./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/triangular-longest-2.i --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_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/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_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/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_fd14b720-2f05-4d02-a00a-921f6cf832ba/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 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:11:10,910 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:11:11,056 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:11:11,065 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:11:11,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:11:11,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:11:11,120 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:11:11,120 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:11:11,122 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:11:11,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:11:11,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:11:11,130 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:11:11,130 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:11:11,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:11:11,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:11:11,134 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:11:11,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:11:11,135 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:11:11,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:11:11,136 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:11:11,136 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:11:11,137 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:11:11,138 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:11:11,138 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:11:11,139 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:11:11,139 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:11:11,140 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:11:11,141 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:11:11,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:11:11,142 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:11:11,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:11:11,145 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:11:11,145 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:11:11,145 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:11:11,146 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:11:11,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:11:11,147 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:11:11,147 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:11:11,147 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:11:11,148 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:11:11,148 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:11:11,149 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_fd14b720-2f05-4d02-a00a-921f6cf832ba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 [2023-11-06 22:11:11,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:11:11,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:11:11,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:11:11,486 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:11:11,487 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:11:11,488 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/triangular-longest-2.i [2023-11-06 22:11:15,154 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:11:15,510 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:11:15,511 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/sv-benchmarks/c/pthread/triangular-longest-2.i [2023-11-06 22:11:15,532 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/data/08e68c339/c83186ed25974317b618942327bd3d8b/FLAG6a97a7a9c [2023-11-06 22:11:15,549 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/data/08e68c339/c83186ed25974317b618942327bd3d8b [2023-11-06 22:11:15,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:11:15,554 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:11:15,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:11:15,556 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:11:15,562 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:11:15,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:11:15" (1/1) ... [2023-11-06 22:11:15,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595bda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:15, skipping insertion in model container [2023-11-06 22:11:15,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:11:15" (1/1) ... [2023-11-06 22:11:15,616 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:11:16,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:11:16,093 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:11:16,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:11:16,225 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:11:16,225 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:11:16,235 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:11:16,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:16 WrapperNode [2023-11-06 22:11:16,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:11:16,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:11:16,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:11:16,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:11:16,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:16" (1/1) ... [2023-11-06 22:11:16,290 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:16" (1/1) ... [2023-11-06 22:11:16,319 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2023-11-06 22:11:16,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:11:16,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:11:16,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:11:16,321 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:11:16,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:16" (1/1) ... [2023-11-06 22:11:16,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:16" (1/1) ... [2023-11-06 22:11:16,336 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:16" (1/1) ... [2023-11-06 22:11:16,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:16" (1/1) ... [2023-11-06 22:11:16,354 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:16" (1/1) ... [2023-11-06 22:11:16,368 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:16" (1/1) ... [2023-11-06 22:11:16,370 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:16" (1/1) ... [2023-11-06 22:11:16,372 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:16" (1/1) ... [2023-11-06 22:11:16,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:11:16,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:11:16,380 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:11:16,380 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:11:16,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:16" (1/1) ... [2023-11-06 22:11:16,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:11:16,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:16,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:11:16,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:11:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-06 22:11:16,478 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-06 22:11:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-06 22:11:16,478 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-06 22:11:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:11:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:11:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:11:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:11:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:11:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:11:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:11:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:11:16,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:11:16,485 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 22:11:16,713 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:11:16,715 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:11:16,891 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:11:16,951 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:11:16,951 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:11:16,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:11:16 BoogieIcfgContainer [2023-11-06 22:11:16,955 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:11:16,957 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:11:16,958 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:11:16,962 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:11:16,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:11:15" (1/3) ... [2023-11-06 22:11:16,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45926ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:11:16, skipping insertion in model container [2023-11-06 22:11:16,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:16" (2/3) ... [2023-11-06 22:11:16,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45926ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:11:16, skipping insertion in model container [2023-11-06 22:11:16,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:11:16" (3/3) ... [2023-11-06 22:11:16,965 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2023-11-06 22:11:16,976 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:11:16,986 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:11:16,986 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 22:11:16,986 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:11:17,060 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:11:17,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 85 transitions, 178 flow [2023-11-06 22:11:17,166 INFO L124 PetriNetUnfolderBase]: 6/83 cut-off events. [2023-11-06 22:11:17,166 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:11:17,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 83 events. 6/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 157 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2023-11-06 22:11:17,176 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 85 transitions, 178 flow [2023-11-06 22:11:17,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 83 transitions, 172 flow [2023-11-06 22:11:17,188 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:11:17,202 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 83 transitions, 172 flow [2023-11-06 22:11:17,206 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 83 transitions, 172 flow [2023-11-06 22:11:17,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 83 transitions, 172 flow [2023-11-06 22:11:17,256 INFO L124 PetriNetUnfolderBase]: 6/83 cut-off events. [2023-11-06 22:11:17,257 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:11:17,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 83 events. 6/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2023-11-06 22:11:17,266 INFO L119 LiptonReduction]: Number of co-enabled transitions 2448 [2023-11-06 22:11:20,946 INFO L134 LiptonReduction]: Checked pairs total: 2543 [2023-11-06 22:11:20,947 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-11-06 22:11:20,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:11:20,977 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;@59a2c35e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:11:20,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-06 22:11:20,981 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:11:20,982 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2023-11-06 22:11:20,982 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:11:20,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:20,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:11:20,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:11:20,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:20,991 INFO L85 PathProgramCache]: Analyzing trace with hash 10936612, now seen corresponding path program 1 times [2023-11-06 22:11:21,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:21,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528199027] [2023-11-06 22:11:21,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:21,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:21,377 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 22:11:21,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:21,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528199027] [2023-11-06 22:11:21,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528199027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:21,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:21,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:11:21,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111045146] [2023-11-06 22:11:21,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:21,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:21,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:21,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:21,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:21,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 171 [2023-11-06 22:11:21,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:21,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:21,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 171 [2023-11-06 22:11:21,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:21,688 INFO L124 PetriNetUnfolderBase]: 300/479 cut-off events. [2023-11-06 22:11:21,689 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:11:21,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 479 events. 300/479 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1810 event pairs, 115 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 964. Up to 256 conditions per place. [2023-11-06 22:11:21,704 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 26 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2023-11-06 22:11:21,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 30 transitions, 126 flow [2023-11-06 22:11:21,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:21,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:21,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-11-06 22:11:21,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49317738791423 [2023-11-06 22:11:21,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-11-06 22:11:21,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-11-06 22:11:21,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:21,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-11-06 22:11:21,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:21,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:21,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:21,769 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 48 flow. Second operand 3 states and 253 transitions. [2023-11-06 22:11:21,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 30 transitions, 126 flow [2023-11-06 22:11:21,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:11:21,776 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 70 flow [2023-11-06 22:11:21,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2023-11-06 22:11:21,784 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2023-11-06 22:11:21,785 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 70 flow [2023-11-06 22:11:21,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:21,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:21,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:11:21,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:11:21,787 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:11:21,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:21,789 INFO L85 PathProgramCache]: Analyzing trace with hash 10936611, now seen corresponding path program 1 times [2023-11-06 22:11:21,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:21,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603417817] [2023-11-06 22:11:21,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:21,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:21,891 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 22:11:21,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:21,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603417817] [2023-11-06 22:11:21,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603417817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:21,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:21,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:11:21,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754792178] [2023-11-06 22:11:21,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:21,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:21,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:21,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:21,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:21,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 171 [2023-11-06 22:11:21,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:21,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:21,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 171 [2023-11-06 22:11:21,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:22,079 INFO L124 PetriNetUnfolderBase]: 291/480 cut-off events. [2023-11-06 22:11:22,079 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-11-06 22:11:22,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 480 events. 291/480 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1906 event pairs, 99 based on Foata normal form. 17/325 useless extension candidates. Maximal degree in co-relation 1111. Up to 281 conditions per place. [2023-11-06 22:11:22,086 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-11-06 22:11:22,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 170 flow [2023-11-06 22:11:22,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:22,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:22,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-11-06 22:11:22,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2023-11-06 22:11:22,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-11-06 22:11:22,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-11-06 22:11:22,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:22,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-11-06 22:11:22,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,098 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 70 flow. Second operand 3 states and 246 transitions. [2023-11-06 22:11:22,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 170 flow [2023-11-06 22:11:22,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:11:22,102 INFO L231 Difference]: Finished difference. Result has 26 places, 24 transitions, 100 flow [2023-11-06 22:11:22,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=26, PETRI_TRANSITIONS=24} [2023-11-06 22:11:22,103 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2023-11-06 22:11:22,104 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 100 flow [2023-11-06 22:11:22,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:22,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:11:22,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:11:22,106 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:11:22,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:22,107 INFO L85 PathProgramCache]: Analyzing trace with hash 10936648, now seen corresponding path program 1 times [2023-11-06 22:11:22,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:22,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41421473] [2023-11-06 22:11:22,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:22,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:22,207 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 22:11:22,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:22,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41421473] [2023-11-06 22:11:22,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41421473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:22,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:22,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:11:22,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511099877] [2023-11-06 22:11:22,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:22,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:22,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:22,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:22,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:22,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-11-06 22:11:22,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:22,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-11-06 22:11:22,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:22,378 INFO L124 PetriNetUnfolderBase]: 416/697 cut-off events. [2023-11-06 22:11:22,378 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2023-11-06 22:11:22,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1761 conditions, 697 events. 416/697 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3144 event pairs, 223 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 1748. Up to 481 conditions per place. [2023-11-06 22:11:22,387 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-06 22:11:22,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 43 transitions, 269 flow [2023-11-06 22:11:22,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:22,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:22,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2023-11-06 22:11:22,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2023-11-06 22:11:22,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2023-11-06 22:11:22,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2023-11-06 22:11:22,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:22,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2023-11-06 22:11:22,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,400 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,400 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 100 flow. Second operand 3 states and 243 transitions. [2023-11-06 22:11:22,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 43 transitions, 269 flow [2023-11-06 22:11:22,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 43 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:22,406 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 108 flow [2023-11-06 22:11:22,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2023-11-06 22:11:22,409 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-11-06 22:11:22,409 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 108 flow [2023-11-06 22:11:22,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:22,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:11:22,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:11:22,417 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:11:22,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:22,420 INFO L85 PathProgramCache]: Analyzing trace with hash 339036680, now seen corresponding path program 1 times [2023-11-06 22:11:22,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:22,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862060887] [2023-11-06 22:11:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:22,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:22,570 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 22:11:22,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:22,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862060887] [2023-11-06 22:11:22,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862060887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:22,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:22,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:11:22,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887169569] [2023-11-06 22:11:22,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:22,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:22,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:22,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:22,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:22,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-11-06 22:11:22,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:22,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-11-06 22:11:22,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:22,717 INFO L124 PetriNetUnfolderBase]: 361/610 cut-off events. [2023-11-06 22:11:22,717 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2023-11-06 22:11:22,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 610 events. 361/610 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2772 event pairs, 67 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 1666. Up to 466 conditions per place. [2023-11-06 22:11:22,725 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 34 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-11-06 22:11:22,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 36 transitions, 218 flow [2023-11-06 22:11:22,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:22,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2023-11-06 22:11:22,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46393762183235865 [2023-11-06 22:11:22,728 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2023-11-06 22:11:22,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2023-11-06 22:11:22,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:22,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2023-11-06 22:11:22,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,734 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 108 flow. Second operand 3 states and 238 transitions. [2023-11-06 22:11:22,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 36 transitions, 218 flow [2023-11-06 22:11:22,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 36 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:22,738 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 106 flow [2023-11-06 22:11:22,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2023-11-06 22:11:22,742 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-11-06 22:11:22,742 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 106 flow [2023-11-06 22:11:22,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:22,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:11:22,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:11:22,743 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:11:22,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:22,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1920930763, now seen corresponding path program 1 times [2023-11-06 22:11:22,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:22,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283026410] [2023-11-06 22:11:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:22,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:22,807 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 22:11:22,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:22,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283026410] [2023-11-06 22:11:22,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283026410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:22,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:22,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:11:22,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466208542] [2023-11-06 22:11:22,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:22,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:22,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:22,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:22,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:22,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 171 [2023-11-06 22:11:22,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:22,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 171 [2023-11-06 22:11:22,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:22,935 INFO L124 PetriNetUnfolderBase]: 339/582 cut-off events. [2023-11-06 22:11:22,936 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2023-11-06 22:11:22,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 582 events. 339/582 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2634 event pairs, 125 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 1642. Up to 309 conditions per place. [2023-11-06 22:11:22,943 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 39 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-11-06 22:11:22,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 43 transitions, 276 flow [2023-11-06 22:11:22,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:22,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-11-06 22:11:22,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2023-11-06 22:11:22,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-11-06 22:11:22,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-11-06 22:11:22,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:22,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-11-06 22:11:22,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,952 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,952 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 106 flow. Second operand 3 states and 247 transitions. [2023-11-06 22:11:22,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 43 transitions, 276 flow [2023-11-06 22:11:22,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 43 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:11:22,957 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 130 flow [2023-11-06 22:11:22,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2023-11-06 22:11:22,958 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2023-11-06 22:11:22,958 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 130 flow [2023-11-06 22:11:22,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:22,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:22,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:11:22,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:11:22,960 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:11:22,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:22,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1920930764, now seen corresponding path program 1 times [2023-11-06 22:11:22,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:22,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514153792] [2023-11-06 22:11:22,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:22,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:23,012 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 22:11:23,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:23,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514153792] [2023-11-06 22:11:23,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514153792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:23,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:23,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:11:23,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077245909] [2023-11-06 22:11:23,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:23,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:23,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:23,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:23,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:23,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 171 [2023-11-06 22:11:23,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:23,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 171 [2023-11-06 22:11:23,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:23,155 INFO L124 PetriNetUnfolderBase]: 317/554 cut-off events. [2023-11-06 22:11:23,156 INFO L125 PetriNetUnfolderBase]: For 325/325 co-relation queries the response was YES. [2023-11-06 22:11:23,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1701 conditions, 554 events. 317/554 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2527 event pairs, 97 based on Foata normal form. 24/530 useless extension candidates. Maximal degree in co-relation 1684. Up to 333 conditions per place. [2023-11-06 22:11:23,163 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 39 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-11-06 22:11:23,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 294 flow [2023-11-06 22:11:23,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:23,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:23,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-11-06 22:11:23,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2023-11-06 22:11:23,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-11-06 22:11:23,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-11-06 22:11:23,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:23,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-11-06 22:11:23,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,172 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,172 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 130 flow. Second operand 3 states and 246 transitions. [2023-11-06 22:11:23,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 294 flow [2023-11-06 22:11:23,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 43 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:11:23,177 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 138 flow [2023-11-06 22:11:23,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-11-06 22:11:23,182 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2023-11-06 22:11:23,182 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 138 flow [2023-11-06 22:11:23,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:23,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:11:23,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:11:23,185 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:11:23,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:23,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1920930808, now seen corresponding path program 1 times [2023-11-06 22:11:23,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:23,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497493288] [2023-11-06 22:11:23,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:23,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:23,255 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 22:11:23,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:23,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497493288] [2023-11-06 22:11:23,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497493288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:23,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:23,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:11:23,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371116468] [2023-11-06 22:11:23,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:23,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:23,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:23,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:23,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:23,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-11-06 22:11:23,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:23,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-11-06 22:11:23,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:23,376 INFO L124 PetriNetUnfolderBase]: 285/510 cut-off events. [2023-11-06 22:11:23,377 INFO L125 PetriNetUnfolderBase]: For 438/438 co-relation queries the response was YES. [2023-11-06 22:11:23,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 510 events. 285/510 cut-off events. For 438/438 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2290 event pairs, 181 based on Foata normal form. 12/486 useless extension candidates. Maximal degree in co-relation 1603. Up to 427 conditions per place. [2023-11-06 22:11:23,383 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 33 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-11-06 22:11:23,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 35 transitions, 257 flow [2023-11-06 22:11:23,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:23,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-11-06 22:11:23,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619883040935672 [2023-11-06 22:11:23,386 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-11-06 22:11:23,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-11-06 22:11:23,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:23,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-11-06 22:11:23,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,391 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,391 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 138 flow. Second operand 3 states and 237 transitions. [2023-11-06 22:11:23,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 35 transitions, 257 flow [2023-11-06 22:11:23,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:23,394 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 136 flow [2023-11-06 22:11:23,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-11-06 22:11:23,396 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2023-11-06 22:11:23,396 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 136 flow [2023-11-06 22:11:23,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:23,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:23,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:11:23,398 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:11:23,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:23,398 INFO L85 PathProgramCache]: Analyzing trace with hash -580686718, now seen corresponding path program 1 times [2023-11-06 22:11:23,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:23,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185690954] [2023-11-06 22:11:23,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:23,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:23,465 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 22:11:23,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:23,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185690954] [2023-11-06 22:11:23,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185690954] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:11:23,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068267853] [2023-11-06 22:11:23,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:23,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:23,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:23,472 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:23,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:11:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:23,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:11:23,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:23,652 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 22:11:23,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:23,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068267853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:23,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:11:23,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 22:11:23,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342517568] [2023-11-06 22:11:23,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:23,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:11:23,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:23,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:11:23,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:11:23,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-11-06 22:11:23,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:23,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-11-06 22:11:23,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:23,794 INFO L124 PetriNetUnfolderBase]: 237/426 cut-off events. [2023-11-06 22:11:23,795 INFO L125 PetriNetUnfolderBase]: For 356/356 co-relation queries the response was YES. [2023-11-06 22:11:23,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 426 events. 237/426 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1844 event pairs, 57 based on Foata normal form. 0/426 useless extension candidates. Maximal degree in co-relation 1370. Up to 220 conditions per place. [2023-11-06 22:11:23,801 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 37 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2023-11-06 22:11:23,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 288 flow [2023-11-06 22:11:23,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:11:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:11:23,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2023-11-06 22:11:23,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2023-11-06 22:11:23,804 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 312 transitions. [2023-11-06 22:11:23,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 312 transitions. [2023-11-06 22:11:23,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:23,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 312 transitions. [2023-11-06 22:11:23,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,809 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,810 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 136 flow. Second operand 4 states and 312 transitions. [2023-11-06 22:11:23,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 288 flow [2023-11-06 22:11:23,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:23,813 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 122 flow [2023-11-06 22:11:23,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2023-11-06 22:11:23,815 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2023-11-06 22:11:23,815 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 122 flow [2023-11-06 22:11:23,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:23,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:23,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:24,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:24,024 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:11:24,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:24,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1530993861, now seen corresponding path program 1 times [2023-11-06 22:11:24,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:24,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585482650] [2023-11-06 22:11:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:24,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:24,107 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 22:11:24,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:24,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585482650] [2023-11-06 22:11:24,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585482650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:24,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:24,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:11:24,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968324150] [2023-11-06 22:11:24,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:24,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:11:24,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:24,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:11:24,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:11:24,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-11-06 22:11:24,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:24,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:24,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-11-06 22:11:24,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:24,355 INFO L124 PetriNetUnfolderBase]: 281/500 cut-off events. [2023-11-06 22:11:24,356 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2023-11-06 22:11:24,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 500 events. 281/500 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2185 event pairs, 61 based on Foata normal form. 30/530 useless extension candidates. Maximal degree in co-relation 1659. Up to 216 conditions per place. [2023-11-06 22:11:24,363 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 39 selfloop transitions, 9 changer transitions 0/48 dead transitions. [2023-11-06 22:11:24,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 48 transitions, 340 flow [2023-11-06 22:11:24,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:11:24,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:11:24,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 393 transitions. [2023-11-06 22:11:24,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45964912280701753 [2023-11-06 22:11:24,367 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 393 transitions. [2023-11-06 22:11:24,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 393 transitions. [2023-11-06 22:11:24,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:24,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 393 transitions. [2023-11-06 22:11:24,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:24,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:24,373 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:24,374 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 122 flow. Second operand 5 states and 393 transitions. [2023-11-06 22:11:24,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 48 transitions, 340 flow [2023-11-06 22:11:24,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 321 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-06 22:11:24,379 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 208 flow [2023-11-06 22:11:24,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2023-11-06 22:11:24,382 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 13 predicate places. [2023-11-06 22:11:24,385 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 208 flow [2023-11-06 22:11:24,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:24,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:24,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:24,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:11:24,387 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:11:24,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:24,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1533292820, now seen corresponding path program 1 times [2023-11-06 22:11:24,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:24,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988109657] [2023-11-06 22:11:24,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:24,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:24,449 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 22:11:24,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:24,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988109657] [2023-11-06 22:11:24,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988109657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:24,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:24,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:11:24,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13990226] [2023-11-06 22:11:24,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:24,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:11:24,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:24,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:11:24,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:11:24,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-11-06 22:11:24,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:24,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:24,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-11-06 22:11:24,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:24,627 INFO L124 PetriNetUnfolderBase]: 301/532 cut-off events. [2023-11-06 22:11:24,627 INFO L125 PetriNetUnfolderBase]: For 810/810 co-relation queries the response was YES. [2023-11-06 22:11:24,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1845 conditions, 532 events. 301/532 cut-off events. For 810/810 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2307 event pairs, 47 based on Foata normal form. 18/550 useless extension candidates. Maximal degree in co-relation 1823. Up to 251 conditions per place. [2023-11-06 22:11:24,635 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 40 selfloop transitions, 12 changer transitions 1/53 dead transitions. [2023-11-06 22:11:24,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 53 transitions, 430 flow [2023-11-06 22:11:24,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:11:24,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:11:24,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2023-11-06 22:11:24,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45497076023391814 [2023-11-06 22:11:24,639 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 389 transitions. [2023-11-06 22:11:24,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 389 transitions. [2023-11-06 22:11:24,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:24,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 389 transitions. [2023-11-06 22:11:24,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:24,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:24,646 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:24,646 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 208 flow. Second operand 5 states and 389 transitions. [2023-11-06 22:11:24,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 53 transitions, 430 flow [2023-11-06 22:11:24,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 53 transitions, 426 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-06 22:11:24,652 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 276 flow [2023-11-06 22:11:24,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-11-06 22:11:24,656 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 19 predicate places. [2023-11-06 22:11:24,656 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 276 flow [2023-11-06 22:11:24,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:24,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:24,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:24,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:11:24,658 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:11:24,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:24,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1533292940, now seen corresponding path program 1 times [2023-11-06 22:11:24,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:24,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536283268] [2023-11-06 22:11:24,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:24,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:24,765 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 22:11:24,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:24,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536283268] [2023-11-06 22:11:24,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536283268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:24,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:24,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:11:24,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503841733] [2023-11-06 22:11:24,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:24,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:11:24,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:24,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:11:24,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:11:24,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-11-06 22:11:24,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:24,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:24,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-11-06 22:11:24,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:24,899 INFO L124 PetriNetUnfolderBase]: 232/400 cut-off events. [2023-11-06 22:11:24,899 INFO L125 PetriNetUnfolderBase]: For 972/972 co-relation queries the response was YES. [2023-11-06 22:11:24,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1491 conditions, 400 events. 232/400 cut-off events. For 972/972 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1510 event pairs, 161 based on Foata normal form. 30/430 useless extension candidates. Maximal degree in co-relation 1465. Up to 400 conditions per place. [2023-11-06 22:11:24,905 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 26 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-11-06 22:11:24,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 27 transitions, 261 flow [2023-11-06 22:11:24,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:24,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2023-11-06 22:11:24,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405458089668616 [2023-11-06 22:11:24,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 226 transitions. [2023-11-06 22:11:24,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 226 transitions. [2023-11-06 22:11:24,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:24,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 226 transitions. [2023-11-06 22:11:24,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:24,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:24,912 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:24,913 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 276 flow. Second operand 3 states and 226 transitions. [2023-11-06 22:11:24,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 27 transitions, 261 flow [2023-11-06 22:11:24,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 27 transitions, 231 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-06 22:11:24,919 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 179 flow [2023-11-06 22:11:24,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2023-11-06 22:11:24,920 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 12 predicate places. [2023-11-06 22:11:24,920 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 179 flow [2023-11-06 22:11:24,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:24,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:24,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:24,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:11:24,922 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:11:24,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:24,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1533292939, now seen corresponding path program 1 times [2023-11-06 22:11:24,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:24,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748707704] [2023-11-06 22:11:24,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:24,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:24,988 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 22:11:24,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:24,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748707704] [2023-11-06 22:11:24,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748707704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:24,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:24,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:11:24,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335630167] [2023-11-06 22:11:24,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:24,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:11:24,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:24,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:11:24,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:11:25,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-11-06 22:11:25,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:25,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:25,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-11-06 22:11:25,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:25,167 INFO L124 PetriNetUnfolderBase]: 252/432 cut-off events. [2023-11-06 22:11:25,167 INFO L125 PetriNetUnfolderBase]: For 554/554 co-relation queries the response was YES. [2023-11-06 22:11:25,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 432 events. 252/432 cut-off events. For 554/554 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1643 event pairs, 47 based on Foata normal form. 18/450 useless extension candidates. Maximal degree in co-relation 1445. Up to 315 conditions per place. [2023-11-06 22:11:25,173 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 38 selfloop transitions, 5 changer transitions 2/45 dead transitions. [2023-11-06 22:11:25,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 336 flow [2023-11-06 22:11:25,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:11:25,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:11:25,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 386 transitions. [2023-11-06 22:11:25,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45146198830409356 [2023-11-06 22:11:25,177 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 386 transitions. [2023-11-06 22:11:25,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 386 transitions. [2023-11-06 22:11:25,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:25,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 386 transitions. [2023-11-06 22:11:25,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:25,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:25,185 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:25,185 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 179 flow. Second operand 5 states and 386 transitions. [2023-11-06 22:11:25,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 336 flow [2023-11-06 22:11:25,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 331 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:25,191 INFO L231 Difference]: Finished difference. Result has 42 places, 28 transitions, 200 flow [2023-11-06 22:11:25,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=42, PETRI_TRANSITIONS=28} [2023-11-06 22:11:25,195 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 17 predicate places. [2023-11-06 22:11:25,195 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 28 transitions, 200 flow [2023-11-06 22:11:25,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:25,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:25,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:25,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:11:25,197 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:11:25,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:25,198 INFO L85 PathProgramCache]: Analyzing trace with hash -287435461, now seen corresponding path program 1 times [2023-11-06 22:11:25,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:25,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331865297] [2023-11-06 22:11:25,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:25,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:25,303 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 22:11:25,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:25,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331865297] [2023-11-06 22:11:25,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331865297] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:11:25,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388678508] [2023-11-06 22:11:25,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:25,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:25,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:25,306 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:25,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:11:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:25,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:11:25,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:25,466 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 22:11:25,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:25,519 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 22:11:25,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388678508] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:25,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:11:25,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:11:25,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495344500] [2023-11-06 22:11:25,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:25,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:11:25,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:25,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:11:25,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:11:25,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-11-06 22:11:25,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 28 transitions, 200 flow. Second operand has 8 states, 8 states have (on average 72.25) internal successors, (578), 8 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:25,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:25,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-11-06 22:11:25,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:25,784 INFO L124 PetriNetUnfolderBase]: 361/622 cut-off events. [2023-11-06 22:11:25,784 INFO L125 PetriNetUnfolderBase]: For 1505/1505 co-relation queries the response was YES. [2023-11-06 22:11:25,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2192 conditions, 622 events. 361/622 cut-off events. For 1505/1505 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2497 event pairs, 41 based on Foata normal form. 90/712 useless extension candidates. Maximal degree in co-relation 2171. Up to 203 conditions per place. [2023-11-06 22:11:25,792 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 44 selfloop transitions, 22 changer transitions 9/75 dead transitions. [2023-11-06 22:11:25,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 75 transitions, 596 flow [2023-11-06 22:11:25,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:11:25,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:11:25,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 693 transitions. [2023-11-06 22:11:25,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2023-11-06 22:11:25,796 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 693 transitions. [2023-11-06 22:11:25,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 693 transitions. [2023-11-06 22:11:25,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:25,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 693 transitions. [2023-11-06 22:11:25,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.0) internal successors, (693), 9 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:25,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:25,806 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:25,806 INFO L175 Difference]: Start difference. First operand has 42 places, 28 transitions, 200 flow. Second operand 9 states and 693 transitions. [2023-11-06 22:11:25,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 75 transitions, 596 flow [2023-11-06 22:11:25,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 75 transitions, 587 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:25,814 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 455 flow [2023-11-06 22:11:25,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=455, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2023-11-06 22:11:25,815 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 31 predicate places. [2023-11-06 22:11:25,815 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 455 flow [2023-11-06 22:11:25,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.25) internal successors, (578), 8 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:25,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:25,816 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:25,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:26,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:11:26,023 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:11:26,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:26,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1351096342, now seen corresponding path program 1 times [2023-11-06 22:11:26,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:26,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165539684] [2023-11-06 22:11:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:26,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:26,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:26,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:26,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165539684] [2023-11-06 22:11:26,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165539684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:11:26,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643426387] [2023-11-06 22:11:26,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:26,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:26,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:26,150 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:26,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:11:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:26,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:11:26,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:26,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:26,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643426387] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:26,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:11:26,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-06 22:11:26,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774611137] [2023-11-06 22:11:26,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:26,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:11:26,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:26,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:11:26,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:11:26,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-11-06 22:11:26,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 455 flow. Second operand has 12 states, 12 states have (on average 71.83333333333333) internal successors, (862), 12 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:26,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:26,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-11-06 22:11:26,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:26,836 INFO L124 PetriNetUnfolderBase]: 481/826 cut-off events. [2023-11-06 22:11:26,836 INFO L125 PetriNetUnfolderBase]: For 4611/4611 co-relation queries the response was YES. [2023-11-06 22:11:26,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3667 conditions, 826 events. 481/826 cut-off events. For 4611/4611 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3298 event pairs, 33 based on Foata normal form. 86/912 useless extension candidates. Maximal degree in co-relation 3638. Up to 299 conditions per place. [2023-11-06 22:11:26,845 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 62 selfloop transitions, 37 changer transitions 18/117 dead transitions. [2023-11-06 22:11:26,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 117 transitions, 1153 flow [2023-11-06 22:11:26,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:11:26,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:11:26,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1073 transitions. [2023-11-06 22:11:26,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44820384294068505 [2023-11-06 22:11:26,853 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1073 transitions. [2023-11-06 22:11:26,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1073 transitions. [2023-11-06 22:11:26,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:26,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1073 transitions. [2023-11-06 22:11:26,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 76.64285714285714) internal successors, (1073), 14 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:26,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 171.0) internal successors, (2565), 15 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:26,866 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 171.0) internal successors, (2565), 15 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:26,867 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 455 flow. Second operand 14 states and 1073 transitions. [2023-11-06 22:11:26,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 117 transitions, 1153 flow [2023-11-06 22:11:26,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 117 transitions, 1058 flow, removed 44 selfloop flow, removed 2 redundant places. [2023-11-06 22:11:26,889 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 737 flow [2023-11-06 22:11:26,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=737, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2023-11-06 22:11:26,891 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 51 predicate places. [2023-11-06 22:11:26,891 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 737 flow [2023-11-06 22:11:26,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 71.83333333333333) internal successors, (862), 12 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:26,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:26,893 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:26,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:27,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:11:27,099 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:11:27,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:27,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2115669955, now seen corresponding path program 2 times [2023-11-06 22:11:27,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:27,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726081378] [2023-11-06 22:11:27,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:27,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:27,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:27,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726081378] [2023-11-06 22:11:27,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726081378] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:11:27,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726835043] [2023-11-06 22:11:27,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:11:27,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:27,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:27,239 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:27,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:11:27,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:11:27,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:11:27,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:11:27,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:27,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:27,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726835043] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:27,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:11:27,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-06 22:11:27,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278857490] [2023-11-06 22:11:27,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:27,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:11:27,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:27,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:11:27,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:11:27,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-11-06 22:11:27,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 737 flow. Second operand has 16 states, 16 states have (on average 71.625) internal successors, (1146), 16 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:27,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:27,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-11-06 22:11:27,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:28,235 INFO L124 PetriNetUnfolderBase]: 761/1306 cut-off events. [2023-11-06 22:11:28,236 INFO L125 PetriNetUnfolderBase]: For 9842/9842 co-relation queries the response was YES. [2023-11-06 22:11:28,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6183 conditions, 1306 events. 761/1306 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5578 event pairs, 57 based on Foata normal form. 68/1374 useless extension candidates. Maximal degree in co-relation 6144. Up to 499 conditions per place. [2023-11-06 22:11:28,251 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 74 selfloop transitions, 67 changer transitions 30/171 dead transitions. [2023-11-06 22:11:28,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 171 transitions, 1941 flow [2023-11-06 22:11:28,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:11:28,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 22:11:28,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1448 transitions. [2023-11-06 22:11:28,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44567559248999694 [2023-11-06 22:11:28,260 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1448 transitions. [2023-11-06 22:11:28,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1448 transitions. [2023-11-06 22:11:28,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:28,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1448 transitions. [2023-11-06 22:11:28,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 76.21052631578948) internal successors, (1448), 19 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:28,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 171.0) internal successors, (3420), 20 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:28,278 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 171.0) internal successors, (3420), 20 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:28,278 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 737 flow. Second operand 19 states and 1448 transitions. [2023-11-06 22:11:28,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 171 transitions, 1941 flow [2023-11-06 22:11:28,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 171 transitions, 1882 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-11-06 22:11:28,339 INFO L231 Difference]: Finished difference. Result has 101 places, 105 transitions, 1409 flow [2023-11-06 22:11:28,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1409, PETRI_PLACES=101, PETRI_TRANSITIONS=105} [2023-11-06 22:11:28,340 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 76 predicate places. [2023-11-06 22:11:28,341 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 105 transitions, 1409 flow [2023-11-06 22:11:28,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 71.625) internal successors, (1146), 16 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:28,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:28,342 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:28,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:28,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:11:28,549 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:11:28,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:28,550 INFO L85 PathProgramCache]: Analyzing trace with hash -901564710, now seen corresponding path program 2 times [2023-11-06 22:11:28,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:28,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242333796] [2023-11-06 22:11:28,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:28,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:28,856 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:28,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:28,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242333796] [2023-11-06 22:11:28,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242333796] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:11:28,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938069247] [2023-11-06 22:11:28,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:11:28,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:28,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:28,870 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:28,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:11:29,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:11:29,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:11:29,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:11:29,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:29,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:29,390 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:29,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938069247] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:29,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:11:29,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2023-11-06 22:11:29,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768329846] [2023-11-06 22:11:29,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:29,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 22:11:29,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:29,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 22:11:29,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:11:29,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-11-06 22:11:29,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 105 transitions, 1409 flow. Second operand has 28 states, 28 states have (on average 71.35714285714286) internal successors, (1998), 28 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:29,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:29,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-11-06 22:11:29,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:31,208 INFO L124 PetriNetUnfolderBase]: 1429/2466 cut-off events. [2023-11-06 22:11:31,209 INFO L125 PetriNetUnfolderBase]: For 30251/30251 co-relation queries the response was YES. [2023-11-06 22:11:31,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12638 conditions, 2466 events. 1429/2466 cut-off events. For 30251/30251 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11081 event pairs, 67 based on Foata normal form. 156/2622 useless extension candidates. Maximal degree in co-relation 12588. Up to 991 conditions per place. [2023-11-06 22:11:31,247 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 132 selfloop transitions, 131 changer transitions 58/321 dead transitions. [2023-11-06 22:11:31,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 321 transitions, 3979 flow [2023-11-06 22:11:31,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-06 22:11:31,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-06 22:11:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2594 transitions. [2023-11-06 22:11:31,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461644306845545 [2023-11-06 22:11:31,262 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2594 transitions. [2023-11-06 22:11:31,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2594 transitions. [2023-11-06 22:11:31,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:31,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2594 transitions. [2023-11-06 22:11:31,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 76.29411764705883) internal successors, (2594), 34 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:31,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 171.0) internal successors, (5985), 35 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:31,295 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 171.0) internal successors, (5985), 35 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:31,295 INFO L175 Difference]: Start difference. First operand has 101 places, 105 transitions, 1409 flow. Second operand 34 states and 2594 transitions. [2023-11-06 22:11:31,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 321 transitions, 3979 flow [2023-11-06 22:11:31,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 321 transitions, 3904 flow, removed 32 selfloop flow, removed 3 redundant places. [2023-11-06 22:11:31,471 INFO L231 Difference]: Finished difference. Result has 152 places, 189 transitions, 3053 flow [2023-11-06 22:11:31,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1368, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3053, PETRI_PLACES=152, PETRI_TRANSITIONS=189} [2023-11-06 22:11:31,472 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 127 predicate places. [2023-11-06 22:11:31,472 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 189 transitions, 3053 flow [2023-11-06 22:11:31,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 71.35714285714286) internal successors, (1998), 28 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:31,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:31,474 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:31,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:31,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:11:31,681 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:11:31,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:31,682 INFO L85 PathProgramCache]: Analyzing trace with hash -474263069, now seen corresponding path program 3 times [2023-11-06 22:11:31,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:31,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855052664] [2023-11-06 22:11:31,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:31,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:32,541 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:32,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:32,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855052664] [2023-11-06 22:11:32,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855052664] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:11:32,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086986641] [2023-11-06 22:11:32,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:11:32,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:32,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:32,543 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:32,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:11:32,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-11-06 22:11:32,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:11:32,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:11:32,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:32,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:33,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086986641] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:33,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:11:33,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2023-11-06 22:11:33,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294458663] [2023-11-06 22:11:33,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:33,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-06 22:11:33,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:33,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-06 22:11:33,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1656, Unknown=0, NotChecked=0, Total=2256 [2023-11-06 22:11:33,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-11-06 22:11:33,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 189 transitions, 3053 flow. Second operand has 48 states, 48 states have (on average 71.20833333333333) internal successors, (3418), 48 states have internal predecessors, (3418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:33,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:33,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-11-06 22:11:33,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:38,442 INFO L124 PetriNetUnfolderBase]: 2885/5042 cut-off events. [2023-11-06 22:11:38,442 INFO L125 PetriNetUnfolderBase]: For 110966/110966 co-relation queries the response was YES. [2023-11-06 22:11:38,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27492 conditions, 5042 events. 2885/5042 cut-off events. For 110966/110966 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 24556 event pairs, 121 based on Foata normal form. 292/5334 useless extension candidates. Maximal degree in co-relation 27420. Up to 2111 conditions per place. [2023-11-06 22:11:38,515 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 206 selfloop transitions, 291 changer transitions 110/607 dead transitions. [2023-11-06 22:11:38,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 607 transitions, 8834 flow [2023-11-06 22:11:38,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-06 22:11:38,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-11-06 22:11:38,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 4496 transitions. [2023-11-06 22:11:38,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4456338586579443 [2023-11-06 22:11:38,529 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 4496 transitions. [2023-11-06 22:11:38,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 4496 transitions. [2023-11-06 22:11:38,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:38,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 4496 transitions. [2023-11-06 22:11:38,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 76.20338983050847) internal successors, (4496), 59 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:38,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 171.0) internal successors, (10260), 60 states have internal predecessors, (10260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:38,597 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 171.0) internal successors, (10260), 60 states have internal predecessors, (10260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:38,597 INFO L175 Difference]: Start difference. First operand has 152 places, 189 transitions, 3053 flow. Second operand 59 states and 4496 transitions. [2023-11-06 22:11:38,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 607 transitions, 8834 flow [2023-11-06 22:11:39,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 607 transitions, 8742 flow, removed 32 selfloop flow, removed 7 redundant places. [2023-11-06 22:11:39,350 INFO L231 Difference]: Finished difference. Result has 238 places, 376 transitions, 7136 flow [2023-11-06 22:11:39,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=2989, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=7136, PETRI_PLACES=238, PETRI_TRANSITIONS=376} [2023-11-06 22:11:39,352 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 213 predicate places. [2023-11-06 22:11:39,352 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 376 transitions, 7136 flow [2023-11-06 22:11:39,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 71.20833333333333) internal successors, (3418), 48 states have internal predecessors, (3418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:39,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:39,354 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:39,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:39,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:11:39,562 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:11:39,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:39,563 INFO L85 PathProgramCache]: Analyzing trace with hash -57339238, now seen corresponding path program 3 times [2023-11-06 22:11:39,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:39,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60253683] [2023-11-06 22:11:39,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:39,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:41,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:41,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60253683] [2023-11-06 22:11:41,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60253683] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:11:41,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601833226] [2023-11-06 22:11:41,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:11:41,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:41,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:41,887 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:41,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:11:42,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2023-11-06 22:11:42,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:11:42,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:11:42,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:43,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:43,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601833226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:43,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:11:43,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [45] total 69 [2023-11-06 22:11:43,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100506897] [2023-11-06 22:11:43,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:43,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:11:43,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:43,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:11:43,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=850, Invalid=3842, Unknown=0, NotChecked=0, Total=4692 [2023-11-06 22:11:43,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 171 [2023-11-06 22:11:43,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 376 transitions, 7136 flow. Second operand has 24 states, 24 states have (on average 71.125) internal successors, (1707), 24 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:43,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:43,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 171 [2023-11-06 22:11:43,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:56,220 INFO L124 PetriNetUnfolderBase]: 22903/33946 cut-off events. [2023-11-06 22:11:56,220 INFO L125 PetriNetUnfolderBase]: For 238753/238753 co-relation queries the response was YES. [2023-11-06 22:11:56,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196734 conditions, 33946 events. 22903/33946 cut-off events. For 238753/238753 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 197953 event pairs, 582 based on Foata normal form. 950/34896 useless extension candidates. Maximal degree in co-relation 196637. Up to 19193 conditions per place. [2023-11-06 22:11:56,735 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 0 selfloop transitions, 0 changer transitions 4168/4168 dead transitions. [2023-11-06 22:11:56,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 4168 transitions, 81667 flow [2023-11-06 22:11:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 22:11:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-06 22:11:56,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1785 transitions. [2023-11-06 22:11:56,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45385202135774216 [2023-11-06 22:11:56,750 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1785 transitions. [2023-11-06 22:11:56,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1785 transitions. [2023-11-06 22:11:56,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:56,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1785 transitions. [2023-11-06 22:11:56,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 77.6086956521739) internal successors, (1785), 23 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:56,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 171.0) internal successors, (4104), 24 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:56,766 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 171.0) internal successors, (4104), 24 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:56,766 INFO L175 Difference]: Start difference. First operand has 238 places, 376 transitions, 7136 flow. Second operand 23 states and 1785 transitions. [2023-11-06 22:11:56,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 4168 transitions, 81667 flow [2023-11-06 22:12:05,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 4168 transitions, 67473 flow, removed 412 selfloop flow, removed 77 redundant places. [2023-11-06 22:12:05,383 INFO L231 Difference]: Finished difference. Result has 175 places, 0 transitions, 0 flow [2023-11-06 22:12:05,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=5071, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=175, PETRI_TRANSITIONS=0} [2023-11-06 22:12:05,384 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 150 predicate places. [2023-11-06 22:12:05,384 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 0 transitions, 0 flow [2023-11-06 22:12:05,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 71.125) internal successors, (1707), 24 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:05,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-06 22:12:05,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2023-11-06 22:12:05,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-06 22:12:05,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-06 22:12:05,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-06 22:12:05,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-06 22:12:05,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-06 22:12:05,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-06 22:12:05,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-11-06 22:12:05,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-11-06 22:12:05,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-06 22:12:05,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-06 22:12:05,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-06 22:12:05,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-06 22:12:05,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-06 22:12:05,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-06 22:12:05,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-06 22:12:05,395 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-06 22:12:05,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:05,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:12:05,603 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:05,610 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:12:05,610 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:12:05,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:12:05 BasicIcfg [2023-11-06 22:12:05,615 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:12:05,616 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:12:05,616 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:12:05,617 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:12:05,617 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:11:16" (3/4) ... [2023-11-06 22:12:05,619 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:12:05,624 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-11-06 22:12:05,624 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-11-06 22:12:05,630 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-06 22:12:05,630 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 22:12:05,630 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:12:05,631 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:12:05,700 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:12:05,701 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:12:05,701 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:12:05,702 INFO L158 Benchmark]: Toolchain (without parser) took 50148.30ms. Allocated memory was 151.0MB in the beginning and 10.6GB in the end (delta: 10.4GB). Free memory was 103.7MB in the beginning and 9.3GB in the end (delta: -9.2GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-11-06 22:12:05,702 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory is still 68.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:12:05,703 INFO L158 Benchmark]: CACSL2BoogieTranslator took 680.87ms. Allocated memory is still 151.0MB. Free memory was 103.7MB in the beginning and 84.4MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 22:12:05,703 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.34ms. Allocated memory is still 151.0MB. Free memory was 84.4MB in the beginning and 82.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:12:05,704 INFO L158 Benchmark]: Boogie Preprocessor took 58.46ms. Allocated memory is still 151.0MB. Free memory was 82.3MB in the beginning and 80.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:12:05,704 INFO L158 Benchmark]: RCFGBuilder took 575.12ms. Allocated memory is still 151.0MB. Free memory was 80.8MB in the beginning and 119.4MB in the end (delta: -38.6MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2023-11-06 22:12:05,705 INFO L158 Benchmark]: TraceAbstraction took 48658.30ms. Allocated memory was 151.0MB in the beginning and 10.6GB in the end (delta: 10.4GB). Free memory was 118.9MB in the beginning and 9.3GB in the end (delta: -9.2GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-11-06 22:12:05,706 INFO L158 Benchmark]: Witness Printer took 84.84ms. Allocated memory is still 10.6GB. Free memory was 9.3GB in the beginning and 9.3GB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:12:05,712 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory is still 68.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 680.87ms. Allocated memory is still 151.0MB. Free memory was 103.7MB in the beginning and 84.4MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.34ms. Allocated memory is still 151.0MB. Free memory was 84.4MB in the beginning and 82.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.46ms. Allocated memory is still 151.0MB. Free memory was 82.3MB in the beginning and 80.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 575.12ms. Allocated memory is still 151.0MB. Free memory was 80.8MB in the beginning and 119.4MB in the end (delta: -38.6MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. * TraceAbstraction took 48658.30ms. Allocated memory was 151.0MB in the beginning and 10.6GB in the end (delta: 10.4GB). Free memory was 118.9MB in the beginning and 9.3GB in the end (delta: -9.2GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 84.84ms. Allocated memory is still 10.6GB. Free memory was 9.3GB in the beginning and 9.3GB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 84 PlacesBefore, 25 PlacesAfterwards, 83 TransitionsBefore, 21 TransitionsAfterwards, 2448 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 86 TotalNumberOfCompositions, 2543 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2214, independent: 2188, independent conditional: 0, independent unconditional: 2188, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1386, independent: 1375, independent conditional: 0, independent unconditional: 1375, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2214, independent: 813, independent conditional: 0, independent unconditional: 813, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 1386, unknown conditional: 0, unknown unconditional: 1386] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 116 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 48.5s, OverallIterations: 18, TraceHistogramMax: 22, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 34.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3087 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2991 mSDsluCounter, 195 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 176 mSDsCounter, 225 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2478 IncrementalHoareTripleChecker+Invalid, 2703 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 225 mSolverCounterUnsat, 19 mSDtfsCounter, 2478 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 444 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4808 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7136occurred in iteration=17, InterpolantAutomatonStates: 201, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 396 ConstructedInterpolants, 0 QuantifiedInterpolants, 1150 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1434 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 30 InterpolantComputations, 13 PerfectInterpolantSequences, 486/1484 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:12:05,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd14b720-2f05-4d02-a00a-921f6cf832ba/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE