./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_unsafe-11.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_unsafe-11.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b16c68af06359cf155927d2335a825cd179e6a83a999e1ead7a6952268e92c6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:54:58,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:54:58,117 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 03:54:58,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:54:58,122 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:54:58,147 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:54:58,148 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:54:58,148 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:54:58,149 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:54:58,150 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:54:58,150 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:54:58,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:54:58,151 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:54:58,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:54:58,152 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:54:58,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:54:58,154 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:54:58,154 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:54:58,155 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:54:58,155 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:54:58,156 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:54:58,156 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:54:58,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:54:58,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:54:58,158 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 03:54:58,158 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:54:58,158 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:54:58,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:54:58,159 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:54:58,160 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:54:58,160 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:54:58,161 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:54:58,161 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:54:58,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:54:58,162 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:54:58,162 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:54:58,162 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:54:58,162 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:54:58,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:54:58,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:54:58,163 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:54:58,163 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:54:58,163 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:54:58,163 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:54:58,164 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_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b16c68af06359cf155927d2335a825cd179e6a83a999e1ead7a6952268e92c6 [2023-11-29 03:54:58,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:54:58,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:54:58,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:54:58,441 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:54:58,442 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:54:58,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/fib_unsafe-11.i [2023-11-29 03:55:01,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:55:01,438 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:55:01,439 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/sv-benchmarks/c/pthread/fib_unsafe-11.i [2023-11-29 03:55:01,454 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/data/d6fd09014/0378f2a3b52b4beb93f0f2d3e6abd96b/FLAG97f6877c8 [2023-11-29 03:55:01,469 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/data/d6fd09014/0378f2a3b52b4beb93f0f2d3e6abd96b [2023-11-29 03:55:01,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:55:01,472 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:55:01,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:55:01,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:55:01,492 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:55:01,492 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:55:01" (1/1) ... [2023-11-29 03:55:01,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e72a534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:01, skipping insertion in model container [2023-11-29 03:55:01,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:55:01" (1/1) ... [2023-11-29 03:55:01,546 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:55:01,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:55:01,865 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:55:01,904 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:55:01,933 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:55:01,933 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:55:01,942 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:55:01,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:01 WrapperNode [2023-11-29 03:55:01,942 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:55:01,943 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:55:01,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:55:01,944 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:55:01,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:01" (1/1) ... [2023-11-29 03:55:01,966 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:01" (1/1) ... [2023-11-29 03:55:01,991 INFO L138 Inliner]: procedures = 165, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 81 [2023-11-29 03:55:01,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:55:01,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:55:01,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:55:01,993 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:55:02,005 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:01" (1/1) ... [2023-11-29 03:55:02,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:01" (1/1) ... [2023-11-29 03:55:02,009 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:01" (1/1) ... [2023-11-29 03:55:02,023 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 03:55:02,023 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:01" (1/1) ... [2023-11-29 03:55:02,023 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:01" (1/1) ... [2023-11-29 03:55:02,028 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:01" (1/1) ... [2023-11-29 03:55:02,031 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:01" (1/1) ... [2023-11-29 03:55:02,033 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:01" (1/1) ... [2023-11-29 03:55:02,035 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:01" (1/1) ... [2023-11-29 03:55:02,039 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:55:02,040 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:55:02,040 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:55:02,040 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:55:02,041 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:01" (1/1) ... [2023-11-29 03:55:02,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:55:02,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:02,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:55:02,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:55:02,103 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-29 03:55:02,103 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-29 03:55:02,103 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-29 03:55:02,104 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-29 03:55:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:55:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:55:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:55:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 03:55:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:55:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:55:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:55:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:55:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:55:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:55:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 03:55:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:55:02,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:55:02,109 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 03:55:02,243 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:55:02,245 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:55:02,427 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:55:02,555 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:55:02,556 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 03:55:02,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:55:02 BoogieIcfgContainer [2023-11-29 03:55:02,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:55:02,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:55:02,560 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:55:02,563 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:55:02,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:55:01" (1/3) ... [2023-11-29 03:55:02,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f0933e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:55:02, skipping insertion in model container [2023-11-29 03:55:02,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:01" (2/3) ... [2023-11-29 03:55:02,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f0933e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:55:02, skipping insertion in model container [2023-11-29 03:55:02,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:55:02" (3/3) ... [2023-11-29 03:55:02,566 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-11.i [2023-11-29 03:55:02,574 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 03:55:02,583 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:55:02,583 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-29 03:55:02,583 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 03:55:02,639 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 03:55:02,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2023-11-29 03:55:02,706 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2023-11-29 03:55:02,706 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:55:02,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 42 events. 3/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 117 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-11-29 03:55:02,711 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2023-11-29 03:55:02,715 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 90 flow [2023-11-29 03:55:02,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:55:02,730 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3bb45832, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:55:02,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-29 03:55:02,737 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:55:02,737 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-29 03:55:02,737 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:55:02,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:02,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:02,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:02,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:02,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2124757497, now seen corresponding path program 1 times [2023-11-29 03:55:02,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:02,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746129695] [2023-11-29 03:55:02,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:02,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:03,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:03,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:03,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746129695] [2023-11-29 03:55:03,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746129695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:03,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:03,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:55:03,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676072170] [2023-11-29 03:55:03,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:03,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:55:03,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:03,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:55:03,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:55:03,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 03:55:03,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:03,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:03,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 03:55:03,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:03,409 INFO L124 PetriNetUnfolderBase]: 657/1292 cut-off events. [2023-11-29 03:55:03,409 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 03:55:03,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2311 conditions, 1292 events. 657/1292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8040 event pairs, 156 based on Foata normal form. 0/989 useless extension candidates. Maximal degree in co-relation 2295. Up to 514 conditions per place. [2023-11-29 03:55:03,430 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 46 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2023-11-29 03:55:03,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 249 flow [2023-11-29 03:55:03,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:55:03,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:55:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2023-11-29 03:55:03,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2023-11-29 03:55:03,445 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 135 transitions. [2023-11-29 03:55:03,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 135 transitions. [2023-11-29 03:55:03,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:03,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 135 transitions. [2023-11-29 03:55:03,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:03,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 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) [2023-11-29 03:55:03,457 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 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) [2023-11-29 03:55:03,459 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 90 flow. Second operand 4 states and 135 transitions. [2023-11-29 03:55:03,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 249 flow [2023-11-29 03:55:03,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:55:03,467 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2023-11-29 03:55:03,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-11-29 03:55:03,474 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2023-11-29 03:55:03,474 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2023-11-29 03:55:03,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:03,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:03,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:03,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:55:03,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:03,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:03,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1782477494, now seen corresponding path program 1 times [2023-11-29 03:55:03,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:03,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128195902] [2023-11-29 03:55:03,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:03,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:03,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:03,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:03,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128195902] [2023-11-29 03:55:03,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128195902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:03,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:03,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:55:03,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028024572] [2023-11-29 03:55:03,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:03,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:55:03,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:03,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:55:03,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:55:03,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 03:55:03,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:03,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:03,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 03:55:03,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:03,889 INFO L124 PetriNetUnfolderBase]: 885/1598 cut-off events. [2023-11-29 03:55:03,889 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2023-11-29 03:55:03,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3406 conditions, 1598 events. 885/1598 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9953 event pairs, 213 based on Foata normal form. 74/1372 useless extension candidates. Maximal degree in co-relation 3390. Up to 785 conditions per place. [2023-11-29 03:55:03,906 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 55 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-11-29 03:55:03,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 75 transitions, 315 flow [2023-11-29 03:55:03,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:55:03,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:55:03,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2023-11-29 03:55:03,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2023-11-29 03:55:03,908 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 135 transitions. [2023-11-29 03:55:03,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 135 transitions. [2023-11-29 03:55:03,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:03,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 135 transitions. [2023-11-29 03:55:03,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:03,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 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) [2023-11-29 03:55:03,912 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 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) [2023-11-29 03:55:03,912 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 4 states and 135 transitions. [2023-11-29 03:55:03,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 75 transitions, 315 flow [2023-11-29 03:55:03,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 315 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 03:55:03,917 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 143 flow [2023-11-29 03:55:03,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2023-11-29 03:55:03,918 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2023-11-29 03:55:03,918 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 143 flow [2023-11-29 03:55:03,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:03,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:03,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:03,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:55:03,919 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:03,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:03,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1804922460, now seen corresponding path program 1 times [2023-11-29 03:55:03,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:03,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840914775] [2023-11-29 03:55:03,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:03,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:04,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:04,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:04,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840914775] [2023-11-29 03:55:04,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840914775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:04,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:04,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:55:04,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874227906] [2023-11-29 03:55:04,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:04,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:55:04,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:04,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:55:04,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:55:04,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2023-11-29 03:55:04,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:04,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:04,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2023-11-29 03:55:04,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:04,340 INFO L124 PetriNetUnfolderBase]: 1133/2347 cut-off events. [2023-11-29 03:55:04,340 INFO L125 PetriNetUnfolderBase]: For 492/649 co-relation queries the response was YES. [2023-11-29 03:55:04,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4980 conditions, 2347 events. 1133/2347 cut-off events. For 492/649 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 17404 event pairs, 365 based on Foata normal form. 106/2046 useless extension candidates. Maximal degree in co-relation 4960. Up to 993 conditions per place. [2023-11-29 03:55:04,393 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-11-29 03:55:04,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 66 transitions, 300 flow [2023-11-29 03:55:04,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:55:04,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:55:04,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2023-11-29 03:55:04,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2023-11-29 03:55:04,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 102 transitions. [2023-11-29 03:55:04,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 102 transitions. [2023-11-29 03:55:04,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:04,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 102 transitions. [2023-11-29 03:55:04,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:04,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:04,401 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:04,401 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 143 flow. Second operand 3 states and 102 transitions. [2023-11-29 03:55:04,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 66 transitions, 300 flow [2023-11-29 03:55:04,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:55:04,405 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 153 flow [2023-11-29 03:55:04,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2023-11-29 03:55:04,406 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2023-11-29 03:55:04,406 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 153 flow [2023-11-29 03:55:04,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:04,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:04,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:04,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:55:04,407 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:04,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:04,408 INFO L85 PathProgramCache]: Analyzing trace with hash -118021125, now seen corresponding path program 1 times [2023-11-29 03:55:04,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:04,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896756012] [2023-11-29 03:55:04,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:04,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:04,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:04,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896756012] [2023-11-29 03:55:04,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896756012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:04,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:04,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:55:04,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481685551] [2023-11-29 03:55:04,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:04,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:55:04,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:04,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:55:04,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:55:04,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2023-11-29 03:55:04,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:04,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:04,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2023-11-29 03:55:04,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:04,802 INFO L124 PetriNetUnfolderBase]: 1133/2310 cut-off events. [2023-11-29 03:55:04,803 INFO L125 PetriNetUnfolderBase]: For 616/773 co-relation queries the response was YES. [2023-11-29 03:55:04,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5137 conditions, 2310 events. 1133/2310 cut-off events. For 616/773 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 16873 event pairs, 365 based on Foata normal form. 92/1995 useless extension candidates. Maximal degree in co-relation 5115. Up to 993 conditions per place. [2023-11-29 03:55:04,824 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-11-29 03:55:04,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 307 flow [2023-11-29 03:55:04,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:55:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:55:04,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2023-11-29 03:55:04,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2023-11-29 03:55:04,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 102 transitions. [2023-11-29 03:55:04,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 102 transitions. [2023-11-29 03:55:04,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:04,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 102 transitions. [2023-11-29 03:55:04,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:04,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:04,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:04,829 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 153 flow. Second operand 3 states and 102 transitions. [2023-11-29 03:55:04,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 307 flow [2023-11-29 03:55:04,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:55:04,832 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 159 flow [2023-11-29 03:55:04,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2023-11-29 03:55:04,833 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2023-11-29 03:55:04,833 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 159 flow [2023-11-29 03:55:04,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:04,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:04,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:04,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:55:04,834 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:04,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:04,835 INFO L85 PathProgramCache]: Analyzing trace with hash 653903621, now seen corresponding path program 1 times [2023-11-29 03:55:04,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:04,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28189770] [2023-11-29 03:55:04,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:04,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:04,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:04,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:04,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28189770] [2023-11-29 03:55:04,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28189770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:04,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:04,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:55:04,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542045468] [2023-11-29 03:55:04,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:04,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:55:04,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:04,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:55:04,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:55:04,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 03:55:04,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:04,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:04,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 03:55:04,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:05,338 INFO L124 PetriNetUnfolderBase]: 2065/3705 cut-off events. [2023-11-29 03:55:05,339 INFO L125 PetriNetUnfolderBase]: For 1351/1765 co-relation queries the response was YES. [2023-11-29 03:55:05,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8799 conditions, 3705 events. 2065/3705 cut-off events. For 1351/1765 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 26312 event pairs, 457 based on Foata normal form. 255/3366 useless extension candidates. Maximal degree in co-relation 8775. Up to 2001 conditions per place. [2023-11-29 03:55:05,374 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 60 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2023-11-29 03:55:05,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 399 flow [2023-11-29 03:55:05,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:55:05,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:55:05,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2023-11-29 03:55:05,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7443181818181818 [2023-11-29 03:55:05,376 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 131 transitions. [2023-11-29 03:55:05,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 131 transitions. [2023-11-29 03:55:05,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:05,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 131 transitions. [2023-11-29 03:55:05,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:05,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 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) [2023-11-29 03:55:05,379 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 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) [2023-11-29 03:55:05,379 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 159 flow. Second operand 4 states and 131 transitions. [2023-11-29 03:55:05,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 399 flow [2023-11-29 03:55:05,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:55:05,383 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 179 flow [2023-11-29 03:55:05,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2023-11-29 03:55:05,384 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2023-11-29 03:55:05,384 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 179 flow [2023-11-29 03:55:05,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:05,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:05,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:05,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:55:05,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:05,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:05,386 INFO L85 PathProgramCache]: Analyzing trace with hash 636312731, now seen corresponding path program 1 times [2023-11-29 03:55:05,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:05,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718910125] [2023-11-29 03:55:05,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:05,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:05,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:05,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718910125] [2023-11-29 03:55:05,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718910125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:05,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:05,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:55:05,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297825697] [2023-11-29 03:55:05,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:05,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:55:05,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:05,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:55:05,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:55:05,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 03:55:05,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:05,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:05,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 03:55:05,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:05,938 INFO L124 PetriNetUnfolderBase]: 1601/3211 cut-off events. [2023-11-29 03:55:05,938 INFO L125 PetriNetUnfolderBase]: For 1181/1660 co-relation queries the response was YES. [2023-11-29 03:55:05,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7718 conditions, 3211 events. 1601/3211 cut-off events. For 1181/1660 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 24157 event pairs, 227 based on Foata normal form. 337/2957 useless extension candidates. Maximal degree in co-relation 7692. Up to 1673 conditions per place. [2023-11-29 03:55:05,970 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2023-11-29 03:55:05,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 445 flow [2023-11-29 03:55:05,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:55:05,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:55:05,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2023-11-29 03:55:05,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2023-11-29 03:55:05,972 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 133 transitions. [2023-11-29 03:55:05,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 133 transitions. [2023-11-29 03:55:05,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:05,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 133 transitions. [2023-11-29 03:55:05,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:05,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 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) [2023-11-29 03:55:05,974 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 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) [2023-11-29 03:55:05,974 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 179 flow. Second operand 4 states and 133 transitions. [2023-11-29 03:55:05,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 445 flow [2023-11-29 03:55:05,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:55:05,978 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 197 flow [2023-11-29 03:55:05,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2023-11-29 03:55:05,979 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-11-29 03:55:05,979 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 197 flow [2023-11-29 03:55:05,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:05,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:05,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:05,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:55:05,980 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:05,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:05,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1160774394, now seen corresponding path program 1 times [2023-11-29 03:55:05,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:05,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888073397] [2023-11-29 03:55:05,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:05,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:06,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:06,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888073397] [2023-11-29 03:55:06,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888073397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:06,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:06,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:55:06,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022207693] [2023-11-29 03:55:06,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:06,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:55:06,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:06,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:55:06,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:55:06,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 03:55:06,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:06,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:06,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 03:55:06,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:06,448 INFO L124 PetriNetUnfolderBase]: 1121/2194 cut-off events. [2023-11-29 03:55:06,449 INFO L125 PetriNetUnfolderBase]: For 1435/1771 co-relation queries the response was YES. [2023-11-29 03:55:06,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6016 conditions, 2194 events. 1121/2194 cut-off events. For 1435/1771 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14734 event pairs, 160 based on Foata normal form. 49/1932 useless extension candidates. Maximal degree in co-relation 5985. Up to 835 conditions per place. [2023-11-29 03:55:06,466 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2023-11-29 03:55:06,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 499 flow [2023-11-29 03:55:06,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:55:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:55:06,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2023-11-29 03:55:06,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2023-11-29 03:55:06,468 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 161 transitions. [2023-11-29 03:55:06,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 161 transitions. [2023-11-29 03:55:06,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:06,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 161 transitions. [2023-11-29 03:55:06,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:06,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:06,471 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:06,471 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 197 flow. Second operand 5 states and 161 transitions. [2023-11-29 03:55:06,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 499 flow [2023-11-29 03:55:06,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 489 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:55:06,477 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 217 flow [2023-11-29 03:55:06,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2023-11-29 03:55:06,478 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2023-11-29 03:55:06,478 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 217 flow [2023-11-29 03:55:06,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:06,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:06,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:06,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:55:06,479 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:06,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:06,480 INFO L85 PathProgramCache]: Analyzing trace with hash 345865615, now seen corresponding path program 1 times [2023-11-29 03:55:06,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:06,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585424404] [2023-11-29 03:55:06,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:06,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:06,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:06,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:06,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585424404] [2023-11-29 03:55:06,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585424404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:06,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:06,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:55:06,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925213736] [2023-11-29 03:55:06,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:06,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:55:06,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:06,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:55:06,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:55:06,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 03:55:06,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:06,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:06,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 03:55:06,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:06,936 INFO L124 PetriNetUnfolderBase]: 1167/2323 cut-off events. [2023-11-29 03:55:06,937 INFO L125 PetriNetUnfolderBase]: For 1787/2055 co-relation queries the response was YES. [2023-11-29 03:55:06,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6628 conditions, 2323 events. 1167/2323 cut-off events. For 1787/2055 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15992 event pairs, 223 based on Foata normal form. 79/2245 useless extension candidates. Maximal degree in co-relation 6595. Up to 1105 conditions per place. [2023-11-29 03:55:06,954 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2023-11-29 03:55:06,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 520 flow [2023-11-29 03:55:06,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:55:06,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:55:06,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2023-11-29 03:55:06,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2023-11-29 03:55:06,956 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 162 transitions. [2023-11-29 03:55:06,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 162 transitions. [2023-11-29 03:55:06,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:06,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 162 transitions. [2023-11-29 03:55:06,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:06,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:06,959 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:06,959 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 217 flow. Second operand 5 states and 162 transitions. [2023-11-29 03:55:06,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 520 flow [2023-11-29 03:55:06,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 509 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 03:55:06,963 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 242 flow [2023-11-29 03:55:06,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2023-11-29 03:55:06,964 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2023-11-29 03:55:06,964 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 242 flow [2023-11-29 03:55:06,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:06,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:06,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:06,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 03:55:06,965 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:06,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:06,966 INFO L85 PathProgramCache]: Analyzing trace with hash 108763395, now seen corresponding path program 1 times [2023-11-29 03:55:06,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:06,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509356561] [2023-11-29 03:55:06,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:06,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:07,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:07,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509356561] [2023-11-29 03:55:07,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509356561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:07,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:07,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:55:07,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330731662] [2023-11-29 03:55:07,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:07,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:55:07,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:07,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:55:07,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:55:07,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 03:55:07,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:07,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:07,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 03:55:07,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:07,422 INFO L124 PetriNetUnfolderBase]: 1258/2463 cut-off events. [2023-11-29 03:55:07,422 INFO L125 PetriNetUnfolderBase]: For 2561/2850 co-relation queries the response was YES. [2023-11-29 03:55:07,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7423 conditions, 2463 events. 1258/2463 cut-off events. For 2561/2850 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 16974 event pairs, 279 based on Foata normal form. 91/2376 useless extension candidates. Maximal degree in co-relation 7389. Up to 1236 conditions per place. [2023-11-29 03:55:07,442 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 65 selfloop transitions, 9 changer transitions 0/94 dead transitions. [2023-11-29 03:55:07,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 560 flow [2023-11-29 03:55:07,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:55:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:55:07,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2023-11-29 03:55:07,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2023-11-29 03:55:07,444 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 162 transitions. [2023-11-29 03:55:07,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 162 transitions. [2023-11-29 03:55:07,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:07,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 162 transitions. [2023-11-29 03:55:07,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:07,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:07,446 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:07,446 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 242 flow. Second operand 5 states and 162 transitions. [2023-11-29 03:55:07,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 560 flow [2023-11-29 03:55:07,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 94 transitions, 543 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-29 03:55:07,451 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 288 flow [2023-11-29 03:55:07,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=288, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2023-11-29 03:55:07,452 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2023-11-29 03:55:07,452 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 288 flow [2023-11-29 03:55:07,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:07,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:07,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:07,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 03:55:07,453 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:07,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:07,453 INFO L85 PathProgramCache]: Analyzing trace with hash 108763394, now seen corresponding path program 1 times [2023-11-29 03:55:07,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:07,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132466495] [2023-11-29 03:55:07,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:07,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:07,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:07,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132466495] [2023-11-29 03:55:07,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132466495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:07,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:07,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:55:07,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514880944] [2023-11-29 03:55:07,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:07,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:55:07,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:07,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:55:07,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:55:07,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 03:55:07,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:07,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:07,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 03:55:07,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:07,848 INFO L124 PetriNetUnfolderBase]: 1083/2162 cut-off events. [2023-11-29 03:55:07,848 INFO L125 PetriNetUnfolderBase]: For 3503/3753 co-relation queries the response was YES. [2023-11-29 03:55:07,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6783 conditions, 2162 events. 1083/2162 cut-off events. For 3503/3753 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14637 event pairs, 258 based on Foata normal form. 126/2208 useless extension candidates. Maximal degree in co-relation 6746. Up to 1229 conditions per place. [2023-11-29 03:55:07,868 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 54 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2023-11-29 03:55:07,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 80 transitions, 490 flow [2023-11-29 03:55:07,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:55:07,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:55:07,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2023-11-29 03:55:07,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6727272727272727 [2023-11-29 03:55:07,870 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 148 transitions. [2023-11-29 03:55:07,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 148 transitions. [2023-11-29 03:55:07,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:07,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 148 transitions. [2023-11-29 03:55:07,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:07,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:07,873 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:07,873 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 288 flow. Second operand 5 states and 148 transitions. [2023-11-29 03:55:07,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 80 transitions, 490 flow [2023-11-29 03:55:07,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 474 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-29 03:55:07,881 INFO L231 Difference]: Finished difference. Result has 74 places, 56 transitions, 271 flow [2023-11-29 03:55:07,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=74, PETRI_TRANSITIONS=56} [2023-11-29 03:55:07,882 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2023-11-29 03:55:07,882 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 56 transitions, 271 flow [2023-11-29 03:55:07,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:07,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:07,883 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:07,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 03:55:07,883 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:07,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:07,884 INFO L85 PathProgramCache]: Analyzing trace with hash 124818474, now seen corresponding path program 1 times [2023-11-29 03:55:07,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:07,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228929440] [2023-11-29 03:55:07,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:07,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:07,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:07,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:07,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228929440] [2023-11-29 03:55:07,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228929440] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:55:07,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391191070] [2023-11-29 03:55:07,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:07,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:07,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:07,972 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:07,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:55:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:08,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:55:08,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:08,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:08,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:08,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391191070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:08,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:55:08,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 03:55:08,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421695786] [2023-11-29 03:55:08,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:08,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:55:08,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:08,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:55:08,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:55:08,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 03:55:08,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 56 transitions, 271 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:08,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:08,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 03:55:08,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:08,541 INFO L124 PetriNetUnfolderBase]: 1453/2648 cut-off events. [2023-11-29 03:55:08,541 INFO L125 PetriNetUnfolderBase]: For 4578/4994 co-relation queries the response was YES. [2023-11-29 03:55:08,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8520 conditions, 2648 events. 1453/2648 cut-off events. For 4578/4994 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 17601 event pairs, 311 based on Foata normal form. 134/2677 useless extension candidates. Maximal degree in co-relation 8484. Up to 1048 conditions per place. [2023-11-29 03:55:08,560 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 84 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2023-11-29 03:55:08,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 107 transitions, 695 flow [2023-11-29 03:55:08,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:55:08,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:55:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2023-11-29 03:55:08,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2023-11-29 03:55:08,562 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 182 transitions. [2023-11-29 03:55:08,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 182 transitions. [2023-11-29 03:55:08,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:08,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 182 transitions. [2023-11-29 03:55:08,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:08,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:08,565 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:08,565 INFO L175 Difference]: Start difference. First operand has 74 places, 56 transitions, 271 flow. Second operand 6 states and 182 transitions. [2023-11-29 03:55:08,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 107 transitions, 695 flow [2023-11-29 03:55:08,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 107 transitions, 686 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 03:55:08,573 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 268 flow [2023-11-29 03:55:08,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2023-11-29 03:55:08,574 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 29 predicate places. [2023-11-29 03:55:08,574 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 268 flow [2023-11-29 03:55:08,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:08,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:08,575 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:08,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:55:08,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:08,776 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:08,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:08,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1592783038, now seen corresponding path program 1 times [2023-11-29 03:55:08,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:08,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905530402] [2023-11-29 03:55:08,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:08,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:08,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:08,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:08,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905530402] [2023-11-29 03:55:08,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905530402] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:55:08,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526536091] [2023-11-29 03:55:08,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:08,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:08,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:08,857 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:08,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:55:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:08,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:55:08,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:09,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:09,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526536091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:09,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:55:09,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-29 03:55:09,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949037551] [2023-11-29 03:55:09,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:09,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:55:09,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:09,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:55:09,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:55:09,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2023-11-29 03:55:09,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:09,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:09,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2023-11-29 03:55:09,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:09,354 INFO L124 PetriNetUnfolderBase]: 1083/2400 cut-off events. [2023-11-29 03:55:09,354 INFO L125 PetriNetUnfolderBase]: For 4204/4383 co-relation queries the response was YES. [2023-11-29 03:55:09,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7131 conditions, 2400 events. 1083/2400 cut-off events. For 4204/4383 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17853 event pairs, 187 based on Foata normal form. 119/2436 useless extension candidates. Maximal degree in co-relation 7096. Up to 1216 conditions per place. [2023-11-29 03:55:09,373 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 54 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-11-29 03:55:09,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 513 flow [2023-11-29 03:55:09,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:55:09,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:55:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2023-11-29 03:55:09,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2023-11-29 03:55:09,374 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 120 transitions. [2023-11-29 03:55:09,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 120 transitions. [2023-11-29 03:55:09,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:09,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 120 transitions. [2023-11-29 03:55:09,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:09,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 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) [2023-11-29 03:55:09,376 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 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) [2023-11-29 03:55:09,377 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 268 flow. Second operand 4 states and 120 transitions. [2023-11-29 03:55:09,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 513 flow [2023-11-29 03:55:09,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 76 transitions, 507 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 03:55:09,384 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 263 flow [2023-11-29 03:55:09,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2023-11-29 03:55:09,385 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2023-11-29 03:55:09,385 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 263 flow [2023-11-29 03:55:09,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:09,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:09,386 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:09,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:55:09,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:09,592 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:09,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:09,592 INFO L85 PathProgramCache]: Analyzing trace with hash -425594268, now seen corresponding path program 1 times [2023-11-29 03:55:09,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:09,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484277609] [2023-11-29 03:55:09,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:09,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:55:09,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:09,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484277609] [2023-11-29 03:55:09,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484277609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:09,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:09,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:55:09,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868416450] [2023-11-29 03:55:09,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:09,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:55:09,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:09,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:55:09,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:55:09,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-29 03:55:09,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:09,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:09,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-29 03:55:09,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:09,942 INFO L124 PetriNetUnfolderBase]: 1611/2891 cut-off events. [2023-11-29 03:55:09,942 INFO L125 PetriNetUnfolderBase]: For 5103/5472 co-relation queries the response was YES. [2023-11-29 03:55:09,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9388 conditions, 2891 events. 1611/2891 cut-off events. For 5103/5472 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 19056 event pairs, 781 based on Foata normal form. 139/2980 useless extension candidates. Maximal degree in co-relation 9353. Up to 1547 conditions per place. [2023-11-29 03:55:09,960 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 68 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2023-11-29 03:55:09,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 90 transitions, 589 flow [2023-11-29 03:55:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:55:09,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:55:09,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2023-11-29 03:55:09,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2023-11-29 03:55:09,962 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 124 transitions. [2023-11-29 03:55:09,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 124 transitions. [2023-11-29 03:55:09,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:09,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 124 transitions. [2023-11-29 03:55:09,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:09,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 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) [2023-11-29 03:55:09,964 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 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) [2023-11-29 03:55:09,964 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 263 flow. Second operand 4 states and 124 transitions. [2023-11-29 03:55:09,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 90 transitions, 589 flow [2023-11-29 03:55:09,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 90 transitions, 580 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 03:55:09,971 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 272 flow [2023-11-29 03:55:09,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2023-11-29 03:55:09,972 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2023-11-29 03:55:09,972 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 272 flow [2023-11-29 03:55:09,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:09,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:09,973 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:09,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 03:55:09,973 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:09,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:09,973 INFO L85 PathProgramCache]: Analyzing trace with hash -2131633635, now seen corresponding path program 1 times [2023-11-29 03:55:09,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:09,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638267634] [2023-11-29 03:55:09,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:09,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:10,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:10,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638267634] [2023-11-29 03:55:10,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638267634] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:55:10,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690392320] [2023-11-29 03:55:10,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:10,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:10,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:10,041 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:10,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:55:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:10,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:55:10,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:10,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:55:10,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:10,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690392320] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:55:10,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:55:10,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-29 03:55:10,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96380640] [2023-11-29 03:55:10,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:55:10,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:55:10,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:10,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:55:10,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:55:10,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 03:55:10,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 272 flow. Second operand has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:10,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:10,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 03:55:10,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:10,993 INFO L124 PetriNetUnfolderBase]: 2907/6187 cut-off events. [2023-11-29 03:55:10,994 INFO L125 PetriNetUnfolderBase]: For 12171/12623 co-relation queries the response was YES. [2023-11-29 03:55:11,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18283 conditions, 6187 events. 2907/6187 cut-off events. For 12171/12623 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 50823 event pairs, 187 based on Foata normal form. 370/6492 useless extension candidates. Maximal degree in co-relation 18248. Up to 1217 conditions per place. [2023-11-29 03:55:11,029 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 129 selfloop transitions, 5 changer transitions 0/153 dead transitions. [2023-11-29 03:55:11,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 153 transitions, 1134 flow [2023-11-29 03:55:11,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:55:11,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:55:11,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2023-11-29 03:55:11,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7840909090909091 [2023-11-29 03:55:11,031 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 207 transitions. [2023-11-29 03:55:11,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 207 transitions. [2023-11-29 03:55:11,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:11,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 207 transitions. [2023-11-29 03:55:11,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:11,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:11,034 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:11,034 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 272 flow. Second operand 6 states and 207 transitions. [2023-11-29 03:55:11,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 153 transitions, 1134 flow [2023-11-29 03:55:11,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 153 transitions, 1118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:55:11,043 INFO L231 Difference]: Finished difference. Result has 80 places, 57 transitions, 300 flow [2023-11-29 03:55:11,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=80, PETRI_TRANSITIONS=57} [2023-11-29 03:55:11,044 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 34 predicate places. [2023-11-29 03:55:11,044 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 57 transitions, 300 flow [2023-11-29 03:55:11,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:11,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:11,044 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:11,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:55:11,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 03:55:11,249 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:11,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:11,249 INFO L85 PathProgramCache]: Analyzing trace with hash -47291238, now seen corresponding path program 1 times [2023-11-29 03:55:11,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:11,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106741771] [2023-11-29 03:55:11,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:11,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:11,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:11,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106741771] [2023-11-29 03:55:11,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106741771] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:55:11,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894431995] [2023-11-29 03:55:11,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:11,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:11,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:11,321 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:11,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:55:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:11,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:55:11,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:11,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:11,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894431995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:11,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:55:11,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 03:55:11,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629468987] [2023-11-29 03:55:11,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:11,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:55:11,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:11,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:55:11,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:55:11,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 03:55:11,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 57 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:11,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:11,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 03:55:11,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:12,320 INFO L124 PetriNetUnfolderBase]: 3691/6634 cut-off events. [2023-11-29 03:55:12,320 INFO L125 PetriNetUnfolderBase]: For 14336/14750 co-relation queries the response was YES. [2023-11-29 03:55:12,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22157 conditions, 6634 events. 3691/6634 cut-off events. For 14336/14750 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 48625 event pairs, 815 based on Foata normal form. 162/6562 useless extension candidates. Maximal degree in co-relation 22118. Up to 2628 conditions per place. [2023-11-29 03:55:12,358 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 90 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2023-11-29 03:55:12,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 111 transitions, 812 flow [2023-11-29 03:55:12,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:55:12,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:55:12,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2023-11-29 03:55:12,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 03:55:12,360 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 176 transitions. [2023-11-29 03:55:12,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 176 transitions. [2023-11-29 03:55:12,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:12,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 176 transitions. [2023-11-29 03:55:12,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:12,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:12,362 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:12,362 INFO L175 Difference]: Start difference. First operand has 80 places, 57 transitions, 300 flow. Second operand 6 states and 176 transitions. [2023-11-29 03:55:12,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 111 transitions, 812 flow [2023-11-29 03:55:12,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 111 transitions, 770 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-11-29 03:55:12,375 INFO L231 Difference]: Finished difference. Result has 82 places, 56 transitions, 294 flow [2023-11-29 03:55:12,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=82, PETRI_TRANSITIONS=56} [2023-11-29 03:55:12,375 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2023-11-29 03:55:12,375 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 56 transitions, 294 flow [2023-11-29 03:55:12,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:12,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:12,376 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:12,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:55:12,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 03:55:12,576 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:12,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:12,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1656132935, now seen corresponding path program 1 times [2023-11-29 03:55:12,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:12,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107171357] [2023-11-29 03:55:12,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:12,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:12,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:12,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:12,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107171357] [2023-11-29 03:55:12,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107171357] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:55:12,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658142948] [2023-11-29 03:55:12,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:12,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:12,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:12,671 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:12,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:55:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:12,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:55:12,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:12,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:12,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658142948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:12,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:55:12,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-29 03:55:12,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386644167] [2023-11-29 03:55:12,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:12,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:55:12,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:12,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:55:12,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:55:12,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 03:55:12,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 56 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:12,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:12,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 03:55:12,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:13,557 INFO L124 PetriNetUnfolderBase]: 3819/6572 cut-off events. [2023-11-29 03:55:13,557 INFO L125 PetriNetUnfolderBase]: For 15033/15240 co-relation queries the response was YES. [2023-11-29 03:55:13,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22487 conditions, 6572 events. 3819/6572 cut-off events. For 15033/15240 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 45250 event pairs, 1663 based on Foata normal form. 228/6431 useless extension candidates. Maximal degree in co-relation 22448. Up to 3155 conditions per place. [2023-11-29 03:55:13,604 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 53 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2023-11-29 03:55:13,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 77 transitions, 553 flow [2023-11-29 03:55:13,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:55:13,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:55:13,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2023-11-29 03:55:13,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6420454545454546 [2023-11-29 03:55:13,606 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 113 transitions. [2023-11-29 03:55:13,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 113 transitions. [2023-11-29 03:55:13,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:13,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 113 transitions. [2023-11-29 03:55:13,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:13,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 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) [2023-11-29 03:55:13,608 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 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) [2023-11-29 03:55:13,608 INFO L175 Difference]: Start difference. First operand has 82 places, 56 transitions, 294 flow. Second operand 4 states and 113 transitions. [2023-11-29 03:55:13,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 77 transitions, 553 flow [2023-11-29 03:55:13,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 77 transitions, 547 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 03:55:13,626 INFO L231 Difference]: Finished difference. Result has 81 places, 55 transitions, 301 flow [2023-11-29 03:55:13,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=81, PETRI_TRANSITIONS=55} [2023-11-29 03:55:13,626 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2023-11-29 03:55:13,627 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 55 transitions, 301 flow [2023-11-29 03:55:13,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:13,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:13,627 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:13,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:55:13,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 03:55:13,828 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:13,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:13,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1817270937, now seen corresponding path program 1 times [2023-11-29 03:55:13,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:13,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483356862] [2023-11-29 03:55:13,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:13,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:13,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:13,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483356862] [2023-11-29 03:55:13,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483356862] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:55:13,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213383839] [2023-11-29 03:55:13,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:13,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:13,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:13,908 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:13,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:55:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:13,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:55:14,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:14,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:14,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:55:14,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:14,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213383839] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:55:14,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:55:14,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-11-29 03:55:14,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164716009] [2023-11-29 03:55:14,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:55:14,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:55:14,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:14,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:55:14,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:55:14,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 03:55:14,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 55 transitions, 301 flow. Second operand has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:14,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:14,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 03:55:14,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:17,397 INFO L124 PetriNetUnfolderBase]: 11247/21496 cut-off events. [2023-11-29 03:55:17,397 INFO L125 PetriNetUnfolderBase]: For 61176/62265 co-relation queries the response was YES. [2023-11-29 03:55:17,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76622 conditions, 21496 events. 11247/21496 cut-off events. For 61176/62265 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 192015 event pairs, 341 based on Foata normal form. 1442/22881 useless extension candidates. Maximal degree in co-relation 76581. Up to 4201 conditions per place. [2023-11-29 03:55:17,639 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 393 selfloop transitions, 71 changer transitions 0/480 dead transitions. [2023-11-29 03:55:17,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 480 transitions, 3831 flow [2023-11-29 03:55:17,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 03:55:17,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 03:55:17,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 905 transitions. [2023-11-29 03:55:17,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.734577922077922 [2023-11-29 03:55:17,644 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 905 transitions. [2023-11-29 03:55:17,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 905 transitions. [2023-11-29 03:55:17,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:17,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 905 transitions. [2023-11-29 03:55:17,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 32.32142857142857) internal successors, (905), 28 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:17,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 44.0) internal successors, (1276), 29 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:17,653 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 44.0) internal successors, (1276), 29 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:17,653 INFO L175 Difference]: Start difference. First operand has 81 places, 55 transitions, 301 flow. Second operand 28 states and 905 transitions. [2023-11-29 03:55:17,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 480 transitions, 3831 flow [2023-11-29 03:55:17,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 480 transitions, 3479 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 03:55:17,718 INFO L231 Difference]: Finished difference. Result has 121 places, 127 transitions, 1213 flow [2023-11-29 03:55:17,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1213, PETRI_PLACES=121, PETRI_TRANSITIONS=127} [2023-11-29 03:55:17,719 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 75 predicate places. [2023-11-29 03:55:17,719 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 127 transitions, 1213 flow [2023-11-29 03:55:17,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:17,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:17,719 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:17,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:55:17,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 03:55:17,920 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:17,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:17,920 INFO L85 PathProgramCache]: Analyzing trace with hash 872094804, now seen corresponding path program 1 times [2023-11-29 03:55:17,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:17,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306451800] [2023-11-29 03:55:17,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:17,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:17,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:17,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306451800] [2023-11-29 03:55:17,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306451800] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:55:17,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450264332] [2023-11-29 03:55:17,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:17,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:17,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:17,984 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:17,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:55:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:18,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:55:18,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:18,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:18,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450264332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:18,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:55:18,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2023-11-29 03:55:18,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426720073] [2023-11-29 03:55:18,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:18,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:55:18,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:18,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:55:18,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:55:18,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 03:55:18,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 127 transitions, 1213 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:18,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:18,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 03:55:18,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:20,729 INFO L124 PetriNetUnfolderBase]: 9393/18472 cut-off events. [2023-11-29 03:55:20,729 INFO L125 PetriNetUnfolderBase]: For 195866/196888 co-relation queries the response was YES. [2023-11-29 03:55:20,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77821 conditions, 18472 events. 9393/18472 cut-off events. For 195866/196888 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 164975 event pairs, 1631 based on Foata normal form. 1656/19951 useless extension candidates. Maximal degree in co-relation 77762. Up to 6826 conditions per place. [2023-11-29 03:55:20,914 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 88 selfloop transitions, 27 changer transitions 0/131 dead transitions. [2023-11-29 03:55:20,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 131 transitions, 1336 flow [2023-11-29 03:55:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:55:20,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:55:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2023-11-29 03:55:20,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6553030303030303 [2023-11-29 03:55:20,916 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 173 transitions. [2023-11-29 03:55:20,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 173 transitions. [2023-11-29 03:55:20,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:20,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 173 transitions. [2023-11-29 03:55:20,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:20,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:20,918 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:20,918 INFO L175 Difference]: Start difference. First operand has 121 places, 127 transitions, 1213 flow. Second operand 6 states and 173 transitions. [2023-11-29 03:55:20,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 131 transitions, 1336 flow [2023-11-29 03:55:21,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 131 transitions, 1087 flow, removed 99 selfloop flow, removed 13 redundant places. [2023-11-29 03:55:21,793 INFO L231 Difference]: Finished difference. Result has 109 places, 95 transitions, 682 flow [2023-11-29 03:55:21,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=682, PETRI_PLACES=109, PETRI_TRANSITIONS=95} [2023-11-29 03:55:21,794 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2023-11-29 03:55:21,794 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 95 transitions, 682 flow [2023-11-29 03:55:21,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:21,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:21,794 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:21,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:55:21,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 03:55:21,995 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:21,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:21,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1466028033, now seen corresponding path program 1 times [2023-11-29 03:55:21,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:21,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385488169] [2023-11-29 03:55:21,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:21,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:55:22,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:22,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385488169] [2023-11-29 03:55:22,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385488169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:22,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:22,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:55:22,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152012865] [2023-11-29 03:55:22,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:22,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:55:22,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:22,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:55:22,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:55:22,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-29 03:55:22,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 95 transitions, 682 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:22,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:22,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-29 03:55:22,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:25,274 INFO L124 PetriNetUnfolderBase]: 14883/25342 cut-off events. [2023-11-29 03:55:25,275 INFO L125 PetriNetUnfolderBase]: For 158181/159246 co-relation queries the response was YES. [2023-11-29 03:55:25,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98669 conditions, 25342 events. 14883/25342 cut-off events. For 158181/159246 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 210728 event pairs, 5592 based on Foata normal form. 864/25540 useless extension candidates. Maximal degree in co-relation 98618. Up to 11443 conditions per place. [2023-11-29 03:55:25,576 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 145 selfloop transitions, 6 changer transitions 0/165 dead transitions. [2023-11-29 03:55:25,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 165 transitions, 1486 flow [2023-11-29 03:55:25,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:55:25,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:55:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2023-11-29 03:55:25,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2023-11-29 03:55:25,578 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 116 transitions. [2023-11-29 03:55:25,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 116 transitions. [2023-11-29 03:55:25,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:25,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 116 transitions. [2023-11-29 03:55:25,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:25,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 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) [2023-11-29 03:55:25,580 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 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) [2023-11-29 03:55:25,580 INFO L175 Difference]: Start difference. First operand has 109 places, 95 transitions, 682 flow. Second operand 4 states and 116 transitions. [2023-11-29 03:55:25,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 165 transitions, 1486 flow [2023-11-29 03:55:25,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 165 transitions, 1457 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-29 03:55:25,957 INFO L231 Difference]: Finished difference. Result has 108 places, 95 transitions, 681 flow [2023-11-29 03:55:25,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=681, PETRI_PLACES=108, PETRI_TRANSITIONS=95} [2023-11-29 03:55:25,958 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2023-11-29 03:55:25,958 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 95 transitions, 681 flow [2023-11-29 03:55:25,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:25,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:25,958 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:25,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 03:55:25,958 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:25,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:25,959 INFO L85 PathProgramCache]: Analyzing trace with hash 199486861, now seen corresponding path program 1 times [2023-11-29 03:55:25,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:25,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426788328] [2023-11-29 03:55:25,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:25,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:55:25,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:25,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426788328] [2023-11-29 03:55:25,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426788328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:26,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:26,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:55:26,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224139958] [2023-11-29 03:55:26,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:26,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:55:26,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:26,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:55:26,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:55:26,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 03:55:26,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 95 transitions, 681 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:26,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:26,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 03:55:26,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:28,843 INFO L124 PetriNetUnfolderBase]: 11993/21452 cut-off events. [2023-11-29 03:55:28,843 INFO L125 PetriNetUnfolderBase]: For 186734/186734 co-relation queries the response was YES. [2023-11-29 03:55:28,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85452 conditions, 21452 events. 11993/21452 cut-off events. For 186734/186734 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 180412 event pairs, 2570 based on Foata normal form. 0/21083 useless extension candidates. Maximal degree in co-relation 85402. Up to 9373 conditions per place. [2023-11-29 03:55:29,016 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 194 selfloop transitions, 9 changer transitions 0/219 dead transitions. [2023-11-29 03:55:29,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 219 transitions, 2147 flow [2023-11-29 03:55:29,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:55:29,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:55:29,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2023-11-29 03:55:29,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761363636363636 [2023-11-29 03:55:29,017 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 119 transitions. [2023-11-29 03:55:29,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 119 transitions. [2023-11-29 03:55:29,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:29,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 119 transitions. [2023-11-29 03:55:29,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:29,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 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) [2023-11-29 03:55:29,019 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 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) [2023-11-29 03:55:29,019 INFO L175 Difference]: Start difference. First operand has 108 places, 95 transitions, 681 flow. Second operand 4 states and 119 transitions. [2023-11-29 03:55:29,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 219 transitions, 2147 flow [2023-11-29 03:55:29,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 219 transitions, 2135 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:55:29,218 INFO L231 Difference]: Finished difference. Result has 109 places, 95 transitions, 695 flow [2023-11-29 03:55:29,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=695, PETRI_PLACES=109, PETRI_TRANSITIONS=95} [2023-11-29 03:55:29,218 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2023-11-29 03:55:29,218 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 95 transitions, 695 flow [2023-11-29 03:55:29,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:29,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:29,219 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:29,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 03:55:29,219 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:29,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:29,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1835742971, now seen corresponding path program 1 times [2023-11-29 03:55:29,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:29,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451404817] [2023-11-29 03:55:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:29,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:29,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:29,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451404817] [2023-11-29 03:55:29,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451404817] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:55:29,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411224604] [2023-11-29 03:55:29,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:29,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:29,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:29,301 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:29,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:55:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:29,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:55:29,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:29,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:55:29,653 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:29,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411224604] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:55:29,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:55:29,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-29 03:55:29,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741763565] [2023-11-29 03:55:29,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:55:29,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 03:55:29,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:29,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 03:55:29,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:55:29,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 03:55:29,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 95 transitions, 695 flow. Second operand has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:29,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:29,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 03:55:29,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:33,621 INFO L124 PetriNetUnfolderBase]: 13285/25710 cut-off events. [2023-11-29 03:55:33,621 INFO L125 PetriNetUnfolderBase]: For 259938/259938 co-relation queries the response was YES. [2023-11-29 03:55:33,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105653 conditions, 25710 events. 13285/25710 cut-off events. For 259938/259938 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 235901 event pairs, 539 based on Foata normal form. 908/26435 useless extension candidates. Maximal degree in co-relation 105599. Up to 7399 conditions per place. [2023-11-29 03:55:33,862 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 304 selfloop transitions, 54 changer transitions 0/374 dead transitions. [2023-11-29 03:55:33,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 374 transitions, 3182 flow [2023-11-29 03:55:33,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 03:55:33,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 03:55:33,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 652 transitions. [2023-11-29 03:55:33,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7056277056277056 [2023-11-29 03:55:33,866 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 652 transitions. [2023-11-29 03:55:33,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 652 transitions. [2023-11-29 03:55:33,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:33,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 652 transitions. [2023-11-29 03:55:33,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 31.047619047619047) internal successors, (652), 21 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:33,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 44.0) internal successors, (968), 22 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:33,871 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 44.0) internal successors, (968), 22 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:33,871 INFO L175 Difference]: Start difference. First operand has 109 places, 95 transitions, 695 flow. Second operand 21 states and 652 transitions. [2023-11-29 03:55:33,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 374 transitions, 3182 flow [2023-11-29 03:55:34,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 374 transitions, 2962 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-29 03:55:34,468 INFO L231 Difference]: Finished difference. Result has 132 places, 116 transitions, 1083 flow [2023-11-29 03:55:34,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1083, PETRI_PLACES=132, PETRI_TRANSITIONS=116} [2023-11-29 03:55:34,468 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 86 predicate places. [2023-11-29 03:55:34,469 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 116 transitions, 1083 flow [2023-11-29 03:55:34,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:34,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:34,469 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:34,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:55:34,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 03:55:34,669 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:34,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:34,670 INFO L85 PathProgramCache]: Analyzing trace with hash 785185942, now seen corresponding path program 1 times [2023-11-29 03:55:34,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:34,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859799143] [2023-11-29 03:55:34,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:34,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:34,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:34,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859799143] [2023-11-29 03:55:34,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859799143] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:55:34,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277302764] [2023-11-29 03:55:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:34,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:34,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:34,781 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:34,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:55:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:34,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:55:34,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:35,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:55:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:35,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277302764] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:55:35,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:55:35,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-11-29 03:55:35,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281645070] [2023-11-29 03:55:35,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:55:35,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 03:55:35,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:35,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 03:55:35,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:55:35,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 03:55:35,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 116 transitions, 1083 flow. Second operand has 20 states, 20 states have (on average 22.45) internal successors, (449), 20 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:35,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:35,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 03:55:35,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:43,560 INFO L124 PetriNetUnfolderBase]: 25129/48768 cut-off events. [2023-11-29 03:55:43,560 INFO L125 PetriNetUnfolderBase]: For 904612/904612 co-relation queries the response was YES. [2023-11-29 03:55:43,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201204 conditions, 48768 events. 25129/48768 cut-off events. For 904612/904612 co-relation queries the response was YES. Maximal size of possible extension queue 1411. Compared 482804 event pairs, 1241 based on Foata normal form. 2988/51555 useless extension candidates. Maximal degree in co-relation 201142. Up to 6607 conditions per place. [2023-11-29 03:55:44,060 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 521 selfloop transitions, 118 changer transitions 0/655 dead transitions. [2023-11-29 03:55:44,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 655 transitions, 5629 flow [2023-11-29 03:55:44,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 03:55:44,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-29 03:55:44,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1159 transitions. [2023-11-29 03:55:44,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.711916461916462 [2023-11-29 03:55:44,064 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1159 transitions. [2023-11-29 03:55:44,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1159 transitions. [2023-11-29 03:55:44,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:44,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1159 transitions. [2023-11-29 03:55:44,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 31.324324324324323) internal successors, (1159), 37 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:44,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 44.0) internal successors, (1672), 38 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:44,069 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 44.0) internal successors, (1672), 38 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:44,070 INFO L175 Difference]: Start difference. First operand has 132 places, 116 transitions, 1083 flow. Second operand 37 states and 1159 transitions. [2023-11-29 03:55:44,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 655 transitions, 5629 flow [2023-11-29 03:55:45,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 655 transitions, 5487 flow, removed 50 selfloop flow, removed 13 redundant places. [2023-11-29 03:55:45,728 INFO L231 Difference]: Finished difference. Result has 169 places, 174 transitions, 2082 flow [2023-11-29 03:55:45,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2082, PETRI_PLACES=169, PETRI_TRANSITIONS=174} [2023-11-29 03:55:45,729 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 123 predicate places. [2023-11-29 03:55:45,729 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 174 transitions, 2082 flow [2023-11-29 03:55:45,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 22.45) internal successors, (449), 20 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:45,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:45,729 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:45,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 03:55:45,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 03:55:45,930 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:55:45,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:45,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1410244219, now seen corresponding path program 2 times [2023-11-29 03:55:45,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:45,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663288859] [2023-11-29 03:55:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:45,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:46,095 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:46,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:46,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663288859] [2023-11-29 03:55:46,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663288859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:55:46,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655481325] [2023-11-29 03:55:46,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:55:46,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:46,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:46,096 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:46,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:55:46,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:55:46,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:55:46,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:55:46,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:46,330 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:46,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:55:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:46,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655481325] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:55:46,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:55:46,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-29 03:55:46,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223709752] [2023-11-29 03:55:46,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:55:46,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 03:55:46,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 03:55:46,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:55:46,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 03:55:46,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 174 transitions, 2082 flow. Second operand has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:46,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:46,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 03:55:46,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:56:11,878 INFO L124 PetriNetUnfolderBase]: 75277/135471 cut-off events. [2023-11-29 03:56:11,878 INFO L125 PetriNetUnfolderBase]: For 3011572/3011572 co-relation queries the response was YES. [2023-11-29 03:56:12,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641406 conditions, 135471 events. 75277/135471 cut-off events. For 3011572/3011572 co-relation queries the response was YES. Maximal size of possible extension queue 2065. Compared 1366133 event pairs, 2709 based on Foata normal form. 4188/139417 useless extension candidates. Maximal degree in co-relation 641330. Up to 16321 conditions per place. [2023-11-29 03:56:13,896 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 1599 selfloop transitions, 11 changer transitions 0/1626 dead transitions. [2023-11-29 03:56:13,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 1626 transitions, 24678 flow [2023-11-29 03:56:13,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:56:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 03:56:13,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 403 transitions. [2023-11-29 03:56:13,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7632575757575758 [2023-11-29 03:56:13,898 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 403 transitions. [2023-11-29 03:56:13,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 403 transitions. [2023-11-29 03:56:13,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:56:13,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 403 transitions. [2023-11-29 03:56:13,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 33.583333333333336) internal successors, (403), 12 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:56:13,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 44.0) internal successors, (572), 13 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:56:13,900 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 44.0) internal successors, (572), 13 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:56:13,900 INFO L175 Difference]: Start difference. First operand has 169 places, 174 transitions, 2082 flow. Second operand 12 states and 403 transitions. [2023-11-29 03:56:13,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 1626 transitions, 24678 flow [2023-11-29 03:56:17,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 1626 transitions, 21615 flow, removed 1331 selfloop flow, removed 13 redundant places. [2023-11-29 03:56:17,207 INFO L231 Difference]: Finished difference. Result has 173 places, 180 transitions, 1871 flow [2023-11-29 03:56:17,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1871, PETRI_PLACES=173, PETRI_TRANSITIONS=180} [2023-11-29 03:56:17,208 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 127 predicate places. [2023-11-29 03:56:17,208 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 180 transitions, 1871 flow [2023-11-29 03:56:17,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:56:17,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:56:17,208 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:56:17,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 03:56:17,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 03:56:17,409 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:56:17,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:17,409 INFO L85 PathProgramCache]: Analyzing trace with hash 937335495, now seen corresponding path program 2 times [2023-11-29 03:56:17,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:56:17,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023114236] [2023-11-29 03:56:17,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:17,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:56:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:56:17,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:56:17,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023114236] [2023-11-29 03:56:17,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023114236] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:56:17,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795405019] [2023-11-29 03:56:17,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:56:17,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:56:17,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:56:17,519 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:56:17,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:56:17,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:56:17,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:56:17,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:56:17,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:56:17,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:56:17,847 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:56:17,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795405019] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:56:17,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:56:17,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-11-29 03:56:17,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457051831] [2023-11-29 03:56:17,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:56:17,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 03:56:17,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:56:17,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 03:56:17,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:56:17,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 03:56:17,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 180 transitions, 1871 flow. Second operand has 23 states, 23 states have (on average 22.391304347826086) internal successors, (515), 23 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:56:17,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:56:17,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 03:56:17,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:56:57,384 INFO L124 PetriNetUnfolderBase]: 102673/199704 cut-off events. [2023-11-29 03:56:57,384 INFO L125 PetriNetUnfolderBase]: For 4753848/4753848 co-relation queries the response was YES. [2023-11-29 03:56:59,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 863973 conditions, 199704 events. 102673/199704 cut-off events. For 4753848/4753848 co-relation queries the response was YES. Maximal size of possible extension queue 3383. Compared 2285952 event pairs, 4997 based on Foata normal form. 4414/203569 useless extension candidates. Maximal degree in co-relation 863891. Up to 31519 conditions per place. [2023-11-29 03:57:00,442 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 701 selfloop transitions, 204 changer transitions 0/921 dead transitions. [2023-11-29 03:57:00,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 921 transitions, 9084 flow [2023-11-29 03:57:00,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-29 03:57:00,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-29 03:57:00,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1069 transitions. [2023-11-29 03:57:00,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.714572192513369 [2023-11-29 03:57:00,444 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1069 transitions. [2023-11-29 03:57:00,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1069 transitions. [2023-11-29 03:57:00,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:57:00,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1069 transitions. [2023-11-29 03:57:00,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 31.441176470588236) internal successors, (1069), 34 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:57:00,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 44.0) internal successors, (1540), 35 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:57:00,449 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 44.0) internal successors, (1540), 35 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:57:00,449 INFO L175 Difference]: Start difference. First operand has 173 places, 180 transitions, 1871 flow. Second operand 34 states and 1069 transitions. [2023-11-29 03:57:00,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 921 transitions, 9084 flow [2023-11-29 03:57:44,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 921 transitions, 8400 flow, removed 217 selfloop flow, removed 5 redundant places. [2023-11-29 03:57:44,859 INFO L231 Difference]: Finished difference. Result has 210 places, 283 transitions, 3765 flow [2023-11-29 03:57:44,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3765, PETRI_PLACES=210, PETRI_TRANSITIONS=283} [2023-11-29 03:57:44,859 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 164 predicate places. [2023-11-29 03:57:44,860 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 283 transitions, 3765 flow [2023-11-29 03:57:44,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 22.391304347826086) internal successors, (515), 23 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:57:44,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:57:44,860 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:57:44,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 03:57:45,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 03:57:45,061 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 03:57:45,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:45,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2031226806, now seen corresponding path program 2 times [2023-11-29 03:57:45,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:57:45,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526239668] [2023-11-29 03:57:45,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:45,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:57:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:45,190 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:57:45,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:57:45,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526239668] [2023-11-29 03:57:45,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526239668] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:57:45,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818037970] [2023-11-29 03:57:45,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:57:45,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:57:45,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:57:45,191 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:57:45,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d866c9a0-956d-46c2-bb88-42395187f20b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 03:57:45,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:57:45,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:57:45,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:57:45,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:57:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:57:45,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:57:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:57:45,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818037970] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:57:45,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:57:45,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-11-29 03:57:45,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503879973] [2023-11-29 03:57:45,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:57:45,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 03:57:45,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:57:45,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 03:57:45,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-11-29 03:57:45,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 03:57:45,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 283 transitions, 3765 flow. Second operand has 26 states, 26 states have (on average 22.346153846153847) internal successors, (581), 26 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:57:45,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:57:45,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 03:57:45,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand