./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-node-trans.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_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/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_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/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_3b31e13a-d843-421e-ac83-0da2d95644ae/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 b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:30:12,410 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:30:12,475 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:30:12,481 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:30:12,481 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:30:12,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:30:12,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:30:12,508 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:30:12,508 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:30:12,509 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:30:12,510 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:30:12,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:30:12,511 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:30:12,512 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:30:12,512 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:30:12,513 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:30:12,513 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:30:12,514 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:30:12,514 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:30:12,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:30:12,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:30:12,516 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:30:12,516 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:30:12,517 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:30:12,517 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:30:12,517 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:30:12,518 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:30:12,518 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:30:12,519 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:30:12,519 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:30:12,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:30:12,520 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:30:12,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:30:12,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:30:12,521 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:30:12,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:30:12,522 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:30:12,522 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:30:12,522 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:30:12,523 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:30:12,523 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:30:12,523 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_3b31e13a-d843-421e-ac83-0da2d95644ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 [2023-11-06 22:30:12,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:30:12,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:30:12,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:30:12,835 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:30:12,836 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:30:12,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2023-11-06 22:30:15,971 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:30:16,188 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:30:16,188 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2023-11-06 22:30:16,198 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/data/9547e2b25/dea257980e7343428f9b053c2f30d289/FLAG488cf89d4 [2023-11-06 22:30:16,218 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/data/9547e2b25/dea257980e7343428f9b053c2f30d289 [2023-11-06 22:30:16,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:30:16,222 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:30:16,223 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:30:16,224 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:30:16,233 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:30:16,237 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:30:16" (1/1) ... [2023-11-06 22:30:16,238 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@587d474e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:16, skipping insertion in model container [2023-11-06 22:30:16,239 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:30:16" (1/1) ... [2023-11-06 22:30:16,285 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:30:16,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:30:16,571 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:30:16,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:30:16,625 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:30:16,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:16 WrapperNode [2023-11-06 22:30:16,626 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:30:16,627 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:30:16,627 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:30:16,628 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:30:16,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:16" (1/1) ... [2023-11-06 22:30:16,646 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:16" (1/1) ... [2023-11-06 22:30:16,698 INFO L138 Inliner]: procedures = 27, calls = 67, calls flagged for inlining = 23, calls inlined = 35, statements flattened = 504 [2023-11-06 22:30:16,698 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:30:16,699 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:30:16,699 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:30:16,699 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:30:16,709 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:16" (1/1) ... [2023-11-06 22:30:16,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:16" (1/1) ... [2023-11-06 22:30:16,716 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:16" (1/1) ... [2023-11-06 22:30:16,716 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:16" (1/1) ... [2023-11-06 22:30:16,735 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:16" (1/1) ... [2023-11-06 22:30:16,741 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:16" (1/1) ... [2023-11-06 22:30:16,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:16" (1/1) ... [2023-11-06 22:30:16,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:16" (1/1) ... [2023-11-06 22:30:16,755 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:30:16,756 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:30:16,756 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:30:16,757 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:30:16,757 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:16" (1/1) ... [2023-11-06 22:30:16,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:30:16,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:16,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:30:16,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:30:16,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:30:16,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:30:16,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:30:16,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:30:16,828 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:30:16,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:30:16,828 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:30:16,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:30:16,828 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:30:16,829 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:30:16,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:30:16,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:30:16,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:30:16,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:30:16,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:30:16,831 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 22:30:16,970 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:30:16,971 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:30:17,888 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:30:17,904 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:30:17,904 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:30:17,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:30:17 BoogieIcfgContainer [2023-11-06 22:30:17,908 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:30:17,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:30:17,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:30:17,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:30:17,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:30:16" (1/3) ... [2023-11-06 22:30:17,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f69943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:30:17, skipping insertion in model container [2023-11-06 22:30:17,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:16" (2/3) ... [2023-11-06 22:30:17,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f69943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:30:17, skipping insertion in model container [2023-11-06 22:30:17,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:30:17" (3/3) ... [2023-11-06 22:30:17,917 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2023-11-06 22:30:17,932 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:30:17,942 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:30:17,943 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-11-06 22:30:17,943 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:30:18,139 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:30:18,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 643 places, 680 transitions, 1381 flow [2023-11-06 22:30:18,524 INFO L124 PetriNetUnfolderBase]: 47/677 cut-off events. [2023-11-06 22:30:18,524 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:30:18,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 677 events. 47/677 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1093 event pairs, 0 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 571. Up to 2 conditions per place. [2023-11-06 22:30:18,540 INFO L82 GeneralOperation]: Start removeDead. Operand has 643 places, 680 transitions, 1381 flow [2023-11-06 22:30:18,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 617 places, 653 transitions, 1321 flow [2023-11-06 22:30:18,567 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:30:18,584 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 617 places, 653 transitions, 1321 flow [2023-11-06 22:30:18,588 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 617 places, 653 transitions, 1321 flow [2023-11-06 22:30:18,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 617 places, 653 transitions, 1321 flow [2023-11-06 22:30:18,795 INFO L124 PetriNetUnfolderBase]: 46/653 cut-off events. [2023-11-06 22:30:18,795 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:30:18,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 653 events. 46/653 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1093 event pairs, 0 based on Foata normal form. 0/565 useless extension candidates. Maximal degree in co-relation 571. Up to 2 conditions per place. [2023-11-06 22:30:18,829 INFO L119 LiptonReduction]: Number of co-enabled transitions 40128 [2023-11-06 22:30:55,845 INFO L134 LiptonReduction]: Checked pairs total: 48746 [2023-11-06 22:30:55,845 INFO L136 LiptonReduction]: Total number of compositions: 838 [2023-11-06 22:30:55,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:30:55,866 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;@8467fb9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:30:55,867 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-11-06 22:30:55,868 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:30:55,868 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:30:55,869 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:30:55,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:55,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:30:55,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:30:55,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:55,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2657, now seen corresponding path program 1 times [2023-11-06 22:30:55,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:55,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377795182] [2023-11-06 22:30:55,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:55,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:55,991 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 22:30:55,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:55,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377795182] [2023-11-06 22:30:55,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377795182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:55,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:55,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:30:55,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926491750] [2023-11-06 22:30:55,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:56,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:30:56,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:56,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:30:56,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:30:56,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1518 [2023-11-06 22:30:56,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 179 flow. Second operand has 2 states, 2 states have (on average 644.5) internal successors, (1289), 2 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states 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 22:30:56,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:56,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1518 [2023-11-06 22:30:56,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:57,505 INFO L124 PetriNetUnfolderBase]: 4475/6364 cut-off events. [2023-11-06 22:30:57,506 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2023-11-06 22:30:57,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13071 conditions, 6364 events. 4475/6364 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30398 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 12104. Up to 6365 conditions per place. [2023-11-06 22:30:57,561 INFO L140 encePairwiseOnDemand]: 1510/1518 looper letters, 74 selfloop transitions, 0 changer transitions 0/74 dead transitions. [2023-11-06 22:30:57,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 74 transitions, 311 flow [2023-11-06 22:30:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:30:57,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:30:57,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1370 transitions. [2023-11-06 22:30:57,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512516469038208 [2023-11-06 22:30:57,589 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1370 transitions. [2023-11-06 22:30:57,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1370 transitions. [2023-11-06 22:30:57,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:57,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1370 transitions. [2023-11-06 22:30:57,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 685.0) internal successors, (1370), 2 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states 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 22:30:57,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1518.0) internal successors, (4554), 3 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states 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 22:30:57,621 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1518.0) internal successors, (4554), 3 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states 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 22:30:57,623 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 179 flow. Second operand 2 states and 1370 transitions. [2023-11-06 22:30:57,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 74 transitions, 311 flow [2023-11-06 22:30:57,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 302 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:30:57,646 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 154 flow [2023-11-06 22:30:57,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=154, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2023-11-06 22:30:57,652 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-11-06 22:30:57,653 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 154 flow [2023-11-06 22:30:57,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 644.5) internal successors, (1289), 2 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states 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 22:30:57,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:57,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:30:57,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:30:57,655 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:30:57,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:57,656 INFO L85 PathProgramCache]: Analyzing trace with hash 85108, now seen corresponding path program 1 times [2023-11-06 22:30:57,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:57,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737687638] [2023-11-06 22:30:57,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:57,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:57,891 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 22:30:57,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:57,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737687638] [2023-11-06 22:30:57,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737687638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:57,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:57,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:30:57,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599676719] [2023-11-06 22:30:57,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:57,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:57,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:57,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:57,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:30:57,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 629 out of 1518 [2023-11-06 22:30:57,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 629.6666666666666) internal successors, (1889), 3 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states 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 22:30:57,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:57,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 629 of 1518 [2023-11-06 22:30:57,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:59,288 INFO L124 PetriNetUnfolderBase]: 4484/6376 cut-off events. [2023-11-06 22:30:59,288 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:30:59,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13009 conditions, 6376 events. 4484/6376 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30444 event pairs, 3825 based on Foata normal form. 0/3343 useless extension candidates. Maximal degree in co-relation 13006. Up to 6372 conditions per place. [2023-11-06 22:30:59,333 INFO L140 encePairwiseOnDemand]: 1499/1518 looper letters, 73 selfloop transitions, 13 changer transitions 0/86 dead transitions. [2023-11-06 22:30:59,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 350 flow [2023-11-06 22:30:59,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:59,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:30:59,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1979 transitions. [2023-11-06 22:30:59,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43456302151954324 [2023-11-06 22:30:59,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1979 transitions. [2023-11-06 22:30:59,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1979 transitions. [2023-11-06 22:30:59,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:59,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1979 transitions. [2023-11-06 22:30:59,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 659.6666666666666) internal successors, (1979), 3 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states 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 22:30:59,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:30:59,369 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:30:59,370 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 154 flow. Second operand 3 states and 1979 transitions. [2023-11-06 22:30:59,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 350 flow [2023-11-06 22:30:59,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 86 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:30:59,373 INFO L231 Difference]: Finished difference. Result has 74 places, 86 transitions, 266 flow [2023-11-06 22:30:59,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=74, PETRI_TRANSITIONS=86} [2023-11-06 22:30:59,375 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2023-11-06 22:30:59,375 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 86 transitions, 266 flow [2023-11-06 22:30:59,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 629.6666666666666) internal successors, (1889), 3 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states 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 22:30:59,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:59,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:30:59,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:30:59,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:30:59,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:59,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2640864, now seen corresponding path program 1 times [2023-11-06 22:30:59,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:59,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230225329] [2023-11-06 22:30:59,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:59,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:59,501 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 22:30:59,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:59,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230225329] [2023-11-06 22:30:59,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230225329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:59,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:59,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:30:59,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35985554] [2023-11-06 22:30:59,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:59,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:59,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:59,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:59,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:30:59,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 638 out of 1518 [2023-11-06 22:30:59,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 86 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 639.0) internal successors, (1917), 3 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states 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 22:30:59,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:59,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 638 of 1518 [2023-11-06 22:30:59,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:00,795 INFO L124 PetriNetUnfolderBase]: 4483/6373 cut-off events. [2023-11-06 22:31:00,796 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:31:00,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13046 conditions, 6373 events. 4483/6373 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30420 event pairs, 3825 based on Foata normal form. 0/3347 useless extension candidates. Maximal degree in co-relation 13041. Up to 6373 conditions per place. [2023-11-06 22:31:00,835 INFO L140 encePairwiseOnDemand]: 1515/1518 looper letters, 82 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2023-11-06 22:31:00,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 83 transitions, 420 flow [2023-11-06 22:31:00,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:00,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:31:00,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1988 transitions. [2023-11-06 22:31:00,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365393061045235 [2023-11-06 22:31:00,844 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1988 transitions. [2023-11-06 22:31:00,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1988 transitions. [2023-11-06 22:31:00,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:00,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1988 transitions. [2023-11-06 22:31:00,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 662.6666666666666) internal successors, (1988), 3 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states 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 22:31:00,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:00,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:00,870 INFO L175 Difference]: Start difference. First operand has 74 places, 86 transitions, 266 flow. Second operand 3 states and 1988 transitions. [2023-11-06 22:31:00,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 83 transitions, 420 flow [2023-11-06 22:31:00,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 83 transitions, 396 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:31:00,873 INFO L231 Difference]: Finished difference. Result has 72 places, 83 transitions, 232 flow [2023-11-06 22:31:00,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=72, PETRI_TRANSITIONS=83} [2023-11-06 22:31:00,875 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -10 predicate places. [2023-11-06 22:31:00,875 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 83 transitions, 232 flow [2023-11-06 22:31:00,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 639.0) internal successors, (1917), 3 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states 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 22:31:00,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:00,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:31:00,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:31:00,878 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:00,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:00,878 INFO L85 PathProgramCache]: Analyzing trace with hash 2640865, now seen corresponding path program 1 times [2023-11-06 22:31:00,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:00,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828503191] [2023-11-06 22:31:00,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:00,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:00,943 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 22:31:00,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:00,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828503191] [2023-11-06 22:31:00,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828503191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:00,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:00,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:31:00,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118501816] [2023-11-06 22:31:00,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:00,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:00,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:00,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:00,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:00,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 636 out of 1518 [2023-11-06 22:31:00,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 83 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 637.0) internal successors, (1911), 3 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states 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 22:31:00,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:00,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 636 of 1518 [2023-11-06 22:31:00,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:02,390 INFO L124 PetriNetUnfolderBase]: 4482/6370 cut-off events. [2023-11-06 22:31:02,390 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:31:02,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13027 conditions, 6370 events. 4482/6370 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30395 event pairs, 3825 based on Foata normal form. 0/3343 useless extension candidates. Maximal degree in co-relation 13022. Up to 6370 conditions per place. [2023-11-06 22:31:02,421 INFO L140 encePairwiseOnDemand]: 1515/1518 looper letters, 79 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2023-11-06 22:31:02,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 80 transitions, 382 flow [2023-11-06 22:31:02,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:02,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:31:02,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1980 transitions. [2023-11-06 22:31:02,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2023-11-06 22:31:02,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1980 transitions. [2023-11-06 22:31:02,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1980 transitions. [2023-11-06 22:31:02,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:02,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1980 transitions. [2023-11-06 22:31:02,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 660.0) internal successors, (1980), 3 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states 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 22:31:02,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:02,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:02,458 INFO L175 Difference]: Start difference. First operand has 72 places, 83 transitions, 232 flow. Second operand 3 states and 1980 transitions. [2023-11-06 22:31:02,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 80 transitions, 382 flow [2023-11-06 22:31:02,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 80 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:31:02,465 INFO L231 Difference]: Finished difference. Result has 71 places, 80 transitions, 223 flow [2023-11-06 22:31:02,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=71, PETRI_TRANSITIONS=80} [2023-11-06 22:31:02,466 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -11 predicate places. [2023-11-06 22:31:02,466 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 80 transitions, 223 flow [2023-11-06 22:31:02,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 637.0) internal successors, (1911), 3 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states 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 22:31:02,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:02,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:31:02,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:31:02,468 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:02,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:02,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2640903, now seen corresponding path program 1 times [2023-11-06 22:31:02,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:02,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687962010] [2023-11-06 22:31:02,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:02,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:02,557 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 22:31:02,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:02,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687962010] [2023-11-06 22:31:02,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687962010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:02,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:02,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:31:02,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814445720] [2023-11-06 22:31:02,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:02,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:02,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:02,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:02,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:02,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 629 out of 1518 [2023-11-06 22:31:02,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 80 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 630.0) internal successors, (1890), 3 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states 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 22:31:02,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:02,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 629 of 1518 [2023-11-06 22:31:02,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:03,727 INFO L124 PetriNetUnfolderBase]: 4482/6367 cut-off events. [2023-11-06 22:31:03,727 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:31:03,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13019 conditions, 6367 events. 4482/6367 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30394 event pairs, 3825 based on Foata normal form. 0/3343 useless extension candidates. Maximal degree in co-relation 13014. Up to 6354 conditions per place. [2023-11-06 22:31:03,759 INFO L140 encePairwiseOnDemand]: 1509/1518 looper letters, 66 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2023-11-06 22:31:03,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 365 flow [2023-11-06 22:31:03,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:03,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:31:03,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1957 transitions. [2023-11-06 22:31:03,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42973210364514713 [2023-11-06 22:31:03,769 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1957 transitions. [2023-11-06 22:31:03,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1957 transitions. [2023-11-06 22:31:03,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:03,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1957 transitions. [2023-11-06 22:31:03,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 652.3333333333334) internal successors, (1957), 3 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states 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 22:31:03,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:03,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:03,788 INFO L175 Difference]: Start difference. First operand has 71 places, 80 transitions, 223 flow. Second operand 3 states and 1957 transitions. [2023-11-06 22:31:03,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 365 flow [2023-11-06 22:31:03,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 77 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:31:03,791 INFO L231 Difference]: Finished difference. Result has 69 places, 77 transitions, 232 flow [2023-11-06 22:31:03,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=69, PETRI_TRANSITIONS=77} [2023-11-06 22:31:03,795 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-11-06 22:31:03,795 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 77 transitions, 232 flow [2023-11-06 22:31:03,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 630.0) internal successors, (1890), 3 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states 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 22:31:03,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:03,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:31:03,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:31:03,814 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:03,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:03,814 INFO L85 PathProgramCache]: Analyzing trace with hash 2640904, now seen corresponding path program 1 times [2023-11-06 22:31:03,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:03,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331243404] [2023-11-06 22:31:03,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:03,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:03,904 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 22:31:03,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:03,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331243404] [2023-11-06 22:31:03,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331243404] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:03,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453703667] [2023-11-06 22:31:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:03,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:03,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:03,912 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:03,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:31:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:04,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:31:04,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:04,148 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 22:31:04,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:31:04,166 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 22:31:04,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453703667] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:31:04,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:31:04,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:31:04,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664095048] [2023-11-06 22:31:04,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:31:04,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:31:04,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:04,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:31:04,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:31:04,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 629 out of 1518 [2023-11-06 22:31:04,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 77 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 630.1428571428571) internal successors, (4411), 7 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states 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 22:31:04,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:04,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 629 of 1518 [2023-11-06 22:31:04,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:05,375 INFO L124 PetriNetUnfolderBase]: 4503/6397 cut-off events. [2023-11-06 22:31:05,375 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:31:05,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13135 conditions, 6397 events. 4503/6397 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30479 event pairs, 3825 based on Foata normal form. 0/3362 useless extension candidates. Maximal degree in co-relation 13130. Up to 6378 conditions per place. [2023-11-06 22:31:05,410 INFO L140 encePairwiseOnDemand]: 1504/1518 looper letters, 66 selfloop transitions, 41 changer transitions 0/107 dead transitions. [2023-11-06 22:31:05,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 107 transitions, 596 flow [2023-11-06 22:31:05,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:31:05,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:31:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3890 transitions. [2023-11-06 22:31:05,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42709705753184013 [2023-11-06 22:31:05,426 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3890 transitions. [2023-11-06 22:31:05,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3890 transitions. [2023-11-06 22:31:05,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:05,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3890 transitions. [2023-11-06 22:31:05,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 648.3333333333334) internal successors, (3890), 6 states have internal predecessors, (3890), 0 states have call successors, (0), 0 states 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 22:31:05,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1518.0) internal successors, (10626), 7 states have internal predecessors, (10626), 0 states have call successors, (0), 0 states 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 22:31:05,457 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1518.0) internal successors, (10626), 7 states have internal predecessors, (10626), 0 states have call successors, (0), 0 states 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 22:31:05,457 INFO L175 Difference]: Start difference. First operand has 69 places, 77 transitions, 232 flow. Second operand 6 states and 3890 transitions. [2023-11-06 22:31:05,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 107 transitions, 596 flow [2023-11-06 22:31:05,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 107 transitions, 544 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:31:05,461 INFO L231 Difference]: Finished difference. Result has 75 places, 107 transitions, 485 flow [2023-11-06 22:31:05,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=485, PETRI_PLACES=75, PETRI_TRANSITIONS=107} [2023-11-06 22:31:05,462 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -7 predicate places. [2023-11-06 22:31:05,463 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 107 transitions, 485 flow [2023-11-06 22:31:05,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 630.1428571428571) internal successors, (4411), 7 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states 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 22:31:05,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:05,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:31:05,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:31:05,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:05,670 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:05,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:05,670 INFO L85 PathProgramCache]: Analyzing trace with hash 81992857, now seen corresponding path program 1 times [2023-11-06 22:31:05,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:05,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918050433] [2023-11-06 22:31:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:05,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:05,753 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 22:31:05,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:05,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918050433] [2023-11-06 22:31:05,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918050433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:05,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:05,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:31:05,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821757566] [2023-11-06 22:31:05,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:05,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:05,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:05,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:05,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:05,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 638 out of 1518 [2023-11-06 22:31:05,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 107 transitions, 485 flow. Second operand has 3 states, 3 states have (on average 639.3333333333334) internal successors, (1918), 3 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states 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 22:31:05,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:05,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 638 of 1518 [2023-11-06 22:31:05,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:07,166 INFO L124 PetriNetUnfolderBase]: 4499/6391 cut-off events. [2023-11-06 22:31:07,166 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-06 22:31:07,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13175 conditions, 6391 events. 4499/6391 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 30318 event pairs, 3825 based on Foata normal form. 0/3365 useless extension candidates. Maximal degree in co-relation 13167. Up to 6391 conditions per place. [2023-11-06 22:31:07,207 INFO L140 encePairwiseOnDemand]: 1515/1518 looper letters, 100 selfloop transitions, 1 changer transitions 0/101 dead transitions. [2023-11-06 22:31:07,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 101 transitions, 652 flow [2023-11-06 22:31:07,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:07,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:31:07,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1981 transitions. [2023-11-06 22:31:07,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4350021958717611 [2023-11-06 22:31:07,217 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1981 transitions. [2023-11-06 22:31:07,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1981 transitions. [2023-11-06 22:31:07,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:07,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1981 transitions. [2023-11-06 22:31:07,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 660.3333333333334) internal successors, (1981), 3 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states 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 22:31:07,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:07,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:07,237 INFO L175 Difference]: Start difference. First operand has 75 places, 107 transitions, 485 flow. Second operand 3 states and 1981 transitions. [2023-11-06 22:31:07,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 101 transitions, 652 flow [2023-11-06 22:31:07,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 101 transitions, 594 flow, removed 21 selfloop flow, removed 1 redundant places. [2023-11-06 22:31:07,242 INFO L231 Difference]: Finished difference. Result has 74 places, 101 transitions, 394 flow [2023-11-06 22:31:07,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=74, PETRI_TRANSITIONS=101} [2023-11-06 22:31:07,244 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2023-11-06 22:31:07,244 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 101 transitions, 394 flow [2023-11-06 22:31:07,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 639.3333333333334) internal successors, (1918), 3 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states 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 22:31:07,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:07,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:31:07,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:31:07,245 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:07,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:07,246 INFO L85 PathProgramCache]: Analyzing trace with hash 81992858, now seen corresponding path program 1 times [2023-11-06 22:31:07,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:07,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339830429] [2023-11-06 22:31:07,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:07,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:07,300 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 22:31:07,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:07,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339830429] [2023-11-06 22:31:07,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339830429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:07,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:07,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:31:07,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255903682] [2023-11-06 22:31:07,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:07,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:07,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:07,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:07,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:07,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 636 out of 1518 [2023-11-06 22:31:07,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 101 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states 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 22:31:07,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:07,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 636 of 1518 [2023-11-06 22:31:07,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:08,199 INFO L124 PetriNetUnfolderBase]: 4495/6385 cut-off events. [2023-11-06 22:31:08,199 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-06 22:31:08,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13125 conditions, 6385 events. 4495/6385 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 30297 event pairs, 3825 based on Foata normal form. 2/3368 useless extension candidates. Maximal degree in co-relation 13116. Up to 6385 conditions per place. [2023-11-06 22:31:08,233 INFO L140 encePairwiseOnDemand]: 1515/1518 looper letters, 94 selfloop transitions, 1 changer transitions 0/95 dead transitions. [2023-11-06 22:31:08,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 95 transitions, 556 flow [2023-11-06 22:31:08,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:31:08,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1973 transitions. [2023-11-06 22:31:08,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332454984628898 [2023-11-06 22:31:08,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1973 transitions. [2023-11-06 22:31:08,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1973 transitions. [2023-11-06 22:31:08,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:08,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1973 transitions. [2023-11-06 22:31:08,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 657.6666666666666) internal successors, (1973), 3 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states 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 22:31:08,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:08,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:08,261 INFO L175 Difference]: Start difference. First operand has 74 places, 101 transitions, 394 flow. Second operand 3 states and 1973 transitions. [2023-11-06 22:31:08,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 95 transitions, 556 flow [2023-11-06 22:31:08,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 95 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:31:08,265 INFO L231 Difference]: Finished difference. Result has 73 places, 95 transitions, 367 flow [2023-11-06 22:31:08,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=367, PETRI_PLACES=73, PETRI_TRANSITIONS=95} [2023-11-06 22:31:08,266 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-11-06 22:31:08,266 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 95 transitions, 367 flow [2023-11-06 22:31:08,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states 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 22:31:08,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:08,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:31:08,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:31:08,267 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:08,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:08,268 INFO L85 PathProgramCache]: Analyzing trace with hash 81996406, now seen corresponding path program 1 times [2023-11-06 22:31:08,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:08,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494352110] [2023-11-06 22:31:08,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:08,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:08,319 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 22:31:08,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:08,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494352110] [2023-11-06 22:31:08,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494352110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:08,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:08,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:31:08,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645954430] [2023-11-06 22:31:08,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:08,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:08,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:08,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:08,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:08,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 638 out of 1518 [2023-11-06 22:31:08,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 95 transitions, 367 flow. Second operand has 3 states, 3 states have (on average 639.3333333333334) internal successors, (1918), 3 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states 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 22:31:08,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:08,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 638 of 1518 [2023-11-06 22:31:08,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:09,307 INFO L124 PetriNetUnfolderBase]: 4491/6380 cut-off events. [2023-11-06 22:31:09,307 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-06 22:31:09,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13106 conditions, 6380 events. 4491/6380 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 30264 event pairs, 3825 based on Foata normal form. 0/3366 useless extension candidates. Maximal degree in co-relation 13097. Up to 6380 conditions per place. [2023-11-06 22:31:09,344 INFO L140 encePairwiseOnDemand]: 1516/1518 looper letters, 89 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-11-06 22:31:09,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 90 transitions, 521 flow [2023-11-06 22:31:09,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:09,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:31:09,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1977 transitions. [2023-11-06 22:31:09,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43412384716732544 [2023-11-06 22:31:09,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1977 transitions. [2023-11-06 22:31:09,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1977 transitions. [2023-11-06 22:31:09,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:09,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1977 transitions. [2023-11-06 22:31:09,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 659.0) internal successors, (1977), 3 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states 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 22:31:09,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:09,368 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:09,369 INFO L175 Difference]: Start difference. First operand has 73 places, 95 transitions, 367 flow. Second operand 3 states and 1977 transitions. [2023-11-06 22:31:09,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 90 transitions, 521 flow [2023-11-06 22:31:09,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 90 transitions, 520 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:31:09,372 INFO L231 Difference]: Finished difference. Result has 73 places, 90 transitions, 342 flow [2023-11-06 22:31:09,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=73, PETRI_TRANSITIONS=90} [2023-11-06 22:31:09,373 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-11-06 22:31:09,373 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 90 transitions, 342 flow [2023-11-06 22:31:09,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 639.3333333333334) internal successors, (1918), 3 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states 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 22:31:09,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:09,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:31:09,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:31:09,375 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:09,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:09,375 INFO L85 PathProgramCache]: Analyzing trace with hash 81996404, now seen corresponding path program 1 times [2023-11-06 22:31:09,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:09,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940085720] [2023-11-06 22:31:09,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:09,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:09,421 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 22:31:09,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:09,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940085720] [2023-11-06 22:31:09,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940085720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:09,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:09,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:31:09,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233359911] [2023-11-06 22:31:09,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:09,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:09,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:09,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:09,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:09,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 636 out of 1518 [2023-11-06 22:31:09,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 90 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states 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 22:31:09,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:09,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 636 of 1518 [2023-11-06 22:31:09,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:10,238 INFO L124 PetriNetUnfolderBase]: 4487/6375 cut-off events. [2023-11-06 22:31:10,239 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-06 22:31:10,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13087 conditions, 6375 events. 4487/6375 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 30328 event pairs, 3825 based on Foata normal form. 0/3366 useless extension candidates. Maximal degree in co-relation 13078. Up to 6375 conditions per place. [2023-11-06 22:31:10,279 INFO L140 encePairwiseOnDemand]: 1516/1518 looper letters, 84 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2023-11-06 22:31:10,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 85 transitions, 486 flow [2023-11-06 22:31:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:10,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:31:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1970 transitions. [2023-11-06 22:31:10,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432586736934563 [2023-11-06 22:31:10,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1970 transitions. [2023-11-06 22:31:10,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1970 transitions. [2023-11-06 22:31:10,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:10,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1970 transitions. [2023-11-06 22:31:10,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 656.6666666666666) internal successors, (1970), 3 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states 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 22:31:10,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:10,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:10,306 INFO L175 Difference]: Start difference. First operand has 73 places, 90 transitions, 342 flow. Second operand 3 states and 1970 transitions. [2023-11-06 22:31:10,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 85 transitions, 486 flow [2023-11-06 22:31:10,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 85 transitions, 485 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:31:10,310 INFO L231 Difference]: Finished difference. Result has 73 places, 85 transitions, 317 flow [2023-11-06 22:31:10,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=73, PETRI_TRANSITIONS=85} [2023-11-06 22:31:10,313 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-11-06 22:31:10,313 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 85 transitions, 317 flow [2023-11-06 22:31:10,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states 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 22:31:10,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:10,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:31:10,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:31:10,314 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:10,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:10,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1753072329, now seen corresponding path program 1 times [2023-11-06 22:31:10,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:10,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895946411] [2023-11-06 22:31:10,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:10,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:10,384 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 22:31:10,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:10,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895946411] [2023-11-06 22:31:10,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895946411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:10,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:10,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:31:10,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016989777] [2023-11-06 22:31:10,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:10,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:10,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:10,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:10,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:10,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 629 out of 1518 [2023-11-06 22:31:10,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 85 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 630.6666666666666) internal successors, (1892), 3 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states 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 22:31:10,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:10,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 629 of 1518 [2023-11-06 22:31:10,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:11,252 INFO L124 PetriNetUnfolderBase]: 4490/6381 cut-off events. [2023-11-06 22:31:11,252 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-06 22:31:11,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13100 conditions, 6381 events. 4490/6381 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 30351 event pairs, 3825 based on Foata normal form. 0/3369 useless extension candidates. Maximal degree in co-relation 13091. Up to 6373 conditions per place. [2023-11-06 22:31:11,279 INFO L140 encePairwiseOnDemand]: 1505/1518 looper letters, 80 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2023-11-06 22:31:11,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 511 flow [2023-11-06 22:31:11,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:11,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:31:11,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1960 transitions. [2023-11-06 22:31:11,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43039086517347386 [2023-11-06 22:31:11,286 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1960 transitions. [2023-11-06 22:31:11,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1960 transitions. [2023-11-06 22:31:11,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:11,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1960 transitions. [2023-11-06 22:31:11,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 653.3333333333334) internal successors, (1960), 3 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states 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 22:31:11,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:11,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:11,301 INFO L175 Difference]: Start difference. First operand has 73 places, 85 transitions, 317 flow. Second operand 3 states and 1960 transitions. [2023-11-06 22:31:11,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 511 flow [2023-11-06 22:31:11,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 91 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:31:11,305 INFO L231 Difference]: Finished difference. Result has 76 places, 91 transitions, 396 flow [2023-11-06 22:31:11,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=396, PETRI_PLACES=76, PETRI_TRANSITIONS=91} [2023-11-06 22:31:11,306 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -6 predicate places. [2023-11-06 22:31:11,306 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 91 transitions, 396 flow [2023-11-06 22:31:11,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 630.6666666666666) internal successors, (1892), 3 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states 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 22:31:11,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:11,307 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:31:11,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:31:11,307 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:11,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:11,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1368267061, now seen corresponding path program 2 times [2023-11-06 22:31:11,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:11,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240188376] [2023-11-06 22:31:11,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:11,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:11,402 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 22:31:11,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:11,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240188376] [2023-11-06 22:31:11,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240188376] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:11,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918174840] [2023-11-06 22:31:11,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:31:11,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:11,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:11,405 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:11,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:31:11,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:31:11,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:31:11,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:31:11,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:11,589 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 22:31:11,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:11,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918174840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:11,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:31:11,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:31:11,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324855012] [2023-11-06 22:31:11,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:11,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:11,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:11,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:11,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:31:11,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 635 out of 1518 [2023-11-06 22:31:11,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 91 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 636.0) internal successors, (1908), 3 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states 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 22:31:11,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:11,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 635 of 1518 [2023-11-06 22:31:11,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:12,501 INFO L124 PetriNetUnfolderBase]: 4490/6378 cut-off events. [2023-11-06 22:31:12,501 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-06 22:31:12,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13117 conditions, 6378 events. 4490/6378 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30356 event pairs, 3825 based on Foata normal form. 3/3375 useless extension candidates. Maximal degree in co-relation 13107. Up to 6353 conditions per place. [2023-11-06 22:31:12,525 INFO L140 encePairwiseOnDemand]: 1513/1518 looper letters, 82 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2023-11-06 22:31:12,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 88 transitions, 542 flow [2023-11-06 22:31:12,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:12,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:31:12,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1966 transitions. [2023-11-06 22:31:12,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43170838823012736 [2023-11-06 22:31:12,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1966 transitions. [2023-11-06 22:31:12,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1966 transitions. [2023-11-06 22:31:12,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:12,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1966 transitions. [2023-11-06 22:31:12,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 655.3333333333334) internal successors, (1966), 3 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states 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 22:31:12,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:12,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:12,545 INFO L175 Difference]: Start difference. First operand has 76 places, 91 transitions, 396 flow. Second operand 3 states and 1966 transitions. [2023-11-06 22:31:12,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 88 transitions, 542 flow [2023-11-06 22:31:12,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 88 transitions, 472 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-06 22:31:12,549 INFO L231 Difference]: Finished difference. Result has 69 places, 88 transitions, 308 flow [2023-11-06 22:31:12,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=69, PETRI_TRANSITIONS=88} [2023-11-06 22:31:12,550 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-11-06 22:31:12,550 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 88 transitions, 308 flow [2023-11-06 22:31:12,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 636.0) internal successors, (1908), 3 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states 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 22:31:12,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:12,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:31:12,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:12,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:31:12,757 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:12,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:12,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1489339030, now seen corresponding path program 1 times [2023-11-06 22:31:12,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:12,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438791675] [2023-11-06 22:31:12,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:12,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:12,821 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 22:31:12,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:12,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438791675] [2023-11-06 22:31:12,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438791675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:12,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:12,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:31:12,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075399941] [2023-11-06 22:31:12,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:12,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:12,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:12,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:12,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:12,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 629 out of 1518 [2023-11-06 22:31:12,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 88 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 631.0) internal successors, (1893), 3 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states 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 22:31:12,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:12,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 629 of 1518 [2023-11-06 22:31:12,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:13,739 INFO L124 PetriNetUnfolderBase]: 4490/6375 cut-off events. [2023-11-06 22:31:13,739 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-06 22:31:13,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13073 conditions, 6375 events. 4490/6375 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30346 event pairs, 3825 based on Foata normal form. 0/3360 useless extension candidates. Maximal degree in co-relation 13067. Up to 6358 conditions per place. [2023-11-06 22:31:13,764 INFO L140 encePairwiseOnDemand]: 1513/1518 looper letters, 78 selfloop transitions, 7 changer transitions 0/85 dead transitions. [2023-11-06 22:31:13,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 85 transitions, 466 flow [2023-11-06 22:31:13,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:13,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:31:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1945 transitions. [2023-11-06 22:31:13,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42709705753184013 [2023-11-06 22:31:13,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1945 transitions. [2023-11-06 22:31:13,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1945 transitions. [2023-11-06 22:31:13,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:13,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1945 transitions. [2023-11-06 22:31:13,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 648.3333333333334) internal successors, (1945), 3 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states 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 22:31:13,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:13,790 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:13,790 INFO L175 Difference]: Start difference. First operand has 69 places, 88 transitions, 308 flow. Second operand 3 states and 1945 transitions. [2023-11-06 22:31:13,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 85 transitions, 466 flow [2023-11-06 22:31:13,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 85 transitions, 454 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:31:13,794 INFO L231 Difference]: Finished difference. Result has 66 places, 85 transitions, 298 flow [2023-11-06 22:31:13,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=66, PETRI_TRANSITIONS=85} [2023-11-06 22:31:13,795 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -16 predicate places. [2023-11-06 22:31:13,795 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 85 transitions, 298 flow [2023-11-06 22:31:13,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 631.0) internal successors, (1893), 3 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states 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 22:31:13,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:13,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:31:13,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:31:13,796 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:13,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:13,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1489339065, now seen corresponding path program 1 times [2023-11-06 22:31:13,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:13,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443450119] [2023-11-06 22:31:13,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:13,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:13,876 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 22:31:13,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:13,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443450119] [2023-11-06 22:31:13,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443450119] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:13,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617722807] [2023-11-06 22:31:13,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:13,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:13,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:13,886 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:13,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:31:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:14,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:31:14,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:14,069 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 22:31:14,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:14,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617722807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:14,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:31:14,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-06 22:31:14,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343817757] [2023-11-06 22:31:14,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:14,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:14,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:14,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:14,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:31:14,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 626 out of 1518 [2023-11-06 22:31:14,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 85 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 628.0) internal successors, (1884), 3 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states 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 22:31:14,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:14,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 626 of 1518 [2023-11-06 22:31:14,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:15,185 INFO L124 PetriNetUnfolderBase]: 4489/6374 cut-off events. [2023-11-06 22:31:15,185 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-06 22:31:15,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13071 conditions, 6374 events. 4489/6374 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30345 event pairs, 3825 based on Foata normal form. 0/3362 useless extension candidates. Maximal degree in co-relation 13065. Up to 6374 conditions per place. [2023-11-06 22:31:15,231 INFO L140 encePairwiseOnDemand]: 1515/1518 looper letters, 82 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-11-06 22:31:15,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 84 transitions, 462 flow [2023-11-06 22:31:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:15,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:31:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1935 transitions. [2023-11-06 22:31:15,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424901185770751 [2023-11-06 22:31:15,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1935 transitions. [2023-11-06 22:31:15,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1935 transitions. [2023-11-06 22:31:15,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:15,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1935 transitions. [2023-11-06 22:31:15,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 645.0) internal successors, (1935), 3 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states 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 22:31:15,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:15,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:15,256 INFO L175 Difference]: Start difference. First operand has 66 places, 85 transitions, 298 flow. Second operand 3 states and 1935 transitions. [2023-11-06 22:31:15,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 84 transitions, 462 flow [2023-11-06 22:31:15,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:31:15,259 INFO L231 Difference]: Finished difference. Result has 66 places, 84 transitions, 284 flow [2023-11-06 22:31:15,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=66, PETRI_TRANSITIONS=84} [2023-11-06 22:31:15,260 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -16 predicate places. [2023-11-06 22:31:15,260 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 84 transitions, 284 flow [2023-11-06 22:31:15,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 628.0) internal successors, (1884), 3 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states 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 22:31:15,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:15,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:15,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 22:31:15,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:31:15,469 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:15,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:15,470 INFO L85 PathProgramCache]: Analyzing trace with hash -412319540, now seen corresponding path program 1 times [2023-11-06 22:31:15,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:15,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581303613] [2023-11-06 22:31:15,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:15,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:15,557 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 22:31:15,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:15,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581303613] [2023-11-06 22:31:15,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581303613] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:15,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390929982] [2023-11-06 22:31:15,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:15,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:15,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:15,559 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:15,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:31:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:15,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:31:15,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:15,748 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 22:31:15,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:15,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390929982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:15,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:31:15,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-11-06 22:31:15,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526672810] [2023-11-06 22:31:15,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:15,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:15,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:15,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:15,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:31:15,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 1518 [2023-11-06 22:31:15,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 84 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 621.75) internal successors, (2487), 4 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states 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 22:31:15,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:15,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 1518 [2023-11-06 22:31:15,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:16,795 INFO L124 PetriNetUnfolderBase]: 4488/6373 cut-off events. [2023-11-06 22:31:16,795 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:31:16,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13063 conditions, 6373 events. 4488/6373 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30337 event pairs, 3825 based on Foata normal form. 0/3360 useless extension candidates. Maximal degree in co-relation 13057. Up to 6368 conditions per place. [2023-11-06 22:31:16,818 INFO L140 encePairwiseOnDemand]: 1513/1518 looper letters, 76 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2023-11-06 22:31:16,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 83 transitions, 446 flow [2023-11-06 22:31:16,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:31:16,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:31:16,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2538 transitions. [2023-11-06 22:31:16,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798418972332013 [2023-11-06 22:31:16,826 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2538 transitions. [2023-11-06 22:31:16,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2538 transitions. [2023-11-06 22:31:16,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:16,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2538 transitions. [2023-11-06 22:31:16,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 634.5) internal successors, (2538), 4 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states 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 22:31:16,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states 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 22:31:16,838 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states 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 22:31:16,838 INFO L175 Difference]: Start difference. First operand has 66 places, 84 transitions, 284 flow. Second operand 4 states and 2538 transitions. [2023-11-06 22:31:16,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 83 transitions, 446 flow [2023-11-06 22:31:16,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 83 transitions, 442 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:31:16,841 INFO L231 Difference]: Finished difference. Result has 68 places, 83 transitions, 290 flow [2023-11-06 22:31:16,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=68, PETRI_TRANSITIONS=83} [2023-11-06 22:31:16,842 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -14 predicate places. [2023-11-06 22:31:16,842 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 83 transitions, 290 flow [2023-11-06 22:31:16,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 621.75) internal successors, (2487), 4 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states 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 22:31:16,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:16,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:16,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:17,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:31:17,054 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:17,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:17,055 INFO L85 PathProgramCache]: Analyzing trace with hash -3158269, now seen corresponding path program 1 times [2023-11-06 22:31:17,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:17,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720573242] [2023-11-06 22:31:17,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:17,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:17,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:31:17,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:17,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720573242] [2023-11-06 22:31:17,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720573242] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:17,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035395824] [2023-11-06 22:31:17,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:17,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:17,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:17,140 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:17,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:31:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:17,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:31:17,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:17,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:31:17,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:17,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035395824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:17,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:31:17,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-11-06 22:31:17,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336260466] [2023-11-06 22:31:17,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:17,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:17,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:17,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:17,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:31:17,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 1518 [2023-11-06 22:31:17,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 83 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 622.0) internal successors, (2488), 4 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states 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 22:31:17,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:17,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 1518 [2023-11-06 22:31:17,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:18,408 INFO L124 PetriNetUnfolderBase]: 4487/6372 cut-off events. [2023-11-06 22:31:18,408 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:31:18,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13064 conditions, 6372 events. 4487/6372 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30310 event pairs, 3825 based on Foata normal form. 1/3364 useless extension candidates. Maximal degree in co-relation 13058. Up to 6367 conditions per place. [2023-11-06 22:31:18,439 INFO L140 encePairwiseOnDemand]: 1513/1518 looper letters, 75 selfloop transitions, 7 changer transitions 0/82 dead transitions. [2023-11-06 22:31:18,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 82 transitions, 448 flow [2023-11-06 22:31:18,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:31:18,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:31:18,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2538 transitions. [2023-11-06 22:31:18,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798418972332013 [2023-11-06 22:31:18,445 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2538 transitions. [2023-11-06 22:31:18,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2538 transitions. [2023-11-06 22:31:18,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:18,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2538 transitions. [2023-11-06 22:31:18,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 634.5) internal successors, (2538), 4 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states 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 22:31:18,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states 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 22:31:18,458 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states 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 22:31:18,458 INFO L175 Difference]: Start difference. First operand has 68 places, 83 transitions, 290 flow. Second operand 4 states and 2538 transitions. [2023-11-06 22:31:18,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 82 transitions, 448 flow [2023-11-06 22:31:18,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:31:18,461 INFO L231 Difference]: Finished difference. Result has 70 places, 82 transitions, 297 flow [2023-11-06 22:31:18,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=70, PETRI_TRANSITIONS=82} [2023-11-06 22:31:18,462 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-11-06 22:31:18,462 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 82 transitions, 297 flow [2023-11-06 22:31:18,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 622.0) internal successors, (2488), 4 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states 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 22:31:18,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:18,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:18,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:18,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:31:18,668 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:18,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:18,669 INFO L85 PathProgramCache]: Analyzing trace with hash -101162642, now seen corresponding path program 1 times [2023-11-06 22:31:18,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:18,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337191962] [2023-11-06 22:31:18,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:18,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:31:18,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:18,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337191962] [2023-11-06 22:31:18,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337191962] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:18,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18237075] [2023-11-06 22:31:18,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:18,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:18,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:18,760 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:18,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:31:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:18,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:31:18,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:18,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:31:18,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:31:18,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:31:18,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18237075] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:31:18,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:31:18,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:31:18,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507178093] [2023-11-06 22:31:18,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:31:18,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:31:18,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:18,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:31:18,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:31:19,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 629 out of 1518 [2023-11-06 22:31:19,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 82 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 631.0) internal successors, (4417), 7 states have internal predecessors, (4417), 0 states have call successors, (0), 0 states 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 22:31:19,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:19,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 629 of 1518 [2023-11-06 22:31:19,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:19,962 INFO L124 PetriNetUnfolderBase]: 4496/6390 cut-off events. [2023-11-06 22:31:19,962 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:31:19,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13125 conditions, 6390 events. 4496/6390 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30314 event pairs, 3825 based on Foata normal form. 0/3376 useless extension candidates. Maximal degree in co-relation 13119. Up to 6368 conditions per place. [2023-11-06 22:31:19,991 INFO L140 encePairwiseOnDemand]: 1508/1518 looper letters, 72 selfloop transitions, 28 changer transitions 0/100 dead transitions. [2023-11-06 22:31:19,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 100 transitions, 569 flow [2023-11-06 22:31:19,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:31:19,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:31:19,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3862 transitions. [2023-11-06 22:31:20,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42402283706631533 [2023-11-06 22:31:20,001 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3862 transitions. [2023-11-06 22:31:20,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3862 transitions. [2023-11-06 22:31:20,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:20,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3862 transitions. [2023-11-06 22:31:20,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 643.6666666666666) internal successors, (3862), 6 states have internal predecessors, (3862), 0 states have call successors, (0), 0 states 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 22:31:20,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1518.0) internal successors, (10626), 7 states have internal predecessors, (10626), 0 states have call successors, (0), 0 states 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 22:31:20,014 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1518.0) internal successors, (10626), 7 states have internal predecessors, (10626), 0 states have call successors, (0), 0 states 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 22:31:20,014 INFO L175 Difference]: Start difference. First operand has 70 places, 82 transitions, 297 flow. Second operand 6 states and 3862 transitions. [2023-11-06 22:31:20,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 100 transitions, 569 flow [2023-11-06 22:31:20,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 100 transitions, 550 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:31:20,018 INFO L231 Difference]: Finished difference. Result has 75 places, 100 transitions, 459 flow [2023-11-06 22:31:20,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=459, PETRI_PLACES=75, PETRI_TRANSITIONS=100} [2023-11-06 22:31:20,019 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -7 predicate places. [2023-11-06 22:31:20,019 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 100 transitions, 459 flow [2023-11-06 22:31:20,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 631.0) internal successors, (4417), 7 states have internal predecessors, (4417), 0 states have call successors, (0), 0 states 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 22:31:20,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:20,020 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:20,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:20,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:31:20,226 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:20,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:20,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1336067653, now seen corresponding path program 2 times [2023-11-06 22:31:20,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:20,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606685204] [2023-11-06 22:31:20,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:20,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:31:20,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:20,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606685204] [2023-11-06 22:31:20,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606685204] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:20,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420051518] [2023-11-06 22:31:20,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:31:20,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:20,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:20,489 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:20,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:31:20,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:31:20,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:31:20,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:31:20,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:31:20,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:20,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420051518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:20,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:31:20,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-11-06 22:31:20,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273938020] [2023-11-06 22:31:20,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:20,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:20,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:20,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:20,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:31:20,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 635 out of 1518 [2023-11-06 22:31:20,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 100 transitions, 459 flow. Second operand has 3 states, 3 states have (on average 638.0) internal successors, (1914), 3 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states 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 22:31:20,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:20,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 635 of 1518 [2023-11-06 22:31:20,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:21,560 INFO L124 PetriNetUnfolderBase]: 4496/6387 cut-off events. [2023-11-06 22:31:21,560 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-06 22:31:21,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13158 conditions, 6387 events. 4496/6387 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30350 event pairs, 3825 based on Foata normal form. 3/3384 useless extension candidates. Maximal degree in co-relation 13149. Up to 6359 conditions per place. [2023-11-06 22:31:21,584 INFO L140 encePairwiseOnDemand]: 1513/1518 looper letters, 88 selfloop transitions, 9 changer transitions 0/97 dead transitions. [2023-11-06 22:31:21,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 97 transitions, 623 flow [2023-11-06 22:31:21,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:21,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:31:21,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1960 transitions. [2023-11-06 22:31:21,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43039086517347386 [2023-11-06 22:31:21,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1960 transitions. [2023-11-06 22:31:21,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1960 transitions. [2023-11-06 22:31:21,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:21,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1960 transitions. [2023-11-06 22:31:21,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 653.3333333333334) internal successors, (1960), 3 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states 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 22:31:21,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:21,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1518.0) internal successors, (6072), 4 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states 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 22:31:21,595 INFO L175 Difference]: Start difference. First operand has 75 places, 100 transitions, 459 flow. Second operand 3 states and 1960 transitions. [2023-11-06 22:31:21,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 97 transitions, 623 flow [2023-11-06 22:31:21,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 97 transitions, 532 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-06 22:31:21,599 INFO L231 Difference]: Finished difference. Result has 69 places, 97 transitions, 356 flow [2023-11-06 22:31:21,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=69, PETRI_TRANSITIONS=97} [2023-11-06 22:31:21,600 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-11-06 22:31:21,600 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 97 transitions, 356 flow [2023-11-06 22:31:21,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 638.0) internal successors, (1914), 3 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states 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 22:31:21,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:21,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:21,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:21,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:31:21,806 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:21,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:21,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1894287988, now seen corresponding path program 1 times [2023-11-06 22:31:21,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:21,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969763447] [2023-11-06 22:31:21,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:21,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:31:21,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:21,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969763447] [2023-11-06 22:31:21,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969763447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:21,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:21,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:21,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123859524] [2023-11-06 22:31:21,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:21,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:21,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:21,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:21,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:22,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 1518 [2023-11-06 22:31:22,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 97 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states 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 22:31:22,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:22,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 1518 [2023-11-06 22:31:22,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:22,881 INFO L124 PetriNetUnfolderBase]: 4495/6386 cut-off events. [2023-11-06 22:31:22,881 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-06 22:31:22,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13111 conditions, 6386 events. 4495/6386 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30362 event pairs, 3825 based on Foata normal form. 0/3377 useless extension candidates. Maximal degree in co-relation 13105. Up to 6382 conditions per place. [2023-11-06 22:31:22,910 INFO L140 encePairwiseOnDemand]: 1514/1518 looper letters, 90 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2023-11-06 22:31:22,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 96 transitions, 544 flow [2023-11-06 22:31:22,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:31:22,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:31:22,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2534 transitions. [2023-11-06 22:31:22,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173254281949934 [2023-11-06 22:31:22,917 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2534 transitions. [2023-11-06 22:31:22,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2534 transitions. [2023-11-06 22:31:22,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:22,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2534 transitions. [2023-11-06 22:31:22,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 633.5) internal successors, (2534), 4 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states 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 22:31:22,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states 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 22:31:22,925 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states 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 22:31:22,925 INFO L175 Difference]: Start difference. First operand has 69 places, 97 transitions, 356 flow. Second operand 4 states and 2534 transitions. [2023-11-06 22:31:22,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 96 transitions, 544 flow [2023-11-06 22:31:22,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 96 transitions, 526 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:31:22,928 INFO L231 Difference]: Finished difference. Result has 70 places, 96 transitions, 346 flow [2023-11-06 22:31:22,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=346, PETRI_PLACES=70, PETRI_TRANSITIONS=96} [2023-11-06 22:31:22,928 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-11-06 22:31:22,928 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 96 transitions, 346 flow [2023-11-06 22:31:22,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states 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 22:31:22,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:22,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:22,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:31:22,929 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:22,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:22,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2024226525, now seen corresponding path program 1 times [2023-11-06 22:31:22,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:22,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194178881] [2023-11-06 22:31:22,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:22,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:31:23,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:23,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194178881] [2023-11-06 22:31:23,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194178881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:23,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:23,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:23,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988226428] [2023-11-06 22:31:23,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:23,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:23,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:23,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:23,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:23,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 1518 [2023-11-06 22:31:23,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 96 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 624.25) internal successors, (2497), 4 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states 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 22:31:23,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:23,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 1518 [2023-11-06 22:31:23,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:24,042 INFO L124 PetriNetUnfolderBase]: 4494/6385 cut-off events. [2023-11-06 22:31:24,042 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-06 22:31:24,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13105 conditions, 6385 events. 4494/6385 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30330 event pairs, 3825 based on Foata normal form. 0/3372 useless extension candidates. Maximal degree in co-relation 13099. Up to 6381 conditions per place. [2023-11-06 22:31:24,067 INFO L140 encePairwiseOnDemand]: 1514/1518 looper letters, 89 selfloop transitions, 6 changer transitions 0/95 dead transitions. [2023-11-06 22:31:24,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 95 transitions, 532 flow [2023-11-06 22:31:24,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:31:24,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:31:24,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2534 transitions. [2023-11-06 22:31:24,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173254281949934 [2023-11-06 22:31:24,074 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2534 transitions. [2023-11-06 22:31:24,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2534 transitions. [2023-11-06 22:31:24,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:24,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2534 transitions. [2023-11-06 22:31:24,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 633.5) internal successors, (2534), 4 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states 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 22:31:24,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states 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 22:31:24,087 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states 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 22:31:24,087 INFO L175 Difference]: Start difference. First operand has 70 places, 96 transitions, 346 flow. Second operand 4 states and 2534 transitions. [2023-11-06 22:31:24,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 95 transitions, 532 flow [2023-11-06 22:31:24,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 95 transitions, 523 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:31:24,090 INFO L231 Difference]: Finished difference. Result has 71 places, 95 transitions, 345 flow [2023-11-06 22:31:24,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=71, PETRI_TRANSITIONS=95} [2023-11-06 22:31:24,091 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -11 predicate places. [2023-11-06 22:31:24,091 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 95 transitions, 345 flow [2023-11-06 22:31:24,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 624.25) internal successors, (2497), 4 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states 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 22:31:24,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:24,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:24,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:31:24,093 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:24,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:24,093 INFO L85 PathProgramCache]: Analyzing trace with hash -794419052, now seen corresponding path program 1 times [2023-11-06 22:31:24,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:24,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271776082] [2023-11-06 22:31:24,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:24,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:24,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:31:24,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:24,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271776082] [2023-11-06 22:31:24,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271776082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:24,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433054059] [2023-11-06 22:31:24,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:24,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:24,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:24,357 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:24,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:31:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:24,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:31:24,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:24,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:31:24,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:24,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433054059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:24,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:31:24,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-06 22:31:24,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19929067] [2023-11-06 22:31:24,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:24,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:24,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:24,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:24,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:31:24,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 1518 [2023-11-06 22:31:24,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 95 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 624.5) internal successors, (2498), 4 states have internal predecessors, (2498), 0 states have call successors, (0), 0 states 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 22:31:24,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:24,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 1518 [2023-11-06 22:31:24,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:25,766 INFO L124 PetriNetUnfolderBase]: 4493/6384 cut-off events. [2023-11-06 22:31:25,766 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-06 22:31:25,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13105 conditions, 6384 events. 4493/6384 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30319 event pairs, 3825 based on Foata normal form. 0/3376 useless extension candidates. Maximal degree in co-relation 13099. Up to 6380 conditions per place. [2023-11-06 22:31:25,786 INFO L140 encePairwiseOnDemand]: 1514/1518 looper letters, 88 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2023-11-06 22:31:25,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 94 transitions, 529 flow [2023-11-06 22:31:25,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:31:25,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:31:25,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2534 transitions. [2023-11-06 22:31:25,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173254281949934 [2023-11-06 22:31:25,794 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2534 transitions. [2023-11-06 22:31:25,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2534 transitions. [2023-11-06 22:31:25,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:25,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2534 transitions. [2023-11-06 22:31:25,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 633.5) internal successors, (2534), 4 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states 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 22:31:25,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states 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 22:31:25,805 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1518.0) internal successors, (7590), 5 states have internal predecessors, (7590), 0 states have call successors, (0), 0 states 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 22:31:25,806 INFO L175 Difference]: Start difference. First operand has 71 places, 95 transitions, 345 flow. Second operand 4 states and 2534 transitions. [2023-11-06 22:31:25,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 94 transitions, 529 flow [2023-11-06 22:31:25,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 94 transitions, 520 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:31:25,809 INFO L231 Difference]: Finished difference. Result has 72 places, 94 transitions, 344 flow [2023-11-06 22:31:25,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=72, PETRI_TRANSITIONS=94} [2023-11-06 22:31:25,810 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -10 predicate places. [2023-11-06 22:31:25,810 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 94 transitions, 344 flow [2023-11-06 22:31:25,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 624.5) internal successors, (2498), 4 states have internal predecessors, (2498), 0 states have call successors, (0), 0 states 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 22:31:25,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:25,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:25,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:26,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:26,017 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:26,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:26,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2099475665, now seen corresponding path program 1 times [2023-11-06 22:31:26,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:26,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686346454] [2023-11-06 22:31:26,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:26,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:31:27,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:27,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686346454] [2023-11-06 22:31:27,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686346454] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:27,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924077403] [2023-11-06 22:31:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:27,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:27,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:27,350 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:27,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:31:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:27,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-06 22:31:27,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:27,690 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-06 22:31:27,746 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 22:31:27,850 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-06 22:31:27,851 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-06 22:31:27,926 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 22:31:28,071 INFO L322 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-11-06 22:31:28,071 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-11-06 22:31:28,186 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:31:28,255 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-06 22:31:28,256 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-06 22:31:28,337 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 22:31:28,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:28,394 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 22:31:28,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:28,461 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 22:31:28,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:28,516 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 22:31:28,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:31:28,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:31:28,625 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_625 (Array Int Int)) (v_ArrVal_624 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_624) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_625) c_~get_8~0.base) (+ (* c_~id_6~0 4) c_~get_8~0.offset)) 4294967296))) is different from false [2023-11-06 22:31:29,288 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:31:29,289 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 40 treesize of output 41 [2023-11-06 22:31:29,352 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:31:29,354 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 690179 treesize of output 681987 [2023-11-06 22:31:29,502 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 325 treesize of output 319 [2023-11-06 22:31:29,530 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 319 treesize of output 295 [2023-11-06 22:31:29,563 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 295 treesize of output 283 [2023-11-06 22:31:29,594 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 283 treesize of output 235 [2023-11-06 22:31:29,626 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 330 treesize of output 234 [2023-11-06 22:31:30,366 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:31:30,367 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 104 treesize of output 313 [2023-11-06 22:31:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:31:33,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924077403] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:31:33,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:31:33,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 30 [2023-11-06 22:31:33,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246393399] [2023-11-06 22:31:33,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:31:33,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-06 22:31:33,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:33,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-06 22:31:33,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=725, Unknown=17, NotChecked=58, Total=992 [2023-11-06 22:31:34,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 524 out of 1518 [2023-11-06 22:31:34,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 94 transitions, 344 flow. Second operand has 32 states, 32 states have (on average 525.59375) internal successors, (16819), 32 states have internal predecessors, (16819), 0 states have call successors, (0), 0 states 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 22:31:35,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:35,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 524 of 1518 [2023-11-06 22:31:35,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:38,361 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 22:31:40,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:31:42,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:31:45,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:31:48,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:31:54,323 INFO L124 PetriNetUnfolderBase]: 10215/14425 cut-off events. [2023-11-06 22:31:54,323 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-06 22:31:54,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29722 conditions, 14425 events. 10215/14425 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 78908 event pairs, 5276 based on Foata normal form. 0/7803 useless extension candidates. Maximal degree in co-relation 29716. Up to 6092 conditions per place. [2023-11-06 22:31:54,415 INFO L140 encePairwiseOnDemand]: 1499/1518 looper letters, 220 selfloop transitions, 39 changer transitions 0/259 dead transitions. [2023-11-06 22:31:54,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 259 transitions, 1336 flow [2023-11-06 22:31:54,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:31:54,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:31:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 8046 transitions. [2023-11-06 22:31:54,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3533596837944664 [2023-11-06 22:31:54,444 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 8046 transitions. [2023-11-06 22:31:54,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 8046 transitions. [2023-11-06 22:31:54,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:54,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 8046 transitions. [2023-11-06 22:31:54,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 536.4) internal successors, (8046), 15 states have internal predecessors, (8046), 0 states have call successors, (0), 0 states 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 22:31:54,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1518.0) internal successors, (24288), 16 states have internal predecessors, (24288), 0 states have call successors, (0), 0 states 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 22:31:54,484 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1518.0) internal successors, (24288), 16 states have internal predecessors, (24288), 0 states have call successors, (0), 0 states 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 22:31:54,484 INFO L175 Difference]: Start difference. First operand has 72 places, 94 transitions, 344 flow. Second operand 15 states and 8046 transitions. [2023-11-06 22:31:54,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 259 transitions, 1336 flow [2023-11-06 22:31:54,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 259 transitions, 1276 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-06 22:31:54,491 INFO L231 Difference]: Finished difference. Result has 89 places, 122 transitions, 574 flow [2023-11-06 22:31:54,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=574, PETRI_PLACES=89, PETRI_TRANSITIONS=122} [2023-11-06 22:31:54,492 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 7 predicate places. [2023-11-06 22:31:54,492 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 122 transitions, 574 flow [2023-11-06 22:31:54,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 525.59375) internal successors, (16819), 32 states have internal predecessors, (16819), 0 states have call successors, (0), 0 states 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 22:31:54,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:54,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:54,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:54,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:54,708 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:31:54,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:54,708 INFO L85 PathProgramCache]: Analyzing trace with hash 2099475664, now seen corresponding path program 1 times [2023-11-06 22:31:54,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:54,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478430308] [2023-11-06 22:31:54,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:54,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:57,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:57,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478430308] [2023-11-06 22:31:57,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478430308] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:57,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747111644] [2023-11-06 22:31:57,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:57,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:57,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:57,121 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:57,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:31:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:57,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-06 22:31:57,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:57,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:57,452 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 22:31:57,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:57,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:57,495 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 22:31:57,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:57,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:57,558 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 22:31:57,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:57,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:57,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:57,620 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-06 22:31:57,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:57,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:57,657 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 22:31:57,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:57,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:57,689 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 22:31:57,849 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 22:31:58,124 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:31:58,125 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-06 22:31:58,298 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 22:31:58,538 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-06 22:31:58,539 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-06 22:31:58,702 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 22:31:58,935 INFO L322 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-11-06 22:31:58,935 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-11-06 22:31:59,219 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 22:31:59,355 INFO L322 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-11-06 22:31:59,355 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-11-06 22:31:59,472 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:31:59,568 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-06 22:31:59,569 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-06 22:31:59,713 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 22:31:59,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:59,846 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 22:31:59,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:59,995 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 22:32:00,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:32:00,143 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 18 treesize of output 13 [2023-11-06 22:32:00,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:32:00,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:32:03,416 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:32:03,416 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 43 treesize of output 44 [2023-11-06 22:32:03,670 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:32:03,679 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 11026435 treesize of output 10960899 [2023-11-06 22:32:04,492 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 661 treesize of output 637 [2023-11-06 22:32:04,544 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 637 treesize of output 625 [2023-11-06 22:32:04,591 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 625 treesize of output 619 [2023-11-06 22:32:04,639 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 1286 treesize of output 1190 [2023-11-06 22:32:04,688 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 1190 treesize of output 998 [2023-11-06 22:32:04,744 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 522 treesize of output 474 [2023-11-06 22:32:06,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:32:06,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747111644] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:32:06,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:32:06,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 13] total 36 [2023-11-06 22:32:06,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464052039] [2023-11-06 22:32:06,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:32:06,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-06 22:32:06,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:06,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-06 22:32:06,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1080, Unknown=28, NotChecked=0, Total=1406 [2023-11-06 22:32:21,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 525 out of 1518 [2023-11-06 22:32:21,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 122 transitions, 574 flow. Second operand has 38 states, 38 states have (on average 526.5) internal successors, (20007), 38 states have internal predecessors, (20007), 0 states have call successors, (0), 0 states 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 22:32:21,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:32:21,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 525 of 1518 [2023-11-06 22:32:21,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:32:27,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:32:32,320 WARN L539 Checker$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 22:32:35,198 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 22:32:35,465 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (forall ((v_ArrVal_711 (Array Int Int)) (v_ArrVal_710 (Array Int Int)) (v_ArrVal_713 (Array Int Int)) (v_ArrVal_712 (Array Int Int)) (v_ArrVal_714 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_193| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_193|) 0)) (< 0 (+ 2147483649 (select (select (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_710) |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_193| v_ArrVal_711) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_712) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_713) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_714) c_~get_2~0.base) .cse0))))) (forall ((v_ArrVal_714 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_714) c_~get_2~0.base) .cse0)))) (forall ((|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_193| Int)) (or (forall ((v_ArrVal_711 (Array Int Int)) (v_ArrVal_713 (Array Int Int)) (v_ArrVal_712 (Array Int Int)) (v_ArrVal_714 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store (store (store |c_#memory_int| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_193| v_ArrVal_711) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_712) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_713) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_714) c_~get_2~0.base) .cse0)))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_193|) 0)))) (forall ((v_ArrVal_711 (Array Int Int)) (v_ArrVal_713 (Array Int Int)) (v_ArrVal_712 (Array Int Int)) (v_ArrVal_714 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_711) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_712) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_713) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_714) c_~get_2~0.base) .cse0)))))) is different from false [2023-11-06 22:32:38,659 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 22:32:40,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:32:48,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:32:50,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:32:52,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:33:00,015 INFO L124 PetriNetUnfolderBase]: 26702/37768 cut-off events. [2023-11-06 22:33:00,015 INFO L125 PetriNetUnfolderBase]: For 10089/10089 co-relation queries the response was YES. [2023-11-06 22:33:00,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95910 conditions, 37768 events. 26702/37768 cut-off events. For 10089/10089 co-relation queries the response was YES. Maximal size of possible extension queue 1402. Compared 233372 event pairs, 14554 based on Foata normal form. 0/24265 useless extension candidates. Maximal degree in co-relation 95898. Up to 12372 conditions per place. [2023-11-06 22:33:00,222 INFO L140 encePairwiseOnDemand]: 1501/1518 looper letters, 294 selfloop transitions, 53 changer transitions 0/347 dead transitions. [2023-11-06 22:33:00,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 347 transitions, 2201 flow [2023-11-06 22:33:00,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:33:00,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-06 22:33:00,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 10699 transitions. [2023-11-06 22:33:00,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3524044795783926 [2023-11-06 22:33:00,239 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 10699 transitions. [2023-11-06 22:33:00,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 10699 transitions. [2023-11-06 22:33:00,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:00,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 10699 transitions. [2023-11-06 22:33:00,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 534.95) internal successors, (10699), 20 states have internal predecessors, (10699), 0 states have call successors, (0), 0 states 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 22:33:00,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 1518.0) internal successors, (31878), 21 states have internal predecessors, (31878), 0 states have call successors, (0), 0 states 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 22:33:00,286 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 1518.0) internal successors, (31878), 21 states have internal predecessors, (31878), 0 states have call successors, (0), 0 states 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 22:33:00,286 INFO L175 Difference]: Start difference. First operand has 89 places, 122 transitions, 574 flow. Second operand 20 states and 10699 transitions. [2023-11-06 22:33:00,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 347 transitions, 2201 flow [2023-11-06 22:33:00,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 347 transitions, 2174 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-06 22:33:00,319 INFO L231 Difference]: Finished difference. Result has 121 places, 169 transitions, 1115 flow [2023-11-06 22:33:00,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1115, PETRI_PLACES=121, PETRI_TRANSITIONS=169} [2023-11-06 22:33:00,320 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 39 predicate places. [2023-11-06 22:33:00,320 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 169 transitions, 1115 flow [2023-11-06 22:33:00,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 526.5) internal successors, (20007), 38 states have internal predecessors, (20007), 0 states have call successors, (0), 0 states 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 22:33:00,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:00,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:00,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:00,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:00,530 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:33:00,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:00,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1935560697, now seen corresponding path program 1 times [2023-11-06 22:33:00,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:00,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431981785] [2023-11-06 22:33:00,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:00,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:02,102 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:02,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:02,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431981785] [2023-11-06 22:33:02,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431981785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:02,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118417777] [2023-11-06 22:33:02,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:02,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:02,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:02,105 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:02,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:33:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:02,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-06 22:33:02,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:02,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,400 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 22:33:02,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,424 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 22:33:02,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,445 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 22:33:02,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,474 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 22:33:02,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,517 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 22:33:02,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,547 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 22:33:02,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,569 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 22:33:02,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,590 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 22:33:02,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,624 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 22:33:02,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,656 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 22:33:02,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,677 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 22:33:02,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:02,698 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 22:33:02,816 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 22:33:03,027 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:33:03,028 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-06 22:33:03,150 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 22:33:03,305 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-06 22:33:03,305 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-06 22:33:03,461 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 22:33:03,698 INFO L322 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-11-06 22:33:03,698 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-11-06 22:33:03,888 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:04,025 INFO L322 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-11-06 22:33:04,025 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-11-06 22:33:04,090 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:33:04,179 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-06 22:33:04,179 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-06 22:33:04,310 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 22:33:04,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:04,422 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 22:33:04,585 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 22:33:04,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:04,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:06,576 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:33:06,577 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 37 treesize of output 38 [2023-11-06 22:33:06,605 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:33:06,605 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 679 treesize of output 663 [2023-11-06 22:33:06,629 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 320 treesize of output 308 [2023-11-06 22:33:06,643 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 308 treesize of output 284 [2023-11-06 22:33:06,661 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 144 treesize of output 138 [2023-11-06 22:33:06,678 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 278 treesize of output 230 [2023-11-06 22:33:07,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:07,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118417777] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:33:07,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:33:07,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 13] total 31 [2023-11-06 22:33:07,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963032223] [2023-11-06 22:33:07,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:07,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-06 22:33:07,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:07,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-06 22:33:07,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=834, Unknown=20, NotChecked=0, Total=1056 [2023-11-06 22:33:13,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:33:17,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:33:19,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 525 out of 1518 [2023-11-06 22:33:20,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 169 transitions, 1115 flow. Second operand has 33 states, 33 states have (on average 526.6666666666666) internal successors, (17380), 33 states have internal predecessors, (17380), 0 states have call successors, (0), 0 states 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 22:33:20,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:20,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 525 of 1518 [2023-11-06 22:33:20,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:23,340 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 22:33:24,165 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (forall ((v_ArrVal_793 (Array Int Int)) (v_ArrVal_794 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_793) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_794) c_~get_2~0.base) .cse0)))) (forall ((|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_196| Int) (v_ArrVal_793 (Array Int Int)) (v_ArrVal_792 (Array Int Int)) (v_ArrVal_794 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_196|) 0)) (< 0 (+ 2147483649 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_792) |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_196| v_ArrVal_793) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_794) c_~get_2~0.base) .cse0))))) (forall ((v_ArrVal_794 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_794) c_~get_2~0.base) .cse0) 2147483649))))) is different from false [2023-11-06 22:33:25,201 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (forall ((|v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_196| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_196|) 0)) (forall ((v_ArrVal_793 (Array Int Int)) (v_ArrVal_794 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |v_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base_196| v_ArrVal_793) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_794) c_~get_2~0.base) .cse0) 2147483649))))) (forall ((v_ArrVal_794 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_794) c_~get_2~0.base) .cse0) 2147483649))))) is different from false [2023-11-06 22:33:36,948 INFO L124 PetriNetUnfolderBase]: 30930/43613 cut-off events. [2023-11-06 22:33:36,948 INFO L125 PetriNetUnfolderBase]: For 33045/33045 co-relation queries the response was YES. [2023-11-06 22:33:37,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116931 conditions, 43613 events. 30930/43613 cut-off events. For 33045/33045 co-relation queries the response was YES. Maximal size of possible extension queue 1654. Compared 272899 event pairs, 15402 based on Foata normal form. 0/30771 useless extension candidates. Maximal degree in co-relation 116905. Up to 30465 conditions per place. [2023-11-06 22:33:37,348 INFO L140 encePairwiseOnDemand]: 1498/1518 looper letters, 284 selfloop transitions, 84 changer transitions 0/368 dead transitions. [2023-11-06 22:33:37,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 368 transitions, 2771 flow [2023-11-06 22:33:37,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:33:37,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-06 22:33:37,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 11742 transitions. [2023-11-06 22:33:37,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351598993891484 [2023-11-06 22:33:37,360 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 11742 transitions. [2023-11-06 22:33:37,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 11742 transitions. [2023-11-06 22:33:37,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:37,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 11742 transitions. [2023-11-06 22:33:37,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 533.7272727272727) internal successors, (11742), 22 states have internal predecessors, (11742), 0 states have call successors, (0), 0 states 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 22:33:37,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 1518.0) internal successors, (34914), 23 states have internal predecessors, (34914), 0 states have call successors, (0), 0 states 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 22:33:37,412 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 1518.0) internal successors, (34914), 23 states have internal predecessors, (34914), 0 states have call successors, (0), 0 states 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 22:33:37,412 INFO L175 Difference]: Start difference. First operand has 121 places, 169 transitions, 1115 flow. Second operand 22 states and 11742 transitions. [2023-11-06 22:33:37,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 368 transitions, 2771 flow [2023-11-06 22:33:37,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 368 transitions, 2759 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-06 22:33:37,530 INFO L231 Difference]: Finished difference. Result has 155 places, 220 transitions, 1812 flow [2023-11-06 22:33:37,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1518, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1812, PETRI_PLACES=155, PETRI_TRANSITIONS=220} [2023-11-06 22:33:37,531 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 73 predicate places. [2023-11-06 22:33:37,531 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 220 transitions, 1812 flow [2023-11-06 22:33:37,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 526.6666666666666) internal successors, (17380), 33 states have internal predecessors, (17380), 0 states have call successors, (0), 0 states 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 22:33:37,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:37,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:37,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-06 22:33:37,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:37,733 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-06 22:33:37,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:37,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1935560698, now seen corresponding path program 1 times [2023-11-06 22:33:37,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:37,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311793642] [2023-11-06 22:33:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:37,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:33:39,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:39,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311793642] [2023-11-06 22:33:39,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311793642] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:39,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753518080] [2023-11-06 22:33:39,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:39,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:39,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:39,418 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:39,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b31e13a-d843-421e-ac83-0da2d95644ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:33:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:39,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-06 22:33:39,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:39,726 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-06 22:33:39,771 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 22:33:39,979 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:33:39,980 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-06 22:33:40,072 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 22:33:40,230 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:33:40,230 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-06 22:33:40,326 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 22:33:40,412 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-06 22:33:40,413 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-06 22:33:40,541 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 22:33:40,699 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-06 22:33:40,699 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-06 22:33:40,790 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 22:33:40,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:33:40,887 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 22:33:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:33:40,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:41,068 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_869 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_869) c_~get_5~0.base) (+ (* c_~id_3~0 4) c_~get_5~0.offset)) 4294967296))) is different from false [2023-11-06 22:33:42,314 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:33:42,314 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 37 treesize of output 38 [2023-11-06 22:33:42,342 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:33:42,343 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 1355 treesize of output 1323 [2023-11-06 22:33:42,381 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 157 treesize of output 151 [2023-11-06 22:33:42,394 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 314 treesize of output 290 [2023-11-06 22:33:42,414 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 290 treesize of output 242 [2023-11-06 22:33:42,431 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 126 treesize of output 114 [2023-11-06 22:33:43,576 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:33:43,577 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 486 treesize of output 585 [2023-11-06 22:33:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-11-06 22:33:46,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753518080] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:33:46,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:33:46,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 28 [2023-11-06 22:33:46,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444368284] [2023-11-06 22:33:46,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:46,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-06 22:33:46,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:46,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-06 22:33:46,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=651, Unknown=7, NotChecked=54, Total=870 [2023-11-06 22:33:47,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 526 out of 1518 [2023-11-06 22:33:47,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 220 transitions, 1812 flow. Second operand has 30 states, 30 states have (on average 527.6) internal successors, (15828), 30 states have internal predecessors, (15828), 0 states have call successors, (0), 0 states 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 22:33:47,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:47,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 526 of 1518 [2023-11-06 22:33:47,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:53,516 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]