11-29 01:04:12,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:04:12,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 01:04:12,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2023-11-29 01:04:12,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824884792626728 [2023-11-29 01:04:12,255 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 83 transitions. [2023-11-29 01:04:12,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 83 transitions. [2023-11-29 01:04:12,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:12,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 83 transitions. [2023-11-29 01:04:12,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2023-11-29 01:04:12,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 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) [2023-11-29 01:04:12,256 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 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) [2023-11-29 01:04:12,256 INFO L175 Difference]: Start difference. First operand has 71 places, 39 transitions, 242 flow. Second operand 7 states and 83 transitions. [2023-11-29 01:04:12,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 42 transitions, 321 flow [2023-11-29 01:04:12,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 42 transitions, 307 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-11-29 01:04:12,259 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2023-11-29 01:04:12,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2023-11-29 01:04:12,260 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2023-11-29 01:04:12,260 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2023-11-29 01:04:12,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2023-11-29 01:04:12,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-11-29 01:04:12,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-29 01:04:12,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-29 01:04:12,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-29 01:04:12,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2023-11-29 01:04:12,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-29 01:04:12,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-29 01:04:12,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-29 01:04:12,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-29 01:04:12,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-29 01:04:12,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-29 01:04:12,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-29 01:04:12,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-29 01:04:12,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 01:04:12,265 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:12,270 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 01:04:12,270 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 01:04:12,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:04:12 BasicIcfg [2023-11-29 01:04:12,275 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 01:04:12,276 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:04:12,276 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:04:12,276 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:04:12,276 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:04:03" (3/4) ... [2023-11-29 01:04:12,278 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 01:04:12,281 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-29 01:04:12,285 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2023-11-29 01:04:12,285 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-29 01:04:12,285 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 01:04:12,361 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 01:04:12,361 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 01:04:12,361 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:04:12,362 INFO L158 Benchmark]: Toolchain (without parser) took 10345.19ms. Allocated memory was 159.4MB in the beginning and 249.6MB in the end (delta: 90.2MB). Free memory was 118.4MB in the beginning and 195.2MB in the end (delta: -76.7MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2023-11-29 01:04:12,362 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:04:12,363 INFO L158 Benchmark]: CACSL2BoogieTranslator took 495.62ms. Allocated memory is still 159.4MB. Free memory was 118.4MB in the beginning and 90.5MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-29 01:04:12,363 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.96ms. Allocated memory is still 159.4MB. Free memory was 90.5MB in the beginning and 87.7MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 01:04:12,363 INFO L158 Benchmark]: Boogie Preprocessor took 40.95ms. Allocated memory is still 159.4MB. Free memory was 87.7MB in the beginning and 85.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:04:12,364 INFO L158 Benchmark]: RCFGBuilder took 502.05ms. Allocated memory is still 159.4MB. Free memory was 85.6MB in the beginning and 127.3MB in the end (delta: -41.7MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2023-11-29 01:04:12,364 INFO L158 Benchmark]: TraceAbstraction took 9168.31ms. Allocated memory was 159.4MB in the beginning and 249.6MB in the end (delta: 90.2MB). Free memory was 126.2MB in the beginning and 199.3MB in the end (delta: -73.1MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2023-11-29 01:04:12,364 INFO L158 Benchmark]: Witness Printer took 85.81ms. Allocated memory is still 249.6MB. Free memory was 199.3MB in the beginning and 195.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 01:04:12,366 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 495.62ms. Allocated memory is still 159.4MB. Free memory was 118.4MB in the beginning and 90.5MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.96ms. Allocated memory is still 159.4MB. Free memory was 90.5MB in the beginning and 87.7MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.95ms. Allocated memory is still 159.4MB. Free memory was 87.7MB in the beginning and 85.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 502.05ms. Allocated memory is still 159.4MB. Free memory was 85.6MB in the beginning and 127.3MB in the end (delta: -41.7MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. * TraceAbstraction took 9168.31ms. Allocated memory was 159.4MB in the beginning and 249.6MB in the end (delta: 90.2MB). Free memory was 126.2MB in the beginning and 199.3MB in the end (delta: -73.1MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * Witness Printer took 85.81ms. Allocated memory is still 249.6MB. Free memory was 199.3MB in the beginning and 195.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 937]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 937]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 944]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 944]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 932]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 932]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 46 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.1s, OverallIterations: 19, TraceHistogramMax: 10, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 596 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 518 mSDsluCounter, 325 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 310 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2128 IncrementalHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 15 mSDtfsCounter, 2128 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 335 GetRequests, 144 SyntacticMatches, 11 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=406occurred in iteration=13, InterpolantAutomatonStates: 150, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 659 NumberOfCodeBlocks, 629 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 694 ConstructedInterpolants, 3 QuantifiedInterpolants, 3781 SizeOfPredicates, 21 NumberOfNonLiveVariables, 473 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 27 InterpolantComputations, 16 PerfectInterpolantSequences, 1397/1728 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 01:04:12,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab1ac94-ddc3-4612-83cd-bfb703de6dca/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE