./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_safe-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/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_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_safe-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/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_e4d75b96-353a-41e1-97f6-81f7328515e3/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 4d0c5b9355e30d5caa4f24695b56ab4fa8d9d282078ca8b4e24a8f9b8920e450 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:01:39,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:01:39,472 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 07:01:39,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:01:39,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:01:39,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:01:39,504 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:01:39,505 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:01:39,505 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:01:39,506 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:01:39,507 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 07:01:39,507 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 07:01:39,508 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:01:39,509 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:01:39,509 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:01:39,510 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:01:39,510 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 07:01:39,511 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 07:01:39,511 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:01:39,512 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 07:01:39,512 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:01:39,513 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 07:01:39,514 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 07:01:39,514 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 07:01:39,514 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 07:01:39,515 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 07:01:39,515 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 07:01:39,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 07:01:39,516 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:01:39,517 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:01:39,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:01:39,518 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 07:01:39,518 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 07:01:39,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:01:39,519 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:01:39,519 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 07:01:39,519 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 07:01:39,519 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 07:01:39,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 07:01:39,520 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 07:01:39,520 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 07:01:39,520 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 07:01:39,521 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 07:01:39,521 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 07:01:39,521 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_e4d75b96-353a-41e1-97f6-81f7328515e3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d0c5b9355e30d5caa4f24695b56ab4fa8d9d282078ca8b4e24a8f9b8920e450 [2023-11-29 07:01:39,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:01:39,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:01:39,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:01:39,759 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:01:39,759 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:01:39,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/fib_safe-10.i [2023-11-29 07:01:42,461 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:01:42,714 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:01:42,715 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/sv-benchmarks/c/pthread/fib_safe-10.i [2023-11-29 07:01:42,729 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/data/d38b3861f/e4aa16a8404c482d94937a84df90ecb4/FLAGfc5a4c71a [2023-11-29 07:01:42,744 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/data/d38b3861f/e4aa16a8404c482d94937a84df90ecb4 [2023-11-29 07:01:42,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:01:42,748 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:01:42,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:01:42,750 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:01:42,755 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:01:42,756 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:01:42" (1/1) ... [2023-11-29 07:01:42,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d44174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:42, skipping insertion in model container [2023-11-29 07:01:42,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:01:42" (1/1) ... [2023-11-29 07:01:42,801 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:01:43,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:01:43,110 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:01:43,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:01:43,176 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 07:01:43,177 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 07:01:43,182 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:01:43,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:43 WrapperNode [2023-11-29 07:01:43,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:01:43,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:01:43,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:01:43,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:01:43,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:43" (1/1) ... [2023-11-29 07:01:43,203 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:43" (1/1) ... [2023-11-29 07:01:43,226 INFO L138 Inliner]: procedures = 165, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 81 [2023-11-29 07:01:43,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:01:43,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:01:43,227 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:01:43,227 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:01:43,236 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:43" (1/1) ... [2023-11-29 07:01:43,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:43" (1/1) ... [2023-11-29 07:01:43,239 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:43" (1/1) ... [2023-11-29 07:01:43,254 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 07:01:43,255 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:43" (1/1) ... [2023-11-29 07:01:43,255 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:43" (1/1) ... [2023-11-29 07:01:43,261 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:43" (1/1) ... [2023-11-29 07:01:43,264 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:43" (1/1) ... [2023-11-29 07:01:43,267 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:43" (1/1) ... [2023-11-29 07:01:43,268 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:43" (1/1) ... [2023-11-29 07:01:43,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:01:43,273 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:01:43,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:01:43,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:01:43,274 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:43" (1/1) ... [2023-11-29 07:01:43,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:01:43,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:01:43,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 07:01:43,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 07:01:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-29 07:01:43,344 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-29 07:01:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-29 07:01:43,344 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-29 07:01:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 07:01:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 07:01:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 07:01:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 07:01:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:01:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 07:01:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 07:01:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 07:01:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 07:01:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 07:01:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 07:01:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:01:43,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:01:43,348 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 07:01:43,461 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:01:43,463 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:01:43,644 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:01:43,778 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:01:43,779 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 07:01:43,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:01:43 BoogieIcfgContainer [2023-11-29 07:01:43,780 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:01:43,783 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 07:01:43,783 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 07:01:43,787 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 07:01:43,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:01:42" (1/3) ... [2023-11-29 07:01:43,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2939e3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:01:43, skipping insertion in model container [2023-11-29 07:01:43,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:43" (2/3) ... [2023-11-29 07:01:43,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2939e3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:01:43, skipping insertion in model container [2023-11-29 07:01:43,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:01:43" (3/3) ... [2023-11-29 07:01:43,790 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-10.i [2023-11-29 07:01:43,809 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 07:01:43,817 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 07:01:43,817 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-29 07:01:43,818 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 07:01:43,865 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 07:01:43,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2023-11-29 07:01:43,927 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2023-11-29 07:01:43,927 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 07:01:43,931 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 07:01:43,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2023-11-29 07:01:43,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 90 flow [2023-11-29 07:01:43,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 07:01:43,950 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;@66fe7f01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 07:01:43,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-29 07:01:43,956 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 07:01:43,956 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-29 07:01:43,957 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 07:01:43,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:43,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:43,958 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 07:01:43,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:43,963 INFO L85 PathProgramCache]: Analyzing trace with hash -2124757497, now seen corresponding path program 1 times [2023-11-29 07:01:43,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:43,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22887950] [2023-11-29 07:01:43,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:43,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:44,253 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 07:01:44,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:44,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22887950] [2023-11-29 07:01:44,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22887950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:44,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:44,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:01:44,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375044204] [2023-11-29 07:01:44,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:44,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:01:44,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:44,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:01:44,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:01:44,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 07:01:44,312 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 07:01:44,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:44,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 07:01:44,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:44,619 INFO L124 PetriNetUnfolderBase]: 657/1292 cut-off events. [2023-11-29 07:01:44,619 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 07:01:44,625 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 07:01:44,637 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 46 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2023-11-29 07:01:44,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 249 flow [2023-11-29 07:01:44,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:01:44,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 07:01:44,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2023-11-29 07:01:44,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2023-11-29 07:01:44,652 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 135 transitions. [2023-11-29 07:01:44,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 135 transitions. [2023-11-29 07:01:44,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:44,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 135 transitions. [2023-11-29 07:01:44,659 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 07:01:44,663 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 07:01:44,663 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 07:01:44,665 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 90 flow. Second operand 4 states and 135 transitions. [2023-11-29 07:01:44,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 249 flow [2023-11-29 07:01:44,670 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 07:01:44,673 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2023-11-29 07:01:44,675 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 07:01:44,678 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2023-11-29 07:01:44,679 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2023-11-29 07:01:44,679 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 07:01:44,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:44,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:44,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 07:01:44,680 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 07:01:44,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:44,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1782477494, now seen corresponding path program 1 times [2023-11-29 07:01:44,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:44,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356646964] [2023-11-29 07:01:44,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:44,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:44,780 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 07:01:44,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:44,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356646964] [2023-11-29 07:01:44,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356646964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:44,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:44,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:01:44,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426225504] [2023-11-29 07:01:44,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:44,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:01:44,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:44,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:01:44,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:01:44,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 07:01:44,798 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 07:01:44,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:44,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 07:01:44,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:45,073 INFO L124 PetriNetUnfolderBase]: 885/1598 cut-off events. [2023-11-29 07:01:45,073 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2023-11-29 07:01:45,076 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 07:01:45,085 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 55 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-11-29 07:01:45,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 75 transitions, 315 flow [2023-11-29 07:01:45,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:01:45,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 07:01:45,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2023-11-29 07:01:45,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2023-11-29 07:01:45,088 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 135 transitions. [2023-11-29 07:01:45,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 135 transitions. [2023-11-29 07:01:45,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:45,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 135 transitions. [2023-11-29 07:01:45,090 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 07:01:45,091 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 07:01:45,092 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 07:01:45,092 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 4 states and 135 transitions. [2023-11-29 07:01:45,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 75 transitions, 315 flow [2023-11-29 07:01:45,095 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 07:01:45,097 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 143 flow [2023-11-29 07:01:45,097 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 07:01:45,098 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2023-11-29 07:01:45,098 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 143 flow [2023-11-29 07:01:45,099 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 07:01:45,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:45,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:45,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 07:01:45,099 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 07:01:45,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:45,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1804922460, now seen corresponding path program 1 times [2023-11-29 07:01:45,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:45,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310013827] [2023-11-29 07:01:45,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:45,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:45,180 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 07:01:45,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:45,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310013827] [2023-11-29 07:01:45,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310013827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:45,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:45,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 07:01:45,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286413147] [2023-11-29 07:01:45,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:45,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:01:45,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:45,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:01:45,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:01:45,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2023-11-29 07:01:45,189 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 07:01:45,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:45,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2023-11-29 07:01:45,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:45,478 INFO L124 PetriNetUnfolderBase]: 1133/2347 cut-off events. [2023-11-29 07:01:45,478 INFO L125 PetriNetUnfolderBase]: For 492/649 co-relation queries the response was YES. [2023-11-29 07:01:45,482 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 07:01:45,500 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-11-29 07:01:45,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 66 transitions, 300 flow [2023-11-29 07:01:45,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:01:45,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:01:45,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2023-11-29 07:01:45,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2023-11-29 07:01:45,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 102 transitions. [2023-11-29 07:01:45,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 102 transitions. [2023-11-29 07:01:45,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:45,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 102 transitions. [2023-11-29 07:01:45,503 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 07:01:45,504 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 07:01:45,504 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 07:01:45,504 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 143 flow. Second operand 3 states and 102 transitions. [2023-11-29 07:01:45,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 66 transitions, 300 flow [2023-11-29 07:01:45,506 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 07:01:45,507 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 153 flow [2023-11-29 07:01:45,508 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 07:01:45,509 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2023-11-29 07:01:45,509 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 153 flow [2023-11-29 07:01:45,509 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 07:01:45,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:45,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:45,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 07:01:45,510 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 07:01:45,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:45,510 INFO L85 PathProgramCache]: Analyzing trace with hash -118021125, now seen corresponding path program 1 times [2023-11-29 07:01:45,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:45,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551270220] [2023-11-29 07:01:45,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:45,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:45,576 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 07:01:45,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:45,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551270220] [2023-11-29 07:01:45,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551270220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:45,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:45,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 07:01:45,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566813509] [2023-11-29 07:01:45,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:45,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:01:45,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:45,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:01:45,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:01:45,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2023-11-29 07:01:45,585 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 07:01:45,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:45,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2023-11-29 07:01:45,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:45,899 INFO L124 PetriNetUnfolderBase]: 1133/2310 cut-off events. [2023-11-29 07:01:45,899 INFO L125 PetriNetUnfolderBase]: For 616/773 co-relation queries the response was YES. [2023-11-29 07:01:45,904 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 07:01:45,924 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-11-29 07:01:45,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 307 flow [2023-11-29 07:01:45,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:01:45,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:01:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2023-11-29 07:01:45,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2023-11-29 07:01:45,926 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 102 transitions. [2023-11-29 07:01:45,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 102 transitions. [2023-11-29 07:01:45,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:45,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 102 transitions. [2023-11-29 07:01:45,927 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 07:01:45,928 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 07:01:45,928 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 07:01:45,929 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 153 flow. Second operand 3 states and 102 transitions. [2023-11-29 07:01:45,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 307 flow [2023-11-29 07:01:45,931 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 07:01:45,932 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 159 flow [2023-11-29 07:01:45,933 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 07:01:45,933 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2023-11-29 07:01:45,934 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 159 flow [2023-11-29 07:01:45,934 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 07:01:45,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:45,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:45,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 07:01:45,935 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 07:01:45,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:45,936 INFO L85 PathProgramCache]: Analyzing trace with hash 653903621, now seen corresponding path program 1 times [2023-11-29 07:01:45,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:45,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154084637] [2023-11-29 07:01:45,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:45,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:46,002 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 07:01:46,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:46,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154084637] [2023-11-29 07:01:46,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154084637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:46,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:46,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:01:46,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58444354] [2023-11-29 07:01:46,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:46,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:01:46,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:46,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:01:46,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:01:46,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 07:01:46,015 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 07:01:46,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:46,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 07:01:46,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:46,500 INFO L124 PetriNetUnfolderBase]: 2065/3705 cut-off events. [2023-11-29 07:01:46,500 INFO L125 PetriNetUnfolderBase]: For 1351/1765 co-relation queries the response was YES. [2023-11-29 07:01:46,507 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 07:01:46,538 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 60 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2023-11-29 07:01:46,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 399 flow [2023-11-29 07:01:46,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:01:46,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 07:01:46,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2023-11-29 07:01:46,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7443181818181818 [2023-11-29 07:01:46,540 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 131 transitions. [2023-11-29 07:01:46,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 131 transitions. [2023-11-29 07:01:46,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:46,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 131 transitions. [2023-11-29 07:01:46,542 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 07:01:46,543 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 07:01:46,543 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 07:01:46,543 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 159 flow. Second operand 4 states and 131 transitions. [2023-11-29 07:01:46,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 399 flow [2023-11-29 07:01:46,546 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 07:01:46,548 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 179 flow [2023-11-29 07:01:46,548 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 07:01:46,549 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2023-11-29 07:01:46,549 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 179 flow [2023-11-29 07:01:46,549 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 07:01:46,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:46,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:46,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 07:01:46,550 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 07:01:46,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:46,550 INFO L85 PathProgramCache]: Analyzing trace with hash 636312731, now seen corresponding path program 1 times [2023-11-29 07:01:46,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:46,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102136996] [2023-11-29 07:01:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:46,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:46,610 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 07:01:46,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:46,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102136996] [2023-11-29 07:01:46,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102136996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:46,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:46,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:01:46,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562378824] [2023-11-29 07:01:46,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:46,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:01:46,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:46,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:01:46,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:01:46,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 07:01:46,622 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 07:01:46,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:46,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 07:01:46,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:47,043 INFO L124 PetriNetUnfolderBase]: 1601/3211 cut-off events. [2023-11-29 07:01:47,043 INFO L125 PetriNetUnfolderBase]: For 1181/1660 co-relation queries the response was YES. [2023-11-29 07:01:47,049 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 07:01:47,073 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2023-11-29 07:01:47,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 445 flow [2023-11-29 07:01:47,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:01:47,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 07:01:47,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2023-11-29 07:01:47,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2023-11-29 07:01:47,075 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 133 transitions. [2023-11-29 07:01:47,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 133 transitions. [2023-11-29 07:01:47,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:47,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 133 transitions. [2023-11-29 07:01:47,076 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 07:01:47,077 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 07:01:47,077 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 07:01:47,077 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 179 flow. Second operand 4 states and 133 transitions. [2023-11-29 07:01:47,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 445 flow [2023-11-29 07:01:47,079 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 07:01:47,081 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 197 flow [2023-11-29 07:01:47,081 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 07:01:47,082 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-11-29 07:01:47,082 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 197 flow [2023-11-29 07:01:47,083 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 07:01:47,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:47,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:47,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 07:01:47,083 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 07:01:47,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:47,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1160774394, now seen corresponding path program 1 times [2023-11-29 07:01:47,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:47,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895161678] [2023-11-29 07:01:47,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:47,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:47,162 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 07:01:47,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:47,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895161678] [2023-11-29 07:01:47,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895161678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:47,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:47,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:01:47,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617761905] [2023-11-29 07:01:47,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:47,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 07:01:47,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:47,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 07:01:47,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:01:47,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 07:01:47,172 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 07:01:47,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:47,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 07:01:47,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:47,476 INFO L124 PetriNetUnfolderBase]: 1121/2194 cut-off events. [2023-11-29 07:01:47,476 INFO L125 PetriNetUnfolderBase]: For 1435/1771 co-relation queries the response was YES. [2023-11-29 07:01:47,484 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 07:01:47,498 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2023-11-29 07:01:47,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 499 flow [2023-11-29 07:01:47,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 07:01:47,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 07:01:47,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2023-11-29 07:01:47,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2023-11-29 07:01:47,500 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 161 transitions. [2023-11-29 07:01:47,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 161 transitions. [2023-11-29 07:01:47,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:47,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 161 transitions. [2023-11-29 07:01:47,501 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 07:01:47,502 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 07:01:47,502 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 07:01:47,502 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 197 flow. Second operand 5 states and 161 transitions. [2023-11-29 07:01:47,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 499 flow [2023-11-29 07:01:47,506 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 07:01:47,508 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 217 flow [2023-11-29 07:01:47,508 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 07:01:47,509 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2023-11-29 07:01:47,509 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 217 flow [2023-11-29 07:01:47,510 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 07:01:47,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:47,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:47,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 07:01:47,510 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 07:01:47,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:47,511 INFO L85 PathProgramCache]: Analyzing trace with hash 345865615, now seen corresponding path program 1 times [2023-11-29 07:01:47,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:47,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168475617] [2023-11-29 07:01:47,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:47,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:47,592 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 07:01:47,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:47,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168475617] [2023-11-29 07:01:47,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168475617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:47,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:47,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:01:47,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524102811] [2023-11-29 07:01:47,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:47,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 07:01:47,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:47,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 07:01:47,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:01:47,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 07:01:47,603 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 07:01:47,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:47,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 07:01:47,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:47,921 INFO L124 PetriNetUnfolderBase]: 1167/2323 cut-off events. [2023-11-29 07:01:47,921 INFO L125 PetriNetUnfolderBase]: For 1787/2055 co-relation queries the response was YES. [2023-11-29 07:01:47,928 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 07:01:47,941 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2023-11-29 07:01:47,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 520 flow [2023-11-29 07:01:47,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 07:01:47,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 07:01:47,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2023-11-29 07:01:47,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2023-11-29 07:01:47,943 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 162 transitions. [2023-11-29 07:01:47,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 162 transitions. [2023-11-29 07:01:47,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:47,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 162 transitions. [2023-11-29 07:01:47,944 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 07:01:47,945 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 07:01:47,945 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 07:01:47,945 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 217 flow. Second operand 5 states and 162 transitions. [2023-11-29 07:01:47,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 520 flow [2023-11-29 07:01:47,949 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 07:01:47,950 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 242 flow [2023-11-29 07:01:47,950 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 07:01:47,951 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2023-11-29 07:01:47,951 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 242 flow [2023-11-29 07:01:47,951 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 07:01:47,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:47,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:47,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 07:01:47,952 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 07:01:47,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:47,952 INFO L85 PathProgramCache]: Analyzing trace with hash 108763395, now seen corresponding path program 1 times [2023-11-29 07:01:47,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:47,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860331471] [2023-11-29 07:01:47,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:47,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:48,028 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 07:01:48,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:48,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860331471] [2023-11-29 07:01:48,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860331471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:48,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:48,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:01:48,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485626469] [2023-11-29 07:01:48,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:48,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 07:01:48,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:48,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 07:01:48,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:01:48,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 07:01:48,038 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 07:01:48,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:48,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 07:01:48,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:48,385 INFO L124 PetriNetUnfolderBase]: 1258/2463 cut-off events. [2023-11-29 07:01:48,386 INFO L125 PetriNetUnfolderBase]: For 2561/2850 co-relation queries the response was YES. [2023-11-29 07:01:48,393 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 07:01:48,406 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 65 selfloop transitions, 9 changer transitions 0/94 dead transitions. [2023-11-29 07:01:48,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 560 flow [2023-11-29 07:01:48,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 07:01:48,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 07:01:48,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2023-11-29 07:01:48,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2023-11-29 07:01:48,408 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 162 transitions. [2023-11-29 07:01:48,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 162 transitions. [2023-11-29 07:01:48,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:48,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 162 transitions. [2023-11-29 07:01:48,409 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 07:01:48,410 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 07:01:48,410 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 07:01:48,410 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 242 flow. Second operand 5 states and 162 transitions. [2023-11-29 07:01:48,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 560 flow [2023-11-29 07:01:48,413 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 07:01:48,415 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 288 flow [2023-11-29 07:01:48,416 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 07:01:48,416 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2023-11-29 07:01:48,416 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 288 flow [2023-11-29 07:01:48,417 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 07:01:48,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:48,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:48,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 07:01:48,417 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 07:01:48,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:48,418 INFO L85 PathProgramCache]: Analyzing trace with hash 108763394, now seen corresponding path program 1 times [2023-11-29 07:01:48,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:48,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911756239] [2023-11-29 07:01:48,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:48,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:48,496 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 07:01:48,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:48,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911756239] [2023-11-29 07:01:48,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911756239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:48,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:48,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:01:48,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973306747] [2023-11-29 07:01:48,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:48,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 07:01:48,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:48,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 07:01:48,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:01:48,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 07:01:48,510 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 07:01:48,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:48,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 07:01:48,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:48,780 INFO L124 PetriNetUnfolderBase]: 1083/2162 cut-off events. [2023-11-29 07:01:48,780 INFO L125 PetriNetUnfolderBase]: For 3503/3753 co-relation queries the response was YES. [2023-11-29 07:01:48,786 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 07:01:48,799 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 54 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2023-11-29 07:01:48,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 80 transitions, 490 flow [2023-11-29 07:01:48,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 07:01:48,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 07:01:48,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2023-11-29 07:01:48,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6727272727272727 [2023-11-29 07:01:48,801 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 148 transitions. [2023-11-29 07:01:48,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 148 transitions. [2023-11-29 07:01:48,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:48,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 148 transitions. [2023-11-29 07:01:48,803 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 07:01:48,803 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 07:01:48,804 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 07:01:48,804 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 288 flow. Second operand 5 states and 148 transitions. [2023-11-29 07:01:48,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 80 transitions, 490 flow [2023-11-29 07:01:48,809 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 07:01:48,811 INFO L231 Difference]: Finished difference. Result has 74 places, 56 transitions, 271 flow [2023-11-29 07:01:48,812 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 07:01:48,812 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2023-11-29 07:01:48,813 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 56 transitions, 271 flow [2023-11-29 07:01:48,813 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 07:01:48,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:48,813 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:48,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 07:01:48,814 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 07:01:48,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:48,814 INFO L85 PathProgramCache]: Analyzing trace with hash 124818474, now seen corresponding path program 1 times [2023-11-29 07:01:48,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:48,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112607790] [2023-11-29 07:01:48,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:48,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:48,893 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 07:01:48,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:48,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112607790] [2023-11-29 07:01:48,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112607790] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:01:48,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246984315] [2023-11-29 07:01:48,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:48,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:01:48,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:01:48,898 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:01:48,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 07:01:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:48,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 07:01:48,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:49,049 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 07:01:49,049 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:01:49,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246984315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:49,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:01:49,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 07:01:49,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133155496] [2023-11-29 07:01:49,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:49,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 07:01:49,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:49,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 07:01:49,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 07:01:49,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 07:01:49,065 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 07:01:49,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:49,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 07:01:49,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:49,488 INFO L124 PetriNetUnfolderBase]: 1453/2648 cut-off events. [2023-11-29 07:01:49,488 INFO L125 PetriNetUnfolderBase]: For 4578/4994 co-relation queries the response was YES. [2023-11-29 07:01:49,496 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 07:01:49,511 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 84 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2023-11-29 07:01:49,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 107 transitions, 695 flow [2023-11-29 07:01:49,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 07:01:49,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 07:01:49,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2023-11-29 07:01:49,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2023-11-29 07:01:49,513 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 182 transitions. [2023-11-29 07:01:49,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 182 transitions. [2023-11-29 07:01:49,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:49,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 182 transitions. [2023-11-29 07:01:49,514 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 07:01:49,515 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 07:01:49,515 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 07:01:49,516 INFO L175 Difference]: Start difference. First operand has 74 places, 56 transitions, 271 flow. Second operand 6 states and 182 transitions. [2023-11-29 07:01:49,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 107 transitions, 695 flow [2023-11-29 07:01:49,523 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 07:01:49,525 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 268 flow [2023-11-29 07:01:49,525 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 07:01:49,526 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 29 predicate places. [2023-11-29 07:01:49,526 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 268 flow [2023-11-29 07:01:49,526 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 07:01:49,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:49,526 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:49,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 07:01:49,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 07:01:49,727 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 07:01:49,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:49,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1592783038, now seen corresponding path program 1 times [2023-11-29 07:01:49,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:49,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063084441] [2023-11-29 07:01:49,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:49,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:49,807 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 07:01:49,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:49,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063084441] [2023-11-29 07:01:49,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063084441] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:01:49,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312098792] [2023-11-29 07:01:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:49,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:01:49,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:01:49,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:01:49,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 07:01:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:49,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 07:01:49,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:49,977 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 07:01:49,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:01:49,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312098792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:49,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:01:49,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-29 07:01:49,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100387018] [2023-11-29 07:01:49,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:49,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:01:49,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:49,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:01:49,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:01:49,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2023-11-29 07:01:49,986 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 07:01:49,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:49,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2023-11-29 07:01:49,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:50,215 INFO L124 PetriNetUnfolderBase]: 1083/2400 cut-off events. [2023-11-29 07:01:50,215 INFO L125 PetriNetUnfolderBase]: For 4204/4383 co-relation queries the response was YES. [2023-11-29 07:01:50,220 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 07:01:50,230 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 54 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-11-29 07:01:50,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 513 flow [2023-11-29 07:01:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:01:50,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 07:01:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2023-11-29 07:01:50,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2023-11-29 07:01:50,232 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 120 transitions. [2023-11-29 07:01:50,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 120 transitions. [2023-11-29 07:01:50,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:50,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 120 transitions. [2023-11-29 07:01:50,233 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 07:01:50,234 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 07:01:50,234 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 07:01:50,234 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 268 flow. Second operand 4 states and 120 transitions. [2023-11-29 07:01:50,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 513 flow [2023-11-29 07:01:50,238 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 07:01:50,240 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 263 flow [2023-11-29 07:01:50,240 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 07:01:50,240 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2023-11-29 07:01:50,241 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 263 flow [2023-11-29 07:01:50,241 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 07:01:50,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:50,241 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:50,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 07:01:50,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:01:50,443 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 07:01:50,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:50,443 INFO L85 PathProgramCache]: Analyzing trace with hash -425594268, now seen corresponding path program 1 times [2023-11-29 07:01:50,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:50,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373257791] [2023-11-29 07:01:50,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:50,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:50,476 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 07:01:50,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:50,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373257791] [2023-11-29 07:01:50,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373257791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:50,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:50,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:01:50,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929344166] [2023-11-29 07:01:50,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:50,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:01:50,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:50,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:01:50,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:01:50,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-29 07:01:50,486 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 07:01:50,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:50,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-29 07:01:50,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:50,808 INFO L124 PetriNetUnfolderBase]: 1611/2891 cut-off events. [2023-11-29 07:01:50,808 INFO L125 PetriNetUnfolderBase]: For 5103/5472 co-relation queries the response was YES. [2023-11-29 07:01:50,813 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 07:01:50,822 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 68 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2023-11-29 07:01:50,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 90 transitions, 589 flow [2023-11-29 07:01:50,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:01:50,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 07:01:50,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2023-11-29 07:01:50,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2023-11-29 07:01:50,824 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 124 transitions. [2023-11-29 07:01:50,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 124 transitions. [2023-11-29 07:01:50,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:50,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 124 transitions. [2023-11-29 07:01:50,824 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 07:01:50,825 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 07:01:50,825 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 07:01:50,825 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 263 flow. Second operand 4 states and 124 transitions. [2023-11-29 07:01:50,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 90 transitions, 589 flow [2023-11-29 07:01:50,831 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 07:01:50,832 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 272 flow [2023-11-29 07:01:50,832 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 07:01:50,833 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2023-11-29 07:01:50,833 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 272 flow [2023-11-29 07:01:50,833 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 07:01:50,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:50,834 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:50,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 07:01:50,834 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 07:01:50,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:50,834 INFO L85 PathProgramCache]: Analyzing trace with hash -2131633635, now seen corresponding path program 1 times [2023-11-29 07:01:50,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:50,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321432847] [2023-11-29 07:01:50,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:50,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:50,907 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 07:01:50,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:50,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321432847] [2023-11-29 07:01:50,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321432847] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:01:50,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712706758] [2023-11-29 07:01:50,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:50,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:01:50,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:01:50,909 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:01:50,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 07:01:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:50,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 07:01:50,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:51,078 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 07:01:51,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:01:51,136 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 07:01:51,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712706758] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:01:51,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:01:51,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-29 07:01:51,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595043880] [2023-11-29 07:01:51,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:01:51,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 07:01:51,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:51,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 07:01:51,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-11-29 07:01:51,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 07:01:51,151 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 07:01:51,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:51,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 07:01:51,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:51,860 INFO L124 PetriNetUnfolderBase]: 2907/6187 cut-off events. [2023-11-29 07:01:51,861 INFO L125 PetriNetUnfolderBase]: For 12171/12623 co-relation queries the response was YES. [2023-11-29 07:01:51,875 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 07:01:51,894 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 129 selfloop transitions, 5 changer transitions 0/153 dead transitions. [2023-11-29 07:01:51,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 153 transitions, 1134 flow [2023-11-29 07:01:51,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 07:01:51,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 07:01:51,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2023-11-29 07:01:51,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7840909090909091 [2023-11-29 07:01:51,896 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 207 transitions. [2023-11-29 07:01:51,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 207 transitions. [2023-11-29 07:01:51,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:51,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 207 transitions. [2023-11-29 07:01:51,897 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 07:01:51,898 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 07:01:51,898 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 07:01:51,898 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 272 flow. Second operand 6 states and 207 transitions. [2023-11-29 07:01:51,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 153 transitions, 1134 flow [2023-11-29 07:01:51,936 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 07:01:51,939 INFO L231 Difference]: Finished difference. Result has 80 places, 57 transitions, 300 flow [2023-11-29 07:01:51,939 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 07:01:51,939 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 34 predicate places. [2023-11-29 07:01:51,940 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 57 transitions, 300 flow [2023-11-29 07:01:51,940 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 07:01:51,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:51,940 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:51,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 07:01:52,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 07:01:52,141 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 07:01:52,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:52,141 INFO L85 PathProgramCache]: Analyzing trace with hash -47291238, now seen corresponding path program 1 times [2023-11-29 07:01:52,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:52,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445200549] [2023-11-29 07:01:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:52,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:52,209 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 07:01:52,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:52,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445200549] [2023-11-29 07:01:52,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445200549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:01:52,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907240079] [2023-11-29 07:01:52,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:52,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:01:52,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:01:52,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:01:52,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 07:01:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:52,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 07:01:52,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:52,329 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 07:01:52,330 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:01:52,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907240079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:52,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:01:52,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 07:01:52,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594509911] [2023-11-29 07:01:52,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:52,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 07:01:52,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:52,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 07:01:52,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 07:01:52,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 07:01:52,342 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 07:01:52,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:52,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 07:01:52,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:53,132 INFO L124 PetriNetUnfolderBase]: 3691/6634 cut-off events. [2023-11-29 07:01:53,132 INFO L125 PetriNetUnfolderBase]: For 14336/14750 co-relation queries the response was YES. [2023-11-29 07:01:53,143 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 07:01:53,164 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 90 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2023-11-29 07:01:53,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 111 transitions, 812 flow [2023-11-29 07:01:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 07:01:53,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 07:01:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2023-11-29 07:01:53,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 07:01:53,166 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 176 transitions. [2023-11-29 07:01:53,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 176 transitions. [2023-11-29 07:01:53,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:53,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 176 transitions. [2023-11-29 07:01:53,168 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 07:01:53,168 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 07:01:53,169 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 07:01:53,169 INFO L175 Difference]: Start difference. First operand has 80 places, 57 transitions, 300 flow. Second operand 6 states and 176 transitions. [2023-11-29 07:01:53,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 111 transitions, 812 flow [2023-11-29 07:01:53,179 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 07:01:53,181 INFO L231 Difference]: Finished difference. Result has 82 places, 56 transitions, 294 flow [2023-11-29 07:01:53,181 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 07:01:53,181 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2023-11-29 07:01:53,181 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 56 transitions, 294 flow [2023-11-29 07:01:53,182 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 07:01:53,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:53,182 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:53,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 07:01:53,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 07:01:53,382 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 07:01:53,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:53,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1656132935, now seen corresponding path program 1 times [2023-11-29 07:01:53,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:53,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259951200] [2023-11-29 07:01:53,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:53,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:53,439 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 07:01:53,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:53,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259951200] [2023-11-29 07:01:53,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259951200] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:01:53,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662530264] [2023-11-29 07:01:53,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:53,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:01:53,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:01:53,441 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:01:53,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 07:01:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:53,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 07:01:53,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:53,554 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 07:01:53,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:01:53,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662530264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:53,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:01:53,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-29 07:01:53,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533617309] [2023-11-29 07:01:53,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:53,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 07:01:53,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:53,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 07:01:53,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:01:53,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 07:01:53,562 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 07:01:53,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:53,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 07:01:53,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:54,316 INFO L124 PetriNetUnfolderBase]: 3819/6572 cut-off events. [2023-11-29 07:01:54,316 INFO L125 PetriNetUnfolderBase]: For 15033/15240 co-relation queries the response was YES. [2023-11-29 07:01:54,330 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 07:01:54,359 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 53 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2023-11-29 07:01:54,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 77 transitions, 553 flow [2023-11-29 07:01:54,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:01:54,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 07:01:54,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2023-11-29 07:01:54,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6420454545454546 [2023-11-29 07:01:54,360 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 113 transitions. [2023-11-29 07:01:54,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 113 transitions. [2023-11-29 07:01:54,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:54,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 113 transitions. [2023-11-29 07:01:54,361 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 07:01:54,362 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 07:01:54,362 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 07:01:54,362 INFO L175 Difference]: Start difference. First operand has 82 places, 56 transitions, 294 flow. Second operand 4 states and 113 transitions. [2023-11-29 07:01:54,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 77 transitions, 553 flow [2023-11-29 07:01:54,381 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 07:01:54,383 INFO L231 Difference]: Finished difference. Result has 81 places, 55 transitions, 301 flow [2023-11-29 07:01:54,384 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 07:01:54,384 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2023-11-29 07:01:54,384 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 55 transitions, 301 flow [2023-11-29 07:01:54,384 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 07:01:54,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:54,385 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 07:01:54,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 07:01:54,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 07:01:54,585 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 07:01:54,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:54,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1817270937, now seen corresponding path program 1 times [2023-11-29 07:01:54,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:54,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240217668] [2023-11-29 07:01:54,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:54,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:54,668 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 07:01:54,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:54,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240217668] [2023-11-29 07:01:54,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240217668] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:01:54,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440624435] [2023-11-29 07:01:54,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:54,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:01:54,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:01:54,670 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:01:54,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 07:01:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:54,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 07:01:54,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:54,853 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 07:01:54,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:01:54,935 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 07:01:54,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440624435] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:01:54,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:01:54,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-11-29 07:01:54,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903621640] [2023-11-29 07:01:54,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:01:54,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 07:01:54,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:54,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 07:01:54,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-29 07:01:54,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 07:01:54,972 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 07:01:54,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:54,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 07:01:54,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:58,045 INFO L124 PetriNetUnfolderBase]: 11247/21496 cut-off events. [2023-11-29 07:01:58,045 INFO L125 PetriNetUnfolderBase]: For 61176/62265 co-relation queries the response was YES. [2023-11-29 07:01:58,104 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 07:01:58,181 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 393 selfloop transitions, 71 changer transitions 0/480 dead transitions. [2023-11-29 07:01:58,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 480 transitions, 3831 flow [2023-11-29 07:01:58,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 07:01:58,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 07:01:58,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 905 transitions. [2023-11-29 07:01:58,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.734577922077922 [2023-11-29 07:01:58,185 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 905 transitions. [2023-11-29 07:01:58,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 905 transitions. [2023-11-29 07:01:58,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:58,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 905 transitions. [2023-11-29 07:01:58,189 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 07:01:58,192 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 07:01:58,193 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 07:01:58,193 INFO L175 Difference]: Start difference. First operand has 81 places, 55 transitions, 301 flow. Second operand 28 states and 905 transitions. [2023-11-29 07:01:58,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 480 transitions, 3831 flow [2023-11-29 07:01:58,247 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 07:01:58,252 INFO L231 Difference]: Finished difference. Result has 121 places, 127 transitions, 1213 flow [2023-11-29 07:01:58,253 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 07:01:58,253 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 75 predicate places. [2023-11-29 07:01:58,253 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 127 transitions, 1213 flow [2023-11-29 07:01:58,254 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 07:01:58,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:58,254 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 07:01:58,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 07:01:58,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 07:01:58,454 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 07:01:58,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:58,455 INFO L85 PathProgramCache]: Analyzing trace with hash 872094804, now seen corresponding path program 1 times [2023-11-29 07:01:58,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:58,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743364962] [2023-11-29 07:01:58,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:58,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:58,527 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 07:01:58,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:58,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743364962] [2023-11-29 07:01:58,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743364962] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:01:58,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455473073] [2023-11-29 07:01:58,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:58,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:01:58,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:01:58,530 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:01:58,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 07:01:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:58,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 07:01:58,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:58,691 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 07:01:58,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:01:58,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455473073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:58,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:01:58,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2023-11-29 07:01:58,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471120824] [2023-11-29 07:01:58,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:58,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 07:01:58,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:58,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 07:01:58,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:01:58,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 07:01:58,703 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 07:01:58,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:58,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 07:01:58,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:02:01,146 INFO L124 PetriNetUnfolderBase]: 9393/18472 cut-off events. [2023-11-29 07:02:01,146 INFO L125 PetriNetUnfolderBase]: For 195866/196888 co-relation queries the response was YES. [2023-11-29 07:02:01,228 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 07:02:01,314 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 88 selfloop transitions, 27 changer transitions 0/131 dead transitions. [2023-11-29 07:02:01,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 131 transitions, 1336 flow [2023-11-29 07:02:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 07:02:01,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 07:02:01,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2023-11-29 07:02:01,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6553030303030303 [2023-11-29 07:02:01,316 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 173 transitions. [2023-11-29 07:02:01,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 173 transitions. [2023-11-29 07:02:01,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:02:01,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 173 transitions. [2023-11-29 07:02:01,317 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 07:02:01,318 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 07:02:01,318 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 07:02:01,319 INFO L175 Difference]: Start difference. First operand has 121 places, 127 transitions, 1213 flow. Second operand 6 states and 173 transitions. [2023-11-29 07:02:01,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 131 transitions, 1336 flow [2023-11-29 07:02:02,164 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 07:02:02,166 INFO L231 Difference]: Finished difference. Result has 109 places, 95 transitions, 682 flow [2023-11-29 07:02:02,166 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 07:02:02,166 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2023-11-29 07:02:02,166 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 95 transitions, 682 flow [2023-11-29 07:02:02,167 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 07:02:02,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:02:02,167 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:02:02,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 07:02:02,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 07:02:02,367 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 07:02:02,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:02:02,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1466028033, now seen corresponding path program 1 times [2023-11-29 07:02:02,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:02:02,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023282479] [2023-11-29 07:02:02,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:02:02,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:02:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:02:02,402 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 07:02:02,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:02:02,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023282479] [2023-11-29 07:02:02,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023282479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:02:02,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:02:02,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:02:02,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158503268] [2023-11-29 07:02:02,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:02:02,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:02:02,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:02:02,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:02:02,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:02:02,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-29 07:02:02,412 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 07:02:02,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:02:02,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-29 07:02:02,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:02:05,327 INFO L124 PetriNetUnfolderBase]: 14883/25342 cut-off events. [2023-11-29 07:02:05,327 INFO L125 PetriNetUnfolderBase]: For 158181/159246 co-relation queries the response was YES. [2023-11-29 07:02:05,441 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 07:02:05,541 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 145 selfloop transitions, 6 changer transitions 0/165 dead transitions. [2023-11-29 07:02:05,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 165 transitions, 1486 flow [2023-11-29 07:02:05,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:02:05,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 07:02:05,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2023-11-29 07:02:05,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2023-11-29 07:02:05,542 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 116 transitions. [2023-11-29 07:02:05,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 116 transitions. [2023-11-29 07:02:05,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:02:05,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 116 transitions. [2023-11-29 07:02:05,543 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 07:02:05,543 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 07:02:05,543 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 07:02:05,543 INFO L175 Difference]: Start difference. First operand has 109 places, 95 transitions, 682 flow. Second operand 4 states and 116 transitions. [2023-11-29 07:02:05,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 165 transitions, 1486 flow [2023-11-29 07:02:05,983 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 07:02:05,985 INFO L231 Difference]: Finished difference. Result has 108 places, 95 transitions, 681 flow [2023-11-29 07:02:05,985 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 07:02:05,985 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2023-11-29 07:02:05,985 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 95 transitions, 681 flow [2023-11-29 07:02:05,986 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 07:02:05,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:02:05,986 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:02:05,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 07:02:05,986 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 07:02:05,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:02:05,986 INFO L85 PathProgramCache]: Analyzing trace with hash 199486861, now seen corresponding path program 1 times [2023-11-29 07:02:05,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:02:05,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728271015] [2023-11-29 07:02:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:02:05,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:02:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:02:06,026 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 07:02:06,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:02:06,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728271015] [2023-11-29 07:02:06,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728271015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:02:06,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:02:06,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:02:06,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655849672] [2023-11-29 07:02:06,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:02:06,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:02:06,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:02:06,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:02:06,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:02:06,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 07:02:06,034 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 07:02:06,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:02:06,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 07:02:06,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:02:08,739 INFO L124 PetriNetUnfolderBase]: 11993/21452 cut-off events. [2023-11-29 07:02:08,739 INFO L125 PetriNetUnfolderBase]: For 186734/186734 co-relation queries the response was YES. [2023-11-29 07:02:08,816 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 07:02:08,904 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 194 selfloop transitions, 9 changer transitions 0/219 dead transitions. [2023-11-29 07:02:08,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 219 transitions, 2147 flow [2023-11-29 07:02:08,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:02:08,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 07:02:08,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2023-11-29 07:02:08,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761363636363636 [2023-11-29 07:02:08,906 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 119 transitions. [2023-11-29 07:02:08,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 119 transitions. [2023-11-29 07:02:08,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:02:08,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 119 transitions. [2023-11-29 07:02:08,906 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 07:02:08,907 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 07:02:08,907 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 07:02:08,907 INFO L175 Difference]: Start difference. First operand has 108 places, 95 transitions, 681 flow. Second operand 4 states and 119 transitions. [2023-11-29 07:02:08,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 219 transitions, 2147 flow [2023-11-29 07:02:09,093 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 07:02:09,096 INFO L231 Difference]: Finished difference. Result has 109 places, 95 transitions, 695 flow [2023-11-29 07:02:09,096 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 07:02:09,097 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2023-11-29 07:02:09,097 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 95 transitions, 695 flow [2023-11-29 07:02:09,097 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 07:02:09,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:02:09,097 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:02:09,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 07:02:09,097 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 07:02:09,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:02:09,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1835742971, now seen corresponding path program 1 times [2023-11-29 07:02:09,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:02:09,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168925064] [2023-11-29 07:02:09,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:02:09,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:02:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:02:09,192 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 07:02:09,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:02:09,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168925064] [2023-11-29 07:02:09,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168925064] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:02:09,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712278216] [2023-11-29 07:02:09,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:02:09,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:02:09,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:02:09,194 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:02:09,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 07:02:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:02:09,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 07:02:09,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:02:09,405 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 07:02:09,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:02:09,511 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 07:02:09,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712278216] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:02:09,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:02:09,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-29 07:02:09,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833007536] [2023-11-29 07:02:09,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:02:09,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 07:02:09,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:02:09,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 07:02:09,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2023-11-29 07:02:09,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 07:02:09,545 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 07:02:09,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:02:09,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 07:02:09,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:02:13,253 INFO L124 PetriNetUnfolderBase]: 13285/25710 cut-off events. [2023-11-29 07:02:13,253 INFO L125 PetriNetUnfolderBase]: For 259938/259938 co-relation queries the response was YES. [2023-11-29 07:02:13,373 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 07:02:13,471 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 304 selfloop transitions, 54 changer transitions 0/374 dead transitions. [2023-11-29 07:02:13,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 374 transitions, 3182 flow [2023-11-29 07:02:13,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 07:02:13,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 07:02:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 652 transitions. [2023-11-29 07:02:13,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7056277056277056 [2023-11-29 07:02:13,473 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 652 transitions. [2023-11-29 07:02:13,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 652 transitions. [2023-11-29 07:02:13,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:02:13,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 652 transitions. [2023-11-29 07:02:13,476 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 07:02:13,478 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 07:02:13,479 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 07:02:13,479 INFO L175 Difference]: Start difference. First operand has 109 places, 95 transitions, 695 flow. Second operand 21 states and 652 transitions. [2023-11-29 07:02:13,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 374 transitions, 3182 flow [2023-11-29 07:02:13,931 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 07:02:13,935 INFO L231 Difference]: Finished difference. Result has 132 places, 116 transitions, 1083 flow [2023-11-29 07:02:13,935 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 07:02:13,935 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 86 predicate places. [2023-11-29 07:02:13,935 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 116 transitions, 1083 flow [2023-11-29 07:02:13,936 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 07:02:13,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:02:13,936 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 07:02:13,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 07:02:14,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:02:14,136 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 07:02:14,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:02:14,137 INFO L85 PathProgramCache]: Analyzing trace with hash 785185942, now seen corresponding path program 1 times [2023-11-29 07:02:14,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:02:14,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317689546] [2023-11-29 07:02:14,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:02:14,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:02:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:02:14,230 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 07:02:14,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:02:14,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317689546] [2023-11-29 07:02:14,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317689546] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:02:14,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117797980] [2023-11-29 07:02:14,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:02:14,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:02:14,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:02:14,232 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:02:14,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 07:02:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:02:14,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 07:02:14,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:02:14,587 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 07:02:14,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:02:14,685 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 07:02:14,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117797980] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:02:14,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:02:14,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-11-29 07:02:14,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041648591] [2023-11-29 07:02:14,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:02:14,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 07:02:14,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:02:14,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 07:02:14,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2023-11-29 07:02:14,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 07:02:14,734 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 07:02:14,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:02:14,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 07:02:14,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:02:22,401 INFO L124 PetriNetUnfolderBase]: 25129/48768 cut-off events. [2023-11-29 07:02:22,401 INFO L125 PetriNetUnfolderBase]: For 904612/904612 co-relation queries the response was YES. [2023-11-29 07:02:22,682 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 07:02:22,900 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 521 selfloop transitions, 118 changer transitions 0/655 dead transitions. [2023-11-29 07:02:22,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 655 transitions, 5629 flow [2023-11-29 07:02:22,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 07:02:22,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-29 07:02:22,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1159 transitions. [2023-11-29 07:02:22,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.711916461916462 [2023-11-29 07:02:22,903 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1159 transitions. [2023-11-29 07:02:22,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1159 transitions. [2023-11-29 07:02:22,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:02:22,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1159 transitions. [2023-11-29 07:02:22,906 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 07:02:22,909 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 07:02:22,909 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 07:02:22,909 INFO L175 Difference]: Start difference. First operand has 132 places, 116 transitions, 1083 flow. Second operand 37 states and 1159 transitions. [2023-11-29 07:02:22,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 655 transitions, 5629 flow [2023-11-29 07:02:24,465 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 07:02:24,473 INFO L231 Difference]: Finished difference. Result has 169 places, 174 transitions, 2082 flow [2023-11-29 07:02:24,473 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 07:02:24,473 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 123 predicate places. [2023-11-29 07:02:24,474 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 174 transitions, 2082 flow [2023-11-29 07:02:24,474 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 07:02:24,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:02:24,474 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:02:24,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 07:02:24,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:02:24,675 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 07:02:24,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:02:24,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1410244219, now seen corresponding path program 2 times [2023-11-29 07:02:24,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:02:24,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972052246] [2023-11-29 07:02:24,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:02:24,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:02:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:02:24,824 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 07:02:24,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:02:24,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972052246] [2023-11-29 07:02:24,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972052246] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:02:24,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755700628] [2023-11-29 07:02:24,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 07:02:24,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:02:24,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:02:24,826 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:02:24,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 07:02:24,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 07:02:24,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:02:24,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 07:02:24,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:02:25,159 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 07:02:25,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:02:25,246 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 07:02:25,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755700628] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:02:25,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:02:25,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-29 07:02:25,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221309850] [2023-11-29 07:02:25,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:02:25,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 07:02:25,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:02:25,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 07:02:25,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2023-11-29 07:02:25,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-29 07:02:25,254 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 07:02:25,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:02:25,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-29 07:02:25,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:02:48,852 INFO L124 PetriNetUnfolderBase]: 75277/135471 cut-off events. [2023-11-29 07:02:48,852 INFO L125 PetriNetUnfolderBase]: For 3011572/3011572 co-relation queries the response was YES. [2023-11-29 07:02:49,829 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 07:02:50,674 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 1599 selfloop transitions, 11 changer transitions 0/1626 dead transitions. [2023-11-29 07:02:50,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 1626 transitions, 24678 flow [2023-11-29 07:02:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 07:02:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 07:02:50,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 403 transitions. [2023-11-29 07:02:50,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7632575757575758 [2023-11-29 07:02:50,677 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 403 transitions. [2023-11-29 07:02:50,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 403 transitions. [2023-11-29 07:02:50,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:02:50,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 403 transitions. [2023-11-29 07:02:50,678 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 07:02:50,679 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 07:02:50,679 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 07:02:50,680 INFO L175 Difference]: Start difference. First operand has 169 places, 174 transitions, 2082 flow. Second operand 12 states and 403 transitions. [2023-11-29 07:02:50,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 1626 transitions, 24678 flow [2023-11-29 07:02:53,796 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 07:02:53,809 INFO L231 Difference]: Finished difference. Result has 173 places, 180 transitions, 1871 flow [2023-11-29 07:02:53,810 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 07:02:53,810 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 127 predicate places. [2023-11-29 07:02:53,810 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 180 transitions, 1871 flow [2023-11-29 07:02:53,810 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 07:02:53,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:02:53,810 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 07:02:53,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 07:02:54,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:02:54,011 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 07:02:54,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:02:54,011 INFO L85 PathProgramCache]: Analyzing trace with hash 937335495, now seen corresponding path program 2 times [2023-11-29 07:02:54,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:02:54,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871928535] [2023-11-29 07:02:54,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:02:54,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:02:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:02:54,121 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 07:02:54,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:02:54,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871928535] [2023-11-29 07:02:54,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871928535] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:02:54,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932645330] [2023-11-29 07:02:54,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 07:02:54,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:02:54,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:02:54,124 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:02:54,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 07:02:54,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 07:02:54,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:02:54,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 07:02:54,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:02:54,382 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 07:02:54,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:02:54,494 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 07:02:54,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932645330] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:02:54,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:02:54,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-11-29 07:02:54,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876746207] [2023-11-29 07:02:54,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:02:54,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 07:02:54,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:02:54,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 07:02:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2023-11-29 07:02:54,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 07:02:54,543 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 07:02:54,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:02:54,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 07:02:54,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:03:31,173 INFO L124 PetriNetUnfolderBase]: 102673/199704 cut-off events. [2023-11-29 07:03:31,173 INFO L125 PetriNetUnfolderBase]: For 4753848/4753848 co-relation queries the response was YES. [2023-11-29 07:03:33,060 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 07:03:33,901 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 701 selfloop transitions, 204 changer transitions 0/921 dead transitions. [2023-11-29 07:03:33,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 921 transitions, 9084 flow [2023-11-29 07:03:33,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-29 07:03:33,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-29 07:03:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1069 transitions. [2023-11-29 07:03:33,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.714572192513369 [2023-11-29 07:03:33,905 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1069 transitions. [2023-11-29 07:03:33,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1069 transitions. [2023-11-29 07:03:33,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:03:33,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1069 transitions. [2023-11-29 07:03:33,907 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 07:03:33,909 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 07:03:33,909 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 07:03:33,909 INFO L175 Difference]: Start difference. First operand has 173 places, 180 transitions, 1871 flow. Second operand 34 states and 1069 transitions. [2023-11-29 07:03:33,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 921 transitions, 9084 flow [2023-11-29 07:04:21,451 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 07:04:21,460 INFO L231 Difference]: Finished difference. Result has 210 places, 283 transitions, 3765 flow [2023-11-29 07:04:21,460 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 07:04:21,461 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 164 predicate places. [2023-11-29 07:04:21,461 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 283 transitions, 3765 flow [2023-11-29 07:04:21,461 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 07:04:21,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:04:21,462 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 07:04:21,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 07:04:21,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:04:21,662 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 07:04:21,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:04:21,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2031226806, now seen corresponding path program 2 times [2023-11-29 07:04:21,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:04:21,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598267188] [2023-11-29 07:04:21,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:21,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:04:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:21,778 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 07:04:21,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:04:21,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598267188] [2023-11-29 07:04:21,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598267188] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:04:21,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760499351] [2023-11-29 07:04:21,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 07:04:21,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:04:21,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:04:21,780 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:04:21,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 07:04:21,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 07:04:21,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:04:21,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 07:04:21,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:04:22,079 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 07:04:22,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:04:22,231 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 07:04:22,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760499351] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:04:22,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:04:22,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-11-29 07:04:22,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470953925] [2023-11-29 07:04:22,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:04:22,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 07:04:22,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:04:22,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 07:04:22,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-11-29 07:04:22,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 07:04:22,294 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 07:04:22,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:04:22,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 07:04:22,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:05:38,343 INFO L124 PetriNetUnfolderBase]: 180373/355062 cut-off events. [2023-11-29 07:05:38,343 INFO L125 PetriNetUnfolderBase]: For 15073716/15073716 co-relation queries the response was YES. [2023-11-29 07:05:42,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1575005 conditions, 355062 events. 180373/355062 cut-off events. For 15073716/15073716 co-relation queries the response was YES. Maximal size of possible extension queue 5897. Compared 4359453 event pairs, 4157 based on Foata normal form. 11718/366189 useless extension candidates. Maximal degree in co-relation 1574912. Up to 43807 conditions per place. [2023-11-29 07:05:43,684 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 1113 selfloop transitions, 403 changer transitions 0/1532 dead transitions. [2023-11-29 07:05:43,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 1532 transitions, 15644 flow [2023-11-29 07:05:43,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-29 07:05:43,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-11-29 07:05:43,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 1730 transitions. [2023-11-29 07:05:43,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7148760330578512 [2023-11-29 07:05:43,689 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 1730 transitions. [2023-11-29 07:05:43,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 1730 transitions. [2023-11-29 07:05:43,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:05:43,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 1730 transitions. [2023-11-29 07:05:43,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 31.454545454545453) internal successors, (1730), 55 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states 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 07:05:43,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 44.0) internal successors, (2464), 56 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:05:43,698 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 44.0) internal successors, (2464), 56 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:05:43,698 INFO L175 Difference]: Start difference. First operand has 210 places, 283 transitions, 3765 flow. Second operand 55 states and 1730 transitions. [2023-11-29 07:05:43,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 1532 transitions, 15644 flow [2023-11-29 07:08:33,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 1532 transitions, 15093 flow, removed 248 selfloop flow, removed 17 redundant places. [2023-11-29 07:08:33,610 INFO L231 Difference]: Finished difference. Result has 266 places, 471 transitions, 7453 flow [2023-11-29 07:08:33,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3540, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=7453, PETRI_PLACES=266, PETRI_TRANSITIONS=471} [2023-11-29 07:08:33,611 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 220 predicate places. [2023-11-29 07:08:33,611 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 471 transitions, 7453 flow [2023-11-29 07:08:33,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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 07:08:33,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:08:33,612 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:08:33,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 07:08:33,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:33,813 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-29 07:08:33,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:33,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1931974303, now seen corresponding path program 3 times [2023-11-29 07:08:33,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:33,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645915651] [2023-11-29 07:08:33,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:33,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:08:33,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:33,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645915651] [2023-11-29 07:08:33,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645915651] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:08:33,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818359127] [2023-11-29 07:08:33,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 07:08:33,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:33,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:33,951 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:33,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d75b96-353a-41e1-97f6-81f7328515e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 07:08:34,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 07:08:34,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:08:34,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 07:08:34,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:08:34,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:34,447 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:08:34,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818359127] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:34,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:08:34,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-11-29 07:08:34,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652450048] [2023-11-29 07:08:34,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:34,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 07:08:34,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:34,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 07:08:34,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2023-11-29 07:08:34,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-29 07:08:34,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 471 transitions, 7453 flow. Second operand has 29 states, 29 states have (on average 22.310344827586206) internal successors, (647), 29 states have internal predecessors, (647), 0 states have call successors, (0), 0 states 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 07:08:34,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:08:34,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-29 07:08:34,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand