./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-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_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/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_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/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_bc486121-c35f-45f2-8990-f793d9143408/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 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:54:52,179 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:54:52,270 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:54:52,284 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:54:52,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:54:52,323 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:54:52,325 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:54:52,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:54:52,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:54:52,333 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:54:52,335 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:54:52,336 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:54:52,336 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:54:52,338 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:54:52,339 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:54:52,339 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:54:52,340 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:54:52,340 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:54:52,341 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:54:52,341 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:54:52,342 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:54:52,342 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:54:52,343 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:54:52,343 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:54:52,344 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:54:52,344 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:54:52,345 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:54:52,346 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:54:52,346 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:54:52,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:54:52,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:54:52,348 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:54:52,349 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:54:52,349 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:54:52,349 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:54:52,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:54:52,350 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:54:52,350 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:54:52,350 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:54:52,350 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:54:52,351 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:54:52,351 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_bc486121-c35f-45f2-8990-f793d9143408/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 [2023-11-06 22:54:52,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:54:52,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:54:52,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:54:52,758 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:54:52,759 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:54:52,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2023-11-06 22:54:55,996 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:54:56,234 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:54:56,235 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2023-11-06 22:54:56,246 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/data/d4d7c75de/5274d2598a5e45c5bf78e07f7b72706d/FLAG917caed1b [2023-11-06 22:54:56,265 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/data/d4d7c75de/5274d2598a5e45c5bf78e07f7b72706d [2023-11-06 22:54:56,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:54:56,271 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:54:56,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:54:56,273 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:54:56,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:54:56,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:56,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d38d570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56, skipping insertion in model container [2023-11-06 22:54:56,283 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:56,331 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:54:56,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:54:56,680 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:54:56,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:54:56,761 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:54:56,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56 WrapperNode [2023-11-06 22:54:56,762 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:54:56,763 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:54:56,763 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:54:56,764 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:54:56,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:56,787 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:56,832 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 347 [2023-11-06 22:54:56,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:54:56,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:54:56,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:54:56,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:54:56,846 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:56,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:56,858 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:56,870 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:56,885 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:56,892 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:56,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:56,898 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:56,904 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:54:56,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:54:56,906 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:54:56,906 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:54:56,907 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:56,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:54:56,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:54:56,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:54:56,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:54:56,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:54:56,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:54:56,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:54:56,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:54:56,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:54:56,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:54:56,999 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:54:56,999 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:54:56,999 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:54:56,999 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:54:57,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:54:57,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:54:57,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:54:57,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:54:57,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:54:57,003 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 22:54:57,154 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:54:57,156 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:54:58,078 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:54:58,108 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:54:58,113 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:54:58,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:54:58 BoogieIcfgContainer [2023-11-06 22:54:58,119 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:54:58,123 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:54:58,124 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:54:58,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:54:58,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:54:56" (1/3) ... [2023-11-06 22:54:58,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee34304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:54:58, skipping insertion in model container [2023-11-06 22:54:58,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (2/3) ... [2023-11-06 22:54:58,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee34304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:54:58, skipping insertion in model container [2023-11-06 22:54:58,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:54:58" (3/3) ... [2023-11-06 22:54:58,140 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2023-11-06 22:54:58,154 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:54:58,168 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:54:58,171 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-11-06 22:54:58,171 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:54:58,391 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:54:58,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 435 places, 459 transitions, 939 flow [2023-11-06 22:54:58,821 INFO L124 PetriNetUnfolderBase]: 34/456 cut-off events. [2023-11-06 22:54:58,822 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:54:58,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 456 events. 34/456 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1068 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 346. Up to 3 conditions per place. [2023-11-06 22:54:58,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 435 places, 459 transitions, 939 flow [2023-11-06 22:54:58,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 432 transitions, 879 flow [2023-11-06 22:54:58,876 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:54:58,898 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 409 places, 432 transitions, 879 flow [2023-11-06 22:54:58,904 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 409 places, 432 transitions, 879 flow [2023-11-06 22:54:58,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 432 transitions, 879 flow [2023-11-06 22:54:59,052 INFO L124 PetriNetUnfolderBase]: 33/432 cut-off events. [2023-11-06 22:54:59,052 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:54:59,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 432 events. 33/432 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 988 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 346. Up to 3 conditions per place. [2023-11-06 22:54:59,094 INFO L119 LiptonReduction]: Number of co-enabled transitions 44160 [2023-11-06 22:55:26,094 INFO L134 LiptonReduction]: Checked pairs total: 57361 [2023-11-06 22:55:26,094 INFO L136 LiptonReduction]: Total number of compositions: 545 [2023-11-06 22:55:26,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:55:26,116 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;@5b637335, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:55:26,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2023-11-06 22:55:26,119 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:55:26,120 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:55:26,120 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:55:26,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:55:26,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:55:26,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-06 22:55:26,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:26,127 INFO L85 PathProgramCache]: Analyzing trace with hash 60050, now seen corresponding path program 1 times [2023-11-06 22:55:26,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:26,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489011280] [2023-11-06 22:55:26,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:26,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:26,566 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 22:55:26,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:26,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489011280] [2023-11-06 22:55:26,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489011280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:26,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:26,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:55:26,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076633951] [2023-11-06 22:55:26,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:26,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:55:26,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:26,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:55:26,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:55:26,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 1004 [2023-11-06 22:55:26,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 418.6666666666667) internal successors, (1256), 3 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:26,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:55:26,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 1004 [2023-11-06 22:55:26,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:55:30,083 INFO L124 PetriNetUnfolderBase]: 12933/18008 cut-off events. [2023-11-06 22:55:30,084 INFO L125 PetriNetUnfolderBase]: For 658/658 co-relation queries the response was YES. [2023-11-06 22:55:30,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36608 conditions, 18008 events. 12933/18008 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 97410 event pairs, 11113 based on Foata normal form. 0/7238 useless extension candidates. Maximal degree in co-relation 34416. Up to 18004 conditions per place. [2023-11-06 22:55:30,302 INFO L140 encePairwiseOnDemand]: 985/1004 looper letters, 63 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2023-11-06 22:55:30,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 295 flow [2023-11-06 22:55:30,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:55:30,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:55:30,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1336 transitions. [2023-11-06 22:55:30,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435590969455511 [2023-11-06 22:55:30,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1336 transitions. [2023-11-06 22:55:30,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1336 transitions. [2023-11-06 22:55:30,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:55:30,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1336 transitions. [2023-11-06 22:55:30,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 445.3333333333333) internal successors, (1336), 3 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:30,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1004.0) internal successors, (4016), 4 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:30,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1004.0) internal successors, (4016), 4 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:30,376 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 155 flow. Second operand 3 states and 1336 transitions. [2023-11-06 22:55:30,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 295 flow [2023-11-06 22:55:30,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 286 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:55:30,412 INFO L231 Difference]: Finished difference. Result has 65 places, 70 transitions, 198 flow [2023-11-06 22:55:30,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1004, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=65, PETRI_TRANSITIONS=70} [2023-11-06 22:55:30,419 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-11-06 22:55:30,419 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 70 transitions, 198 flow [2023-11-06 22:55:30,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 418.6666666666667) internal successors, (1256), 3 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:30,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:55:30,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:55:30,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:55:30,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-06 22:55:30,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:30,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1864665, now seen corresponding path program 1 times [2023-11-06 22:55:30,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:30,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290712709] [2023-11-06 22:55:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:30,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:30,552 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 22:55:30,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:30,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290712709] [2023-11-06 22:55:30,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290712709] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:55:30,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450899444] [2023-11-06 22:55:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:30,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:55:30,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:55:30,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:55:30,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:55:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:30,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:55:30,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:55:30,759 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 22:55:30,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:55:30,792 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 22:55:30,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450899444] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:55:30,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:55:30,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:55:30,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338744867] [2023-11-06 22:55:30,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:55:30,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:55:30,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:30,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:55:30,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:55:30,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 1004 [2023-11-06 22:55:30,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 70 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 419.14285714285717) internal successors, (2934), 7 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:30,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:55:30,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 1004 [2023-11-06 22:55:30,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:55:33,970 INFO L124 PetriNetUnfolderBase]: 12951/18035 cut-off events. [2023-11-06 22:55:33,971 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2023-11-06 22:55:33,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36540 conditions, 18035 events. 12951/18035 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 97532 event pairs, 11113 based on Foata normal form. 0/7257 useless extension candidates. Maximal degree in co-relation 36385. Up to 18004 conditions per place. [2023-11-06 22:55:34,094 INFO L140 encePairwiseOnDemand]: 991/1004 looper letters, 60 selfloop transitions, 37 changer transitions 0/97 dead transitions. [2023-11-06 22:55:34,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 97 transitions, 512 flow [2023-11-06 22:55:34,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:55:34,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:55:34,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3032 transitions. [2023-11-06 22:55:34,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43141718838929993 [2023-11-06 22:55:34,110 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3032 transitions. [2023-11-06 22:55:34,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3032 transitions. [2023-11-06 22:55:34,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:55:34,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3032 transitions. [2023-11-06 22:55:34,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 433.14285714285717) internal successors, (3032), 7 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:34,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1004.0) internal successors, (8032), 8 states have internal predecessors, (8032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:34,158 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1004.0) internal successors, (8032), 8 states have internal predecessors, (8032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:34,158 INFO L175 Difference]: Start difference. First operand has 65 places, 70 transitions, 198 flow. Second operand 7 states and 3032 transitions. [2023-11-06 22:55:34,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 97 transitions, 512 flow [2023-11-06 22:55:34,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 97 transitions, 486 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:55:34,164 INFO L231 Difference]: Finished difference. Result has 72 places, 97 transitions, 428 flow [2023-11-06 22:55:34,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1004, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=72, PETRI_TRANSITIONS=97} [2023-11-06 22:55:34,165 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-11-06 22:55:34,166 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 97 transitions, 428 flow [2023-11-06 22:55:34,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 419.14285714285717) internal successors, (2934), 7 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:34,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:55:34,170 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-06 22:55:34,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:55:34,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:55:34,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-06 22:55:34,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:34,378 INFO L85 PathProgramCache]: Analyzing trace with hash 57806354, now seen corresponding path program 1 times [2023-11-06 22:55:34,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:34,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216991527] [2023-11-06 22:55:34,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:34,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:55:34,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:34,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216991527] [2023-11-06 22:55:34,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216991527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:34,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:34,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:55:34,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656645495] [2023-11-06 22:55:34,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:34,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:55:34,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:34,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:55:34,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:55:34,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 1004 [2023-11-06 22:55:34,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 97 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 419.3333333333333) internal successors, (1258), 3 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:34,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:55:34,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 1004 [2023-11-06 22:55:34,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:55:37,605 INFO L124 PetriNetUnfolderBase]: 12942/18023 cut-off events. [2023-11-06 22:55:37,606 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2023-11-06 22:55:37,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36550 conditions, 18023 events. 12942/18023 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 97500 event pairs, 11113 based on Foata normal form. 0/7259 useless extension candidates. Maximal degree in co-relation 36456. Up to 17995 conditions per place. [2023-11-06 22:55:37,747 INFO L140 encePairwiseOnDemand]: 999/1004 looper letters, 79 selfloop transitions, 6 changer transitions 0/85 dead transitions. [2023-11-06 22:55:37,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 85 transitions, 517 flow [2023-11-06 22:55:37,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:55:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:55:37,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1318 transitions. [2023-11-06 22:55:37,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43758300132802125 [2023-11-06 22:55:37,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1318 transitions. [2023-11-06 22:55:37,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1318 transitions. [2023-11-06 22:55:37,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:55:37,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1318 transitions. [2023-11-06 22:55:37,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 439.3333333333333) internal successors, (1318), 3 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:37,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1004.0) internal successors, (4016), 4 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:37,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1004.0) internal successors, (4016), 4 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:37,779 INFO L175 Difference]: Start difference. First operand has 72 places, 97 transitions, 428 flow. Second operand 3 states and 1318 transitions. [2023-11-06 22:55:37,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 85 transitions, 517 flow [2023-11-06 22:55:37,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 85 transitions, 480 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-06 22:55:37,787 INFO L231 Difference]: Finished difference. Result has 69 places, 85 transitions, 322 flow [2023-11-06 22:55:37,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1004, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=69, PETRI_TRANSITIONS=85} [2023-11-06 22:55:37,791 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-11-06 22:55:37,792 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 85 transitions, 322 flow [2023-11-06 22:55:37,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 419.3333333333333) internal successors, (1258), 3 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:37,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:55:37,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:55:37,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:55:37,794 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-06 22:55:37,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:37,795 INFO L85 PathProgramCache]: Analyzing trace with hash -209848217, now seen corresponding path program 1 times [2023-11-06 22:55:37,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:37,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236390049] [2023-11-06 22:55:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:37,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:38,065 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 22:55:38,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:38,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236390049] [2023-11-06 22:55:38,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236390049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:38,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:38,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:55:38,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848445365] [2023-11-06 22:55:38,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:38,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:55:38,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:38,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:55:38,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:55:38,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 1004 [2023-11-06 22:55:38,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 85 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 413.5) internal successors, (1654), 4 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:38,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:55:38,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 1004 [2023-11-06 22:55:38,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:55:42,676 INFO L124 PetriNetUnfolderBase]: 24512/33992 cut-off events. [2023-11-06 22:55:42,676 INFO L125 PetriNetUnfolderBase]: For 313/313 co-relation queries the response was YES. [2023-11-06 22:55:42,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68874 conditions, 33992 events. 24512/33992 cut-off events. For 313/313 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 198258 event pairs, 20674 based on Foata normal form. 0/13795 useless extension candidates. Maximal degree in co-relation 68735. Up to 17160 conditions per place. [2023-11-06 22:55:42,947 INFO L140 encePairwiseOnDemand]: 999/1004 looper letters, 153 selfloop transitions, 4 changer transitions 0/157 dead transitions. [2023-11-06 22:55:42,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 157 transitions, 883 flow [2023-11-06 22:55:42,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:55:42,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:55:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1768 transitions. [2023-11-06 22:55:42,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4402390438247012 [2023-11-06 22:55:42,958 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1768 transitions. [2023-11-06 22:55:42,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1768 transitions. [2023-11-06 22:55:42,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:55:42,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1768 transitions. [2023-11-06 22:55:42,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:42,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1004.0) internal successors, (5020), 5 states have internal predecessors, (5020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:42,988 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1004.0) internal successors, (5020), 5 states have internal predecessors, (5020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:42,988 INFO L175 Difference]: Start difference. First operand has 69 places, 85 transitions, 322 flow. Second operand 4 states and 1768 transitions. [2023-11-06 22:55:42,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 157 transitions, 883 flow [2023-11-06 22:55:42,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 157 transitions, 861 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:55:42,998 INFO L231 Difference]: Finished difference. Result has 72 places, 86 transitions, 329 flow [2023-11-06 22:55:42,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1004, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=72, PETRI_TRANSITIONS=86} [2023-11-06 22:55:43,001 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-11-06 22:55:43,002 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 86 transitions, 329 flow [2023-11-06 22:55:43,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 413.5) internal successors, (1654), 4 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:43,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:55:43,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:55:43,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:55:43,009 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-06 22:55:43,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:43,010 INFO L85 PathProgramCache]: Analyzing trace with hash -209848304, now seen corresponding path program 1 times [2023-11-06 22:55:43,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:43,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754046704] [2023-11-06 22:55:43,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:43,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:43,233 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 22:55:43,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:43,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754046704] [2023-11-06 22:55:43,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754046704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:43,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:43,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:55:43,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082423847] [2023-11-06 22:55:43,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:43,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:55:43,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:43,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:55:43,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:55:43,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 409 out of 1004 [2023-11-06 22:55:43,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 86 transitions, 329 flow. Second operand has 5 states, 5 states have (on average 410.2) internal successors, (2051), 5 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:43,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:55:43,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 409 of 1004 [2023-11-06 22:55:43,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:55:52,563 INFO L124 PetriNetUnfolderBase]: 47304/65570 cut-off events. [2023-11-06 22:55:52,563 INFO L125 PetriNetUnfolderBase]: For 3985/3985 co-relation queries the response was YES. [2023-11-06 22:55:52,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134460 conditions, 65570 events. 47304/65570 cut-off events. For 3985/3985 co-relation queries the response was YES. Maximal size of possible extension queue 2670. Compared 415996 event pairs, 39796 based on Foata normal form. 676/28859 useless extension candidates. Maximal degree in co-relation 134272. Up to 32789 conditions per place. [2023-11-06 22:55:53,045 INFO L140 encePairwiseOnDemand]: 996/1004 looper letters, 136 selfloop transitions, 11 changer transitions 0/147 dead transitions. [2023-11-06 22:55:53,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 147 transitions, 796 flow [2023-11-06 22:55:53,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:55:53,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:55:53,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2573 transitions. [2023-11-06 22:55:53,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42712483399734397 [2023-11-06 22:55:53,059 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2573 transitions. [2023-11-06 22:55:53,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2573 transitions. [2023-11-06 22:55:53,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:55:53,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2573 transitions. [2023-11-06 22:55:53,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 428.8333333333333) internal successors, (2573), 6 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:53,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1004.0) internal successors, (7028), 7 states have internal predecessors, (7028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:53,090 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1004.0) internal successors, (7028), 7 states have internal predecessors, (7028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:53,090 INFO L175 Difference]: Start difference. First operand has 72 places, 86 transitions, 329 flow. Second operand 6 states and 2573 transitions. [2023-11-06 22:55:53,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 147 transitions, 796 flow [2023-11-06 22:55:53,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 147 transitions, 792 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-06 22:55:53,097 INFO L231 Difference]: Finished difference. Result has 80 places, 89 transitions, 381 flow [2023-11-06 22:55:53,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1004, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=381, PETRI_PLACES=80, PETRI_TRANSITIONS=89} [2023-11-06 22:55:53,101 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 8 predicate places. [2023-11-06 22:55:53,101 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 89 transitions, 381 flow [2023-11-06 22:55:53,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 410.2) internal successors, (2051), 5 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:53,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:55:53,103 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:55:53,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:55:53,103 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-06 22:55:53,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:53,104 INFO L85 PathProgramCache]: Analyzing trace with hash -282570307, now seen corresponding path program 2 times [2023-11-06 22:55:53,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:53,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442325973] [2023-11-06 22:55:53,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:53,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:53,231 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 22:55:53,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:53,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442325973] [2023-11-06 22:55:53,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442325973] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:55:53,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808007822] [2023-11-06 22:55:53,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:55:53,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:55:53,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:55:53,238 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:55:53,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:55:53,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:55:53,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:55:53,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:55:53,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:55:53,393 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 22:55:53,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:55:53,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808007822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:53,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:55:53,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:55:53,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803668058] [2023-11-06 22:55:53,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:53,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:55:53,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:53,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:55:53,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:55:53,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 1004 [2023-11-06 22:55:53,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 89 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 425.0) internal successors, (1275), 3 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:55:53,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:55:53,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 1004 [2023-11-06 22:55:53,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:56:01,229 INFO L124 PetriNetUnfolderBase]: 47304/65569 cut-off events. [2023-11-06 22:56:01,229 INFO L125 PetriNetUnfolderBase]: For 6698/6698 co-relation queries the response was YES. [2023-11-06 22:56:01,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136168 conditions, 65569 events. 47304/65569 cut-off events. For 6698/6698 co-relation queries the response was YES. Maximal size of possible extension queue 2622. Compared 414880 event pairs, 39796 based on Foata normal form. 1/28184 useless extension candidates. Maximal degree in co-relation 135981. Up to 65564 conditions per place. [2023-11-06 22:56:01,717 INFO L140 encePairwiseOnDemand]: 1001/1004 looper letters, 82 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2023-11-06 22:56:01,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 88 transitions, 547 flow [2023-11-06 22:56:01,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:56:01,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:56:01,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1333 transitions. [2023-11-06 22:56:01,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44256308100929614 [2023-11-06 22:56:01,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1333 transitions. [2023-11-06 22:56:01,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1333 transitions. [2023-11-06 22:56:01,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:56:01,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1333 transitions. [2023-11-06 22:56:01,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 444.3333333333333) internal successors, (1333), 3 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:01,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1004.0) internal successors, (4016), 4 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:01,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1004.0) internal successors, (4016), 4 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:01,745 INFO L175 Difference]: Start difference. First operand has 80 places, 89 transitions, 381 flow. Second operand 3 states and 1333 transitions. [2023-11-06 22:56:01,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 88 transitions, 547 flow [2023-11-06 22:56:01,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 88 transitions, 535 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 22:56:01,756 INFO L231 Difference]: Finished difference. Result has 80 places, 88 transitions, 371 flow [2023-11-06 22:56:01,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1004, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=78, 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=371, PETRI_PLACES=80, PETRI_TRANSITIONS=88} [2023-11-06 22:56:01,757 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 8 predicate places. [2023-11-06 22:56:01,758 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 88 transitions, 371 flow [2023-11-06 22:56:01,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 425.0) internal successors, (1275), 3 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:01,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:56:01,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:01,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:56:01,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:01,968 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-06 22:56:01,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:01,968 INFO L85 PathProgramCache]: Analyzing trace with hash 2040006454, now seen corresponding path program 1 times [2023-11-06 22:56:01,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:01,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759511348] [2023-11-06 22:56:01,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:01,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:02,207 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 22:56:02,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:02,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759511348] [2023-11-06 22:56:02,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759511348] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:56:02,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467656782] [2023-11-06 22:56:02,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:02,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:02,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:02,212 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:02,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc486121-c35f-45f2-8990-f793d9143408/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:56:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:02,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:56:02,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:02,453 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 22:56:02,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:56:02,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467656782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:02,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:56:02,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-06 22:56:02,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359003692] [2023-11-06 22:56:02,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:02,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:56:02,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:02,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:56:02,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:02,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 430 out of 1004 [2023-11-06 22:56:02,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 88 transitions, 371 flow. Second operand has 3 states, 3 states have (on average 432.3333333333333) internal successors, (1297), 3 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:02,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:56:02,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 430 of 1004 [2023-11-06 22:56:02,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand