./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack-2.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_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/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_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/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_0faaa576-19d3-4598-b2e1-9752ca178a1e/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 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:26:25,493 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:26:25,569 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 03:26:25,576 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:26:25,576 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:26:25,623 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:26:25,624 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:26:25,625 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:26:25,626 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:26:25,626 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:26:25,627 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:26:25,628 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:26:25,629 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:26:25,629 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:26:25,630 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:26:25,630 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:26:25,630 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:26:25,630 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:26:25,630 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:26:25,631 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:26:25,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:26:25,631 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:26:25,631 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:26:25,632 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:26:25,632 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 03:26:25,632 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:26:25,632 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:26:25,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:26:25,632 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:26:25,632 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:26:25,633 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:26:25,634 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:26:25,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:26:25,634 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:26:25,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:25,634 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:26:25,635 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:26:25,635 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:26:25,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:26:25,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:25,635 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:26:25,635 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:26:25,635 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:26:25,636 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:26:25,636 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:26:25,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:26:25,636 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:26:25,636 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:26:25,636 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:26:25,636 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:26:25,636 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_0faaa576-19d3-4598-b2e1-9752ca178a1e/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 -> 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 [2024-11-28 03:26:26,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:26:26,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:26:26,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:26:26,089 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:26:26,089 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:26:26,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/stack-2.i [2024-11-28 03:26:29,432 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/data/71e41d2f8/6e0248e5ae97452085ef6f7f78dd6c12/FLAGe5fce9902 [2024-11-28 03:26:29,850 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:26:29,851 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/sv-benchmarks/c/pthread/stack-2.i [2024-11-28 03:26:29,875 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/data/71e41d2f8/6e0248e5ae97452085ef6f7f78dd6c12/FLAGe5fce9902 [2024-11-28 03:26:29,894 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/data/71e41d2f8/6e0248e5ae97452085ef6f7f78dd6c12 [2024-11-28 03:26:29,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:26:29,899 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:26:29,901 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:26:29,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:26:29,907 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:26:29,908 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:26:29" (1/1) ... [2024-11-28 03:26:29,909 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332dbce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:29, skipping insertion in model container [2024-11-28 03:26:29,909 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:26:29" (1/1) ... [2024-11-28 03:26:29,971 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:26:30,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:26:30,612 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:26:30,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:26:30,805 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:26:30,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:30 WrapperNode [2024-11-28 03:26:30,808 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:26:30,809 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:26:30,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:26:30,811 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:26:30,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:30" (1/1) ... [2024-11-28 03:26:30,847 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:30" (1/1) ... [2024-11-28 03:26:30,893 INFO L138 Inliner]: procedures = 277, calls = 37, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 167 [2024-11-28 03:26:30,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:26:30,894 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:26:30,894 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:26:30,894 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:26:30,908 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:30" (1/1) ... [2024-11-28 03:26:30,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:30" (1/1) ... [2024-11-28 03:26:30,914 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:30" (1/1) ... [2024-11-28 03:26:30,948 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 7, 5]. 50 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 1 writes are split as follows [0, 1, 0]. [2024-11-28 03:26:30,952 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:30" (1/1) ... [2024-11-28 03:26:30,952 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:30" (1/1) ... [2024-11-28 03:26:30,964 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:30" (1/1) ... [2024-11-28 03:26:30,970 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:30" (1/1) ... [2024-11-28 03:26:30,976 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:30" (1/1) ... [2024-11-28 03:26:30,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:30" (1/1) ... [2024-11-28 03:26:30,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:30" (1/1) ... [2024-11-28 03:26:30,982 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:26:30,983 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:26:30,983 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:26:30,983 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:26:30,985 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:30" (1/1) ... [2024-11-28 03:26:30,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:31,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:31,030 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:26:31,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:26:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-28 03:26:31,072 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-28 03:26:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-28 03:26:31,072 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-28 03:26:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 03:26:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:26:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:26:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:26:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:26:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:26:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:26:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 03:26:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:26:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:26:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:26:31,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:26:31,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:26:31,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:26:31,078 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 03:26:31,268 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:26:31,271 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:26:31,712 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:26:31,713 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:26:32,036 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:26:32,036 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:26:32,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:26:32 BoogieIcfgContainer [2024-11-28 03:26:32,037 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:26:32,039 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:26:32,041 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:26:32,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:26:32,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:26:29" (1/3) ... [2024-11-28 03:26:32,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a42f813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:26:32, skipping insertion in model container [2024-11-28 03:26:32,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:30" (2/3) ... [2024-11-28 03:26:32,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a42f813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:26:32, skipping insertion in model container [2024-11-28 03:26:32,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:26:32" (3/3) ... [2024-11-28 03:26:32,054 INFO L128 eAbstractionObserver]: Analyzing ICFG stack-2.i [2024-11-28 03:26:32,074 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:26:32,076 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack-2.i that has 3 procedures, 44 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2024-11-28 03:26:32,077 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:26:32,164 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 03:26:32,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2024-11-28 03:26:32,274 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-11-28 03:26:32,277 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 03:26:32,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 131 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-11-28 03:26:32,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2024-11-28 03:26:32,291 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2024-11-28 03:26:32,305 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:26:32,327 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;@4725e9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:26:32,327 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-28 03:26:32,344 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:26:32,345 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2024-11-28 03:26:32,345 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 03:26:32,345 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:32,346 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:32,346 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:32,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:32,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2009107799, now seen corresponding path program 1 times [2024-11-28 03:26:32,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:32,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121838825] [2024-11-28 03:26:32,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:32,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:32,885 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 03:26:32,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:32,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121838825] [2024-11-28 03:26:32,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121838825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:32,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:32,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:26:32,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759634258] [2024-11-28 03:26:32,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:32,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:26:32,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:32,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:26:32,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:26:32,967 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-28 03:26:32,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 03:26:32,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:32,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-28 03:26:32,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:33,630 INFO L124 PetriNetUnfolderBase]: 713/1403 cut-off events. [2024-11-28 03:26:33,630 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-11-28 03:26:33,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2599 conditions, 1403 events. 713/1403 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 7651 event pairs, 148 based on Foata normal form. 40/1281 useless extension candidates. Maximal degree in co-relation 2472. Up to 781 conditions per place. [2024-11-28 03:26:33,655 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 71 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-11-28 03:26:33,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 91 transitions, 354 flow [2024-11-28 03:26:33,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:26:33,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:26:33,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-11-28 03:26:33,678 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-11-28 03:26:33,682 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 5 states and 162 transitions. [2024-11-28 03:26:33,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 91 transitions, 354 flow [2024-11-28 03:26:33,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 91 transitions, 345 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:26:33,700 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 140 flow [2024-11-28 03:26:33,706 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2024-11-28 03:26:33,711 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2024-11-28 03:26:33,711 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 140 flow [2024-11-28 03:26:33,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 03:26:33,711 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:33,712 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:33,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:26:33,716 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:33,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:33,717 INFO L85 PathProgramCache]: Analyzing trace with hash -484288210, now seen corresponding path program 1 times [2024-11-28 03:26:33,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:33,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765296347] [2024-11-28 03:26:33,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:33,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:33,950 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 03:26:33,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:33,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765296347] [2024-11-28 03:26:33,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765296347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:33,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:33,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:26:33,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047778198] [2024-11-28 03:26:33,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:33,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:26:33,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:33,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:26:33,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:26:33,970 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-28 03:26:33,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 03:26:33,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:33,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-28 03:26:33,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:34,435 INFO L124 PetriNetUnfolderBase]: 751/1505 cut-off events. [2024-11-28 03:26:34,436 INFO L125 PetriNetUnfolderBase]: For 339/343 co-relation queries the response was YES. [2024-11-28 03:26:34,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3184 conditions, 1505 events. 751/1505 cut-off events. For 339/343 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8314 event pairs, 200 based on Foata normal form. 64/1439 useless extension candidates. Maximal degree in co-relation 2806. Up to 839 conditions per place. [2024-11-28 03:26:34,449 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 67 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2024-11-28 03:26:34,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 88 transitions, 388 flow [2024-11-28 03:26:34,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:26:34,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:26:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-11-28 03:26:34,453 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-28 03:26:34,454 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 140 flow. Second operand 5 states and 156 transitions. [2024-11-28 03:26:34,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 88 transitions, 388 flow [2024-11-28 03:26:34,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 88 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:26:34,464 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 188 flow [2024-11-28 03:26:34,465 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-11-28 03:26:34,466 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-11-28 03:26:34,466 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 188 flow [2024-11-28 03:26:34,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 03:26:34,467 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:34,469 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:34,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:26:34,469 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:34,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:34,470 INFO L85 PathProgramCache]: Analyzing trace with hash -2128063916, now seen corresponding path program 1 times [2024-11-28 03:26:34,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:34,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152178717] [2024-11-28 03:26:34,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:34,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:34,615 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 03:26:34,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:34,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152178717] [2024-11-28 03:26:34,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152178717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:34,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:34,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:26:34,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072922368] [2024-11-28 03:26:34,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:34,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:26:34,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:34,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:26:34,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:26:34,630 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-28 03:26:34,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 03:26:34,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:34,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-28 03:26:34,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:35,226 INFO L124 PetriNetUnfolderBase]: 1260/2473 cut-off events. [2024-11-28 03:26:35,226 INFO L125 PetriNetUnfolderBase]: For 1158/1166 co-relation queries the response was YES. [2024-11-28 03:26:35,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5723 conditions, 2473 events. 1260/2473 cut-off events. For 1158/1166 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 14949 event pairs, 538 based on Foata normal form. 68/2405 useless extension candidates. Maximal degree in co-relation 5221. Up to 1246 conditions per place. [2024-11-28 03:26:35,250 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 81 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-11-28 03:26:35,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 527 flow [2024-11-28 03:26:35,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:26:35,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:26:35,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-28 03:26:35,253 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-28 03:26:35,253 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 188 flow. Second operand 4 states and 132 transitions. [2024-11-28 03:26:35,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 527 flow [2024-11-28 03:26:35,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 98 transitions, 517 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:26:35,265 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 207 flow [2024-11-28 03:26:35,266 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-11-28 03:26:35,267 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2024-11-28 03:26:35,267 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 207 flow [2024-11-28 03:26:35,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 03:26:35,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:35,267 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:35,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:26:35,268 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:35,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:35,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1411157064, now seen corresponding path program 1 times [2024-11-28 03:26:35,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:35,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772832840] [2024-11-28 03:26:35,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:35,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:35,446 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 03:26:35,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:35,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772832840] [2024-11-28 03:26:35,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772832840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:35,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:35,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:26:35,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959438196] [2024-11-28 03:26:35,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:35,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:26:35,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:35,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:26:35,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:26:35,463 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-28 03:26:35,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 207 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 03:26:35,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:35,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-28 03:26:35,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:36,217 INFO L124 PetriNetUnfolderBase]: 1715/3260 cut-off events. [2024-11-28 03:26:36,217 INFO L125 PetriNetUnfolderBase]: For 1959/2131 co-relation queries the response was YES. [2024-11-28 03:26:36,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7908 conditions, 3260 events. 1715/3260 cut-off events. For 1959/2131 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 20111 event pairs, 633 based on Foata normal form. 106/3237 useless extension candidates. Maximal degree in co-relation 7140. Up to 1460 conditions per place. [2024-11-28 03:26:36,250 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 82 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-11-28 03:26:36,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 546 flow [2024-11-28 03:26:36,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:26:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:26:36,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-28 03:26:36,254 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-11-28 03:26:36,255 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 207 flow. Second operand 4 states and 134 transitions. [2024-11-28 03:26:36,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 546 flow [2024-11-28 03:26:36,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 99 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:26:36,270 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 229 flow [2024-11-28 03:26:36,271 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-11-28 03:26:36,271 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2024-11-28 03:26:36,272 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 229 flow [2024-11-28 03:26:36,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 03:26:36,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:36,273 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:36,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:26:36,273 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:36,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:36,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1018420353, now seen corresponding path program 1 times [2024-11-28 03:26:36,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:36,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654994451] [2024-11-28 03:26:36,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:36,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:36,469 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 03:26:36,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:36,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654994451] [2024-11-28 03:26:36,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654994451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:36,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:36,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:26:36,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627826764] [2024-11-28 03:26:36,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:36,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:26:36,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:36,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:26:36,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:26:36,473 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 03:26:36,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 03:26:36,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:36,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 03:26:36,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:36,857 INFO L124 PetriNetUnfolderBase]: 823/1825 cut-off events. [2024-11-28 03:26:36,858 INFO L125 PetriNetUnfolderBase]: For 1150/1226 co-relation queries the response was YES. [2024-11-28 03:26:36,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4525 conditions, 1825 events. 823/1825 cut-off events. For 1150/1226 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 10581 event pairs, 210 based on Foata normal form. 92/1886 useless extension candidates. Maximal degree in co-relation 4331. Up to 954 conditions per place. [2024-11-28 03:26:36,872 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 48 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-11-28 03:26:36,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 368 flow [2024-11-28 03:26:36,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:26:36,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:26:36,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-28 03:26:36,874 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 03:26:36,874 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 229 flow. Second operand 3 states and 96 transitions. [2024-11-28 03:26:36,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 368 flow [2024-11-28 03:26:36,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 352 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-28 03:26:36,896 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 193 flow [2024-11-28 03:26:36,896 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-11-28 03:26:36,901 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2024-11-28 03:26:36,901 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 193 flow [2024-11-28 03:26:36,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 03:26:36,903 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:36,903 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:36,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:26:36,903 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:36,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:36,904 INFO L85 PathProgramCache]: Analyzing trace with hash -781321172, now seen corresponding path program 1 times [2024-11-28 03:26:36,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:36,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249145739] [2024-11-28 03:26:36,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:36,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:37,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:37,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:37,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249145739] [2024-11-28 03:26:37,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249145739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:26:37,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448496506] [2024-11-28 03:26:37,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:37,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:37,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:37,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:37,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:26:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:37,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:26:37,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:37,353 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:37,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448496506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:37,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:26:37,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 03:26:37,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193648609] [2024-11-28 03:26:37,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:37,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:26:37,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:37,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:26:37,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:26:37,367 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-28 03:26:37,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 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 03:26:37,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:37,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-28 03:26:37,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:38,051 INFO L124 PetriNetUnfolderBase]: 1302/2777 cut-off events. [2024-11-28 03:26:38,051 INFO L125 PetriNetUnfolderBase]: For 1364/1474 co-relation queries the response was YES. [2024-11-28 03:26:38,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6869 conditions, 2777 events. 1302/2777 cut-off events. For 1364/1474 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 16998 event pairs, 273 based on Foata normal form. 18/2744 useless extension candidates. Maximal degree in co-relation 5597. Up to 906 conditions per place. [2024-11-28 03:26:38,076 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 97 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2024-11-28 03:26:38,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 120 transitions, 654 flow [2024-11-28 03:26:38,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:26:38,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:26:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2024-11-28 03:26:38,080 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-28 03:26:38,081 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 193 flow. Second operand 7 states and 203 transitions. [2024-11-28 03:26:38,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 120 transitions, 654 flow [2024-11-28 03:26:38,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 120 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:26:38,091 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 251 flow [2024-11-28 03:26:38,092 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2024-11-28 03:26:38,092 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2024-11-28 03:26:38,094 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 251 flow [2024-11-28 03:26:38,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 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 03:26:38,095 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:38,095 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:38,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:26:38,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:38,296 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:38,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:38,297 INFO L85 PathProgramCache]: Analyzing trace with hash -70519726, now seen corresponding path program 1 times [2024-11-28 03:26:38,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:38,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63076776] [2024-11-28 03:26:38,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:38,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:38,476 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 03:26:38,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:38,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63076776] [2024-11-28 03:26:38,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63076776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:38,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:38,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:26:38,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108267526] [2024-11-28 03:26:38,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:38,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:26:38,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:38,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:26:38,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:26:38,505 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-28 03:26:38,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:26:38,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:38,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-28 03:26:38,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:39,389 INFO L124 PetriNetUnfolderBase]: 1824/3777 cut-off events. [2024-11-28 03:26:39,389 INFO L125 PetriNetUnfolderBase]: For 2941/3113 co-relation queries the response was YES. [2024-11-28 03:26:39,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9793 conditions, 3777 events. 1824/3777 cut-off events. For 2941/3113 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 24276 event pairs, 351 based on Foata normal form. 26/3786 useless extension candidates. Maximal degree in co-relation 7956. Up to 1716 conditions per place. [2024-11-28 03:26:39,439 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 107 selfloop transitions, 10 changer transitions 0/129 dead transitions. [2024-11-28 03:26:39,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 129 transitions, 757 flow [2024-11-28 03:26:39,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:26:39,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:26:39,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-11-28 03:26:39,442 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5803571428571429 [2024-11-28 03:26:39,442 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 251 flow. Second operand 7 states and 195 transitions. [2024-11-28 03:26:39,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 129 transitions, 757 flow [2024-11-28 03:26:39,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 129 transitions, 748 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 03:26:39,455 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 318 flow [2024-11-28 03:26:39,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2024-11-28 03:26:39,456 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2024-11-28 03:26:39,457 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 318 flow [2024-11-28 03:26:39,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:26:39,457 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:39,457 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:39,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:26:39,457 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:39,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:39,459 INFO L85 PathProgramCache]: Analyzing trace with hash -552527779, now seen corresponding path program 1 times [2024-11-28 03:26:39,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:39,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441665369] [2024-11-28 03:26:39,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:39,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:39,634 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 03:26:39,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:39,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441665369] [2024-11-28 03:26:39,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441665369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:39,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:39,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:26:39,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062686732] [2024-11-28 03:26:39,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:39,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:26:39,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:39,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:26:39,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:26:39,664 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-28 03:26:39,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:26:39,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:39,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-28 03:26:39,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:40,664 INFO L124 PetriNetUnfolderBase]: 2301/4739 cut-off events. [2024-11-28 03:26:40,664 INFO L125 PetriNetUnfolderBase]: For 4939/5173 co-relation queries the response was YES. [2024-11-28 03:26:40,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12824 conditions, 4739 events. 2301/4739 cut-off events. For 4939/5173 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 32204 event pairs, 536 based on Foata normal form. 24/4736 useless extension candidates. Maximal degree in co-relation 9575. Up to 2363 conditions per place. [2024-11-28 03:26:40,704 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 108 selfloop transitions, 15 changer transitions 0/135 dead transitions. [2024-11-28 03:26:40,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 135 transitions, 848 flow [2024-11-28 03:26:40,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:26:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 03:26:40,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-11-28 03:26:40,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-11-28 03:26:40,707 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 318 flow. Second operand 8 states and 210 transitions. [2024-11-28 03:26:40,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 135 transitions, 848 flow [2024-11-28 03:26:40,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 135 transitions, 839 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 03:26:40,727 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 410 flow [2024-11-28 03:26:40,728 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=410, PETRI_PLACES=85, PETRI_TRANSITIONS=67} [2024-11-28 03:26:40,729 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2024-11-28 03:26:40,730 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 410 flow [2024-11-28 03:26:40,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:26:40,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:40,731 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:40,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:26:40,732 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:40,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:40,733 INFO L85 PathProgramCache]: Analyzing trace with hash 647978986, now seen corresponding path program 1 times [2024-11-28 03:26:40,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:40,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089480506] [2024-11-28 03:26:40,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:40,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:40,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:40,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089480506] [2024-11-28 03:26:40,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089480506] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:26:40,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430804224] [2024-11-28 03:26:40,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:40,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:40,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:40,904 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:40,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:26:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:41,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:26:41,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:41,121 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:41,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430804224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:41,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:26:41,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-28 03:26:41,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497934327] [2024-11-28 03:26:41,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:41,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:26:41,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:41,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:26:41,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:26:41,139 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 03:26:41,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 67 transitions, 410 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 03:26:41,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:41,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 03:26:41,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:42,060 INFO L124 PetriNetUnfolderBase]: 2583/5004 cut-off events. [2024-11-28 03:26:42,060 INFO L125 PetriNetUnfolderBase]: For 8300/8538 co-relation queries the response was YES. [2024-11-28 03:26:42,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14300 conditions, 5004 events. 2583/5004 cut-off events. For 8300/8538 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 32533 event pairs, 315 based on Foata normal form. 130/4995 useless extension candidates. Maximal degree in co-relation 11097. Up to 2463 conditions per place. [2024-11-28 03:26:42,110 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 89 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2024-11-28 03:26:42,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 110 transitions, 898 flow [2024-11-28 03:26:42,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:26:42,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:26:42,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-11-28 03:26:42,112 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-28 03:26:42,112 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 410 flow. Second operand 4 states and 117 transitions. [2024-11-28 03:26:42,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 110 transitions, 898 flow [2024-11-28 03:26:42,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 110 transitions, 864 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-28 03:26:42,137 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 396 flow [2024-11-28 03:26:42,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=396, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2024-11-28 03:26:42,139 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2024-11-28 03:26:42,140 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 396 flow [2024-11-28 03:26:42,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 03:26:42,140 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:42,140 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:42,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:26:42,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:42,341 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:42,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:42,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1548847934, now seen corresponding path program 1 times [2024-11-28 03:26:42,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:42,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164160424] [2024-11-28 03:26:42,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:42,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:42,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:42,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:42,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164160424] [2024-11-28 03:26:42,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164160424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:26:42,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135221711] [2024-11-28 03:26:42,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:42,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:42,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:42,516 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:42,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:26:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:42,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:26:42,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:42,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:42,724 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:26:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:42,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135221711] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:26:42,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:26:42,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-28 03:26:42,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680805337] [2024-11-28 03:26:42,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:26:42,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:26:42,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:42,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:26:42,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:26:42,854 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-28 03:26:42,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 396 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 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 03:26:42,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:42,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-28 03:26:42,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:44,262 INFO L124 PetriNetUnfolderBase]: 3141/6608 cut-off events. [2024-11-28 03:26:44,262 INFO L125 PetriNetUnfolderBase]: For 12072/12302 co-relation queries the response was YES. [2024-11-28 03:26:44,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19322 conditions, 6608 events. 3141/6608 cut-off events. For 12072/12302 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 46728 event pairs, 788 based on Foata normal form. 90/6667 useless extension candidates. Maximal degree in co-relation 15679. Up to 2350 conditions per place. [2024-11-28 03:26:44,333 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 173 selfloop transitions, 20 changer transitions 0/207 dead transitions. [2024-11-28 03:26:44,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 207 transitions, 1464 flow [2024-11-28 03:26:44,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:26:44,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 03:26:44,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 335 transitions. [2024-11-28 03:26:44,336 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.634469696969697 [2024-11-28 03:26:44,336 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 396 flow. Second operand 11 states and 335 transitions. [2024-11-28 03:26:44,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 207 transitions, 1464 flow [2024-11-28 03:26:44,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 207 transitions, 1366 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:26:44,372 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 588 flow [2024-11-28 03:26:44,372 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=588, PETRI_PLACES=94, PETRI_TRANSITIONS=77} [2024-11-28 03:26:44,373 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2024-11-28 03:26:44,373 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 588 flow [2024-11-28 03:26:44,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 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 03:26:44,373 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:44,373 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:44,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:26:44,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:44,574 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:44,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:44,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1465413950, now seen corresponding path program 1 times [2024-11-28 03:26:44,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:44,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507209080] [2024-11-28 03:26:44,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:44,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:44,718 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 03:26:44,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:44,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507209080] [2024-11-28 03:26:44,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507209080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:44,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:44,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:26:44,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542083772] [2024-11-28 03:26:44,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:44,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:26:44,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:44,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:26:44,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:26:44,741 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-28 03:26:44,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 77 transitions, 588 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:26:44,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:44,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-28 03:26:44,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:46,020 INFO L124 PetriNetUnfolderBase]: 3469/6946 cut-off events. [2024-11-28 03:26:46,020 INFO L125 PetriNetUnfolderBase]: For 13979/14366 co-relation queries the response was YES. [2024-11-28 03:26:46,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20153 conditions, 6946 events. 3469/6946 cut-off events. For 13979/14366 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 45907 event pairs, 727 based on Foata normal form. 67/6990 useless extension candidates. Maximal degree in co-relation 17120. Up to 3973 conditions per place. [2024-11-28 03:26:46,072 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 127 selfloop transitions, 14 changer transitions 0/152 dead transitions. [2024-11-28 03:26:46,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 152 transitions, 1179 flow [2024-11-28 03:26:46,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:26:46,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 03:26:46,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-11-28 03:26:46,075 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-11-28 03:26:46,075 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 588 flow. Second operand 8 states and 212 transitions. [2024-11-28 03:26:46,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 152 transitions, 1179 flow [2024-11-28 03:26:46,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 1162 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-28 03:26:46,126 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 689 flow [2024-11-28 03:26:46,126 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=689, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2024-11-28 03:26:46,127 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 56 predicate places. [2024-11-28 03:26:46,127 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 689 flow [2024-11-28 03:26:46,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:26:46,127 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:46,128 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:46,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:26:46,128 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:46,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:46,128 INFO L85 PathProgramCache]: Analyzing trace with hash 51508525, now seen corresponding path program 1 times [2024-11-28 03:26:46,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:46,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426799894] [2024-11-28 03:26:46,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:46,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:46,243 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 03:26:46,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:46,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426799894] [2024-11-28 03:26:46,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426799894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:46,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:46,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:26:46,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546293129] [2024-11-28 03:26:46,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:46,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:26:46,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:46,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:26:46,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:26:46,264 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-28 03:26:46,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 689 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:26:46,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:46,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-28 03:26:46,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:47,462 INFO L124 PetriNetUnfolderBase]: 3507/7161 cut-off events. [2024-11-28 03:26:47,463 INFO L125 PetriNetUnfolderBase]: For 14979/15265 co-relation queries the response was YES. [2024-11-28 03:26:47,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21149 conditions, 7161 events. 3507/7161 cut-off events. For 14979/15265 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 49168 event pairs, 947 based on Foata normal form. 12/7148 useless extension candidates. Maximal degree in co-relation 17965. Up to 5369 conditions per place. [2024-11-28 03:26:47,548 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 113 selfloop transitions, 8 changer transitions 0/132 dead transitions. [2024-11-28 03:26:47,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 132 transitions, 1113 flow [2024-11-28 03:26:47,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:26:47,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:26:47,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-11-28 03:26:47,553 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-11-28 03:26:47,553 INFO L175 Difference]: Start difference. First operand has 102 places, 84 transitions, 689 flow. Second operand 7 states and 177 transitions. [2024-11-28 03:26:47,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 132 transitions, 1113 flow [2024-11-28 03:26:47,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 132 transitions, 1096 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-28 03:26:47,609 INFO L231 Difference]: Finished difference. Result has 107 places, 85 transitions, 709 flow [2024-11-28 03:26:47,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=709, PETRI_PLACES=107, PETRI_TRANSITIONS=85} [2024-11-28 03:26:47,612 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 61 predicate places. [2024-11-28 03:26:47,612 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 85 transitions, 709 flow [2024-11-28 03:26:47,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:26:47,612 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:47,612 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:47,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:26:47,612 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:47,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:47,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1387487398, now seen corresponding path program 1 times [2024-11-28 03:26:47,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:47,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005792479] [2024-11-28 03:26:47,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:47,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:26:47,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:47,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005792479] [2024-11-28 03:26:47,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005792479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:47,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:47,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:26:47,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211572857] [2024-11-28 03:26:47,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:47,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:26:47,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:47,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:26:47,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:26:47,692 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 03:26:47,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 85 transitions, 709 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 03:26:47,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:47,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 03:26:47,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:48,893 INFO L124 PetriNetUnfolderBase]: 3533/7263 cut-off events. [2024-11-28 03:26:48,893 INFO L125 PetriNetUnfolderBase]: For 16088/16336 co-relation queries the response was YES. [2024-11-28 03:26:48,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21252 conditions, 7263 events. 3533/7263 cut-off events. For 16088/16336 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 50144 event pairs, 590 based on Foata normal form. 0/7262 useless extension candidates. Maximal degree in co-relation 18131. Up to 3403 conditions per place. [2024-11-28 03:26:48,945 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 134 selfloop transitions, 6 changer transitions 0/157 dead transitions. [2024-11-28 03:26:48,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 157 transitions, 1695 flow [2024-11-28 03:26:48,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:26:48,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:26:48,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-11-28 03:26:48,946 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-28 03:26:48,946 INFO L175 Difference]: Start difference. First operand has 107 places, 85 transitions, 709 flow. Second operand 4 states and 117 transitions. [2024-11-28 03:26:48,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 157 transitions, 1695 flow [2024-11-28 03:26:49,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 157 transitions, 1668 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-28 03:26:49,012 INFO L231 Difference]: Finished difference. Result has 108 places, 85 transitions, 712 flow [2024-11-28 03:26:49,012 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=712, PETRI_PLACES=108, PETRI_TRANSITIONS=85} [2024-11-28 03:26:49,013 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2024-11-28 03:26:49,013 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 85 transitions, 712 flow [2024-11-28 03:26:49,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 03:26:49,013 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:49,013 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:49,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:26:49,014 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:49,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:49,014 INFO L85 PathProgramCache]: Analyzing trace with hash -164157545, now seen corresponding path program 1 times [2024-11-28 03:26:49,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:49,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122149080] [2024-11-28 03:26:49,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:49,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:49,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:49,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:49,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122149080] [2024-11-28 03:26:49,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122149080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:26:49,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978945071] [2024-11-28 03:26:49,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:49,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:49,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:49,189 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:49,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:26:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:49,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:26:49,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:49,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:49,420 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:26:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:49,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978945071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:26:49,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:26:49,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-28 03:26:49,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162482128] [2024-11-28 03:26:49,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:26:49,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:26:49,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:49,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:26:49,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:26:49,556 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 03:26:49,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 85 transitions, 712 flow. Second operand has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 12 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:49,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:49,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 03:26:49,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:51,427 INFO L124 PetriNetUnfolderBase]: 4337/8694 cut-off events. [2024-11-28 03:26:51,427 INFO L125 PetriNetUnfolderBase]: For 19505/19861 co-relation queries the response was YES. [2024-11-28 03:26:51,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27014 conditions, 8694 events. 4337/8694 cut-off events. For 19505/19861 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 58791 event pairs, 927 based on Foata normal form. 39/8708 useless extension candidates. Maximal degree in co-relation 23704. Up to 4364 conditions per place. [2024-11-28 03:26:51,537 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 201 selfloop transitions, 45 changer transitions 0/260 dead transitions. [2024-11-28 03:26:51,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 260 transitions, 1989 flow [2024-11-28 03:26:51,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:26:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 03:26:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 456 transitions. [2024-11-28 03:26:51,541 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2024-11-28 03:26:51,541 INFO L175 Difference]: Start difference. First operand has 108 places, 85 transitions, 712 flow. Second operand 17 states and 456 transitions. [2024-11-28 03:26:51,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 260 transitions, 1989 flow [2024-11-28 03:26:51,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 260 transitions, 1955 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:26:51,612 INFO L231 Difference]: Finished difference. Result has 126 places, 108 transitions, 1072 flow [2024-11-28 03:26:51,612 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1072, PETRI_PLACES=126, PETRI_TRANSITIONS=108} [2024-11-28 03:26:51,613 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 80 predicate places. [2024-11-28 03:26:51,613 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 108 transitions, 1072 flow [2024-11-28 03:26:51,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 12 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:51,614 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:51,614 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:51,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:26:51,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:51,815 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:51,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:51,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1994588675, now seen corresponding path program 1 times [2024-11-28 03:26:51,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:51,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516639925] [2024-11-28 03:26:51,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:51,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:51,979 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:51,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:51,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516639925] [2024-11-28 03:26:51,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516639925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:26:51,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626994776] [2024-11-28 03:26:51,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:51,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:51,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:51,982 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:51,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:26:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:52,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:26:52,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:52,268 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:52,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626994776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:52,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:26:52,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-28 03:26:52,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940188192] [2024-11-28 03:26:52,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:52,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:26:52,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:52,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:26:52,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:26:52,281 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 03:26:52,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 108 transitions, 1072 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 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 03:26:52,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:52,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 03:26:52,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:53,493 INFO L124 PetriNetUnfolderBase]: 4901/9400 cut-off events. [2024-11-28 03:26:53,493 INFO L125 PetriNetUnfolderBase]: For 24873/24927 co-relation queries the response was YES. [2024-11-28 03:26:53,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29817 conditions, 9400 events. 4901/9400 cut-off events. For 24873/24927 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 62745 event pairs, 712 based on Foata normal form. 262/9400 useless extension candidates. Maximal degree in co-relation 28870. Up to 5331 conditions per place. [2024-11-28 03:26:53,562 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 138 selfloop transitions, 5 changer transitions 0/163 dead transitions. [2024-11-28 03:26:53,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 163 transitions, 1819 flow [2024-11-28 03:26:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:26:53,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:26:53,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-11-28 03:26:53,563 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-11-28 03:26:53,563 INFO L175 Difference]: Start difference. First operand has 126 places, 108 transitions, 1072 flow. Second operand 4 states and 119 transitions. [2024-11-28 03:26:53,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 163 transitions, 1819 flow [2024-11-28 03:26:53,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 163 transitions, 1699 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-11-28 03:26:53,622 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 1007 flow [2024-11-28 03:26:53,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1007, PETRI_PLACES=124, PETRI_TRANSITIONS=107} [2024-11-28 03:26:53,623 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 78 predicate places. [2024-11-28 03:26:53,623 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 1007 flow [2024-11-28 03:26:53,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 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 03:26:53,623 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:53,623 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 03:26:53,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 03:26:53,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:53,828 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:53,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:53,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1702707277, now seen corresponding path program 1 times [2024-11-28 03:26:53,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:53,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629480744] [2024-11-28 03:26:53,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:53,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:26:53,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:53,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629480744] [2024-11-28 03:26:53,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629480744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:53,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:53,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:26:53,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626767917] [2024-11-28 03:26:53,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:53,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:26:53,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:53,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:26:53,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:26:53,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 03:26:53,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 107 transitions, 1007 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 03:26:53,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:53,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 03:26:53,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:54,983 INFO L124 PetriNetUnfolderBase]: 4541/9002 cut-off events. [2024-11-28 03:26:54,983 INFO L125 PetriNetUnfolderBase]: For 23394/23398 co-relation queries the response was YES. [2024-11-28 03:26:55,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28777 conditions, 9002 events. 4541/9002 cut-off events. For 23394/23398 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 60808 event pairs, 901 based on Foata normal form. 262/9238 useless extension candidates. Maximal degree in co-relation 27049. Up to 4371 conditions per place. [2024-11-28 03:26:55,063 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 153 selfloop transitions, 6 changer transitions 0/179 dead transitions. [2024-11-28 03:26:55,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 179 transitions, 1925 flow [2024-11-28 03:26:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:26:55,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:26:55,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-11-28 03:26:55,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-11-28 03:26:55,064 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 1007 flow. Second operand 4 states and 119 transitions. [2024-11-28 03:26:55,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 179 transitions, 1925 flow [2024-11-28 03:26:55,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 179 transitions, 1915 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:26:55,132 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 1013 flow [2024-11-28 03:26:55,132 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1013, PETRI_PLACES=124, PETRI_TRANSITIONS=107} [2024-11-28 03:26:55,132 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 78 predicate places. [2024-11-28 03:26:55,133 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 1013 flow [2024-11-28 03:26:55,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 03:26:55,133 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:55,133 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:55,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:26:55,133 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:55,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:55,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1107916826, now seen corresponding path program 1 times [2024-11-28 03:26:55,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:55,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404429600] [2024-11-28 03:26:55,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:55,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:55,345 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 03:26:55,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:55,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404429600] [2024-11-28 03:26:55,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404429600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:26:55,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813358924] [2024-11-28 03:26:55,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:55,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:55,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:55,349 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:55,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:26:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:55,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:26:55,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:55,577 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 03:26:55,578 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:55,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813358924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:55,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:26:55,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-11-28 03:26:55,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697254991] [2024-11-28 03:26:55,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:55,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:26:55,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:55,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:26:55,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:26:55,603 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-28 03:26:55,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 107 transitions, 1013 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 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 03:26:55,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:55,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-28 03:26:55,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:57,415 INFO L124 PetriNetUnfolderBase]: 4880/9555 cut-off events. [2024-11-28 03:26:57,415 INFO L125 PetriNetUnfolderBase]: For 27557/27557 co-relation queries the response was YES. [2024-11-28 03:26:57,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31358 conditions, 9555 events. 4880/9555 cut-off events. For 27557/27557 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 65245 event pairs, 1082 based on Foata normal form. 111/9639 useless extension candidates. Maximal degree in co-relation 29649. Up to 3106 conditions per place. [2024-11-28 03:26:57,512 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 158 selfloop transitions, 44 changer transitions 0/213 dead transitions. [2024-11-28 03:26:57,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 213 transitions, 2011 flow [2024-11-28 03:26:57,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:26:57,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 03:26:57,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-11-28 03:26:57,514 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5395833333333333 [2024-11-28 03:26:57,514 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 1013 flow. Second operand 10 states and 259 transitions. [2024-11-28 03:26:57,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 213 transitions, 2011 flow [2024-11-28 03:26:57,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 213 transitions, 1973 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 03:26:57,596 INFO L231 Difference]: Finished difference. Result has 137 places, 121 transitions, 1345 flow [2024-11-28 03:26:57,597 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1345, PETRI_PLACES=137, PETRI_TRANSITIONS=121} [2024-11-28 03:26:57,597 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 91 predicate places. [2024-11-28 03:26:57,597 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 121 transitions, 1345 flow [2024-11-28 03:26:57,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 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 03:26:57,597 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:57,597 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:57,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:26:57,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:57,798 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:57,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:57,799 INFO L85 PathProgramCache]: Analyzing trace with hash -190603464, now seen corresponding path program 1 times [2024-11-28 03:26:57,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:57,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488254443] [2024-11-28 03:26:57,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:57,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:57,964 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 03:26:57,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:57,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488254443] [2024-11-28 03:26:57,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488254443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:57,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:57,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:26:57,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571767323] [2024-11-28 03:26:57,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:57,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:26:57,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:57,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:26:57,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:26:57,986 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-28 03:26:57,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 121 transitions, 1345 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 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 03:26:57,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:57,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-28 03:26:57,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:59,672 INFO L124 PetriNetUnfolderBase]: 5769/11255 cut-off events. [2024-11-28 03:26:59,672 INFO L125 PetriNetUnfolderBase]: For 41579/41579 co-relation queries the response was YES. [2024-11-28 03:26:59,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37635 conditions, 11255 events. 5769/11255 cut-off events. For 41579/41579 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 78584 event pairs, 1221 based on Foata normal form. 161/11383 useless extension candidates. Maximal degree in co-relation 35475. Up to 5362 conditions per place. [2024-11-28 03:26:59,761 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 197 selfloop transitions, 41 changer transitions 0/249 dead transitions. [2024-11-28 03:26:59,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 249 transitions, 2528 flow [2024-11-28 03:26:59,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:26:59,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 03:26:59,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 323 transitions. [2024-11-28 03:26:59,763 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5176282051282052 [2024-11-28 03:26:59,763 INFO L175 Difference]: Start difference. First operand has 137 places, 121 transitions, 1345 flow. Second operand 13 states and 323 transitions. [2024-11-28 03:26:59,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 249 transitions, 2528 flow [2024-11-28 03:26:59,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 249 transitions, 2488 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-11-28 03:26:59,871 INFO L231 Difference]: Finished difference. Result has 154 places, 139 transitions, 1722 flow [2024-11-28 03:26:59,872 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1722, PETRI_PLACES=154, PETRI_TRANSITIONS=139} [2024-11-28 03:26:59,872 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 108 predicate places. [2024-11-28 03:26:59,872 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 139 transitions, 1722 flow [2024-11-28 03:26:59,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 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 03:26:59,872 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:59,872 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:59,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:26:59,873 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:26:59,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:59,873 INFO L85 PathProgramCache]: Analyzing trace with hash -223778791, now seen corresponding path program 1 times [2024-11-28 03:26:59,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:59,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666305140] [2024-11-28 03:26:59,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:59,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:00,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:00,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666305140] [2024-11-28 03:27:00,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666305140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:27:00,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604608891] [2024-11-28 03:27:00,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:00,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:00,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:00,029 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:00,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:27:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:00,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:27:00,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:00,271 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:00,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:00,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604608891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:00,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:27:00,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-28 03:27:00,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055489869] [2024-11-28 03:27:00,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:00,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:27:00,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:00,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:27:00,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:27:00,460 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-28 03:27:00,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 139 transitions, 1722 flow. Second operand has 16 states, 16 states have (on average 17.625) internal successors, (282), 16 states have internal predecessors, (282), 0 states have call successors, (0), 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 03:27:00,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:27:00,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-28 03:27:00,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:27:02,807 INFO L124 PetriNetUnfolderBase]: 6348/12419 cut-off events. [2024-11-28 03:27:02,807 INFO L125 PetriNetUnfolderBase]: For 50967/50967 co-relation queries the response was YES. [2024-11-28 03:27:02,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41798 conditions, 12419 events. 6348/12419 cut-off events. For 50967/50967 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 87150 event pairs, 1221 based on Foata normal form. 301/12685 useless extension candidates. Maximal degree in co-relation 39160. Up to 3105 conditions per place. [2024-11-28 03:27:02,917 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 210 selfloop transitions, 106 changer transitions 0/327 dead transitions. [2024-11-28 03:27:02,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 327 transitions, 3248 flow [2024-11-28 03:27:02,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:27:02,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 03:27:02,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 504 transitions. [2024-11-28 03:27:02,920 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-28 03:27:02,920 INFO L175 Difference]: Start difference. First operand has 154 places, 139 transitions, 1722 flow. Second operand 21 states and 504 transitions. [2024-11-28 03:27:02,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 327 transitions, 3248 flow [2024-11-28 03:27:03,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 327 transitions, 3188 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-11-28 03:27:03,062 INFO L231 Difference]: Finished difference. Result has 165 places, 151 transitions, 2097 flow [2024-11-28 03:27:03,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2097, PETRI_PLACES=165, PETRI_TRANSITIONS=151} [2024-11-28 03:27:03,062 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 119 predicate places. [2024-11-28 03:27:03,063 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 151 transitions, 2097 flow [2024-11-28 03:27:03,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.625) internal successors, (282), 16 states have internal predecessors, (282), 0 states have call successors, (0), 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 03:27:03,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:27:03,063 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:27:03,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:27:03,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:03,264 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:27:03,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:03,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1674784429, now seen corresponding path program 1 times [2024-11-28 03:27:03,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:03,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793868981] [2024-11-28 03:27:03,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:03,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:03,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:03,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793868981] [2024-11-28 03:27:03,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793868981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:27:03,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65444724] [2024-11-28 03:27:03,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:03,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:03,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:03,425 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:03,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:27:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:03,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:27:03,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:03,650 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:03,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:03,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65444724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:03,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:27:03,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-28 03:27:03,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766617595] [2024-11-28 03:27:03,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:03,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:27:03,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:03,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:27:03,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:27:03,826 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-28 03:27:03,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 151 transitions, 2097 flow. Second operand has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 14 states have internal predecessors, (242), 0 states have call successors, (0), 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 03:27:03,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:27:03,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-28 03:27:03,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:27:07,210 INFO L124 PetriNetUnfolderBase]: 8593/16429 cut-off events. [2024-11-28 03:27:07,211 INFO L125 PetriNetUnfolderBase]: For 65178/65178 co-relation queries the response was YES. [2024-11-28 03:27:07,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55579 conditions, 16429 events. 8593/16429 cut-off events. For 65178/65178 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 118039 event pairs, 1664 based on Foata normal form. 256/16640 useless extension candidates. Maximal degree in co-relation 53617. Up to 3780 conditions per place. [2024-11-28 03:27:07,364 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 252 selfloop transitions, 128 changer transitions 0/389 dead transitions. [2024-11-28 03:27:07,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 389 transitions, 4370 flow [2024-11-28 03:27:07,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:27:07,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 03:27:07,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 492 transitions. [2024-11-28 03:27:07,367 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-11-28 03:27:07,367 INFO L175 Difference]: Start difference. First operand has 165 places, 151 transitions, 2097 flow. Second operand 21 states and 492 transitions. [2024-11-28 03:27:07,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 389 transitions, 4370 flow [2024-11-28 03:27:07,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 389 transitions, 4064 flow, removed 140 selfloop flow, removed 7 redundant places. [2024-11-28 03:27:07,593 INFO L231 Difference]: Finished difference. Result has 185 places, 198 transitions, 2965 flow [2024-11-28 03:27:07,593 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1879, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2965, PETRI_PLACES=185, PETRI_TRANSITIONS=198} [2024-11-28 03:27:07,596 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 139 predicate places. [2024-11-28 03:27:07,596 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 198 transitions, 2965 flow [2024-11-28 03:27:07,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 14 states have internal predecessors, (242), 0 states have call successors, (0), 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 03:27:07,596 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:27:07,596 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:27:07,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:27:07,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:07,797 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:27:07,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:07,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1019406129, now seen corresponding path program 2 times [2024-11-28 03:27:07,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:07,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117901859] [2024-11-28 03:27:07,798 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:27:07,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:07,826 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:27:07,826 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:27:07,949 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 03:27:07,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:07,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117901859] [2024-11-28 03:27:07,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117901859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:07,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:07,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:27:07,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363742630] [2024-11-28 03:27:07,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:07,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:27:07,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:07,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:27:07,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:27:07,953 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-28 03:27:07,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 198 transitions, 2965 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 03:27:07,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:27:07,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-28 03:27:07,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:27:10,860 INFO L124 PetriNetUnfolderBase]: 6676/13425 cut-off events. [2024-11-28 03:27:10,860 INFO L125 PetriNetUnfolderBase]: For 57636/57636 co-relation queries the response was YES. [2024-11-28 03:27:10,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45950 conditions, 13425 events. 6676/13425 cut-off events. For 57636/57636 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 96148 event pairs, 2827 based on Foata normal form. 8/13398 useless extension candidates. Maximal degree in co-relation 45895. Up to 10795 conditions per place. [2024-11-28 03:27:10,984 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 163 selfloop transitions, 2 changer transitions 0/191 dead transitions. [2024-11-28 03:27:10,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 191 transitions, 2971 flow [2024-11-28 03:27:10,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:27:10,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:27:10,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-11-28 03:27:10,985 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6736111111111112 [2024-11-28 03:27:10,985 INFO L175 Difference]: Start difference. First operand has 185 places, 198 transitions, 2965 flow. Second operand 3 states and 97 transitions. [2024-11-28 03:27:10,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 191 transitions, 2971 flow [2024-11-28 03:27:11,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 191 transitions, 2490 flow, removed 126 selfloop flow, removed 19 redundant places. [2024-11-28 03:27:11,147 INFO L231 Difference]: Finished difference. Result has 165 places, 178 transitions, 2119 flow [2024-11-28 03:27:11,147 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2119, PETRI_PLACES=165, PETRI_TRANSITIONS=178} [2024-11-28 03:27:11,147 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 119 predicate places. [2024-11-28 03:27:11,148 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 178 transitions, 2119 flow [2024-11-28 03:27:11,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 03:27:11,148 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:27:11,148 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-11-28 03:27:11,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 03:27:11,148 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:27:11,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:11,149 INFO L85 PathProgramCache]: Analyzing trace with hash 702188979, now seen corresponding path program 2 times [2024-11-28 03:27:11,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:11,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392806228] [2024-11-28 03:27:11,149 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:27:11,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:11,184 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:27:11,184 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:27:11,540 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:11,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:11,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392806228] [2024-11-28 03:27:11,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392806228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:27:11,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309401178] [2024-11-28 03:27:11,541 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:27:11,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:11,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:11,544 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:11,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:27:11,732 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:27:11,732 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:27:11,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:27:11,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:11,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:12,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309401178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:12,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:27:12,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-28 03:27:12,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652551421] [2024-11-28 03:27:12,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:12,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 03:27:12,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:12,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 03:27:12,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:27:12,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-28 03:27:12,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 178 transitions, 2119 flow. Second operand has 24 states, 24 states have (on average 19.541666666666668) internal successors, (469), 24 states have internal predecessors, (469), 0 states have call successors, (0), 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 03:27:12,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:27:12,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-28 03:27:12,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:27:16,648 INFO L124 PetriNetUnfolderBase]: 9336/18423 cut-off events. [2024-11-28 03:27:16,648 INFO L125 PetriNetUnfolderBase]: For 50693/50693 co-relation queries the response was YES. [2024-11-28 03:27:16,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60138 conditions, 18423 events. 9336/18423 cut-off events. For 50693/50693 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 129013 event pairs, 2832 based on Foata normal form. 144/18504 useless extension candidates. Maximal degree in co-relation 60090. Up to 8665 conditions per place. [2024-11-28 03:27:16,816 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 445 selfloop transitions, 55 changer transitions 0/516 dead transitions. [2024-11-28 03:27:16,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 516 transitions, 4795 flow [2024-11-28 03:27:16,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:27:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-28 03:27:16,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 714 transitions. [2024-11-28 03:27:16,818 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6467391304347826 [2024-11-28 03:27:16,818 INFO L175 Difference]: Start difference. First operand has 165 places, 178 transitions, 2119 flow. Second operand 23 states and 714 transitions. [2024-11-28 03:27:16,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 516 transitions, 4795 flow [2024-11-28 03:27:16,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 516 transitions, 4787 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-28 03:27:16,991 INFO L231 Difference]: Finished difference. Result has 192 places, 204 transitions, 2634 flow [2024-11-28 03:27:16,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2634, PETRI_PLACES=192, PETRI_TRANSITIONS=204} [2024-11-28 03:27:16,992 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 146 predicate places. [2024-11-28 03:27:16,992 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 204 transitions, 2634 flow [2024-11-28 03:27:16,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 19.541666666666668) internal successors, (469), 24 states have internal predecessors, (469), 0 states have call successors, (0), 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 03:27:16,992 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:27:16,993 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:27:17,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 03:27:17,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:17,193 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:27:17,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:17,194 INFO L85 PathProgramCache]: Analyzing trace with hash 807081718, now seen corresponding path program 3 times [2024-11-28 03:27:17,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:17,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483765067] [2024-11-28 03:27:17,194 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:27:17,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:17,269 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:27:17,269 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:27:17,851 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:17,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:17,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483765067] [2024-11-28 03:27:17,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483765067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:27:17,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287913494] [2024-11-28 03:27:17,852 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:27:17,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:17,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:17,855 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:17,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:27:18,083 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:27:18,084 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:27:18,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:27:18,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:18,221 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:18,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287913494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:18,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:27:18,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2024-11-28 03:27:18,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892517865] [2024-11-28 03:27:18,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:18,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:27:18,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:18,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:27:18,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:27:18,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-28 03:27:18,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 204 transitions, 2634 flow. Second operand has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 states have internal predecessors, (326), 0 states have call successors, (0), 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 03:27:18,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:27:18,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-28 03:27:18,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:27:23,737 INFO L124 PetriNetUnfolderBase]: 12487/24432 cut-off events. [2024-11-28 03:27:23,737 INFO L125 PetriNetUnfolderBase]: For 74749/74749 co-relation queries the response was YES. [2024-11-28 03:27:23,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80643 conditions, 24432 events. 12487/24432 cut-off events. For 74749/74749 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 179787 event pairs, 2046 based on Foata normal form. 188/24549 useless extension candidates. Maximal degree in co-relation 80589. Up to 4789 conditions per place. [2024-11-28 03:27:23,975 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 363 selfloop transitions, 194 changer transitions 0/569 dead transitions. [2024-11-28 03:27:23,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 569 transitions, 5987 flow [2024-11-28 03:27:23,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 03:27:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-28 03:27:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 771 transitions. [2024-11-28 03:27:23,978 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.501953125 [2024-11-28 03:27:23,978 INFO L175 Difference]: Start difference. First operand has 192 places, 204 transitions, 2634 flow. Second operand 32 states and 771 transitions. [2024-11-28 03:27:23,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 569 transitions, 5987 flow [2024-11-28 03:27:24,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 569 transitions, 5892 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-11-28 03:27:24,414 INFO L231 Difference]: Finished difference. Result has 225 places, 288 transitions, 4331 flow [2024-11-28 03:27:24,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2559, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=4331, PETRI_PLACES=225, PETRI_TRANSITIONS=288} [2024-11-28 03:27:24,415 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 179 predicate places. [2024-11-28 03:27:24,415 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 288 transitions, 4331 flow [2024-11-28 03:27:24,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 states have internal predecessors, (326), 0 states have call successors, (0), 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 03:27:24,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:27:24,416 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:27:24,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:27:24,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 03:27:24,618 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:27:24,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:24,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1892840433, now seen corresponding path program 1 times [2024-11-28 03:27:24,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:24,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143443457] [2024-11-28 03:27:24,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:24,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:25,144 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:25,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:25,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143443457] [2024-11-28 03:27:25,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143443457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:27:25,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935036446] [2024-11-28 03:27:25,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:25,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:25,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:25,148 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:25,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:27:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:25,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 03:27:25,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:25,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:25,930 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:25,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935036446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:25,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:27:25,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2024-11-28 03:27:25,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303794557] [2024-11-28 03:27:25,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:25,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 03:27:25,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:25,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 03:27:25,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:27:25,956 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-11-28 03:27:25,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 288 transitions, 4331 flow. Second operand has 26 states, 26 states have (on average 16.5) internal successors, (429), 26 states have internal predecessors, (429), 0 states have call successors, (0), 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 03:27:25,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:27:25,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-11-28 03:27:25,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:27:36,226 INFO L124 PetriNetUnfolderBase]: 20565/38021 cut-off events. [2024-11-28 03:27:36,227 INFO L125 PetriNetUnfolderBase]: For 126370/126370 co-relation queries the response was YES. [2024-11-28 03:27:36,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128613 conditions, 38021 events. 20565/38021 cut-off events. For 126370/126370 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 285817 event pairs, 3199 based on Foata normal form. 573/38494 useless extension candidates. Maximal degree in co-relation 128551. Up to 9608 conditions per place. [2024-11-28 03:27:36,654 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 379 selfloop transitions, 379 changer transitions 0/766 dead transitions. [2024-11-28 03:27:36,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 766 transitions, 9495 flow [2024-11-28 03:27:36,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 03:27:36,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-28 03:27:36,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 839 transitions. [2024-11-28 03:27:36,657 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4481837606837607 [2024-11-28 03:27:36,657 INFO L175 Difference]: Start difference. First operand has 225 places, 288 transitions, 4331 flow. Second operand 39 states and 839 transitions. [2024-11-28 03:27:36,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 766 transitions, 9495 flow [2024-11-28 03:27:37,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 766 transitions, 8890 flow, removed 138 selfloop flow, removed 14 redundant places. [2024-11-28 03:27:37,308 INFO L231 Difference]: Finished difference. Result has 240 places, 442 transitions, 6969 flow [2024-11-28 03:27:37,308 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3752, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=6969, PETRI_PLACES=240, PETRI_TRANSITIONS=442} [2024-11-28 03:27:37,309 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 194 predicate places. [2024-11-28 03:27:37,309 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 442 transitions, 6969 flow [2024-11-28 03:27:37,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.5) internal successors, (429), 26 states have internal predecessors, (429), 0 states have call successors, (0), 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 03:27:37,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:27:37,310 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:27:37,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:27:37,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 03:27:37,510 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:27:37,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:37,511 INFO L85 PathProgramCache]: Analyzing trace with hash 915507506, now seen corresponding path program 4 times [2024-11-28 03:27:37,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:37,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641888076] [2024-11-28 03:27:37,511 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:27:37,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:37,552 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:27:37,552 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:27:38,121 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:38,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:38,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641888076] [2024-11-28 03:27:38,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641888076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:38,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:38,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 03:27:38,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269282441] [2024-11-28 03:27:38,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:38,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:27:38,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:38,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:27:38,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:27:38,148 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-28 03:27:38,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 442 transitions, 6969 flow. Second operand has 13 states, 13 states have (on average 19.692307692307693) internal successors, (256), 13 states have internal predecessors, (256), 0 states have call successors, (0), 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 03:27:38,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:27:38,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-28 03:27:38,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:27:54,103 INFO L124 PetriNetUnfolderBase]: 33738/63230 cut-off events. [2024-11-28 03:27:54,103 INFO L125 PetriNetUnfolderBase]: For 202028/202162 co-relation queries the response was YES. [2024-11-28 03:27:54,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204826 conditions, 63230 events. 33738/63230 cut-off events. For 202028/202162 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 514645 event pairs, 665 based on Foata normal form. 1248/64452 useless extension candidates. Maximal degree in co-relation 204765. Up to 14789 conditions per place. [2024-11-28 03:27:54,809 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 1494 selfloop transitions, 15 changer transitions 9/1546 dead transitions. [2024-11-28 03:27:54,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 1546 transitions, 25233 flow [2024-11-28 03:27:54,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:27:54,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 03:27:54,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 415 transitions. [2024-11-28 03:27:54,811 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6650641025641025 [2024-11-28 03:27:54,811 INFO L175 Difference]: Start difference. First operand has 240 places, 442 transitions, 6969 flow. Second operand 13 states and 415 transitions. [2024-11-28 03:27:54,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 1546 transitions, 25233 flow [2024-11-28 03:27:56,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 1546 transitions, 22836 flow, removed 642 selfloop flow, removed 26 redundant places. [2024-11-28 03:27:56,054 INFO L231 Difference]: Finished difference. Result has 219 places, 406 transitions, 5297 flow [2024-11-28 03:27:56,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5212, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5297, PETRI_PLACES=219, PETRI_TRANSITIONS=406} [2024-11-28 03:27:56,054 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 173 predicate places. [2024-11-28 03:27:56,054 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 406 transitions, 5297 flow [2024-11-28 03:27:56,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.692307692307693) internal successors, (256), 13 states have internal predecessors, (256), 0 states have call successors, (0), 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 03:27:56,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:27:56,055 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:27:56,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 03:27:56,055 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-28 03:27:56,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:56,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1904551492, now seen corresponding path program 1 times [2024-11-28 03:27:56,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:56,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041678366] [2024-11-28 03:27:56,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:56,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:27:56,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:56,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041678366] [2024-11-28 03:27:56,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041678366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:27:56,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337421346] [2024-11-28 03:27:56,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:56,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:56,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:56,448 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:56,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0faaa576-19d3-4598-b2e1-9752ca178a1e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:27:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:56,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:27:56,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:27:56,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:27:57,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337421346] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:57,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:27:57,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-28 03:27:57,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406989672] [2024-11-28 03:27:57,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:57,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 03:27:57,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:57,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 03:27:57,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:27:57,232 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-28 03:27:57,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 406 transitions, 5297 flow. Second operand has 22 states, 22 states have (on average 18.363636363636363) internal successors, (404), 22 states have internal predecessors, (404), 0 states have call successors, (0), 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 03:27:57,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:27:57,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-28 03:27:57,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand