./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_safe-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_safe-5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB --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 74a086edb560572752b8cbc391425d974c2cbbd7d3553767e0707a5dc02a4897 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:12:43,179 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:12:43,260 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 05:12:43,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:12:43,266 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:12:43,292 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:12:43,293 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:12:43,293 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:12:43,293 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:12:43,293 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:12:43,293 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:12:43,294 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:12:43,294 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:12:43,294 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:12:43,294 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:12:43,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:12:43,295 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:12:43,295 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:12:43,295 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:12:43,295 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:12:43,295 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:12:43,295 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:12:43,296 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:12:43,296 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:12:43,296 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 05:12:43,296 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:12:43,296 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:12:43,296 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:12:43,296 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:12:43,296 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:12:43,297 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:12:43,297 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:12:43,297 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:12:43,297 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:12:43,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:12:43,297 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:12:43,298 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:12:43,298 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:12:43,298 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:12:43,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:12:43,298 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:12:43,298 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:12:43,299 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:12:43,299 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:12:43,299 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:12:43,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:12:43,299 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:12:43,299 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:12:43,299 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:12:43,299 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:12:43,300 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 74a086edb560572752b8cbc391425d974c2cbbd7d3553767e0707a5dc02a4897 [2024-11-28 05:12:43,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:12:43,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:12:43,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:12:43,588 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:12:43,589 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:12:43,590 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/fib_safe-5.i [2024-11-28 05:12:46,542 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/data/e9166910d/32cf5d1b341047b5a3515764bd3315fb/FLAG491c14006 [2024-11-28 05:12:46,995 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:12:46,997 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/sv-benchmarks/c/pthread/fib_safe-5.i [2024-11-28 05:12:47,017 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/data/e9166910d/32cf5d1b341047b5a3515764bd3315fb/FLAG491c14006 [2024-11-28 05:12:47,040 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/data/e9166910d/32cf5d1b341047b5a3515764bd3315fb [2024-11-28 05:12:47,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:12:47,045 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:12:47,046 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:12:47,047 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:12:47,052 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:12:47,053 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:12:47" (1/1) ... [2024-11-28 05:12:47,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f131bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:47, skipping insertion in model container [2024-11-28 05:12:47,056 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:12:47" (1/1) ... [2024-11-28 05:12:47,104 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:12:47,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:12:47,530 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:12:47,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:12:47,623 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:12:47,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:47 WrapperNode [2024-11-28 05:12:47,624 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:12:47,625 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:12:47,625 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:12:47,625 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:12:47,632 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:47" (1/1) ... [2024-11-28 05:12:47,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:47" (1/1) ... [2024-11-28 05:12:47,666 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2024-11-28 05:12:47,667 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:12:47,667 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:12:47,668 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:12:47,668 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:12:47,677 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:47" (1/1) ... [2024-11-28 05:12:47,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:47" (1/1) ... [2024-11-28 05:12:47,680 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:47" (1/1) ... [2024-11-28 05:12:47,707 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 05:12:47,708 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:47" (1/1) ... [2024-11-28 05:12:47,708 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:47" (1/1) ... [2024-11-28 05:12:47,716 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:47" (1/1) ... [2024-11-28 05:12:47,721 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:47" (1/1) ... [2024-11-28 05:12:47,725 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:47" (1/1) ... [2024-11-28 05:12:47,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:47" (1/1) ... [2024-11-28 05:12:47,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:47" (1/1) ... [2024-11-28 05:12:47,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:12:47,740 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:12:47,740 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:12:47,740 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:12:47,741 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:47" (1/1) ... [2024-11-28 05:12:47,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:12:47,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:12:47,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:12:47,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:12:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-28 05:12:47,828 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-28 05:12:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-28 05:12:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-28 05:12:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 05:12:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:12:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:12:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 05:12:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:12:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:12:47,831 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 05:12:47,982 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:12:47,984 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:12:48,257 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:12:48,258 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:12:48,414 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:12:48,414 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 05:12:48,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:12:48 BoogieIcfgContainer [2024-11-28 05:12:48,415 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:12:48,419 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:12:48,419 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:12:48,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:12:48,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:12:47" (1/3) ... [2024-11-28 05:12:48,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c21f9af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:12:48, skipping insertion in model container [2024-11-28 05:12:48,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:47" (2/3) ... [2024-11-28 05:12:48,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c21f9af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:12:48, skipping insertion in model container [2024-11-28 05:12:48,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:12:48" (3/3) ... [2024-11-28 05:12:48,429 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_safe-5.i [2024-11-28 05:12:48,447 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:12:48,449 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_safe-5.i that has 3 procedures, 42 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2024-11-28 05:12:48,450 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:12:48,564 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 05:12:48,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2024-11-28 05:12:48,659 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2024-11-28 05:12:48,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:12:48,671 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 106 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. [2024-11-28 05:12:48,671 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2024-11-28 05:12:48,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 90 flow [2024-11-28 05:12:48,695 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:12:48,715 INFO L333 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, 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;@18245116, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:12:48,715 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-28 05:12:48,731 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:12:48,731 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-11-28 05:12:48,733 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:12:48,733 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:48,733 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:48,734 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:12:48,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:48,741 INFO L85 PathProgramCache]: Analyzing trace with hash 909223006, now seen corresponding path program 1 times [2024-11-28 05:12:48,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:48,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177847704] [2024-11-28 05:12:48,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:48,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:49,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:49,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177847704] [2024-11-28 05:12:49,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177847704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:49,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:49,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:12:49,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362030836] [2024-11-28 05:12:49,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:49,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:12:49,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:49,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:12:49,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:12:49,179 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 05:12:49,182 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) [2024-11-28 05:12:49,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:49,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 05:12:49,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:12:49,679 INFO L124 PetriNetUnfolderBase]: 657/1292 cut-off events. [2024-11-28 05:12:49,679 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 05:12:49,687 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 8013 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. [2024-11-28 05:12:49,704 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 46 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2024-11-28 05:12:49,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 249 flow [2024-11-28 05:12:49,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:12:49,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:12:49,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-28 05:12:49,728 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2024-11-28 05:12:49,730 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 90 flow. Second operand 4 states and 135 transitions. [2024-11-28 05:12:49,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 249 flow [2024-11-28 05:12:49,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:12:49,745 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2024-11-28 05:12:49,749 INFO L262 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} [2024-11-28 05:12:49,755 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-11-28 05:12:49,755 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2024-11-28 05:12:49,755 INFO L472 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) [2024-11-28 05:12:49,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:49,755 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:49,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:12:49,756 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:12:49,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:49,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1884958881, now seen corresponding path program 1 times [2024-11-28 05:12:49,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:49,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157884542] [2024-11-28 05:12:49,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:49,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:49,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:49,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157884542] [2024-11-28 05:12:49,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157884542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:49,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:49,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:12:49,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56449962] [2024-11-28 05:12:49,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:49,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:12:49,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:49,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:12:49,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:12:49,916 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-28 05:12:49,917 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) [2024-11-28 05:12:49,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:49,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-28 05:12:49,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:12:50,356 INFO L124 PetriNetUnfolderBase]: 885/1603 cut-off events. [2024-11-28 05:12:50,356 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-11-28 05:12:50,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3411 conditions, 1603 events. 885/1603 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9945 event pairs, 213 based on Foata normal form. 74/1373 useless extension candidates. Maximal degree in co-relation 3395. Up to 785 conditions per place. [2024-11-28 05:12:50,376 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 55 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-11-28 05:12:50,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 75 transitions, 315 flow [2024-11-28 05:12:50,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:12:50,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:12:50,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-28 05:12:50,381 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2024-11-28 05:12:50,382 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 4 states and 135 transitions. [2024-11-28 05:12:50,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 75 transitions, 315 flow [2024-11-28 05:12:50,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 315 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:12:50,389 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 143 flow [2024-11-28 05:12:50,391 INFO L262 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} [2024-11-28 05:12:50,391 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2024-11-28 05:12:50,392 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 143 flow [2024-11-28 05:12:50,392 INFO L472 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) [2024-11-28 05:12:50,392 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:50,392 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:50,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:12:50,393 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:12:50,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:50,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1859744604, now seen corresponding path program 1 times [2024-11-28 05:12:50,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:50,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449132316] [2024-11-28 05:12:50,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:50,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:50,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:50,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449132316] [2024-11-28 05:12:50,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449132316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:50,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:50,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 05:12:50,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911118688] [2024-11-28 05:12:50,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:50,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:12:50,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:50,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:12:50,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:12:50,548 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-28 05:12:50,549 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) [2024-11-28 05:12:50,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:50,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-28 05:12:50,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:12:51,008 INFO L124 PetriNetUnfolderBase]: 1133/2347 cut-off events. [2024-11-28 05:12:51,009 INFO L125 PetriNetUnfolderBase]: For 492/649 co-relation queries the response was YES. [2024-11-28 05:12:51,019 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 17378 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. [2024-11-28 05:12:51,038 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-11-28 05:12:51,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 66 transitions, 300 flow [2024-11-28 05:12:51,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:12:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:12:51,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-28 05:12:51,040 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-11-28 05:12:51,041 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 143 flow. Second operand 3 states and 102 transitions. [2024-11-28 05:12:51,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 66 transitions, 300 flow [2024-11-28 05:12:51,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:12:51,046 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 153 flow [2024-11-28 05:12:51,047 INFO L262 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} [2024-11-28 05:12:51,047 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2024-11-28 05:12:51,048 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 153 flow [2024-11-28 05:12:51,049 INFO L472 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) [2024-11-28 05:12:51,049 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:51,049 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:51,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:12:51,049 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:12:51,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:51,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1817508161, now seen corresponding path program 1 times [2024-11-28 05:12:51,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:51,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043691714] [2024-11-28 05:12:51,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:51,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:51,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:51,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043691714] [2024-11-28 05:12:51,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043691714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:51,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:51,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 05:12:51,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758810892] [2024-11-28 05:12:51,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:51,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:12:51,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:51,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:12:51,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:12:51,144 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-28 05:12:51,144 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) [2024-11-28 05:12:51,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:51,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-28 05:12:51,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:12:51,518 INFO L124 PetriNetUnfolderBase]: 1133/2310 cut-off events. [2024-11-28 05:12:51,518 INFO L125 PetriNetUnfolderBase]: For 616/773 co-relation queries the response was YES. [2024-11-28 05:12:51,524 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 16829 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. [2024-11-28 05:12:51,537 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-11-28 05:12:51,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 307 flow [2024-11-28 05:12:51,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:12:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:12:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-28 05:12:51,540 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-11-28 05:12:51,540 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 153 flow. Second operand 3 states and 102 transitions. [2024-11-28 05:12:51,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 307 flow [2024-11-28 05:12:51,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:12:51,543 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 159 flow [2024-11-28 05:12:51,543 INFO L262 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} [2024-11-28 05:12:51,544 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-11-28 05:12:51,544 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 159 flow [2024-11-28 05:12:51,546 INFO L472 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) [2024-11-28 05:12:51,546 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:51,546 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:51,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:12:51,546 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:12:51,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:51,548 INFO L85 PathProgramCache]: Analyzing trace with hash 524565913, now seen corresponding path program 1 times [2024-11-28 05:12:51,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:51,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901118834] [2024-11-28 05:12:51,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:51,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:51,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:51,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:51,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901118834] [2024-11-28 05:12:51,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901118834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:51,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:51,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:12:51,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357369389] [2024-11-28 05:12:51,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:51,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:12:51,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:51,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:12:51,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:12:51,659 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-28 05:12:51,659 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) [2024-11-28 05:12:51,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:51,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-28 05:12:51,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:12:52,168 INFO L124 PetriNetUnfolderBase]: 2065/3705 cut-off events. [2024-11-28 05:12:52,168 INFO L125 PetriNetUnfolderBase]: For 1351/1765 co-relation queries the response was YES. [2024-11-28 05:12:52,178 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 26275 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. [2024-11-28 05:12:52,200 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 60 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-11-28 05:12:52,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 399 flow [2024-11-28 05:12:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:12:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:12:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-11-28 05:12:52,201 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7443181818181818 [2024-11-28 05:12:52,201 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 159 flow. Second operand 4 states and 131 transitions. [2024-11-28 05:12:52,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 399 flow [2024-11-28 05:12:52,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:12:52,205 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 179 flow [2024-11-28 05:12:52,206 INFO L262 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} [2024-11-28 05:12:52,209 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2024-11-28 05:12:52,209 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 179 flow [2024-11-28 05:12:52,209 INFO L472 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) [2024-11-28 05:12:52,209 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:52,209 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:52,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:12:52,209 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:12:52,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:52,210 INFO L85 PathProgramCache]: Analyzing trace with hash 508178424, now seen corresponding path program 1 times [2024-11-28 05:12:52,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:52,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131781272] [2024-11-28 05:12:52,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:52,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:52,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:52,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131781272] [2024-11-28 05:12:52,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131781272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:52,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:52,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:12:52,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620953703] [2024-11-28 05:12:52,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:52,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:12:52,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:52,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:12:52,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:12:52,310 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 05:12:52,311 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) [2024-11-28 05:12:52,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:52,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 05:12:52,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:12:52,771 INFO L124 PetriNetUnfolderBase]: 1601/3211 cut-off events. [2024-11-28 05:12:52,771 INFO L125 PetriNetUnfolderBase]: For 1181/1660 co-relation queries the response was YES. [2024-11-28 05:12:52,779 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 222. Compared 24158 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. [2024-11-28 05:12:52,804 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2024-11-28 05:12:52,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 445 flow [2024-11-28 05:12:52,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:12:52,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:12:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-11-28 05:12:52,807 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2024-11-28 05:12:52,807 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 179 flow. Second operand 4 states and 133 transitions. [2024-11-28 05:12:52,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 445 flow [2024-11-28 05:12:52,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:12:52,812 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 197 flow [2024-11-28 05:12:52,813 INFO L262 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} [2024-11-28 05:12:52,814 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2024-11-28 05:12:52,814 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 197 flow [2024-11-28 05:12:52,815 INFO L472 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) [2024-11-28 05:12:52,815 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:52,815 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:52,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:12:52,815 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:12:52,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:52,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1918001418, now seen corresponding path program 1 times [2024-11-28 05:12:52,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:52,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082913777] [2024-11-28 05:12:52,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:52,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:52,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:52,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082913777] [2024-11-28 05:12:52,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082913777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:52,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:52,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:12:52,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856428944] [2024-11-28 05:12:52,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:52,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:12:52,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:52,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:12:52,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:12:52,958 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 05:12:52,958 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) [2024-11-28 05:12:52,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:52,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 05:12:52,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:12:53,316 INFO L124 PetriNetUnfolderBase]: 1121/2194 cut-off events. [2024-11-28 05:12:53,317 INFO L125 PetriNetUnfolderBase]: For 1435/1771 co-relation queries the response was YES. [2024-11-28 05:12:53,324 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 14688 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. [2024-11-28 05:12:53,338 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-11-28 05:12:53,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 499 flow [2024-11-28 05:12:53,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:12:53,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:12:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-11-28 05:12:53,340 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2024-11-28 05:12:53,342 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 197 flow. Second operand 5 states and 161 transitions. [2024-11-28 05:12:53,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 499 flow [2024-11-28 05:12:53,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 489 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:12:53,347 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 217 flow [2024-11-28 05:12:53,347 INFO L262 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} [2024-11-28 05:12:53,351 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2024-11-28 05:12:53,352 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 217 flow [2024-11-28 05:12:53,352 INFO L472 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) [2024-11-28 05:12:53,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:53,352 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:53,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:12:53,353 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:12:53,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:53,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1478940209, now seen corresponding path program 1 times [2024-11-28 05:12:53,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:53,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123520452] [2024-11-28 05:12:53,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:53,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:53,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:53,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123520452] [2024-11-28 05:12:53,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123520452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:53,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:53,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:12:53,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139162459] [2024-11-28 05:12:53,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:53,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:12:53,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:53,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:12:53,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:12:53,496 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 05:12:53,498 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) [2024-11-28 05:12:53,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:53,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 05:12:53,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:12:53,897 INFO L124 PetriNetUnfolderBase]: 1167/2323 cut-off events. [2024-11-28 05:12:53,898 INFO L125 PetriNetUnfolderBase]: For 1787/2055 co-relation queries the response was YES. [2024-11-28 05:12:53,905 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 15958 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. [2024-11-28 05:12:53,918 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2024-11-28 05:12:53,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 520 flow [2024-11-28 05:12:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:12:53,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:12:53,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-11-28 05:12:53,920 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2024-11-28 05:12:53,920 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 217 flow. Second operand 5 states and 162 transitions. [2024-11-28 05:12:53,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 520 flow [2024-11-28 05:12:53,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 509 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 05:12:53,928 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 242 flow [2024-11-28 05:12:53,931 INFO L262 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} [2024-11-28 05:12:53,931 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-11-28 05:12:53,931 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 242 flow [2024-11-28 05:12:53,932 INFO L472 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) [2024-11-28 05:12:53,932 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:53,932 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:53,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:12:53,932 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:12:53,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:53,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1334785602, now seen corresponding path program 1 times [2024-11-28 05:12:53,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:53,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633779102] [2024-11-28 05:12:53,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:53,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:54,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:54,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:54,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633779102] [2024-11-28 05:12:54,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633779102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:54,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:54,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:12:54,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118842843] [2024-11-28 05:12:54,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:54,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:12:54,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:54,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:12:54,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:12:54,056 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 05:12:54,057 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) [2024-11-28 05:12:54,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:54,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 05:12:54,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:12:54,372 INFO L124 PetriNetUnfolderBase]: 1041/2085 cut-off events. [2024-11-28 05:12:54,372 INFO L125 PetriNetUnfolderBase]: For 2141/2382 co-relation queries the response was YES. [2024-11-28 05:12:54,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6217 conditions, 2085 events. 1041/2085 cut-off events. For 2141/2382 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14132 event pairs, 265 based on Foata normal form. 77/2033 useless extension candidates. Maximal degree in co-relation 6183. Up to 1215 conditions per place. [2024-11-28 05:12:54,387 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 53 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2024-11-28 05:12:54,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 78 transitions, 454 flow [2024-11-28 05:12:54,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:12:54,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:12:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-11-28 05:12:54,388 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6727272727272727 [2024-11-28 05:12:54,389 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 242 flow. Second operand 5 states and 148 transitions. [2024-11-28 05:12:54,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 78 transitions, 454 flow [2024-11-28 05:12:54,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 439 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-28 05:12:54,394 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 243 flow [2024-11-28 05:12:54,394 INFO L262 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=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2024-11-28 05:12:54,395 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2024-11-28 05:12:54,395 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 243 flow [2024-11-28 05:12:54,395 INFO L472 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) [2024-11-28 05:12:54,395 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:54,395 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:54,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:12:54,395 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:12:54,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:54,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1334785601, now seen corresponding path program 1 times [2024-11-28 05:12:54,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:54,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429185016] [2024-11-28 05:12:54,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:54,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:54,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:54,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429185016] [2024-11-28 05:12:54,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429185016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:54,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:54,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:12:54,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228818367] [2024-11-28 05:12:54,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:54,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:12:54,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:54,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:12:54,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:12:54,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 05:12:54,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 243 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) [2024-11-28 05:12:54,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:54,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 05:12:54,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:12:54,857 INFO L124 PetriNetUnfolderBase]: 1083/2162 cut-off events. [2024-11-28 05:12:54,857 INFO L125 PetriNetUnfolderBase]: For 2515/2765 co-relation queries the response was YES. [2024-11-28 05:12:54,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6506 conditions, 2162 events. 1083/2162 cut-off events. For 2515/2765 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14627 event pairs, 258 based on Foata normal form. 77/2159 useless extension candidates. Maximal degree in co-relation 6471. Up to 1229 conditions per place. [2024-11-28 05:12:54,872 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2024-11-28 05:12:54,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 524 flow [2024-11-28 05:12:54,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:12:54,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:12:54,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-11-28 05:12:54,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7181818181818181 [2024-11-28 05:12:54,873 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 243 flow. Second operand 5 states and 158 transitions. [2024-11-28 05:12:54,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 524 flow [2024-11-28 05:12:54,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 89 transitions, 510 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 05:12:54,878 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 265 flow [2024-11-28 05:12:54,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-11-28 05:12:54,879 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2024-11-28 05:12:54,879 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 265 flow [2024-11-28 05:12:54,879 INFO L472 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) [2024-11-28 05:12:54,879 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:54,879 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:54,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 05:12:54,880 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:12:54,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:54,880 INFO L85 PathProgramCache]: Analyzing trace with hash -978726487, now seen corresponding path program 1 times [2024-11-28 05:12:54,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:54,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214567520] [2024-11-28 05:12:54,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:54,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:54,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:54,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214567520] [2024-11-28 05:12:54,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214567520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:12:54,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119295653] [2024-11-28 05:12:54,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:54,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:54,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:12:54,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:12:54,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:12:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:55,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:12:55,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:12:55,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:55,118 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:12:55,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119295653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:55,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:12:55,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-28 05:12:55,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126252303] [2024-11-28 05:12:55,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:55,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:12:55,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:55,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:12:55,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:12:55,133 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-28 05:12:55,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 265 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) [2024-11-28 05:12:55,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:55,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-28 05:12:55,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:12:55,585 INFO L124 PetriNetUnfolderBase]: 1453/2648 cut-off events. [2024-11-28 05:12:55,588 INFO L125 PetriNetUnfolderBase]: For 4238/4654 co-relation queries the response was YES. [2024-11-28 05:12:55,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8412 conditions, 2648 events. 1453/2648 cut-off events. For 4238/4654 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 17594 event pairs, 311 based on Foata normal form. 134/2677 useless extension candidates. Maximal degree in co-relation 8379. Up to 1048 conditions per place. [2024-11-28 05:12:55,611 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 84 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2024-11-28 05:12:55,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 683 flow [2024-11-28 05:12:55,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:12:55,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:12:55,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-11-28 05:12:55,613 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2024-11-28 05:12:55,613 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 265 flow. Second operand 6 states and 182 transitions. [2024-11-28 05:12:55,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 683 flow [2024-11-28 05:12:55,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 107 transitions, 672 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 05:12:55,622 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 260 flow [2024-11-28 05:12:55,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=69, 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=260, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2024-11-28 05:12:55,623 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2024-11-28 05:12:55,623 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 260 flow [2024-11-28 05:12:55,623 INFO L472 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) [2024-11-28 05:12:55,623 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:55,623 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:55,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:12:55,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:55,825 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:12:55,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:55,825 INFO L85 PathProgramCache]: Analyzing trace with hash -615979462, now seen corresponding path program 1 times [2024-11-28 05:12:55,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:55,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4281699] [2024-11-28 05:12:55,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:55,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:55,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:55,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4281699] [2024-11-28 05:12:55,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4281699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:12:55,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42482829] [2024-11-28 05:12:55,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:55,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:55,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:12:55,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:12:55,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:12:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:55,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:12:55,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:12:56,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:56,106 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:12:56,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42482829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:56,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:12:56,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-28 05:12:56,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640409447] [2024-11-28 05:12:56,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:56,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:12:56,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:56,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:12:56,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:12:56,118 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-28 05:12:56,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 260 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) [2024-11-28 05:12:56,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:56,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-28 05:12:56,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:12:56,449 INFO L124 PetriNetUnfolderBase]: 1083/2400 cut-off events. [2024-11-28 05:12:56,450 INFO L125 PetriNetUnfolderBase]: For 3857/4036 co-relation queries the response was YES. [2024-11-28 05:12:56,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7017 conditions, 2400 events. 1083/2400 cut-off events. For 3857/4036 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17819 event pairs, 187 based on Foata normal form. 119/2436 useless extension candidates. Maximal degree in co-relation 6984. Up to 1216 conditions per place. [2024-11-28 05:12:56,468 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 54 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2024-11-28 05:12:56,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 499 flow [2024-11-28 05:12:56,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:12:56,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:12:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-28 05:12:56,470 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-11-28 05:12:56,470 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 260 flow. Second operand 4 states and 120 transitions. [2024-11-28 05:12:56,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 499 flow [2024-11-28 05:12:56,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 493 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 05:12:56,477 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 255 flow [2024-11-28 05:12:56,477 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=70, 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=255, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2024-11-28 05:12:56,480 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2024-11-28 05:12:56,480 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 255 flow [2024-11-28 05:12:56,481 INFO L472 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) [2024-11-28 05:12:56,481 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:56,481 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:56,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:12:56,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:56,685 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:12:56,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:56,686 INFO L85 PathProgramCache]: Analyzing trace with hash -275749701, now seen corresponding path program 1 times [2024-11-28 05:12:56,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:56,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884682714] [2024-11-28 05:12:56,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:56,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:12:56,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:56,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884682714] [2024-11-28 05:12:56,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884682714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:56,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:56,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:12:56,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977663902] [2024-11-28 05:12:56,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:56,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:12:56,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:56,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:12:56,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:12:56,752 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2024-11-28 05:12:56,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 255 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) [2024-11-28 05:12:56,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:56,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2024-11-28 05:12:56,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:12:57,224 INFO L124 PetriNetUnfolderBase]: 1611/2958 cut-off events. [2024-11-28 05:12:57,224 INFO L125 PetriNetUnfolderBase]: For 4733/5006 co-relation queries the response was YES. [2024-11-28 05:12:57,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9391 conditions, 2958 events. 1611/2958 cut-off events. For 4733/5006 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 19787 event pairs, 774 based on Foata normal form. 127/3016 useless extension candidates. Maximal degree in co-relation 9358. Up to 1547 conditions per place. [2024-11-28 05:12:57,254 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 68 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2024-11-28 05:12:57,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 90 transitions, 577 flow [2024-11-28 05:12:57,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:12:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:12:57,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-28 05:12:57,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2024-11-28 05:12:57,256 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 255 flow. Second operand 4 states and 124 transitions. [2024-11-28 05:12:57,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 90 transitions, 577 flow [2024-11-28 05:12:57,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 90 transitions, 568 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-28 05:12:57,266 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 264 flow [2024-11-28 05:12:57,267 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=69, 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=264, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2024-11-28 05:12:57,267 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2024-11-28 05:12:57,267 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 264 flow [2024-11-28 05:12:57,267 INFO L472 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) [2024-11-28 05:12:57,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:57,268 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:57,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 05:12:57,268 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:12:57,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:57,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1915493853, now seen corresponding path program 1 times [2024-11-28 05:12:57,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:57,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17631491] [2024-11-28 05:12:57,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:57,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:57,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:57,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17631491] [2024-11-28 05:12:57,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17631491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:12:57,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837801269] [2024-11-28 05:12:57,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:57,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:57,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:12:57,378 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:12:57,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:12:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:57,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:12:57,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:12:57,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:57,627 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:12:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:57,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837801269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:12:57,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:12:57,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-28 05:12:57,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648609557] [2024-11-28 05:12:57,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:12:57,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:12:57,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:57,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:12:57,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:12:57,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 05:12:57,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 264 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) [2024-11-28 05:12:57,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:57,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 05:12:57,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:12:58,966 INFO L124 PetriNetUnfolderBase]: 2907/6187 cut-off events. [2024-11-28 05:12:58,966 INFO L125 PetriNetUnfolderBase]: For 11200/11652 co-relation queries the response was YES. [2024-11-28 05:12:58,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17977 conditions, 6187 events. 2907/6187 cut-off events. For 11200/11652 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 50750 event pairs, 187 based on Foata normal form. 370/6492 useless extension candidates. Maximal degree in co-relation 17944. Up to 1217 conditions per place. [2024-11-28 05:12:59,020 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 129 selfloop transitions, 5 changer transitions 0/153 dead transitions. [2024-11-28 05:12:59,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 153 transitions, 1102 flow [2024-11-28 05:12:59,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:12:59,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:12:59,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-11-28 05:12:59,022 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7840909090909091 [2024-11-28 05:12:59,022 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 264 flow. Second operand 6 states and 207 transitions. [2024-11-28 05:12:59,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 153 transitions, 1102 flow [2024-11-28 05:12:59,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 153 transitions, 1086 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:12:59,033 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 292 flow [2024-11-28 05:12:59,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=71, 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=292, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2024-11-28 05:12:59,034 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2024-11-28 05:12:59,034 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 292 flow [2024-11-28 05:12:59,034 INFO L472 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) [2024-11-28 05:12:59,034 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:59,034 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:59,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:12:59,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 05:12:59,235 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:12:59,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:59,236 INFO L85 PathProgramCache]: Analyzing trace with hash -84325124, now seen corresponding path program 1 times [2024-11-28 05:12:59,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:59,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112731739] [2024-11-28 05:12:59,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:59,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:59,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:59,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112731739] [2024-11-28 05:12:59,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112731739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:12:59,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243768350] [2024-11-28 05:12:59,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:59,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:59,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:12:59,337 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:12:59,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:12:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:59,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:12:59,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:12:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:59,471 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:12:59,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243768350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:59,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:12:59,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-28 05:12:59,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213021318] [2024-11-28 05:12:59,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:59,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:12:59,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:59,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:12:59,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:12:59,491 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-28 05:12:59,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 292 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) [2024-11-28 05:12:59,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:59,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-28 05:12:59,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:13:00,588 INFO L124 PetriNetUnfolderBase]: 3691/6634 cut-off events. [2024-11-28 05:13:00,588 INFO L125 PetriNetUnfolderBase]: For 13310/13724 co-relation queries the response was YES. [2024-11-28 05:13:00,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21777 conditions, 6634 events. 3691/6634 cut-off events. For 13310/13724 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 48496 event pairs, 815 based on Foata normal form. 162/6562 useless extension candidates. Maximal degree in co-relation 21740. Up to 2628 conditions per place. [2024-11-28 05:13:00,653 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 90 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2024-11-28 05:13:00,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 111 transitions, 797 flow [2024-11-28 05:13:00,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:13:00,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:13:00,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-11-28 05:13:00,655 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 05:13:00,655 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 292 flow. Second operand 6 states and 176 transitions. [2024-11-28 05:13:00,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 111 transitions, 797 flow [2024-11-28 05:13:00,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 111 transitions, 755 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-11-28 05:13:00,677 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 286 flow [2024-11-28 05:13:00,677 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=76, 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=286, PETRI_PLACES=81, PETRI_TRANSITIONS=56} [2024-11-28 05:13:00,678 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2024-11-28 05:13:00,678 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 286 flow [2024-11-28 05:13:00,679 INFO L472 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) [2024-11-28 05:13:00,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:13:00,680 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:00,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:13:00,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 05:13:00,881 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:13:00,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:00,882 INFO L85 PathProgramCache]: Analyzing trace with hash 749232982, now seen corresponding path program 1 times [2024-11-28 05:13:00,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:00,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64095932] [2024-11-28 05:13:00,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:00,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:00,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:00,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:00,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64095932] [2024-11-28 05:13:00,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64095932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:00,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843487088] [2024-11-28 05:13:00,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:00,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:00,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:00,981 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:00,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:13:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:01,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:13:01,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:01,108 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:13:01,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843487088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:01,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:13:01,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-28 05:13:01,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979471729] [2024-11-28 05:13:01,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:01,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:13:01,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:01,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:13:01,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:13:01,120 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-28 05:13:01,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 56 transitions, 286 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) [2024-11-28 05:13:01,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:13:01,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-28 05:13:01,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:13:01,966 INFO L124 PetriNetUnfolderBase]: 3819/6572 cut-off events. [2024-11-28 05:13:01,966 INFO L125 PetriNetUnfolderBase]: For 13810/14017 co-relation queries the response was YES. [2024-11-28 05:13:01,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22085 conditions, 6572 events. 3819/6572 cut-off events. For 13810/14017 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 45194 event pairs, 1663 based on Foata normal form. 228/6431 useless extension candidates. Maximal degree in co-relation 22048. Up to 3155 conditions per place. [2024-11-28 05:13:02,022 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 53 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2024-11-28 05:13:02,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 539 flow [2024-11-28 05:13:02,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:13:02,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:13:02,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-28 05:13:02,024 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6420454545454546 [2024-11-28 05:13:02,024 INFO L175 Difference]: Start difference. First operand has 81 places, 56 transitions, 286 flow. Second operand 4 states and 113 transitions. [2024-11-28 05:13:02,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 539 flow [2024-11-28 05:13:02,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 533 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 05:13:02,048 INFO L231 Difference]: Finished difference. Result has 80 places, 55 transitions, 293 flow [2024-11-28 05:13:02,048 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=77, 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=293, PETRI_PLACES=80, PETRI_TRANSITIONS=55} [2024-11-28 05:13:02,049 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 34 predicate places. [2024-11-28 05:13:02,049 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 55 transitions, 293 flow [2024-11-28 05:13:02,049 INFO L472 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) [2024-11-28 05:13:02,049 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:13:02,049 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:02,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 05:13:02,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:02,254 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:13:02,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:02,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1844784054, now seen corresponding path program 1 times [2024-11-28 05:13:02,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:02,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050409321] [2024-11-28 05:13:02,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:02,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:02,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:02,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:02,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050409321] [2024-11-28 05:13:02,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050409321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:02,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711786374] [2024-11-28 05:13:02,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:02,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:02,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:02,352 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:02,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:13:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:02,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:13:02,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:02,611 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:13:02,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711786374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:02,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:13:02,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-28 05:13:02,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989211630] [2024-11-28 05:13:02,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:02,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:13:02,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:02,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:13:02,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:13:02,634 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 05:13:02,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 55 transitions, 293 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) [2024-11-28 05:13:02,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:13:02,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 05:13:02,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:13:03,348 INFO L124 PetriNetUnfolderBase]: 3259/6208 cut-off events. [2024-11-28 05:13:03,348 INFO L125 PetriNetUnfolderBase]: For 14520/14830 co-relation queries the response was YES. [2024-11-28 05:13:03,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21119 conditions, 6208 events. 3259/6208 cut-off events. For 14520/14830 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 46260 event pairs, 737 based on Foata normal form. 360/6483 useless extension candidates. Maximal degree in co-relation 21080. Up to 2388 conditions per place. [2024-11-28 05:13:03,401 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 67 selfloop transitions, 9 changer transitions 0/92 dead transitions. [2024-11-28 05:13:03,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 92 transitions, 659 flow [2024-11-28 05:13:03,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:13:03,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:13:03,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2024-11-28 05:13:03,403 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6553030303030303 [2024-11-28 05:13:03,403 INFO L175 Difference]: Start difference. First operand has 80 places, 55 transitions, 293 flow. Second operand 6 states and 173 transitions. [2024-11-28 05:13:03,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 92 transitions, 659 flow [2024-11-28 05:13:03,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 92 transitions, 612 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 05:13:03,429 INFO L231 Difference]: Finished difference. Result has 81 places, 55 transitions, 305 flow [2024-11-28 05:13:03,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=81, PETRI_TRANSITIONS=55} [2024-11-28 05:13:03,430 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2024-11-28 05:13:03,430 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 55 transitions, 305 flow [2024-11-28 05:13:03,430 INFO L472 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) [2024-11-28 05:13:03,430 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:13:03,431 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:03,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 05:13:03,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 05:13:03,632 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:13:03,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:03,634 INFO L85 PathProgramCache]: Analyzing trace with hash 397023509, now seen corresponding path program 1 times [2024-11-28 05:13:03,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:03,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891311177] [2024-11-28 05:13:03,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:03,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:03,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:03,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891311177] [2024-11-28 05:13:03,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891311177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:03,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986126392] [2024-11-28 05:13:03,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:03,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:03,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:03,767 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:03,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:13:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:03,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:13:03,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:03,994 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:13:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:04,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986126392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:13:04,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:13:04,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-28 05:13:04,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789619861] [2024-11-28 05:13:04,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:13:04,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 05:13:04,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:04,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 05:13:04,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:13:04,169 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 05:13:04,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 55 transitions, 305 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) [2024-11-28 05:13:04,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:13:04,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 05:13:04,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:13:07,119 INFO L124 PetriNetUnfolderBase]: 9393/18778 cut-off events. [2024-11-28 05:13:07,119 INFO L125 PetriNetUnfolderBase]: For 50201/51140 co-relation queries the response was YES. [2024-11-28 05:13:07,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63381 conditions, 18778 events. 9393/18778 cut-off events. For 50201/51140 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 170182 event pairs, 503 based on Foata normal form. 1298/19983 useless extension candidates. Maximal degree in co-relation 63340. Up to 3943 conditions per place. [2024-11-28 05:13:07,230 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 327 selfloop transitions, 47 changer transitions 0/390 dead transitions. [2024-11-28 05:13:07,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 390 transitions, 2826 flow [2024-11-28 05:13:07,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 05:13:07,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-28 05:13:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 751 transitions. [2024-11-28 05:13:07,233 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7111742424242424 [2024-11-28 05:13:07,233 INFO L175 Difference]: Start difference. First operand has 81 places, 55 transitions, 305 flow. Second operand 24 states and 751 transitions. [2024-11-28 05:13:07,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 390 transitions, 2826 flow [2024-11-28 05:13:07,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 390 transitions, 2777 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-11-28 05:13:07,310 INFO L231 Difference]: Finished difference. Result has 114 places, 95 transitions, 863 flow [2024-11-28 05:13:07,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=294, 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=24, PETRI_FLOW=863, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2024-11-28 05:13:07,310 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 68 predicate places. [2024-11-28 05:13:07,310 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 863 flow [2024-11-28 05:13:07,311 INFO L472 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) [2024-11-28 05:13:07,311 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:13:07,311 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:07,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 05:13:07,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 05:13:07,512 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:13:07,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:07,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1680888787, now seen corresponding path program 1 times [2024-11-28 05:13:07,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:07,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702674407] [2024-11-28 05:13:07,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:07,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:07,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:13:07,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:07,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702674407] [2024-11-28 05:13:07,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702674407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:07,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:07,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:13:07,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719382730] [2024-11-28 05:13:07,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:07,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:13:07,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:07,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:13:07,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:13:07,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2024-11-28 05:13:07,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 863 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) [2024-11-28 05:13:07,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:13:07,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2024-11-28 05:13:07,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:13:10,883 INFO L124 PetriNetUnfolderBase]: 14883/25342 cut-off events. [2024-11-28 05:13:10,883 INFO L125 PetriNetUnfolderBase]: For 178253/179318 co-relation queries the response was YES. [2024-11-28 05:13:10,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105391 conditions, 25342 events. 14883/25342 cut-off events. For 178253/179318 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 211039 event pairs, 5592 based on Foata normal form. 864/25811 useless extension candidates. Maximal degree in co-relation 105338. Up to 11443 conditions per place. [2024-11-28 05:13:11,221 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 145 selfloop transitions, 6 changer transitions 0/165 dead transitions. [2024-11-28 05:13:11,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 165 transitions, 1791 flow [2024-11-28 05:13:11,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:13:11,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:13:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-28 05:13:11,223 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-11-28 05:13:11,223 INFO L175 Difference]: Start difference. First operand has 114 places, 95 transitions, 863 flow. Second operand 4 states and 116 transitions. [2024-11-28 05:13:11,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 165 transitions, 1791 flow [2024-11-28 05:13:11,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 165 transitions, 1457 flow, removed 130 selfloop flow, removed 9 redundant places. [2024-11-28 05:13:11,716 INFO L231 Difference]: Finished difference. Result has 108 places, 95 transitions, 681 flow [2024-11-28 05:13:11,717 INFO L262 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} [2024-11-28 05:13:11,717 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2024-11-28 05:13:11,718 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 95 transitions, 681 flow [2024-11-28 05:13:11,718 INFO L472 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) [2024-11-28 05:13:11,718 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:13:11,718 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:11,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 05:13:11,718 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:13:11,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:11,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1751386274, now seen corresponding path program 1 times [2024-11-28 05:13:11,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:11,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699107992] [2024-11-28 05:13:11,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:11,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:13:11,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:11,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699107992] [2024-11-28 05:13:11,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699107992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:13:11,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:13:11,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:13:11,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76844912] [2024-11-28 05:13:11,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:13:11,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:13:11,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:11,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:13:11,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:13:11,766 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-28 05:13:11,766 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) [2024-11-28 05:13:11,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:13:11,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-28 05:13:11,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:13:14,410 INFO L124 PetriNetUnfolderBase]: 11993/21452 cut-off events. [2024-11-28 05:13:14,410 INFO L125 PetriNetUnfolderBase]: For 186734/186734 co-relation queries the response was YES. [2024-11-28 05:13:14,499 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 180334 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. [2024-11-28 05:13:14,567 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 194 selfloop transitions, 9 changer transitions 0/219 dead transitions. [2024-11-28 05:13:14,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 219 transitions, 2147 flow [2024-11-28 05:13:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:13:14,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:13:14,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-11-28 05:13:14,569 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6761363636363636 [2024-11-28 05:13:14,569 INFO L175 Difference]: Start difference. First operand has 108 places, 95 transitions, 681 flow. Second operand 4 states and 119 transitions. [2024-11-28 05:13:14,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 219 transitions, 2147 flow [2024-11-28 05:13:14,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 219 transitions, 2135 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:13:14,793 INFO L231 Difference]: Finished difference. Result has 109 places, 95 transitions, 695 flow [2024-11-28 05:13:14,793 INFO L262 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} [2024-11-28 05:13:14,794 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2024-11-28 05:13:14,794 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 95 transitions, 695 flow [2024-11-28 05:13:14,794 INFO L472 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) [2024-11-28 05:13:14,794 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:13:14,794 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:14,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 05:13:14,795 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:13:14,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:14,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1921771017, now seen corresponding path program 1 times [2024-11-28 05:13:14,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:14,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110249291] [2024-11-28 05:13:14,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:14,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:14,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:14,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110249291] [2024-11-28 05:13:14,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110249291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:14,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010097750] [2024-11-28 05:13:14,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:14,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:14,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:14,908 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:14,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:13:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:14,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:13:14,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:15,155 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:15,155 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:13:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:15,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010097750] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:13:15,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:13:15,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-28 05:13:15,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983840289] [2024-11-28 05:13:15,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:13:15,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 05:13:15,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:15,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 05:13:15,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:13:15,368 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 05:13:15,369 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) [2024-11-28 05:13:15,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:13:15,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 05:13:15,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:13:19,300 INFO L124 PetriNetUnfolderBase]: 13285/25710 cut-off events. [2024-11-28 05:13:19,300 INFO L125 PetriNetUnfolderBase]: For 259938/259938 co-relation queries the response was YES. [2024-11-28 05:13:19,426 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 236307 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. [2024-11-28 05:13:19,507 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 304 selfloop transitions, 54 changer transitions 0/374 dead transitions. [2024-11-28 05:13:19,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 374 transitions, 3182 flow [2024-11-28 05:13:19,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 05:13:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 05:13:19,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 652 transitions. [2024-11-28 05:13:19,513 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7056277056277056 [2024-11-28 05:13:19,513 INFO L175 Difference]: Start difference. First operand has 109 places, 95 transitions, 695 flow. Second operand 21 states and 652 transitions. [2024-11-28 05:13:19,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 374 transitions, 3182 flow [2024-11-28 05:13:20,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 374 transitions, 2962 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 05:13:20,197 INFO L231 Difference]: Finished difference. Result has 132 places, 116 transitions, 1083 flow [2024-11-28 05:13:20,198 INFO L262 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} [2024-11-28 05:13:20,198 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 86 predicate places. [2024-11-28 05:13:20,198 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 116 transitions, 1083 flow [2024-11-28 05:13:20,198 INFO L472 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) [2024-11-28 05:13:20,198 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:13:20,199 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:20,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 05:13:20,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 05:13:20,399 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:13:20,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:20,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2036726892, now seen corresponding path program 1 times [2024-11-28 05:13:20,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:20,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960044081] [2024-11-28 05:13:20,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:20,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:20,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:20,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:20,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960044081] [2024-11-28 05:13:20,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960044081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:20,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791259881] [2024-11-28 05:13:20,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:20,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:20,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:20,515 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:20,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:13:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:20,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 05:13:20,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:20,755 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:13:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:20,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791259881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:13:20,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:13:20,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-28 05:13:20,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114453604] [2024-11-28 05:13:20,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:13:20,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 05:13:20,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:20,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 05:13:20,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-11-28 05:13:20,965 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 05:13:20,966 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) [2024-11-28 05:13:20,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:13:20,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 05:13:20,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:13:30,229 INFO L124 PetriNetUnfolderBase]: 25129/48768 cut-off events. [2024-11-28 05:13:30,229 INFO L125 PetriNetUnfolderBase]: For 904612/904612 co-relation queries the response was YES. [2024-11-28 05:13:30,553 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 483026 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. [2024-11-28 05:13:30,793 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 521 selfloop transitions, 118 changer transitions 0/655 dead transitions. [2024-11-28 05:13:30,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 655 transitions, 5629 flow [2024-11-28 05:13:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 05:13:30,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-28 05:13:30,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1159 transitions. [2024-11-28 05:13:30,808 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.711916461916462 [2024-11-28 05:13:30,808 INFO L175 Difference]: Start difference. First operand has 132 places, 116 transitions, 1083 flow. Second operand 37 states and 1159 transitions. [2024-11-28 05:13:30,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 655 transitions, 5629 flow [2024-11-28 05:13:33,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 655 transitions, 5487 flow, removed 50 selfloop flow, removed 13 redundant places. [2024-11-28 05:13:33,273 INFO L231 Difference]: Finished difference. Result has 169 places, 174 transitions, 2082 flow [2024-11-28 05:13:33,274 INFO L262 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} [2024-11-28 05:13:33,274 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 123 predicate places. [2024-11-28 05:13:33,274 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 174 transitions, 2082 flow [2024-11-28 05:13:33,275 INFO L472 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) [2024-11-28 05:13:33,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:13:33,275 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:13:33,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 05:13:33,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 05:13:33,476 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 05:13:33,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:33,477 INFO L85 PathProgramCache]: Analyzing trace with hash -410393663, now seen corresponding path program 2 times [2024-11-28 05:13:33,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:33,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702837984] [2024-11-28 05:13:33,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:13:33,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:33,500 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:13:33,501 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:13:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:33,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:33,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702837984] [2024-11-28 05:13:33,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702837984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:33,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661555774] [2024-11-28 05:13:33,725 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:13:33,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:33,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:33,728 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:33,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38efdf83-7369-4107-9a56-d62bd104ba7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 05:13:33,809 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:13:33,810 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:13:33,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:13:33,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:34,021 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:34,022 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:13:34,184 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:13:34,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661555774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:13:34,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:13:34,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-28 05:13:34,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232202895] [2024-11-28 05:13:34,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:13:34,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 05:13:34,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:34,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 05:13:34,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:13:34,196 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-28 05:13:34,197 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) [2024-11-28 05:13:34,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:13:34,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-28 05:13:34,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand