./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b78a1de0122078b80177387d59eedcdf8d73ccef913955b4bda0200e53e1d3da --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:58:59,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:58:59,649 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 21:58:59,655 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:58:59,660 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:58:59,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:58:59,704 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:58:59,705 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:58:59,706 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:58:59,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:58:59,713 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:58:59,713 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:58:59,714 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:58:59,716 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:58:59,716 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:58:59,716 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:58:59,717 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:58:59,717 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:58:59,718 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:58:59,718 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:58:59,718 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:58:59,719 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:58:59,719 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 21:58:59,720 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:58:59,720 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:58:59,720 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:58:59,721 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:58:59,722 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:58:59,722 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:58:59,723 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:58:59,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:58:59,724 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:58:59,725 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:58:59,725 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:58:59,725 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:58:59,725 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:58:59,725 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:58:59,726 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:58:59,726 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:58:59,726 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:58:59,726 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:58:59,727 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_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78a1de0122078b80177387d59eedcdf8d73ccef913955b4bda0200e53e1d3da [2023-11-06 21:58:59,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:59:00,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:59:00,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:59:00,037 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:59:00,037 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:59:00,039 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2023-11-06 21:59:03,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:59:03,624 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:59:03,624 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2023-11-06 21:59:03,638 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/data/06ddd99f8/042d2753e1904b7480d0c830d092da52/FLAG6729594f6 [2023-11-06 21:59:03,667 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/data/06ddd99f8/042d2753e1904b7480d0c830d092da52 [2023-11-06 21:59:03,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:59:03,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:59:03,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:59:03,676 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:59:03,681 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:59:03,682 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:03" (1/1) ... [2023-11-06 21:59:03,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6135b494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:03, skipping insertion in model container [2023-11-06 21:59:03,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:03" (1/1) ... [2023-11-06 21:59:03,720 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:59:03,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:59:04,018 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:59:04,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:59:04,108 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:59:04,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:04 WrapperNode [2023-11-06 21:59:04,108 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:59:04,110 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:59:04,110 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:59:04,110 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:59:04,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:04" (1/1) ... [2023-11-06 21:59:04,148 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:04" (1/1) ... [2023-11-06 21:59:04,198 INFO L138 Inliner]: procedures = 25, calls = 40, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 245 [2023-11-06 21:59:04,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:59:04,199 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:59:04,200 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:59:04,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:59:04,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:04" (1/1) ... [2023-11-06 21:59:04,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:04" (1/1) ... [2023-11-06 21:59:04,227 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:04" (1/1) ... [2023-11-06 21:59:04,227 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:04" (1/1) ... [2023-11-06 21:59:04,249 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:04" (1/1) ... [2023-11-06 21:59:04,253 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:04" (1/1) ... [2023-11-06 21:59:04,255 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:04" (1/1) ... [2023-11-06 21:59:04,257 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:04" (1/1) ... [2023-11-06 21:59:04,261 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:59:04,280 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:59:04,280 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:59:04,280 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:59:04,281 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:04" (1/1) ... [2023-11-06 21:59:04,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:59:04,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:04,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:59:04,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:59:04,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:59:04,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:59:04,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:59:04,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:59:04,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 21:59:04,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 21:59:04,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 21:59:04,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 21:59:04,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:59:04,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:59:04,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:59:04,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:59:04,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:59:04,370 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:59:04,529 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:59:04,532 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:59:05,160 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:59:05,172 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:59:05,172 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 21:59:05,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:05 BoogieIcfgContainer [2023-11-06 21:59:05,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:59:05,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:59:05,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:59:05,182 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:59:05,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:59:03" (1/3) ... [2023-11-06 21:59:05,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dddc87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:05, skipping insertion in model container [2023-11-06 21:59:05,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:04" (2/3) ... [2023-11-06 21:59:05,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dddc87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:05, skipping insertion in model container [2023-11-06 21:59:05,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:05" (3/3) ... [2023-11-06 21:59:05,186 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2023-11-06 21:59:05,195 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:59:05,207 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:59:05,208 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-06 21:59:05,208 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:59:05,440 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 21:59:05,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 330 transitions, 674 flow [2023-11-06 21:59:05,725 INFO L124 PetriNetUnfolderBase]: 25/328 cut-off events. [2023-11-06 21:59:05,725 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:59:05,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 328 events. 25/328 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 640 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 205. Up to 3 conditions per place. [2023-11-06 21:59:05,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 330 transitions, 674 flow [2023-11-06 21:59:05,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 290 transitions, 589 flow [2023-11-06 21:59:05,755 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:59:05,772 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 290 transitions, 589 flow [2023-11-06 21:59:05,776 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 290 transitions, 589 flow [2023-11-06 21:59:05,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 290 transitions, 589 flow [2023-11-06 21:59:05,853 INFO L124 PetriNetUnfolderBase]: 22/290 cut-off events. [2023-11-06 21:59:05,853 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 21:59:05,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 290 events. 22/290 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 481 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 205. Up to 3 conditions per place. [2023-11-06 21:59:05,870 INFO L119 LiptonReduction]: Number of co-enabled transitions 15200 [2023-11-06 21:59:21,998 INFO L134 LiptonReduction]: Checked pairs total: 18095 [2023-11-06 21:59:21,998 INFO L136 LiptonReduction]: Total number of compositions: 372 [2023-11-06 21:59:22,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:59:22,022 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@510c2ee7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:59:22,022 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2023-11-06 21:59:22,026 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:59:22,026 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 21:59:22,026 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:59:22,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:22,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 21:59:22,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:22,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:22,033 INFO L85 PathProgramCache]: Analyzing trace with hash 42124, now seen corresponding path program 1 times [2023-11-06 21:59:22,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:22,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70348759] [2023-11-06 21:59:22,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:22,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:22,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:22,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:22,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70348759] [2023-11-06 21:59:22,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70348759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:22,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:22,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:59:22,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257400961] [2023-11-06 21:59:22,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:22,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:22,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:22,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:22,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:22,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 702 [2023-11-06 21:59:22,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:22,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:22,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 702 [2023-11-06 21:59:22,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:22,769 INFO L124 PetriNetUnfolderBase]: 541/908 cut-off events. [2023-11-06 21:59:22,769 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-06 21:59:22,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 908 events. 541/908 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4112 event pairs, 459 based on Foata normal form. 0/390 useless extension candidates. Maximal degree in co-relation 1728. Up to 906 conditions per place. [2023-11-06 21:59:22,781 INFO L140 encePairwiseOnDemand]: 689/702 looper letters, 40 selfloop transitions, 5 changer transitions 0/45 dead transitions. [2023-11-06 21:59:22,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 189 flow [2023-11-06 21:59:22,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:22,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:22,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 953 transitions. [2023-11-06 21:59:22,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45251661918328584 [2023-11-06 21:59:22,811 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 953 transitions. [2023-11-06 21:59:22,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 953 transitions. [2023-11-06 21:59:22,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:22,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 953 transitions. [2023-11-06 21:59:22,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:22,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:22,843 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:22,845 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 99 flow. Second operand 3 states and 953 transitions. [2023-11-06 21:59:22,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 189 flow [2023-11-06 21:59:22,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 21:59:22,852 INFO L231 Difference]: Finished difference. Result has 44 places, 45 transitions, 130 flow [2023-11-06 21:59:22,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=44, PETRI_TRANSITIONS=45} [2023-11-06 21:59:22,859 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2023-11-06 21:59:22,860 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 45 transitions, 130 flow [2023-11-06 21:59:22,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:22,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:22,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 21:59:22,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:59:22,862 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:22,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:22,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1308877, now seen corresponding path program 1 times [2023-11-06 21:59:22,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:22,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831947490] [2023-11-06 21:59:22,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:22,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:22,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:22,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:22,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831947490] [2023-11-06 21:59:22,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831947490] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:22,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282568355] [2023-11-06 21:59:22,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:22,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:22,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:23,002 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:23,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:59:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:59:23,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:23,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:59:23,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282568355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:23,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:59:23,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-06 21:59:23,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730669804] [2023-11-06 21:59:23,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:23,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:59:23,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:23,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:59:23,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:23,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 702 [2023-11-06 21:59:23,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 45 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:23,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:23,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 702 [2023-11-06 21:59:23,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:23,567 INFO L124 PetriNetUnfolderBase]: 541/906 cut-off events. [2023-11-06 21:59:23,567 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-06 21:59:23,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 906 events. 541/906 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4122 event pairs, 459 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 1819. Up to 898 conditions per place. [2023-11-06 21:59:23,576 INFO L140 encePairwiseOnDemand]: 695/702 looper letters, 37 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2023-11-06 21:59:23,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 208 flow [2023-11-06 21:59:23,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:59:23,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:59:23,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1245 transitions. [2023-11-06 21:59:23,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44337606837606836 [2023-11-06 21:59:23,586 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1245 transitions. [2023-11-06 21:59:23,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1245 transitions. [2023-11-06 21:59:23,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:23,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1245 transitions. [2023-11-06 21:59:23,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:23,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:23,608 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:23,609 INFO L175 Difference]: Start difference. First operand has 44 places, 45 transitions, 130 flow. Second operand 4 states and 1245 transitions. [2023-11-06 21:59:23,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 208 flow [2023-11-06 21:59:23,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:23,612 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 124 flow [2023-11-06 21:59:23,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-11-06 21:59:23,613 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -4 predicate places. [2023-11-06 21:59:23,613 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 124 flow [2023-11-06 21:59:23,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:23,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:23,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 21:59:23,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:23,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:23,823 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:23,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:23,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1308897, now seen corresponding path program 1 times [2023-11-06 21:59:23,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:23,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464665776] [2023-11-06 21:59:23,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:23,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:23,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:23,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464665776] [2023-11-06 21:59:23,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464665776] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:23,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624494375] [2023-11-06 21:59:23,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:23,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:23,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:23,910 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:23,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:59:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:24,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:59:24,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:24,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:24,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624494375] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:24,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:24,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 21:59:24,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533867247] [2023-11-06 21:59:24,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:24,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:59:24,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:24,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:59:24,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:24,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 702 [2023-11-06 21:59:24,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 301.14285714285717) internal successors, (2108), 7 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:24,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:24,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 702 [2023-11-06 21:59:24,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:24,392 INFO L124 PetriNetUnfolderBase]: 547/918 cut-off events. [2023-11-06 21:59:24,393 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-06 21:59:24,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1904 conditions, 918 events. 547/918 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4181 event pairs, 459 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 1819. Up to 907 conditions per place. [2023-11-06 21:59:24,401 INFO L140 encePairwiseOnDemand]: 695/702 looper letters, 38 selfloop transitions, 17 changer transitions 0/55 dead transitions. [2023-11-06 21:59:24,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 294 flow [2023-11-06 21:59:24,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:59:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:59:24,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1861 transitions. [2023-11-06 21:59:24,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44183285849952514 [2023-11-06 21:59:24,410 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1861 transitions. [2023-11-06 21:59:24,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1861 transitions. [2023-11-06 21:59:24,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:24,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1861 transitions. [2023-11-06 21:59:24,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 310.1666666666667) internal successors, (1861), 6 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:24,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 702.0) internal successors, (4914), 7 states have internal predecessors, (4914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:24,433 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 702.0) internal successors, (4914), 7 states have internal predecessors, (4914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:24,434 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 124 flow. Second operand 6 states and 1861 transitions. [2023-11-06 21:59:24,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 294 flow [2023-11-06 21:59:24,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:24,438 INFO L231 Difference]: Finished difference. Result has 49 places, 55 transitions, 240 flow [2023-11-06 21:59:24,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=49, PETRI_TRANSITIONS=55} [2023-11-06 21:59:24,440 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2023-11-06 21:59:24,440 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 55 transitions, 240 flow [2023-11-06 21:59:24,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 301.14285714285717) internal successors, (2108), 7 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:24,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:24,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:59:24,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:24,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:24,650 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:24,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:24,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1258576576, now seen corresponding path program 1 times [2023-11-06 21:59:24,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:24,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452344565] [2023-11-06 21:59:24,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:24,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:24,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:24,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452344565] [2023-11-06 21:59:24,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452344565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:24,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:24,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:59:24,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037702231] [2023-11-06 21:59:24,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:24,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:59:24,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:24,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:59:24,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:59:24,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 702 [2023-11-06 21:59:25,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 55 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:25,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:25,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 702 [2023-11-06 21:59:25,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:25,398 INFO L124 PetriNetUnfolderBase]: 980/1616 cut-off events. [2023-11-06 21:59:25,398 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-11-06 21:59:25,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3387 conditions, 1616 events. 980/1616 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8097 event pairs, 774 based on Foata normal form. 0/722 useless extension candidates. Maximal degree in co-relation 3293. Up to 829 conditions per place. [2023-11-06 21:59:25,415 INFO L140 encePairwiseOnDemand]: 695/702 looper letters, 91 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2023-11-06 21:59:25,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 96 transitions, 580 flow [2023-11-06 21:59:25,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:59:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:59:25,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1244 transitions. [2023-11-06 21:59:25,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.443019943019943 [2023-11-06 21:59:25,421 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1244 transitions. [2023-11-06 21:59:25,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1244 transitions. [2023-11-06 21:59:25,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:25,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1244 transitions. [2023-11-06 21:59:25,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:25,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:25,441 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:25,441 INFO L175 Difference]: Start difference. First operand has 49 places, 55 transitions, 240 flow. Second operand 4 states and 1244 transitions. [2023-11-06 21:59:25,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 96 transitions, 580 flow [2023-11-06 21:59:25,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 96 transitions, 540 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:25,453 INFO L231 Difference]: Finished difference. Result has 53 places, 57 transitions, 243 flow [2023-11-06 21:59:25,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=243, PETRI_PLACES=53, PETRI_TRANSITIONS=57} [2023-11-06 21:59:25,456 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2023-11-06 21:59:25,457 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 57 transitions, 243 flow [2023-11-06 21:59:25,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:25,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:25,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:59:25,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:59:25,459 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:25,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:25,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1258576479, now seen corresponding path program 1 times [2023-11-06 21:59:25,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:25,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162922907] [2023-11-06 21:59:25,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:25,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:25,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:25,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:25,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162922907] [2023-11-06 21:59:25,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162922907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:25,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:25,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:59:25,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459769336] [2023-11-06 21:59:25,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:25,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:25,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:25,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:25,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:25,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 702 [2023-11-06 21:59:25,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 57 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:25,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:25,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 702 [2023-11-06 21:59:25,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:26,494 INFO L124 PetriNetUnfolderBase]: 1796/2946 cut-off events. [2023-11-06 21:59:26,494 INFO L125 PetriNetUnfolderBase]: For 492/492 co-relation queries the response was YES. [2023-11-06 21:59:26,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6321 conditions, 2946 events. 1796/2946 cut-off events. For 492/492 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 16605 event pairs, 1416 based on Foata normal form. 96/1614 useless extension candidates. Maximal degree in co-relation 6235. Up to 1477 conditions per place. [2023-11-06 21:59:26,519 INFO L140 encePairwiseOnDemand]: 694/702 looper letters, 77 selfloop transitions, 10 changer transitions 0/87 dead transitions. [2023-11-06 21:59:26,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 485 flow [2023-11-06 21:59:26,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:59:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:59:26,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1523 transitions. [2023-11-06 21:59:26,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4339031339031339 [2023-11-06 21:59:26,525 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1523 transitions. [2023-11-06 21:59:26,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1523 transitions. [2023-11-06 21:59:26,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:26,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1523 transitions. [2023-11-06 21:59:26,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 304.6) internal successors, (1523), 5 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:26,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:26,544 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:26,545 INFO L175 Difference]: Start difference. First operand has 53 places, 57 transitions, 243 flow. Second operand 5 states and 1523 transitions. [2023-11-06 21:59:26,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 485 flow [2023-11-06 21:59:26,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 87 transitions, 481 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-06 21:59:26,551 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 286 flow [2023-11-06 21:59:26,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2023-11-06 21:59:26,555 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2023-11-06 21:59:26,555 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 286 flow [2023-11-06 21:59:26,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:26,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:26,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 21:59:26,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:59:26,561 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:26,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:26,565 INFO L85 PathProgramCache]: Analyzing trace with hash 361133170, now seen corresponding path program 1 times [2023-11-06 21:59:26,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:26,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436283673] [2023-11-06 21:59:26,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:26,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:26,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:26,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:26,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436283673] [2023-11-06 21:59:26,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436283673] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:26,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355195301] [2023-11-06 21:59:26,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:26,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:26,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:26,781 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:26,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:59:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:26,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:59:26,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:26,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:59:26,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355195301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:26,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:59:26,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-06 21:59:26,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200829710] [2023-11-06 21:59:26,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:26,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:26,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:26,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:26,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:26,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 702 [2023-11-06 21:59:26,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:26,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:26,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 702 [2023-11-06 21:59:26,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:27,446 INFO L124 PetriNetUnfolderBase]: 1513/2509 cut-off events. [2023-11-06 21:59:27,446 INFO L125 PetriNetUnfolderBase]: For 821/821 co-relation queries the response was YES. [2023-11-06 21:59:27,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5446 conditions, 2509 events. 1513/2509 cut-off events. For 821/821 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 13995 event pairs, 1203 based on Foata normal form. 88/1369 useless extension candidates. Maximal degree in co-relation 5356. Up to 2509 conditions per place. [2023-11-06 21:59:27,469 INFO L140 encePairwiseOnDemand]: 698/702 looper letters, 53 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-11-06 21:59:27,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 364 flow [2023-11-06 21:59:27,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:27,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:27,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 957 transitions. [2023-11-06 21:59:27,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4544159544159544 [2023-11-06 21:59:27,474 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 957 transitions. [2023-11-06 21:59:27,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 957 transitions. [2023-11-06 21:59:27,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:27,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 957 transitions. [2023-11-06 21:59:27,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:27,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:27,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:27,483 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 286 flow. Second operand 3 states and 957 transitions. [2023-11-06 21:59:27,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 364 flow [2023-11-06 21:59:27,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 54 transitions, 341 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-06 21:59:27,487 INFO L231 Difference]: Finished difference. Result has 53 places, 54 transitions, 235 flow [2023-11-06 21:59:27,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=53, PETRI_TRANSITIONS=54} [2023-11-06 21:59:27,488 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2023-11-06 21:59:27,488 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 54 transitions, 235 flow [2023-11-06 21:59:27,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:27,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:27,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:27,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:27,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:27,696 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:27,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:27,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2003026068, now seen corresponding path program 1 times [2023-11-06 21:59:27,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:27,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852514161] [2023-11-06 21:59:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:27,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:27,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:27,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852514161] [2023-11-06 21:59:27,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852514161] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:27,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414004094] [2023-11-06 21:59:27,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:27,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:27,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:27,876 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:27,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:59:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:27,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:59:27,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:28,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:28,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414004094] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:28,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:59:28,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 10 [2023-11-06 21:59:28,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365325503] [2023-11-06 21:59:28,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:28,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:28,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:28,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:28,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:59:28,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 702 [2023-11-06 21:59:28,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 54 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 286.4) internal successors, (1432), 5 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:28,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:28,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 702 [2023-11-06 21:59:28,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:28,808 INFO L124 PetriNetUnfolderBase]: 1445/2441 cut-off events. [2023-11-06 21:59:28,808 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2023-11-06 21:59:28,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5120 conditions, 2441 events. 1445/2441 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 14313 event pairs, 612 based on Foata normal form. 68/1281 useless extension candidates. Maximal degree in co-relation 5105. Up to 2321 conditions per place. [2023-11-06 21:59:28,827 INFO L140 encePairwiseOnDemand]: 695/702 looper letters, 56 selfloop transitions, 9 changer transitions 0/65 dead transitions. [2023-11-06 21:59:28,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 380 flow [2023-11-06 21:59:28,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:59:28,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:59:28,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1478 transitions. [2023-11-06 21:59:28,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42108262108262107 [2023-11-06 21:59:28,834 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1478 transitions. [2023-11-06 21:59:28,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1478 transitions. [2023-11-06 21:59:28,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:28,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1478 transitions. [2023-11-06 21:59:28,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 295.6) internal successors, (1478), 5 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:28,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:28,849 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:28,849 INFO L175 Difference]: Start difference. First operand has 53 places, 54 transitions, 235 flow. Second operand 5 states and 1478 transitions. [2023-11-06 21:59:28,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 380 flow [2023-11-06 21:59:28,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 65 transitions, 377 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:28,853 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 252 flow [2023-11-06 21:59:28,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2023-11-06 21:59:28,854 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 10 predicate places. [2023-11-06 21:59:28,854 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 252 flow [2023-11-06 21:59:28,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 286.4) internal successors, (1432), 5 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:28,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:28,855 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 21:59:28,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:29,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:29,062 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:29,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:29,062 INFO L85 PathProgramCache]: Analyzing trace with hash 341060832, now seen corresponding path program 2 times [2023-11-06 21:59:29,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:29,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347374999] [2023-11-06 21:59:29,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:29,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:29,151 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:29,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:29,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347374999] [2023-11-06 21:59:29,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347374999] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:29,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102696392] [2023-11-06 21:59:29,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:59:29,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:29,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:29,159 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:29,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:59:29,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 21:59:29,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:59:29,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:59:29,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:29,276 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 21:59:29,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:59:29,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102696392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:29,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:59:29,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 21:59:29,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651246654] [2023-11-06 21:59:29,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:29,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:29,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:29,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:29,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:59:29,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 702 [2023-11-06 21:59:29,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:29,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:29,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 702 [2023-11-06 21:59:29,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:29,771 INFO L124 PetriNetUnfolderBase]: 1445/2440 cut-off events. [2023-11-06 21:59:29,771 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2023-11-06 21:59:29,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5244 conditions, 2440 events. 1445/2440 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 13842 event pairs, 1179 based on Foata normal form. 1/1213 useless extension candidates. Maximal degree in co-relation 5227. Up to 2435 conditions per place. [2023-11-06 21:59:29,797 INFO L140 encePairwiseOnDemand]: 699/702 looper letters, 46 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2023-11-06 21:59:29,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 346 flow [2023-11-06 21:59:29,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:29,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:29,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 948 transitions. [2023-11-06 21:59:29,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45014245014245013 [2023-11-06 21:59:29,802 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 948 transitions. [2023-11-06 21:59:29,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 948 transitions. [2023-11-06 21:59:29,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:29,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 948 transitions. [2023-11-06 21:59:29,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:29,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:29,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:29,829 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 252 flow. Second operand 3 states and 948 transitions. [2023-11-06 21:59:29,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 346 flow [2023-11-06 21:59:29,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:29,832 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 246 flow [2023-11-06 21:59:29,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2023-11-06 21:59:29,833 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2023-11-06 21:59:29,836 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 246 flow [2023-11-06 21:59:29,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:29,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:29,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 21:59:29,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:30,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:30,050 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:30,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:30,050 INFO L85 PathProgramCache]: Analyzing trace with hash 341709535, now seen corresponding path program 1 times [2023-11-06 21:59:30,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:30,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553284337] [2023-11-06 21:59:30,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:30,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:30,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:30,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:30,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553284337] [2023-11-06 21:59:30,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553284337] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:30,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312389071] [2023-11-06 21:59:30,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:30,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:30,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:30,158 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:30,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 21:59:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:30,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:59:30,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:30,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:30,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:59:30,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312389071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:30,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:59:30,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-06 21:59:30,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501644418] [2023-11-06 21:59:30,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:30,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:59:30,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:30,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:59:30,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:30,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 702 [2023-11-06 21:59:30,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:30,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:30,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 702 [2023-11-06 21:59:30,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:30,869 INFO L124 PetriNetUnfolderBase]: 1400/2349 cut-off events. [2023-11-06 21:59:30,870 INFO L125 PetriNetUnfolderBase]: For 263/263 co-relation queries the response was YES. [2023-11-06 21:59:30,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5005 conditions, 2349 events. 1400/2349 cut-off events. For 263/263 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 13138 event pairs, 1140 based on Foata normal form. 20/1169 useless extension candidates. Maximal degree in co-relation 4987. Up to 2343 conditions per place. [2023-11-06 21:59:30,891 INFO L140 encePairwiseOnDemand]: 698/702 looper letters, 44 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-11-06 21:59:30,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 332 flow [2023-11-06 21:59:30,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:59:30,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:59:30,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1251 transitions. [2023-11-06 21:59:30,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44551282051282054 [2023-11-06 21:59:30,897 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1251 transitions. [2023-11-06 21:59:30,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1251 transitions. [2023-11-06 21:59:30,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:30,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1251 transitions. [2023-11-06 21:59:30,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.75) internal successors, (1251), 4 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:30,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:30,908 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 702.0) internal successors, (3510), 5 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:30,908 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 246 flow. Second operand 4 states and 1251 transitions. [2023-11-06 21:59:30,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 332 flow [2023-11-06 21:59:30,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 50 transitions, 315 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 21:59:30,912 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 227 flow [2023-11-06 21:59:30,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=227, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2023-11-06 21:59:30,913 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 5 predicate places. [2023-11-06 21:59:30,914 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 227 flow [2023-11-06 21:59:30,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:30,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:30,914 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-06 21:59:30,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:31,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:31,121 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:31,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:31,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1689806740, now seen corresponding path program 1 times [2023-11-06 21:59:31,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:31,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917618826] [2023-11-06 21:59:31,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:31,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:31,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:31,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917618826] [2023-11-06 21:59:31,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917618826] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:31,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674060894] [2023-11-06 21:59:31,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:31,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:31,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:31,213 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:31,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 21:59:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:31,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:59:31,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:31,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:31,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:31,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674060894] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:31,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:31,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 21:59:31,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302097422] [2023-11-06 21:59:31,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:31,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 21:59:31,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:31,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 21:59:31,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:59:31,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 702 [2023-11-06 21:59:31,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 227 flow. Second operand has 13 states, 13 states have (on average 301.15384615384613) internal successors, (3915), 13 states have internal predecessors, (3915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:31,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:31,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 702 [2023-11-06 21:59:31,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:32,088 INFO L124 PetriNetUnfolderBase]: 1418/2385 cut-off events. [2023-11-06 21:59:32,088 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2023-11-06 21:59:32,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5152 conditions, 2385 events. 1418/2385 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 13231 event pairs, 1140 based on Foata normal form. 12/1197 useless extension candidates. Maximal degree in co-relation 5137. Up to 2347 conditions per place. [2023-11-06 21:59:32,106 INFO L140 encePairwiseOnDemand]: 696/702 looper letters, 33 selfloop transitions, 41 changer transitions 0/74 dead transitions. [2023-11-06 21:59:32,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 74 transitions, 549 flow [2023-11-06 21:59:32,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 21:59:32,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 21:59:32,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3679 transitions. [2023-11-06 21:59:32,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4367283950617284 [2023-11-06 21:59:32,120 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3679 transitions. [2023-11-06 21:59:32,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3679 transitions. [2023-11-06 21:59:32,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:32,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3679 transitions. [2023-11-06 21:59:32,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 306.5833333333333) internal successors, (3679), 12 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:32,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 702.0) internal successors, (9126), 13 states have internal predecessors, (9126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:32,151 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 702.0) internal successors, (9126), 13 states have internal predecessors, (9126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:32,152 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 227 flow. Second operand 12 states and 3679 transitions. [2023-11-06 21:59:32,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 74 transitions, 549 flow [2023-11-06 21:59:32,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 74 transitions, 536 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:32,156 INFO L231 Difference]: Finished difference. Result has 67 places, 74 transitions, 524 flow [2023-11-06 21:59:32,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=524, PETRI_PLACES=67, PETRI_TRANSITIONS=74} [2023-11-06 21:59:32,157 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2023-11-06 21:59:32,157 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 74 transitions, 524 flow [2023-11-06 21:59:32,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 301.15384615384613) internal successors, (3915), 13 states have internal predecessors, (3915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:32,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:32,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:32,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:32,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 21:59:32,365 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:32,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:32,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1688658403, now seen corresponding path program 1 times [2023-11-06 21:59:32,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:32,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491748483] [2023-11-06 21:59:32,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:32,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:32,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:32,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:32,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491748483] [2023-11-06 21:59:32,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491748483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:32,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:32,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:59:32,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386059335] [2023-11-06 21:59:32,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:32,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:32,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:32,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:32,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:32,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 702 [2023-11-06 21:59:32,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 74 transitions, 524 flow. Second operand has 3 states, 3 states have (on average 310.3333333333333) internal successors, (931), 3 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:32,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:32,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 702 [2023-11-06 21:59:32,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:33,234 INFO L124 PetriNetUnfolderBase]: 2490/4169 cut-off events. [2023-11-06 21:59:33,234 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-11-06 21:59:33,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8911 conditions, 4169 events. 2490/4169 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 25861 event pairs, 1140 based on Foata normal form. 0/2057 useless extension candidates. Maximal degree in co-relation 8890. Up to 2386 conditions per place. [2023-11-06 21:59:33,266 INFO L140 encePairwiseOnDemand]: 698/702 looper letters, 94 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2023-11-06 21:59:33,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 97 transitions, 767 flow [2023-11-06 21:59:33,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:33,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:33,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 982 transitions. [2023-11-06 21:59:33,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.466286799620133 [2023-11-06 21:59:33,271 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 982 transitions. [2023-11-06 21:59:33,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 982 transitions. [2023-11-06 21:59:33,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:33,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 982 transitions. [2023-11-06 21:59:33,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:33,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:33,280 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:33,280 INFO L175 Difference]: Start difference. First operand has 67 places, 74 transitions, 524 flow. Second operand 3 states and 982 transitions. [2023-11-06 21:59:33,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 97 transitions, 767 flow [2023-11-06 21:59:33,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 97 transitions, 643 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-11-06 21:59:33,286 INFO L231 Difference]: Finished difference. Result has 65 places, 75 transitions, 417 flow [2023-11-06 21:59:33,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=417, PETRI_PLACES=65, PETRI_TRANSITIONS=75} [2023-11-06 21:59:33,287 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 18 predicate places. [2023-11-06 21:59:33,287 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 75 transitions, 417 flow [2023-11-06 21:59:33,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.3333333333333) internal successors, (931), 3 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:33,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:33,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:33,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:59:33,288 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:33,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:33,289 INFO L85 PathProgramCache]: Analyzing trace with hash -807092189, now seen corresponding path program 1 times [2023-11-06 21:59:33,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:33,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282263606] [2023-11-06 21:59:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:33,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:33,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:33,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282263606] [2023-11-06 21:59:33,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282263606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:33,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:33,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:59:33,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882800447] [2023-11-06 21:59:33,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:33,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:33,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:33,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:33,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:33,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 702 [2023-11-06 21:59:33,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 75 transitions, 417 flow. Second operand has 5 states, 5 states have (on average 294.6) internal successors, (1473), 5 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:33,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:33,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 702 [2023-11-06 21:59:33,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:34,253 INFO L124 PetriNetUnfolderBase]: 1688/2907 cut-off events. [2023-11-06 21:59:34,253 INFO L125 PetriNetUnfolderBase]: For 511/511 co-relation queries the response was YES. [2023-11-06 21:59:34,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 2907 events. 1688/2907 cut-off events. For 511/511 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 17425 event pairs, 1150 based on Foata normal form. 0/1731 useless extension candidates. Maximal degree in co-relation 6553. Up to 2095 conditions per place. [2023-11-06 21:59:34,272 INFO L140 encePairwiseOnDemand]: 692/702 looper letters, 127 selfloop transitions, 4 changer transitions 8/139 dead transitions. [2023-11-06 21:59:34,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 139 transitions, 978 flow [2023-11-06 21:59:34,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:59:34,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:59:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1546 transitions. [2023-11-06 21:59:34,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44045584045584046 [2023-11-06 21:59:34,279 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1546 transitions. [2023-11-06 21:59:34,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1546 transitions. [2023-11-06 21:59:34,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:34,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1546 transitions. [2023-11-06 21:59:34,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.2) internal successors, (1546), 5 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:34,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:34,291 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:34,292 INFO L175 Difference]: Start difference. First operand has 65 places, 75 transitions, 417 flow. Second operand 5 states and 1546 transitions. [2023-11-06 21:59:34,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 139 transitions, 978 flow [2023-11-06 21:59:34,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 139 transitions, 969 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:34,298 INFO L231 Difference]: Finished difference. Result has 70 places, 76 transitions, 441 flow [2023-11-06 21:59:34,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=441, PETRI_PLACES=70, PETRI_TRANSITIONS=76} [2023-11-06 21:59:34,299 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2023-11-06 21:59:34,300 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 76 transitions, 441 flow [2023-11-06 21:59:34,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 294.6) internal successors, (1473), 5 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:34,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:34,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:34,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 21:59:34,301 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:34,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:34,301 INFO L85 PathProgramCache]: Analyzing trace with hash 798891940, now seen corresponding path program 1 times [2023-11-06 21:59:34,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:34,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262258494] [2023-11-06 21:59:34,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:34,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:34,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:34,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262258494] [2023-11-06 21:59:34,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262258494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:34,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:34,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:59:34,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735681784] [2023-11-06 21:59:34,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:34,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:34,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:34,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:34,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:34,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 702 [2023-11-06 21:59:34,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 76 transitions, 441 flow. Second operand has 5 states, 5 states have (on average 294.8) internal successors, (1474), 5 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:34,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:34,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 702 [2023-11-06 21:59:34,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:35,096 INFO L124 PetriNetUnfolderBase]: 1287/2276 cut-off events. [2023-11-06 21:59:35,096 INFO L125 PetriNetUnfolderBase]: For 682/682 co-relation queries the response was YES. [2023-11-06 21:59:35,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5747 conditions, 2276 events. 1287/2276 cut-off events. For 682/682 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 13147 event pairs, 825 based on Foata normal form. 46/1588 useless extension candidates. Maximal degree in co-relation 5723. Up to 1476 conditions per place. [2023-11-06 21:59:35,114 INFO L140 encePairwiseOnDemand]: 692/702 looper letters, 92 selfloop transitions, 15 changer transitions 8/115 dead transitions. [2023-11-06 21:59:35,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 115 transitions, 781 flow [2023-11-06 21:59:35,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:59:35,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:59:35,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1543 transitions. [2023-11-06 21:59:35,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4396011396011396 [2023-11-06 21:59:35,121 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1543 transitions. [2023-11-06 21:59:35,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1543 transitions. [2023-11-06 21:59:35,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:35,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1543 transitions. [2023-11-06 21:59:35,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 308.6) internal successors, (1543), 5 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:35,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:35,134 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:35,135 INFO L175 Difference]: Start difference. First operand has 70 places, 76 transitions, 441 flow. Second operand 5 states and 1543 transitions. [2023-11-06 21:59:35,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 115 transitions, 781 flow [2023-11-06 21:59:35,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 115 transitions, 776 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:35,141 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 497 flow [2023-11-06 21:59:35,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=497, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2023-11-06 21:59:35,142 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 27 predicate places. [2023-11-06 21:59:35,143 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 497 flow [2023-11-06 21:59:35,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 294.8) internal successors, (1474), 5 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:35,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:35,144 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:35,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 21:59:35,144 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:35,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:35,145 INFO L85 PathProgramCache]: Analyzing trace with hash 697011330, now seen corresponding path program 1 times [2023-11-06 21:59:35,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:35,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584367026] [2023-11-06 21:59:35,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:35,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:35,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:35,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584367026] [2023-11-06 21:59:35,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584367026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:35,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:35,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:59:35,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787893867] [2023-11-06 21:59:35,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:35,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:35,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:35,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:35,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:35,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 702 [2023-11-06 21:59:35,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 497 flow. Second operand has 3 states, 3 states have (on average 311.0) internal successors, (933), 3 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:35,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:35,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 702 [2023-11-06 21:59:35,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:35,677 INFO L124 PetriNetUnfolderBase]: 1234/2181 cut-off events. [2023-11-06 21:59:35,677 INFO L125 PetriNetUnfolderBase]: For 1469/1469 co-relation queries the response was YES. [2023-11-06 21:59:35,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6026 conditions, 2181 events. 1234/2181 cut-off events. For 1469/1469 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 13085 event pairs, 13 based on Foata normal form. 0/1499 useless extension candidates. Maximal degree in co-relation 6001. Up to 2055 conditions per place. [2023-11-06 21:59:35,695 INFO L140 encePairwiseOnDemand]: 700/702 looper letters, 89 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2023-11-06 21:59:35,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 753 flow [2023-11-06 21:59:35,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:35,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:35,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 968 transitions. [2023-11-06 21:59:35,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45963912630579296 [2023-11-06 21:59:35,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 968 transitions. [2023-11-06 21:59:35,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 968 transitions. [2023-11-06 21:59:35,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:35,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 968 transitions. [2023-11-06 21:59:35,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:35,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:35,708 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:35,708 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 497 flow. Second operand 3 states and 968 transitions. [2023-11-06 21:59:35,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 753 flow [2023-11-06 21:59:35,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 91 transitions, 728 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:35,716 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 472 flow [2023-11-06 21:59:35,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=472, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2023-11-06 21:59:35,716 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 26 predicate places. [2023-11-06 21:59:35,717 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 472 flow [2023-11-06 21:59:35,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.0) internal successors, (933), 3 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:35,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:35,718 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:35,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 21:59:35,718 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:35,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:35,719 INFO L85 PathProgramCache]: Analyzing trace with hash 697011400, now seen corresponding path program 1 times [2023-11-06 21:59:35,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:35,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399246450] [2023-11-06 21:59:35,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:35,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:35,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:35,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399246450] [2023-11-06 21:59:35,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399246450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:35,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:35,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:59:35,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640474436] [2023-11-06 21:59:35,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:35,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:35,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:35,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:35,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:35,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 702 [2023-11-06 21:59:35,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 472 flow. Second operand has 5 states, 5 states have (on average 294.8) internal successors, (1474), 5 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:35,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:35,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 702 [2023-11-06 21:59:35,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:36,362 INFO L124 PetriNetUnfolderBase]: 872/1535 cut-off events. [2023-11-06 21:59:36,362 INFO L125 PetriNetUnfolderBase]: For 998/998 co-relation queries the response was YES. [2023-11-06 21:59:36,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4395 conditions, 1535 events. 872/1535 cut-off events. For 998/998 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 8000 event pairs, 676 based on Foata normal form. 0/1029 useless extension candidates. Maximal degree in co-relation 4370. Up to 1403 conditions per place. [2023-11-06 21:59:36,372 INFO L140 encePairwiseOnDemand]: 697/702 looper letters, 84 selfloop transitions, 3 changer transitions 29/116 dead transitions. [2023-11-06 21:59:36,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 116 transitions, 927 flow [2023-11-06 21:59:36,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:59:36,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:59:36,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1518 transitions. [2023-11-06 21:59:36,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324786324786325 [2023-11-06 21:59:36,379 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1518 transitions. [2023-11-06 21:59:36,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1518 transitions. [2023-11-06 21:59:36,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:36,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1518 transitions. [2023-11-06 21:59:36,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 303.6) internal successors, (1518), 5 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:36,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:36,393 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:36,393 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 472 flow. Second operand 5 states and 1518 transitions. [2023-11-06 21:59:36,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 116 transitions, 927 flow [2023-11-06 21:59:36,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 116 transitions, 923 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:36,400 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 465 flow [2023-11-06 21:59:36,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=465, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2023-11-06 21:59:36,402 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2023-11-06 21:59:36,402 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 465 flow [2023-11-06 21:59:36,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 294.8) internal successors, (1474), 5 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:36,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:36,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:36,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 21:59:36,404 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:36,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:36,404 INFO L85 PathProgramCache]: Analyzing trace with hash -2123392577, now seen corresponding path program 1 times [2023-11-06 21:59:36,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:36,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156424597] [2023-11-06 21:59:36,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:36,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:36,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:59:36,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:36,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156424597] [2023-11-06 21:59:36,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156424597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:36,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:36,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:59:36,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602471029] [2023-11-06 21:59:36,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:36,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:36,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:36,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:36,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:36,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 702 [2023-11-06 21:59:36,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 465 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:36,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:36,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 702 [2023-11-06 21:59:36,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:36,921 INFO L124 PetriNetUnfolderBase]: 1232/2107 cut-off events. [2023-11-06 21:59:36,921 INFO L125 PetriNetUnfolderBase]: For 992/992 co-relation queries the response was YES. [2023-11-06 21:59:36,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6050 conditions, 2107 events. 1232/2107 cut-off events. For 992/992 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 11722 event pairs, 548 based on Foata normal form. 0/1369 useless extension candidates. Maximal degree in co-relation 6022. Up to 1212 conditions per place. [2023-11-06 21:59:36,938 INFO L140 encePairwiseOnDemand]: 699/702 looper letters, 95 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2023-11-06 21:59:36,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 751 flow [2023-11-06 21:59:36,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:36,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:36,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 978 transitions. [2023-11-06 21:59:36,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46438746438746437 [2023-11-06 21:59:36,943 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 978 transitions. [2023-11-06 21:59:36,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 978 transitions. [2023-11-06 21:59:36,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:36,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 978 transitions. [2023-11-06 21:59:36,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:36,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:36,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:36,953 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 465 flow. Second operand 3 states and 978 transitions. [2023-11-06 21:59:36,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 751 flow [2023-11-06 21:59:36,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 98 transitions, 720 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-11-06 21:59:36,961 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 463 flow [2023-11-06 21:59:36,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=463, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2023-11-06 21:59:36,962 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 28 predicate places. [2023-11-06 21:59:36,963 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 463 flow [2023-11-06 21:59:36,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:36,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:36,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:36,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 21:59:36,964 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:36,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:36,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2123392561, now seen corresponding path program 1 times [2023-11-06 21:59:36,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:36,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286225567] [2023-11-06 21:59:36,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:36,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:37,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:37,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:37,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286225567] [2023-11-06 21:59:37,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286225567] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:37,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427806354] [2023-11-06 21:59:37,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:37,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:37,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:37,468 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:37,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 21:59:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:37,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 21:59:37,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:37,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:37,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:37,655 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 21:59:37,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:37,670 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-06 21:59:37,732 INFO L351 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 15 treesize of output 1 [2023-11-06 21:59:37,782 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 21:59:37,783 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-06 21:59:37,832 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:59:37,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:37,875 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:59:37,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:37,916 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:59:37,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:37,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:38,041 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_324 (Array Int Int)) (v_ArrVal_323 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_323) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_324) c_~a1~0.base) c_~a1~0.offset) 9223372039002259456)) is different from false [2023-11-06 21:59:38,163 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:38,163 INFO L351 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-11-06 21:59:38,177 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:38,178 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 119 [2023-11-06 21:59:38,215 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 54 treesize of output 52 [2023-11-06 21:59:38,224 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 106 treesize of output 98 [2023-11-06 21:59:38,232 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 98 treesize of output 94 [2023-11-06 21:59:38,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-06 21:59:38,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427806354] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:38,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:38,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-11-06 21:59:38,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368729314] [2023-11-06 21:59:38,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:38,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 21:59:38,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:38,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 21:59:38,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=291, Unknown=11, NotChecked=36, Total=420 [2023-11-06 21:59:38,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 702 [2023-11-06 21:59:38,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 463 flow. Second operand has 21 states, 21 states have (on average 255.28571428571428) internal successors, (5361), 21 states have internal predecessors, (5361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:38,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:38,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 702 [2023-11-06 21:59:38,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:39,518 INFO L124 PetriNetUnfolderBase]: 1164/1995 cut-off events. [2023-11-06 21:59:39,519 INFO L125 PetriNetUnfolderBase]: For 1588/1588 co-relation queries the response was YES. [2023-11-06 21:59:39,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5469 conditions, 1995 events. 1164/1995 cut-off events. For 1588/1588 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 11018 event pairs, 362 based on Foata normal form. 0/1335 useless extension candidates. Maximal degree in co-relation 5443. Up to 809 conditions per place. [2023-11-06 21:59:39,533 INFO L140 encePairwiseOnDemand]: 692/702 looper letters, 95 selfloop transitions, 30 changer transitions 15/140 dead transitions. [2023-11-06 21:59:39,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 140 transitions, 1028 flow [2023-11-06 21:59:39,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:59:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 21:59:39,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2109 transitions. [2023-11-06 21:59:39,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37553418803418803 [2023-11-06 21:59:39,542 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2109 transitions. [2023-11-06 21:59:39,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2109 transitions. [2023-11-06 21:59:39,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:39,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2109 transitions. [2023-11-06 21:59:39,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 263.625) internal successors, (2109), 8 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:39,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 702.0) internal successors, (6318), 9 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:39,561 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 702.0) internal successors, (6318), 9 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:39,561 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 463 flow. Second operand 8 states and 2109 transitions. [2023-11-06 21:59:39,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 140 transitions, 1028 flow [2023-11-06 21:59:39,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 140 transitions, 1025 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:39,569 INFO L231 Difference]: Finished difference. Result has 83 places, 79 transitions, 560 flow [2023-11-06 21:59:39,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=560, PETRI_PLACES=83, PETRI_TRANSITIONS=79} [2023-11-06 21:59:39,569 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 36 predicate places. [2023-11-06 21:59:39,570 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 79 transitions, 560 flow [2023-11-06 21:59:39,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 255.28571428571428) internal successors, (5361), 21 states have internal predecessors, (5361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:39,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:39,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:39,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:39,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:39,777 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:39,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:39,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2123392520, now seen corresponding path program 1 times [2023-11-06 21:59:39,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:39,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552665814] [2023-11-06 21:59:39,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:39,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:40,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:40,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552665814] [2023-11-06 21:59:40,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552665814] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:40,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728959805] [2023-11-06 21:59:40,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:40,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:40,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:40,232 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:40,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 21:59:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:40,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-06 21:59:40,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:40,407 INFO L351 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 15 treesize of output 1 [2023-11-06 21:59:40,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:40,456 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 21:59:40,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:40,493 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 21:59:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:40,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:40,666 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:40,666 INFO L351 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-11-06 21:59:40,677 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:40,678 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-11-06 21:59:40,686 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 28 treesize of output 26 [2023-11-06 21:59:40,694 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 54 treesize of output 50 [2023-11-06 21:59:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:40,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728959805] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:40,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:40,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-06 21:59:40,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539628694] [2023-11-06 21:59:40,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:40,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 21:59:40,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:40,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 21:59:40,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=241, Unknown=12, NotChecked=0, Total=306 [2023-11-06 21:59:41,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 702 [2023-11-06 21:59:41,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 79 transitions, 560 flow. Second operand has 18 states, 18 states have (on average 257.5) internal successors, (4635), 18 states have internal predecessors, (4635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:41,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:41,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 702 [2023-11-06 21:59:41,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:42,665 INFO L124 PetriNetUnfolderBase]: 1087/1864 cut-off events. [2023-11-06 21:59:42,665 INFO L125 PetriNetUnfolderBase]: For 2323/2323 co-relation queries the response was YES. [2023-11-06 21:59:42,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5760 conditions, 1864 events. 1087/1864 cut-off events. For 2323/2323 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10162 event pairs, 610 based on Foata normal form. 0/1314 useless extension candidates. Maximal degree in co-relation 5731. Up to 879 conditions per place. [2023-11-06 21:59:42,676 INFO L140 encePairwiseOnDemand]: 693/702 looper letters, 99 selfloop transitions, 27 changer transitions 4/130 dead transitions. [2023-11-06 21:59:42,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 130 transitions, 956 flow [2023-11-06 21:59:42,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:59:42,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 21:59:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2139 transitions. [2023-11-06 21:59:42,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38087606837606836 [2023-11-06 21:59:42,686 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2139 transitions. [2023-11-06 21:59:42,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2139 transitions. [2023-11-06 21:59:42,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:42,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2139 transitions. [2023-11-06 21:59:42,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 267.375) internal successors, (2139), 8 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:42,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 702.0) internal successors, (6318), 9 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:42,704 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 702.0) internal successors, (6318), 9 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:42,704 INFO L175 Difference]: Start difference. First operand has 83 places, 79 transitions, 560 flow. Second operand 8 states and 2139 transitions. [2023-11-06 21:59:42,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 130 transitions, 956 flow [2023-11-06 21:59:42,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 130 transitions, 934 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-06 21:59:42,712 INFO L231 Difference]: Finished difference. Result has 85 places, 78 transitions, 590 flow [2023-11-06 21:59:42,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=590, PETRI_PLACES=85, PETRI_TRANSITIONS=78} [2023-11-06 21:59:42,713 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 38 predicate places. [2023-11-06 21:59:42,713 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 78 transitions, 590 flow [2023-11-06 21:59:42,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 257.5) internal successors, (4635), 18 states have internal predecessors, (4635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:42,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:42,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:42,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:42,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 21:59:42,922 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:42,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:42,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2123392522, now seen corresponding path program 1 times [2023-11-06 21:59:42,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:42,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251940574] [2023-11-06 21:59:42,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:42,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:43,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:43,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251940574] [2023-11-06 21:59:43,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251940574] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:43,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050821623] [2023-11-06 21:59:43,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:43,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:43,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:43,394 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:43,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 21:59:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:43,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 21:59:43,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:43,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:43,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:43,547 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 21:59:43,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:43,561 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-06 21:59:43,618 INFO L351 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 15 treesize of output 1 [2023-11-06 21:59:43,664 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 21:59:43,664 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-06 21:59:43,711 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 21:59:43,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:43,751 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 21:59:43,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:43,787 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 21:59:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:43,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:43,845 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_399 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_399) c_~a1~0.base) c_~a1~0.offset) 4294967296))) is different from false [2023-11-06 21:59:43,904 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_397 (Array Int Int)) (v_ArrVal_399 (Array Int Int)) (v_ArrVal_398 (Array Int Int))) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_397) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_398) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_399) c_~a1~0.base) c_~a1~0.offset) 4294967296))) is different from false [2023-11-06 21:59:43,957 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:43,957 INFO L351 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-11-06 21:59:43,970 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:43,971 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 279 treesize of output 271 [2023-11-06 21:59:43,985 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 61 treesize of output 59 [2023-11-06 21:59:43,993 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 122 treesize of output 114 [2023-11-06 21:59:44,003 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 58 treesize of output 54 [2023-11-06 21:59:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-06 21:59:44,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050821623] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:44,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:44,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-11-06 21:59:44,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588936429] [2023-11-06 21:59:44,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:44,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 21:59:44,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:44,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 21:59:44,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=8, NotChecked=70, Total=420 [2023-11-06 21:59:44,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 702 [2023-11-06 21:59:44,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 78 transitions, 590 flow. Second operand has 21 states, 21 states have (on average 255.28571428571428) internal successors, (5361), 21 states have internal predecessors, (5361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:44,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:44,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 702 [2023-11-06 21:59:44,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:45,012 INFO L124 PetriNetUnfolderBase]: 1019/1752 cut-off events. [2023-11-06 21:59:45,012 INFO L125 PetriNetUnfolderBase]: For 2030/2030 co-relation queries the response was YES. [2023-11-06 21:59:45,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5379 conditions, 1752 events. 1019/1752 cut-off events. For 2030/2030 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9290 event pairs, 362 based on Foata normal form. 0/1312 useless extension candidates. Maximal degree in co-relation 5352. Up to 809 conditions per place. [2023-11-06 21:59:45,027 INFO L140 encePairwiseOnDemand]: 692/702 looper letters, 93 selfloop transitions, 30 changer transitions 0/123 dead transitions. [2023-11-06 21:59:45,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 123 transitions, 1017 flow [2023-11-06 21:59:45,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:59:45,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 21:59:45,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2102 transitions. [2023-11-06 21:59:45,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37428774928774927 [2023-11-06 21:59:45,035 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2102 transitions. [2023-11-06 21:59:45,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2102 transitions. [2023-11-06 21:59:45,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:45,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2102 transitions. [2023-11-06 21:59:45,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 262.75) internal successors, (2102), 8 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:45,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 702.0) internal successors, (6318), 9 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:45,053 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 702.0) internal successors, (6318), 9 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:45,053 INFO L175 Difference]: Start difference. First operand has 85 places, 78 transitions, 590 flow. Second operand 8 states and 2102 transitions. [2023-11-06 21:59:45,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 123 transitions, 1017 flow [2023-11-06 21:59:45,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 123 transitions, 971 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-06 21:59:45,061 INFO L231 Difference]: Finished difference. Result has 87 places, 77 transitions, 600 flow [2023-11-06 21:59:45,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=600, PETRI_PLACES=87, PETRI_TRANSITIONS=77} [2023-11-06 21:59:45,062 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 40 predicate places. [2023-11-06 21:59:45,062 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 77 transitions, 600 flow [2023-11-06 21:59:45,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 255.28571428571428) internal successors, (5361), 21 states have internal predecessors, (5361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:45,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:45,064 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:45,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:45,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:45,270 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:45,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:45,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1057088153, now seen corresponding path program 1 times [2023-11-06 21:59:45,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:45,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057334055] [2023-11-06 21:59:45,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:45,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:59:45,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:45,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057334055] [2023-11-06 21:59:45,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057334055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:45,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:45,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:59:45,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69807491] [2023-11-06 21:59:45,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:45,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:45,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:45,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:45,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:45,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 702 [2023-11-06 21:59:45,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 77 transitions, 600 flow. Second operand has 5 states, 5 states have (on average 295.0) internal successors, (1475), 5 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:45,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:45,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 702 [2023-11-06 21:59:45,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:45,890 INFO L124 PetriNetUnfolderBase]: 838/1429 cut-off events. [2023-11-06 21:59:45,890 INFO L125 PetriNetUnfolderBase]: For 2388/2388 co-relation queries the response was YES. [2023-11-06 21:59:45,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4664 conditions, 1429 events. 838/1429 cut-off events. For 2388/2388 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7033 event pairs, 679 based on Foata normal form. 0/1121 useless extension candidates. Maximal degree in co-relation 4638. Up to 1364 conditions per place. [2023-11-06 21:59:45,905 INFO L140 encePairwiseOnDemand]: 697/702 looper letters, 62 selfloop transitions, 12 changer transitions 16/90 dead transitions. [2023-11-06 21:59:45,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 821 flow [2023-11-06 21:59:45,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:59:45,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:59:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1515 transitions. [2023-11-06 21:59:45,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43162393162393164 [2023-11-06 21:59:45,910 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1515 transitions. [2023-11-06 21:59:45,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1515 transitions. [2023-11-06 21:59:45,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:45,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1515 transitions. [2023-11-06 21:59:45,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 303.0) internal successors, (1515), 5 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:45,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:45,921 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 702.0) internal successors, (4212), 6 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:45,922 INFO L175 Difference]: Start difference. First operand has 87 places, 77 transitions, 600 flow. Second operand 5 states and 1515 transitions. [2023-11-06 21:59:45,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 821 flow [2023-11-06 21:59:45,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 774 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-06 21:59:45,929 INFO L231 Difference]: Finished difference. Result has 86 places, 74 transitions, 550 flow [2023-11-06 21:59:45,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=550, PETRI_PLACES=86, PETRI_TRANSITIONS=74} [2023-11-06 21:59:45,930 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 39 predicate places. [2023-11-06 21:59:45,930 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 74 transitions, 550 flow [2023-11-06 21:59:45,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 295.0) internal successors, (1475), 5 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:45,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:45,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:45,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 21:59:45,931 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:45,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:45,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2123392519, now seen corresponding path program 1 times [2023-11-06 21:59:45,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:45,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952635967] [2023-11-06 21:59:45,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:45,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:46,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:46,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952635967] [2023-11-06 21:59:46,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952635967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:46,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351613994] [2023-11-06 21:59:46,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:46,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:46,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:46,376 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:46,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 21:59:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:46,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 21:59:46,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:46,557 INFO L351 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 15 treesize of output 1 [2023-11-06 21:59:46,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:46,602 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:59:46,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:46,638 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:59:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:46,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:46,879 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_447 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_447))) (or (forall ((~a1~0.base Int) (~a1~0.offset Int)) (not (= (select (select .cse0 ~a1~0.base) ~a1~0.offset) 0))) (< (select (select .cse0 c_~a2~0.base) c_~a2~0.offset) 2147483648)))) (forall ((v_ArrVal_447 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_447))) (let ((.cse2 (select (select .cse1 ~a1~0.base) ~a1~0.offset))) (or (< (select (select .cse1 c_~a2~0.base) c_~a2~0.offset) (+ .cse2 2147483648)) (< .cse2 1) (< 9223372039002259455 .cse2)))))) is different from false [2023-11-06 21:59:46,929 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_447 (Array Int Int)) (v_ArrVal_446 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_446) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_447))) (or (< (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 2147483648) (forall ((~a1~0.base Int) (~a1~0.offset Int)) (not (= (select (select .cse0 ~a1~0.base) ~a1~0.offset) 0)))))) (forall ((v_ArrVal_447 (Array Int Int)) (v_ArrVal_446 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int)) (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_446) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_447))) (let ((.cse1 (select (select .cse2 ~a1~0.base) ~a1~0.offset))) (or (< .cse1 1) (< (select (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (+ .cse1 2147483648)) (< 9223372039002259455 .cse1)))))) is different from false [2023-11-06 21:59:46,954 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:46,955 INFO L351 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 94 [2023-11-06 21:59:47,018 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:47,019 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1039 treesize of output 1010 [2023-11-06 21:59:47,085 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:47,086 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 473 treesize of output 442 [2023-11-06 21:59:47,133 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:47,134 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 433 treesize of output 422 [2023-11-06 21:59:47,173 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:47,174 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 413 treesize of output 414 [2023-11-06 21:59:47,213 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:47,214 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 405 treesize of output 410 [2023-11-06 21:59:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-11-06 21:59:49,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351613994] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:49,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:49,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-11-06 21:59:49,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341949655] [2023-11-06 21:59:49,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:49,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 21:59:49,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:49,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 21:59:49,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=171, Unknown=2, NotChecked=54, Total=272 [2023-11-06 21:59:49,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 702 [2023-11-06 21:59:49,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 74 transitions, 550 flow. Second operand has 17 states, 17 states have (on average 257.47058823529414) internal successors, (4377), 17 states have internal predecessors, (4377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:49,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:49,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 702 [2023-11-06 21:59:49,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:50,644 INFO L124 PetriNetUnfolderBase]: 746/1262 cut-off events. [2023-11-06 21:59:50,644 INFO L125 PetriNetUnfolderBase]: For 1685/1685 co-relation queries the response was YES. [2023-11-06 21:59:50,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4071 conditions, 1262 events. 746/1262 cut-off events. For 1685/1685 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6152 event pairs, 429 based on Foata normal form. 44/1064 useless extension candidates. Maximal degree in co-relation 4046. Up to 879 conditions per place. [2023-11-06 21:59:50,656 INFO L140 encePairwiseOnDemand]: 693/702 looper letters, 80 selfloop transitions, 26 changer transitions 0/106 dead transitions. [2023-11-06 21:59:50,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 106 transitions, 850 flow [2023-11-06 21:59:50,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:50,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:50,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1860 transitions. [2023-11-06 21:59:50,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3785103785103785 [2023-11-06 21:59:50,661 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1860 transitions. [2023-11-06 21:59:50,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1860 transitions. [2023-11-06 21:59:50,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:50,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1860 transitions. [2023-11-06 21:59:50,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 265.7142857142857) internal successors, (1860), 7 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:50,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 702.0) internal successors, (5616), 8 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:50,674 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 702.0) internal successors, (5616), 8 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:50,674 INFO L175 Difference]: Start difference. First operand has 86 places, 74 transitions, 550 flow. Second operand 7 states and 1860 transitions. [2023-11-06 21:59:50,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 106 transitions, 850 flow [2023-11-06 21:59:50,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 106 transitions, 748 flow, removed 13 selfloop flow, removed 8 redundant places. [2023-11-06 21:59:50,689 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 502 flow [2023-11-06 21:59:50,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=502, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2023-11-06 21:59:50,690 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2023-11-06 21:59:50,690 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 502 flow [2023-11-06 21:59:50,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 257.47058823529414) internal successors, (4377), 17 states have internal predecessors, (4377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:50,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:50,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:50,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:50,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:50,899 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:50,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:50,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1400659182, now seen corresponding path program 1 times [2023-11-06 21:59:50,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:50,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228986622] [2023-11-06 21:59:50,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:50,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:51,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:51,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228986622] [2023-11-06 21:59:51,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228986622] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:51,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420505195] [2023-11-06 21:59:51,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:51,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:51,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:51,007 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:51,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 21:59:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 21:59:51,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:51,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:51,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:51,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420505195] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:51,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:51,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2023-11-06 21:59:51,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745414431] [2023-11-06 21:59:51,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:51,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 21:59:51,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:51,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 21:59:51,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:59:52,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 702 [2023-11-06 21:59:52,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 502 flow. Second operand has 16 states, 16 states have (on average 284.75) internal successors, (4556), 16 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:52,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:52,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 702 [2023-11-06 21:59:52,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:53,572 INFO L124 PetriNetUnfolderBase]: 1776/3087 cut-off events. [2023-11-06 21:59:53,572 INFO L125 PetriNetUnfolderBase]: For 2558/2558 co-relation queries the response was YES. [2023-11-06 21:59:53,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8423 conditions, 3087 events. 1776/3087 cut-off events. For 2558/2558 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 18746 event pairs, 786 based on Foata normal form. 660/3065 useless extension candidates. Maximal degree in co-relation 8402. Up to 1235 conditions per place. [2023-11-06 21:59:53,595 INFO L140 encePairwiseOnDemand]: 689/702 looper letters, 197 selfloop transitions, 28 changer transitions 36/261 dead transitions. [2023-11-06 21:59:53,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 261 transitions, 1697 flow [2023-11-06 21:59:53,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 21:59:53,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 21:59:53,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5597 transitions. [2023-11-06 21:59:53,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41962813015444594 [2023-11-06 21:59:53,605 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5597 transitions. [2023-11-06 21:59:53,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5597 transitions. [2023-11-06 21:59:53,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:53,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5597 transitions. [2023-11-06 21:59:53,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 294.57894736842104) internal successors, (5597), 19 states have internal predecessors, (5597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:53,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 702.0) internal successors, (14040), 20 states have internal predecessors, (14040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:53,634 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 702.0) internal successors, (14040), 20 states have internal predecessors, (14040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:53,634 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 502 flow. Second operand 19 states and 5597 transitions. [2023-11-06 21:59:53,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 261 transitions, 1697 flow [2023-11-06 21:59:53,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 261 transitions, 1610 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 21:59:53,644 INFO L231 Difference]: Finished difference. Result has 95 places, 84 transitions, 650 flow [2023-11-06 21:59:53,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=650, PETRI_PLACES=95, PETRI_TRANSITIONS=84} [2023-11-06 21:59:53,645 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 48 predicate places. [2023-11-06 21:59:53,645 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 84 transitions, 650 flow [2023-11-06 21:59:53,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 284.75) internal successors, (4556), 16 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:53,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:53,646 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:53,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:53,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:53,852 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:53,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:53,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1453594468, now seen corresponding path program 1 times [2023-11-06 21:59:53,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:53,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627527567] [2023-11-06 21:59:53,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:53,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:53,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:53,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627527567] [2023-11-06 21:59:53,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627527567] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:53,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123004308] [2023-11-06 21:59:53,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:53,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:53,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:53,962 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:53,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 21:59:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 21:59:54,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:54,168 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:54,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:54,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123004308] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:54,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:54,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2023-11-06 21:59:54,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572721312] [2023-11-06 21:59:54,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:54,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 21:59:54,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:54,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 21:59:54,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:59:55,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 702 [2023-11-06 21:59:55,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 84 transitions, 650 flow. Second operand has 16 states, 16 states have (on average 284.75) internal successors, (4556), 16 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:55,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:55,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 702 [2023-11-06 21:59:55,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:55,959 INFO L124 PetriNetUnfolderBase]: 1344/2367 cut-off events. [2023-11-06 21:59:55,959 INFO L125 PetriNetUnfolderBase]: For 3546/3546 co-relation queries the response was YES. [2023-11-06 21:59:55,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7371 conditions, 2367 events. 1344/2367 cut-off events. For 3546/3546 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 13655 event pairs, 627 based on Foata normal form. 0/1857 useless extension candidates. Maximal degree in co-relation 7346. Up to 1235 conditions per place. [2023-11-06 21:59:55,975 INFO L140 encePairwiseOnDemand]: 693/702 looper letters, 134 selfloop transitions, 25 changer transitions 42/201 dead transitions. [2023-11-06 21:59:55,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 201 transitions, 1505 flow [2023-11-06 21:59:55,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 21:59:55,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 21:59:55,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5531 transitions. [2023-11-06 21:59:55,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146798620482831 [2023-11-06 21:59:55,987 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5531 transitions. [2023-11-06 21:59:55,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5531 transitions. [2023-11-06 21:59:55,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:55,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5531 transitions. [2023-11-06 21:59:56,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 291.10526315789474) internal successors, (5531), 19 states have internal predecessors, (5531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:56,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 702.0) internal successors, (14040), 20 states have internal predecessors, (14040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:56,020 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 702.0) internal successors, (14040), 20 states have internal predecessors, (14040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:56,020 INFO L175 Difference]: Start difference. First operand has 95 places, 84 transitions, 650 flow. Second operand 19 states and 5531 transitions. [2023-11-06 21:59:56,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 201 transitions, 1505 flow [2023-11-06 21:59:56,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 201 transitions, 1470 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-06 21:59:56,034 INFO L231 Difference]: Finished difference. Result has 116 places, 87 transitions, 697 flow [2023-11-06 21:59:56,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=697, PETRI_PLACES=116, PETRI_TRANSITIONS=87} [2023-11-06 21:59:56,035 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 69 predicate places. [2023-11-06 21:59:56,036 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 87 transitions, 697 flow [2023-11-06 21:59:56,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 284.75) internal successors, (4556), 16 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:56,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:56,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:56,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:56,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-06 21:59:56,242 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 21:59:56,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:56,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1453885814, now seen corresponding path program 1 times [2023-11-06 21:59:56,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:56,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466385329] [2023-11-06 21:59:56,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:56,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:56,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:56,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466385329] [2023-11-06 21:59:56,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466385329] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:56,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134644136] [2023-11-06 21:59:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:56,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:56,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:56,665 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:56,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 21:59:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:56,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 21:59:56,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:56,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:56,817 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-06 21:59:56,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:56,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:56,832 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 21:59:56,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:56,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:56,839 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 21:59:56,867 INFO L351 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 15 treesize of output 1 [2023-11-06 21:59:56,907 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 21:59:56,908 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-06 21:59:56,941 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:59:56,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:56,972 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:59:57,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:57,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:57,507 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((~a2~0.offset Int) (v_ArrVal_540 (Array Int Int)) (v_ArrVal_541 (Array Int Int)) (~a2~0.base Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_540) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_541))) (let ((.cse0 (select (select .cse1 ~a2~0.base) ~a2~0.offset))) (or (< 9223372039002259455 .cse0) (< (select (select .cse1 c_~a1~0.base) c_~a1~0.offset) (+ .cse0 2147483648)) (< .cse0 0) (= .cse0 0))))) (forall ((v_ArrVal_540 (Array Int Int)) (v_ArrVal_541 (Array Int Int))) (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_540) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_541))) (or (forall ((~a2~0.offset Int) (~a2~0.base Int)) (not (= (select (select .cse2 ~a2~0.base) ~a2~0.offset) 0))) (< (select (select .cse2 c_~a1~0.base) c_~a1~0.offset) 2147483648))))) is different from false [2023-11-06 21:59:57,662 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:57,663 INFO L351 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 119 [2023-11-06 21:59:57,732 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:57,733 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1102 treesize of output 1069 [2023-11-06 21:59:57,796 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:57,796 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 540 treesize of output 505 [2023-11-06 21:59:57,835 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:57,836 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 496 treesize of output 483 [2023-11-06 21:59:57,879 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:57,880 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 474 treesize of output 475 [2023-11-06 21:59:57,923 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:57,923 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 466 treesize of output 471 [2023-11-06 22:01:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-06 22:01:05,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134644136] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:01:05,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:01:05,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-11-06 22:01:05,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223331395] [2023-11-06 22:01:05,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:01:05,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 22:01:05,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:05,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:01:05,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=305, Unknown=10, NotChecked=36, Total=420 [2023-11-06 22:01:07,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:01:09,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:01:12,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:01:15,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:01:15,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 702 [2023-11-06 22:01:15,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 87 transitions, 697 flow. Second operand has 21 states, 21 states have (on average 254.38095238095238) internal successors, (5342), 21 states have internal predecessors, (5342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:15,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:15,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 702 [2023-11-06 22:01:15,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:17,304 INFO L124 PetriNetUnfolderBase]: 1528/2682 cut-off events. [2023-11-06 22:01:17,305 INFO L125 PetriNetUnfolderBase]: For 4295/4295 co-relation queries the response was YES. [2023-11-06 22:01:17,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8736 conditions, 2682 events. 1528/2682 cut-off events. For 4295/4295 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 15653 event pairs, 983 based on Foata normal form. 0/2074 useless extension candidates. Maximal degree in co-relation 8704. Up to 1916 conditions per place. [2023-11-06 22:01:17,321 INFO L140 encePairwiseOnDemand]: 691/702 looper letters, 125 selfloop transitions, 38 changer transitions 0/163 dead transitions. [2023-11-06 22:01:17,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 163 transitions, 1498 flow [2023-11-06 22:01:17,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:01:17,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:01:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2869 transitions. [2023-11-06 22:01:17,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37153587153587153 [2023-11-06 22:01:17,327 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2869 transitions. [2023-11-06 22:01:17,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2869 transitions. [2023-11-06 22:01:17,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:17,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2869 transitions. [2023-11-06 22:01:17,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 260.8181818181818) internal successors, (2869), 11 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:17,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 702.0) internal successors, (8424), 12 states have internal predecessors, (8424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:17,341 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 702.0) internal successors, (8424), 12 states have internal predecessors, (8424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:17,342 INFO L175 Difference]: Start difference. First operand has 116 places, 87 transitions, 697 flow. Second operand 11 states and 2869 transitions. [2023-11-06 22:01:17,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 163 transitions, 1498 flow [2023-11-06 22:01:17,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 163 transitions, 1452 flow, removed 9 selfloop flow, removed 10 redundant places. [2023-11-06 22:01:17,365 INFO L231 Difference]: Finished difference. Result has 118 places, 100 transitions, 859 flow [2023-11-06 22:01:17,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=859, PETRI_PLACES=118, PETRI_TRANSITIONS=100} [2023-11-06 22:01:17,366 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 71 predicate places. [2023-11-06 22:01:17,366 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 100 transitions, 859 flow [2023-11-06 22:01:17,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 254.38095238095238) internal successors, (5342), 21 states have internal predecessors, (5342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:17,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:17,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:17,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:17,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-06 22:01:17,574 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 22:01:17,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:17,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1453885816, now seen corresponding path program 1 times [2023-11-06 22:01:17,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:17,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513610606] [2023-11-06 22:01:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:17,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:18,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:18,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513610606] [2023-11-06 22:01:18,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513610606] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:18,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212210445] [2023-11-06 22:01:18,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:18,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:18,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:18,072 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:18,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:01:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:18,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:01:18,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:18,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:01:18,228 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-06 22:01:18,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:01:18,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:01:18,252 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:01:18,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:01:18,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:01:18,268 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:01:18,332 INFO L351 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 15 treesize of output 1 [2023-11-06 22:01:18,401 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:01:18,401 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-06 22:01:18,460 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:01:18,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:01:18,511 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:01:18,566 INFO L351 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 17 treesize of output 9 [2023-11-06 22:01:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:18,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:01:18,697 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_576 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_576) c_~a1~0.base) c_~a1~0.offset) 2147483649))) is different from false [2023-11-06 22:01:18,708 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_575 (Array Int Int)) (v_ArrVal_576 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_575) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_576) c_~a1~0.base) c_~a1~0.offset)))) is different from false [2023-11-06 22:01:18,785 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:18,785 INFO L351 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-11-06 22:01:18,803 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:18,803 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-11-06 22:01:18,811 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 56 treesize of output 52 [2023-11-06 22:01:18,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 24 [2023-11-06 22:01:18,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-06 22:01:18,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212210445] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:01:18,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:01:18,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-11-06 22:01:18,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067848171] [2023-11-06 22:01:18,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:01:18,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:01:18,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:18,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:01:18,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=251, Unknown=2, NotChecked=66, Total=380 [2023-11-06 22:01:18,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 702 [2023-11-06 22:01:18,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 100 transitions, 859 flow. Second operand has 20 states, 20 states have (on average 254.4) internal successors, (5088), 20 states have internal predecessors, (5088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:18,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:18,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 702 [2023-11-06 22:01:18,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:20,271 INFO L124 PetriNetUnfolderBase]: 1451/2547 cut-off events. [2023-11-06 22:01:20,271 INFO L125 PetriNetUnfolderBase]: For 4400/4400 co-relation queries the response was YES. [2023-11-06 22:01:20,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8958 conditions, 2547 events. 1451/2547 cut-off events. For 4400/4400 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14480 event pairs, 962 based on Foata normal form. 58/2189 useless extension candidates. Maximal degree in co-relation 8923. Up to 1915 conditions per place. [2023-11-06 22:01:20,287 INFO L140 encePairwiseOnDemand]: 691/702 looper letters, 123 selfloop transitions, 39 changer transitions 0/162 dead transitions. [2023-11-06 22:01:20,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 162 transitions, 1596 flow [2023-11-06 22:01:20,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:01:20,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:01:20,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2867 transitions. [2023-11-06 22:01:20,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37127687127687126 [2023-11-06 22:01:20,292 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2867 transitions. [2023-11-06 22:01:20,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2867 transitions. [2023-11-06 22:01:20,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:20,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2867 transitions. [2023-11-06 22:01:20,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 260.6363636363636) internal successors, (2867), 11 states have internal predecessors, (2867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:20,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 702.0) internal successors, (8424), 12 states have internal predecessors, (8424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:20,307 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 702.0) internal successors, (8424), 12 states have internal predecessors, (8424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:20,307 INFO L175 Difference]: Start difference. First operand has 118 places, 100 transitions, 859 flow. Second operand 11 states and 2867 transitions. [2023-11-06 22:01:20,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 162 transitions, 1596 flow [2023-11-06 22:01:20,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 162 transitions, 1553 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:01:20,331 INFO L231 Difference]: Finished difference. Result has 124 places, 101 transitions, 900 flow [2023-11-06 22:01:20,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=900, PETRI_PLACES=124, PETRI_TRANSITIONS=101} [2023-11-06 22:01:20,332 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 77 predicate places. [2023-11-06 22:01:20,332 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 101 transitions, 900 flow [2023-11-06 22:01:20,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 254.4) internal successors, (5088), 20 states have internal predecessors, (5088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:20,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:20,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:20,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:20,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-06 22:01:20,540 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 22:01:20,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:20,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1453885877, now seen corresponding path program 1 times [2023-11-06 22:01:20,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:20,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374849701] [2023-11-06 22:01:20,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:20,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:20,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:01:20,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:20,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374849701] [2023-11-06 22:01:20,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374849701] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:20,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595459853] [2023-11-06 22:01:20,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:20,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:20,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:20,880 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:20,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 22:01:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:21,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:01:21,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:21,087 INFO L351 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 15 treesize of output 1 [2023-11-06 22:01:21,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:01:21,143 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:01:21,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:01:21,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:01:21,339 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:21,339 INFO L351 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-11-06 22:01:21,353 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:21,354 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-06 22:01:21,376 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2023-11-06 22:01:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:01:21,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595459853] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:01:21,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:01:21,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-06 22:01:21,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899277262] [2023-11-06 22:01:21,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:01:21,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:01:21,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:21,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:01:21,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=145, Unknown=1, NotChecked=0, Total=182 [2023-11-06 22:01:22,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 702 [2023-11-06 22:01:22,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 101 transitions, 900 flow. Second operand has 14 states, 14 states have (on average 287.7857142857143) internal successors, (4029), 14 states have internal predecessors, (4029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:22,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:22,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 702 [2023-11-06 22:01:22,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:24,211 INFO L124 PetriNetUnfolderBase]: 1579/2913 cut-off events. [2023-11-06 22:01:24,211 INFO L125 PetriNetUnfolderBase]: For 5857/5857 co-relation queries the response was YES. [2023-11-06 22:01:24,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10418 conditions, 2913 events. 1579/2913 cut-off events. For 5857/5857 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18236 event pairs, 790 based on Foata normal form. 0/2549 useless extension candidates. Maximal degree in co-relation 10383. Up to 1759 conditions per place. [2023-11-06 22:01:24,227 INFO L140 encePairwiseOnDemand]: 689/702 looper letters, 88 selfloop transitions, 46 changer transitions 0/134 dead transitions. [2023-11-06 22:01:24,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 134 transitions, 1357 flow [2023-11-06 22:01:24,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:01:24,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:01:24,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2643 transitions. [2023-11-06 22:01:24,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41832858499525166 [2023-11-06 22:01:24,232 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2643 transitions. [2023-11-06 22:01:24,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2643 transitions. [2023-11-06 22:01:24,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:24,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2643 transitions. [2023-11-06 22:01:24,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 293.6666666666667) internal successors, (2643), 9 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:24,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 702.0) internal successors, (7020), 10 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:24,242 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 702.0) internal successors, (7020), 10 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:24,243 INFO L175 Difference]: Start difference. First operand has 124 places, 101 transitions, 900 flow. Second operand 9 states and 2643 transitions. [2023-11-06 22:01:24,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 134 transitions, 1357 flow [2023-11-06 22:01:24,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 134 transitions, 1309 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:01:24,268 INFO L231 Difference]: Finished difference. Result has 127 places, 105 transitions, 972 flow [2023-11-06 22:01:24,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=972, PETRI_PLACES=127, PETRI_TRANSITIONS=105} [2023-11-06 22:01:24,269 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 80 predicate places. [2023-11-06 22:01:24,269 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 105 transitions, 972 flow [2023-11-06 22:01:24,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 287.7857142857143) internal successors, (4029), 14 states have internal predecessors, (4029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:24,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:24,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:24,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:24,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-06 22:01:24,476 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 22:01:24,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:24,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1453885824, now seen corresponding path program 1 times [2023-11-06 22:01:24,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:24,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424977057] [2023-11-06 22:01:24,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:24,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:24,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:01:24,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:24,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424977057] [2023-11-06 22:01:24,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424977057] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:24,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350180185] [2023-11-06 22:01:24,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:24,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:24,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:24,795 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:24,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 22:01:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:24,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:01:24,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:24,998 INFO L351 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 15 treesize of output 1 [2023-11-06 22:01:25,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:01:25,037 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:01:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:01:25,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:01:25,155 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_637 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_637) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296))) is different from false [2023-11-06 22:01:25,166 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:25,166 INFO L351 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-11-06 22:01:25,179 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:25,179 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-11-06 22:01:25,189 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 5 [2023-11-06 22:01:25,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-11-06 22:01:25,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350180185] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:01:25,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:01:25,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-06 22:01:25,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530404126] [2023-11-06 22:01:25,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:01:25,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:01:25,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:25,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:01:25,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=125, Unknown=1, NotChecked=22, Total=182 [2023-11-06 22:01:25,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 702 [2023-11-06 22:01:25,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 105 transitions, 972 flow. Second operand has 14 states, 14 states have (on average 259.7857142857143) internal successors, (3637), 14 states have internal predecessors, (3637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:25,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:25,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 702 [2023-11-06 22:01:25,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:26,514 INFO L124 PetriNetUnfolderBase]: 1566/2863 cut-off events. [2023-11-06 22:01:26,514 INFO L125 PetriNetUnfolderBase]: For 6612/6612 co-relation queries the response was YES. [2023-11-06 22:01:26,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10876 conditions, 2863 events. 1566/2863 cut-off events. For 6612/6612 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 17635 event pairs, 778 based on Foata normal form. 4/2633 useless extension candidates. Maximal degree in co-relation 10839. Up to 1713 conditions per place. [2023-11-06 22:01:26,533 INFO L140 encePairwiseOnDemand]: 689/702 looper letters, 87 selfloop transitions, 48 changer transitions 0/135 dead transitions. [2023-11-06 22:01:26,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 135 transitions, 1430 flow [2023-11-06 22:01:26,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:01:26,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:01:26,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2390 transitions. [2023-11-06 22:01:26,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37828426717315605 [2023-11-06 22:01:26,537 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2390 transitions. [2023-11-06 22:01:26,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2390 transitions. [2023-11-06 22:01:26,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:26,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2390 transitions. [2023-11-06 22:01:26,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 265.55555555555554) internal successors, (2390), 9 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:26,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 702.0) internal successors, (7020), 10 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:26,549 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 702.0) internal successors, (7020), 10 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:26,549 INFO L175 Difference]: Start difference. First operand has 127 places, 105 transitions, 972 flow. Second operand 9 states and 2390 transitions. [2023-11-06 22:01:26,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 135 transitions, 1430 flow [2023-11-06 22:01:26,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 135 transitions, 1367 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-06 22:01:26,592 INFO L231 Difference]: Finished difference. Result has 130 places, 107 transitions, 1023 flow [2023-11-06 22:01:26,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1023, PETRI_PLACES=130, PETRI_TRANSITIONS=107} [2023-11-06 22:01:26,593 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 83 predicate places. [2023-11-06 22:01:26,593 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 107 transitions, 1023 flow [2023-11-06 22:01:26,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 259.7857142857143) internal successors, (3637), 14 states have internal predecessors, (3637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:26,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:26,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:26,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:26,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-06 22:01:26,795 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 22:01:26,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:26,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2120704679, now seen corresponding path program 1 times [2023-11-06 22:01:26,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:26,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912670341] [2023-11-06 22:01:26,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:26,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:01:27,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:27,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912670341] [2023-11-06 22:01:27,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912670341] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:27,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823007174] [2023-11-06 22:01:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:27,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:27,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:27,312 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:27,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-06 22:01:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:27,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:01:27,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:27,594 INFO L351 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 15 treesize of output 1 [2023-11-06 22:01:27,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:01:27,681 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:01:27,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:01:27,845 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:01:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:01:27,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:01:28,161 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:28,162 INFO L351 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-11-06 22:01:28,180 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:28,180 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-11-06 22:01:28,188 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 56 treesize of output 52 [2023-11-06 22:01:28,197 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 24 [2023-11-06 22:01:28,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:01:28,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823007174] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:01:28,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:01:28,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-06 22:01:28,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125843288] [2023-11-06 22:01:28,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:01:28,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:01:28,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:28,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:01:28,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=244, Unknown=6, NotChecked=0, Total=306 [2023-11-06 22:01:30,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 702 [2023-11-06 22:01:30,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 107 transitions, 1023 flow. Second operand has 18 states, 18 states have (on average 257.77777777777777) internal successors, (4640), 18 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:30,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:30,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 702 [2023-11-06 22:01:30,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:31,492 INFO L124 PetriNetUnfolderBase]: 1450/2680 cut-off events. [2023-11-06 22:01:31,492 INFO L125 PetriNetUnfolderBase]: For 7247/7247 co-relation queries the response was YES. [2023-11-06 22:01:31,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10621 conditions, 2680 events. 1450/2680 cut-off events. For 7247/7247 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16437 event pairs, 517 based on Foata normal form. 108/2554 useless extension candidates. Maximal degree in co-relation 10585. Up to 1629 conditions per place. [2023-11-06 22:01:31,509 INFO L140 encePairwiseOnDemand]: 690/702 looper letters, 103 selfloop transitions, 44 changer transitions 0/147 dead transitions. [2023-11-06 22:01:31,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 147 transitions, 1600 flow [2023-11-06 22:01:31,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:01:31,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:01:31,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1863 transitions. [2023-11-06 22:01:31,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3791208791208791 [2023-11-06 22:01:31,513 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1863 transitions. [2023-11-06 22:01:31,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1863 transitions. [2023-11-06 22:01:31,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:31,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1863 transitions. [2023-11-06 22:01:31,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 266.14285714285717) internal successors, (1863), 7 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:31,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 702.0) internal successors, (5616), 8 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:31,523 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 702.0) internal successors, (5616), 8 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:31,523 INFO L175 Difference]: Start difference. First operand has 130 places, 107 transitions, 1023 flow. Second operand 7 states and 1863 transitions. [2023-11-06 22:01:31,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 147 transitions, 1600 flow [2023-11-06 22:01:31,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 147 transitions, 1539 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-06 22:01:31,547 INFO L231 Difference]: Finished difference. Result has 133 places, 111 transitions, 1131 flow [2023-11-06 22:01:31,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1131, PETRI_PLACES=133, PETRI_TRANSITIONS=111} [2023-11-06 22:01:31,548 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 86 predicate places. [2023-11-06 22:01:31,548 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 111 transitions, 1131 flow [2023-11-06 22:01:31,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 257.77777777777777) internal successors, (4640), 18 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:31,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:31,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:31,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:31,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-06 22:01:31,755 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-11-06 22:01:31,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:31,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2113381849, now seen corresponding path program 1 times [2023-11-06 22:01:31,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:31,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278462242] [2023-11-06 22:01:31,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:31,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:32,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:32,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:32,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278462242] [2023-11-06 22:01:32,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278462242] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:32,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455017123] [2023-11-06 22:01:32,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:32,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:32,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:32,408 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:32,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6abf1f-4848-4ba9-85fd-ffc5cf11bc1a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-06 22:01:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:32,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:01:32,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:32,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:01:32,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:01:32,589 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 22:01:32,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:01:32,611 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-06 22:01:32,697 INFO L351 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 15 treesize of output 1 [2023-11-06 22:01:32,769 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:01:32,769 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-06 22:01:32,834 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:01:32,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:01:32,890 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:01:33,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:01:33,033 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:01:33,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:33,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:01:33,414 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (* |c_thread1Thread1of1ForFork0_~i~0#1| 4))) (let ((.cse1 (+ .cse3 c_~a1~0.offset))) (and (forall ((v_ArrVal_711 (Array Int Int)) (~a2~0.offset Int) (~a2~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_711))) (let ((.cse2 (select (select .cse0 ~a2~0.base) (+ ~a2~0.offset .cse3)))) (or (< (select (select .cse0 c_~a1~0.base) .cse1) (+ .cse2 2147483648)) (= .cse2 0) (< 9223372039002259455 .cse2) (< .cse2 0))))) (forall ((v_ArrVal_711 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_711))) (or (forall ((~a2~0.offset Int) (~a2~0.base Int)) (not (= (select (select .cse4 ~a2~0.base) (+ ~a2~0.offset .cse3)) 0))) (< (select (select .cse4 c_~a1~0.base) .cse1) 2147483648))))))) is different from false [2023-11-06 22:01:33,481 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_711 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_711))) (or (< (select (select .cse0 c_~a1~0.base) c_~a1~0.offset) 2147483648) (forall ((~a2~0.offset Int) (~a2~0.base Int)) (not (= (select (select .cse0 ~a2~0.base) ~a2~0.offset) 0)))))) (forall ((v_ArrVal_711 (Array Int Int)) (~a2~0.offset Int) (~a2~0.base Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_711))) (let ((.cse1 (select (select .cse2 ~a2~0.base) ~a2~0.offset))) (or (< 9223372039002259455 .cse1) (= .cse1 0) (< (select (select .cse2 c_~a1~0.base) c_~a1~0.offset) (+ .cse1 2147483648)) (< .cse1 0)))))) is different from false [2023-11-06 22:01:33,557 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_711 (Array Int Int)) (v_ArrVal_710 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_710) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_711))) (or (< (select (select .cse0 c_~a1~0.base) c_~a1~0.offset) 2147483648) (forall ((~a2~0.offset Int) (~a2~0.base Int)) (not (= (select (select .cse0 ~a2~0.base) ~a2~0.offset) 0)))))) (forall ((v_ArrVal_711 (Array Int Int)) (v_ArrVal_710 (Array Int Int)) (~a2~0.offset Int) (~a2~0.base Int)) (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_710) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_711))) (let ((.cse1 (select (select .cse2 ~a2~0.base) ~a2~0.offset))) (or (< 9223372039002259455 .cse1) (< (select (select .cse2 c_~a1~0.base) c_~a1~0.offset) (+ .cse1 2147483648)) (< .cse1 0) (= .cse1 0)))))) is different from false [2023-11-06 22:01:34,948 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_711 (Array Int Int)) (v_ArrVal_710 (Array Int Int)) (~a2~0.offset Int) (v_ArrVal_709 (Array Int Int)) (~a2~0.base Int)) (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_709) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_710) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_711))) (let ((.cse0 (select (select .cse1 ~a2~0.base) ~a2~0.offset))) (or (< 9223372039002259455 .cse0) (= .cse0 0) (< (select (select .cse1 c_~a1~0.base) c_~a1~0.offset) (+ .cse0 2147483648)) (< .cse0 0))))) (forall ((v_ArrVal_711 (Array Int Int)) (v_ArrVal_710 (Array Int Int)) (v_ArrVal_709 (Array Int Int))) (let ((.cse2 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_709) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_710) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_711))) (or (forall ((~a2~0.offset Int) (~a2~0.base Int)) (not (= (select (select .cse2 ~a2~0.base) ~a2~0.offset) 0))) (< (select (select .cse2 c_~a1~0.base) c_~a1~0.offset) 2147483648))))) is different from false [2023-11-06 22:01:35,162 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:35,163 INFO L351 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 211 treesize of output 140 [2023-11-06 22:01:35,275 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:35,276 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3808 treesize of output 3699 [2023-11-06 22:01:35,403 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:35,403 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1748 treesize of output 1741 [2023-11-06 22:01:35,476 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:35,477 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1732 treesize of output 1733 [2023-11-06 22:01:35,572 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:35,573 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1724 treesize of output 1729 [2023-11-06 22:01:35,672 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:35,672 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1720 treesize of output 1691 [2023-11-06 22:01:35,771 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:35,772 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1682 treesize of output 1539 [2023-11-06 22:01:35,873 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:35,874 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1530 treesize of output 1463