./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:57:05,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:57:05,522 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:57:05,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:57:05,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:57:05,565 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:57:05,565 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:57:05,566 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:57:05,567 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:57:05,567 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:57:05,568 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:57:05,569 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:57:05,569 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:57:05,572 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:57:05,572 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:57:05,572 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:57:05,573 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:57:05,573 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:57:05,573 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:57:05,573 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:57:05,574 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:57:05,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:57:05,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:57:05,579 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:57:05,580 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:57:05,580 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:57:05,580 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:57:05,580 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:57:05,580 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:57:05,581 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:57:05,581 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:57:05,581 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:57:05,581 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:57:05,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:57:05,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:57:05,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:57:05,582 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:57:05,582 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:57:05,583 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:57:05,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:57:05,583 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:57:05,584 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:57:05,584 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:57:05,584 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:57:05,584 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2024-10-14 23:57:05,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:57:05,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:57:05,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:57:05,868 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:57:05,868 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:57:05,869 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2024-10-14 23:57:07,380 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:57:07,674 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:57:07,676 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2024-10-14 23:57:07,699 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/991c6f81b/7571d45782fb4094b5997b7a48c8ec9d/FLAG162e59200 [2024-10-14 23:57:07,715 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/991c6f81b/7571d45782fb4094b5997b7a48c8ec9d [2024-10-14 23:57:07,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:57:07,718 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:57:07,719 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:57:07,720 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:57:07,725 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:57:07,726 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:57:07" (1/1) ... [2024-10-14 23:57:07,727 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20ee8c9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:07, skipping insertion in model container [2024-10-14 23:57:07,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:57:07" (1/1) ... [2024-10-14 23:57:07,784 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:57:08,273 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-14 23:57:08,274 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-14 23:57:08,275 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-14 23:57:08,275 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-14 23:57:08,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:57:08,332 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:57:08,381 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-14 23:57:08,381 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-14 23:57:08,382 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-14 23:57:08,383 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-14 23:57:08,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:57:08,462 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:57:08,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:08 WrapperNode [2024-10-14 23:57:08,463 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:57:08,464 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:57:08,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:57:08,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:57:08,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:08" (1/1) ... [2024-10-14 23:57:08,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:08" (1/1) ... [2024-10-14 23:57:08,537 INFO L138 Inliner]: procedures = 278, calls = 50, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 213 [2024-10-14 23:57:08,538 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:57:08,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:57:08,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:57:08,539 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:57:08,555 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:08" (1/1) ... [2024-10-14 23:57:08,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:08" (1/1) ... [2024-10-14 23:57:08,566 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:08" (1/1) ... [2024-10-14 23:57:08,595 INFO L175 MemorySlicer]: Split 28 memory accesses to 4 slices as follows [2, 5, 19, 2]. 68 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 14 writes are split as follows [0, 0, 13, 1]. [2024-10-14 23:57:08,596 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:08" (1/1) ... [2024-10-14 23:57:08,596 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:08" (1/1) ... [2024-10-14 23:57:08,615 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:08" (1/1) ... [2024-10-14 23:57:08,619 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:08" (1/1) ... [2024-10-14 23:57:08,624 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:08" (1/1) ... [2024-10-14 23:57:08,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:08" (1/1) ... [2024-10-14 23:57:08,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:57:08,635 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:57:08,635 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:57:08,635 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:57:08,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:08" (1/1) ... [2024-10-14 23:57:08,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:57:08,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:08,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 23:57:08,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 23:57:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 23:57:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-14 23:57:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-14 23:57:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-14 23:57:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-14 23:57:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 23:57:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 23:57:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 23:57:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 23:57:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 23:57:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-14 23:57:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 23:57:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 23:57:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 23:57:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-14 23:57:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 23:57:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 23:57:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:57:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-14 23:57:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-14 23:57:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-14 23:57:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-14 23:57:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-14 23:57:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-14 23:57:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 23:57:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 23:57:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 23:57:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 23:57:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:57:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:57:08,735 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 23:57:08,910 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:57:08,912 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:57:09,250 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:57:09,250 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:57:09,567 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:57:09,567 INFO L314 CfgBuilder]: Removed 16 assume(true) statements. [2024-10-14 23:57:09,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:57:09 BoogieIcfgContainer [2024-10-14 23:57:09,568 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:57:09,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:57:09,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:57:09,574 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:57:09,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:57:07" (1/3) ... [2024-10-14 23:57:09,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ef8b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:57:09, skipping insertion in model container [2024-10-14 23:57:09,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:08" (2/3) ... [2024-10-14 23:57:09,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ef8b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:57:09, skipping insertion in model container [2024-10-14 23:57:09,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:57:09" (3/3) ... [2024-10-14 23:57:09,578 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2024-10-14 23:57:09,596 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:57:09,597 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-14 23:57:09,597 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:57:09,695 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-14 23:57:09,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 87 transitions, 181 flow [2024-10-14 23:57:09,774 INFO L124 PetriNetUnfolderBase]: 16/91 cut-off events. [2024-10-14 23:57:09,774 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 23:57:09,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 16/91 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 261 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 62. Up to 4 conditions per place. [2024-10-14 23:57:09,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 87 transitions, 181 flow [2024-10-14 23:57:09,782 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 86 transitions, 179 flow [2024-10-14 23:57:09,794 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:57:09,803 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;@258367f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:57:09,804 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-14 23:57:09,811 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:57:09,811 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-10-14 23:57:09,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:57:09,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:09,812 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-14 23:57:09,813 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-14 23:57:09,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:09,818 INFO L85 PathProgramCache]: Analyzing trace with hash 18440208, now seen corresponding path program 1 times [2024-10-14 23:57:09,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:09,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506592572] [2024-10-14 23:57:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:09,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 23:57:09,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551461686] [2024-10-14 23:57:09,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:09,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:09,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:09,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:57:09,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 23:57:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:10,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 23:57:10,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:57:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:10,136 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:57:10,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:10,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506592572] [2024-10-14 23:57:10,137 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 23:57:10,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551461686] [2024-10-14 23:57:10,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551461686] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:57:10,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:57:10,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 23:57:10,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35083091] [2024-10-14 23:57:10,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:57:10,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:57:10,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:10,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:57:10,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:57:10,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 87 [2024-10-14 23:57:10,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 86 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:10,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:10,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 87 [2024-10-14 23:57:10,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:10,503 INFO L124 PetriNetUnfolderBase]: 126/413 cut-off events. [2024-10-14 23:57:10,504 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 23:57:10,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 413 events. 126/413 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1891 event pairs, 105 based on Foata normal form. 37/370 useless extension candidates. Maximal degree in co-relation 620. Up to 264 conditions per place. [2024-10-14 23:57:10,510 INFO L140 encePairwiseOnDemand]: 72/87 looper letters, 42 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2024-10-14 23:57:10,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 81 transitions, 257 flow [2024-10-14 23:57:10,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:57:10,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:57:10,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2024-10-14 23:57:10,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6436781609195402 [2024-10-14 23:57:10,528 INFO L175 Difference]: Start difference. First operand has 74 places, 86 transitions, 179 flow. Second operand 3 states and 168 transitions. [2024-10-14 23:57:10,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 81 transitions, 257 flow [2024-10-14 23:57:10,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 81 transitions, 257 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:57:10,538 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 175 flow [2024-10-14 23:57:10,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2024-10-14 23:57:10,545 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2024-10-14 23:57:10,546 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 175 flow [2024-10-14 23:57:10,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:10,547 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:10,547 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-14 23:57:10,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 23:57:10,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-10-14 23:57:10,752 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-14 23:57:10,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:10,753 INFO L85 PathProgramCache]: Analyzing trace with hash 18440200, now seen corresponding path program 1 times [2024-10-14 23:57:10,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:10,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720736068] [2024-10-14 23:57:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:10,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:10,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:10,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:10,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720736068] [2024-10-14 23:57:10,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720736068] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:57:10,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:57:10,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:57:10,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010193355] [2024-10-14 23:57:10,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:57:10,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:57:10,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:10,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:57:10,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:57:10,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 87 [2024-10-14 23:57:10,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:10,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:10,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 87 [2024-10-14 23:57:10,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:11,226 INFO L124 PetriNetUnfolderBase]: 126/427 cut-off events. [2024-10-14 23:57:11,228 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 23:57:11,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 427 events. 126/427 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1956 event pairs, 105 based on Foata normal form. 4/351 useless extension candidates. Maximal degree in co-relation 677. Up to 269 conditions per place. [2024-10-14 23:57:11,232 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 40 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-10-14 23:57:11,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 79 transitions, 263 flow [2024-10-14 23:57:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:57:11,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:57:11,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-10-14 23:57:11,238 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5938697318007663 [2024-10-14 23:57:11,238 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 175 flow. Second operand 3 states and 155 transitions. [2024-10-14 23:57:11,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 79 transitions, 263 flow [2024-10-14 23:57:11,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 79 transitions, 261 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:57:11,241 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 189 flow [2024-10-14 23:57:11,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2024-10-14 23:57:11,243 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2024-10-14 23:57:11,243 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 189 flow [2024-10-14 23:57:11,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:11,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:11,244 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 23:57:11,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 23:57:11,245 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-14 23:57:11,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:11,246 INFO L85 PathProgramCache]: Analyzing trace with hash 541190515, now seen corresponding path program 1 times [2024-10-14 23:57:11,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:11,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019861299] [2024-10-14 23:57:11,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:11,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:11,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:11,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:11,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019861299] [2024-10-14 23:57:11,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019861299] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:57:11,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:57:11,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:57:11,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780256937] [2024-10-14 23:57:11,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:57:11,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:57:11,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:11,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:57:11,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:57:11,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2024-10-14 23:57:11,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:11,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:11,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2024-10-14 23:57:11,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:11,762 INFO L124 PetriNetUnfolderBase]: 126/423 cut-off events. [2024-10-14 23:57:11,763 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-14 23:57:11,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 423 events. 126/423 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1941 event pairs, 105 based on Foata normal form. 4/351 useless extension candidates. Maximal degree in co-relation 664. Up to 273 conditions per place. [2024-10-14 23:57:11,767 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 41 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-10-14 23:57:11,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 79 transitions, 279 flow [2024-10-14 23:57:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:57:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:57:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2024-10-14 23:57:11,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5316091954022989 [2024-10-14 23:57:11,770 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 189 flow. Second operand 4 states and 185 transitions. [2024-10-14 23:57:11,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 79 transitions, 279 flow [2024-10-14 23:57:11,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:57:11,775 INFO L231 Difference]: Finished difference. Result has 83 places, 79 transitions, 205 flow [2024-10-14 23:57:11,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=83, PETRI_TRANSITIONS=79} [2024-10-14 23:57:11,776 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 9 predicate places. [2024-10-14 23:57:11,776 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 79 transitions, 205 flow [2024-10-14 23:57:11,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:11,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:11,777 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:57:11,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 23:57:11,777 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-14 23:57:11,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:11,778 INFO L85 PathProgramCache]: Analyzing trace with hash -700003350, now seen corresponding path program 1 times [2024-10-14 23:57:11,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:11,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960210484] [2024-10-14 23:57:11,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:11,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:57:11,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:11,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960210484] [2024-10-14 23:57:11,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960210484] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:57:11,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:57:11,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:57:11,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867717569] [2024-10-14 23:57:11,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:57:11,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:57:11,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:11,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:57:11,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:57:11,915 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2024-10-14 23:57:11,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 79 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:11,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:11,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2024-10-14 23:57:11,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:12,243 INFO L124 PetriNetUnfolderBase]: 126/421 cut-off events. [2024-10-14 23:57:12,244 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-10-14 23:57:12,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 421 events. 126/421 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1930 event pairs, 105 based on Foata normal form. 2/349 useless extension candidates. Maximal degree in co-relation 665. Up to 268 conditions per place. [2024-10-14 23:57:12,247 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 47 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2024-10-14 23:57:12,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 85 transitions, 337 flow [2024-10-14 23:57:12,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:57:12,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:57:12,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2024-10-14 23:57:12,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2024-10-14 23:57:12,249 INFO L175 Difference]: Start difference. First operand has 83 places, 79 transitions, 205 flow. Second operand 4 states and 188 transitions. [2024-10-14 23:57:12,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 85 transitions, 337 flow [2024-10-14 23:57:12,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 85 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:57:12,252 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 221 flow [2024-10-14 23:57:12,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2024-10-14 23:57:12,253 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 12 predicate places. [2024-10-14 23:57:12,253 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 221 flow [2024-10-14 23:57:12,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:12,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:12,254 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-14 23:57:12,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 23:57:12,254 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-14 23:57:12,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:12,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1606673621, now seen corresponding path program 1 times [2024-10-14 23:57:12,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:12,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165747785] [2024-10-14 23:57:12,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:12,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:12,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:12,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:12,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165747785] [2024-10-14 23:57:12,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165747785] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:57:12,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134151626] [2024-10-14 23:57:12,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:12,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:12,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:12,475 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:57:12,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 23:57:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:12,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:57:12,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:57:12,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:12,709 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:57:12,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134151626] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:57:12,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:57:12,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-14 23:57:12,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714900623] [2024-10-14 23:57:12,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:57:12,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:57:12,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:12,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:57:12,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:57:12,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2024-10-14 23:57:12,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:12,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:12,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2024-10-14 23:57:12,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:13,109 INFO L124 PetriNetUnfolderBase]: 126/419 cut-off events. [2024-10-14 23:57:13,109 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-10-14 23:57:13,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 419 events. 126/419 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1923 event pairs, 105 based on Foata normal form. 2/347 useless extension candidates. Maximal degree in co-relation 689. Up to 261 conditions per place. [2024-10-14 23:57:13,112 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 37 selfloop transitions, 7 changer transitions 0/79 dead transitions. [2024-10-14 23:57:13,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 79 transitions, 305 flow [2024-10-14 23:57:13,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:57:13,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:57:13,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 253 transitions. [2024-10-14 23:57:13,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4846743295019157 [2024-10-14 23:57:13,114 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 221 flow. Second operand 6 states and 253 transitions. [2024-10-14 23:57:13,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 79 transitions, 305 flow [2024-10-14 23:57:13,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 79 transitions, 301 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:57:13,117 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 227 flow [2024-10-14 23:57:13,117 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2024-10-14 23:57:13,118 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2024-10-14 23:57:13,118 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 227 flow [2024-10-14 23:57:13,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:13,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:13,118 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1] [2024-10-14 23:57:13,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 23:57:13,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:13,320 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-14 23:57:13,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:13,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1732724703, now seen corresponding path program 1 times [2024-10-14 23:57:13,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:13,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346957943] [2024-10-14 23:57:13,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:13,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:13,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:57:13,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:13,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346957943] [2024-10-14 23:57:13,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346957943] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:57:13,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:57:13,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:57:13,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129776961] [2024-10-14 23:57:13,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:57:13,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:57:13,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:13,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:57:13,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:57:13,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 87 [2024-10-14 23:57:13,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:13,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:13,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 87 [2024-10-14 23:57:13,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:13,646 INFO L124 PetriNetUnfolderBase]: 126/417 cut-off events. [2024-10-14 23:57:13,646 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-14 23:57:13,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 417 events. 126/417 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1900 event pairs, 105 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 688. Up to 265 conditions per place. [2024-10-14 23:57:13,649 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 37 selfloop transitions, 6 changer transitions 0/79 dead transitions. [2024-10-14 23:57:13,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 79 transitions, 311 flow [2024-10-14 23:57:13,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:57:13,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:57:13,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 184 transitions. [2024-10-14 23:57:13,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2024-10-14 23:57:13,652 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 227 flow. Second operand 4 states and 184 transitions. [2024-10-14 23:57:13,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 79 transitions, 311 flow [2024-10-14 23:57:13,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 79 transitions, 296 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-14 23:57:13,657 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 228 flow [2024-10-14 23:57:13,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2024-10-14 23:57:13,658 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 12 predicate places. [2024-10-14 23:57:13,659 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 228 flow [2024-10-14 23:57:13,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:13,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:13,660 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:57:13,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 23:57:13,660 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-14 23:57:13,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:13,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1529309880, now seen corresponding path program 1 times [2024-10-14 23:57:13,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:13,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43306181] [2024-10-14 23:57:13,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:13,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:13,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:13,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:13,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43306181] [2024-10-14 23:57:13,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43306181] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:57:13,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702855519] [2024-10-14 23:57:13,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:13,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:13,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:13,777 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:57:13,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 23:57:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:13,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:57:13,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:57:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:13,970 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:57:14,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:14,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702855519] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:57:14,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:57:14,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 23:57:14,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964449046] [2024-10-14 23:57:14,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:57:14,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 23:57:14,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:14,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 23:57:14,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 23:57:14,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2024-10-14 23:57:14,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 228 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:14,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:14,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2024-10-14 23:57:14,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:14,572 INFO L124 PetriNetUnfolderBase]: 126/431 cut-off events. [2024-10-14 23:57:14,573 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-10-14 23:57:14,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 431 events. 126/431 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2004 event pairs, 105 based on Foata normal form. 4/361 useless extension candidates. Maximal degree in co-relation 718. Up to 263 conditions per place. [2024-10-14 23:57:14,575 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 44 selfloop transitions, 7 changer transitions 0/85 dead transitions. [2024-10-14 23:57:14,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 85 transitions, 365 flow [2024-10-14 23:57:14,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:57:14,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:57:14,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 289 transitions. [2024-10-14 23:57:14,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4745484400656814 [2024-10-14 23:57:14,579 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 228 flow. Second operand 7 states and 289 transitions. [2024-10-14 23:57:14,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 85 transitions, 365 flow [2024-10-14 23:57:14,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 85 transitions, 352 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:57:14,582 INFO L231 Difference]: Finished difference. Result has 93 places, 82 transitions, 268 flow [2024-10-14 23:57:14,583 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=268, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2024-10-14 23:57:14,583 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2024-10-14 23:57:14,583 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 268 flow [2024-10-14 23:57:14,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:14,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:14,584 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:57:14,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 23:57:14,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:14,785 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-14 23:57:14,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:14,786 INFO L85 PathProgramCache]: Analyzing trace with hash -580145144, now seen corresponding path program 2 times [2024-10-14 23:57:14,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:14,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654995495] [2024-10-14 23:57:14,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:14,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 23:57:14,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:14,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654995495] [2024-10-14 23:57:14,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654995495] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:57:14,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474132606] [2024-10-14 23:57:14,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 23:57:14,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:14,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:14,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:57:14,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 23:57:15,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 23:57:15,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:57:15,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 23:57:15,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:57:15,175 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-14 23:57:15,175 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:57:15,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474132606] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:57:15,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:57:15,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2024-10-14 23:57:15,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049407629] [2024-10-14 23:57:15,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:57:15,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:57:15,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:15,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:57:15,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 23:57:15,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 87 [2024-10-14 23:57:15,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:15,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:15,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 87 [2024-10-14 23:57:15,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:15,514 INFO L124 PetriNetUnfolderBase]: 169/479 cut-off events. [2024-10-14 23:57:15,514 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2024-10-14 23:57:15,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 479 events. 169/479 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2334 event pairs, 42 based on Foata normal form. 22/410 useless extension candidates. Maximal degree in co-relation 857. Up to 159 conditions per place. [2024-10-14 23:57:15,517 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 87 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2024-10-14 23:57:15,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 127 transitions, 540 flow [2024-10-14 23:57:15,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:57:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:57:15,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 230 transitions. [2024-10-14 23:57:15,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6609195402298851 [2024-10-14 23:57:15,519 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 268 flow. Second operand 4 states and 230 transitions. [2024-10-14 23:57:15,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 127 transitions, 540 flow [2024-10-14 23:57:15,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 127 transitions, 536 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:57:15,524 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 270 flow [2024-10-14 23:57:15,524 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2024-10-14 23:57:15,526 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2024-10-14 23:57:15,526 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 270 flow [2024-10-14 23:57:15,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:15,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:15,526 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:57:15,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 23:57:15,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:15,727 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-14 23:57:15,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:15,727 INFO L85 PathProgramCache]: Analyzing trace with hash -804629649, now seen corresponding path program 1 times [2024-10-14 23:57:15,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:15,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272174642] [2024-10-14 23:57:15,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:15,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:15,906 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 23:57:15,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:15,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272174642] [2024-10-14 23:57:15,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272174642] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:57:15,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149417864] [2024-10-14 23:57:15,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:15,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:15,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:15,910 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:57:15,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 23:57:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:16,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 23:57:16,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:57:16,247 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:16,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:57:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:16,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149417864] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:57:16,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:57:16,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 19 [2024-10-14 23:57:16,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633764392] [2024-10-14 23:57:16,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:57:16,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-14 23:57:16,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:16,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-14 23:57:16,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-10-14 23:57:16,465 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 87 [2024-10-14 23:57:16,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 270 flow. Second operand has 19 states, 19 states have (on average 33.8421052631579) internal successors, (643), 19 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:16,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:16,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 87 [2024-10-14 23:57:16,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:17,983 INFO L124 PetriNetUnfolderBase]: 131/532 cut-off events. [2024-10-14 23:57:17,984 INFO L125 PetriNetUnfolderBase]: For 421/421 co-relation queries the response was YES. [2024-10-14 23:57:17,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1216 conditions, 532 events. 131/532 cut-off events. For 421/421 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2165 event pairs, 105 based on Foata normal form. 13/495 useless extension candidates. Maximal degree in co-relation 1053. Up to 262 conditions per place. [2024-10-14 23:57:17,987 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 80 selfloop transitions, 55 changer transitions 0/166 dead transitions. [2024-10-14 23:57:17,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 166 transitions, 1143 flow [2024-10-14 23:57:17,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-14 23:57:17,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-10-14 23:57:17,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 1556 transitions. [2024-10-14 23:57:17,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.406478578892372 [2024-10-14 23:57:17,992 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 270 flow. Second operand 44 states and 1556 transitions. [2024-10-14 23:57:17,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 166 transitions, 1143 flow [2024-10-14 23:57:17,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 166 transitions, 1135 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:57:17,998 INFO L231 Difference]: Finished difference. Result has 146 places, 129 transitions, 821 flow [2024-10-14 23:57:17,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=821, PETRI_PLACES=146, PETRI_TRANSITIONS=129} [2024-10-14 23:57:17,999 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 72 predicate places. [2024-10-14 23:57:17,999 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 129 transitions, 821 flow [2024-10-14 23:57:17,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 33.8421052631579) internal successors, (643), 19 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:17,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:18,000 INFO L204 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1] [2024-10-14 23:57:18,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 23:57:18,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:18,201 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-14 23:57:18,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:18,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1970485743, now seen corresponding path program 1 times [2024-10-14 23:57:18,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:18,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935293433] [2024-10-14 23:57:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:18,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:18,959 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:57:18,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:18,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935293433] [2024-10-14 23:57:18,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935293433] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:57:18,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141653890] [2024-10-14 23:57:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:18,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:18,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:18,962 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:57:18,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 23:57:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:19,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 23:57:19,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:57:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:57:19,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:57:19,725 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:57:19,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141653890] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:57:19,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:57:19,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2024-10-14 23:57:19,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984492094] [2024-10-14 23:57:19,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:57:19,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-14 23:57:19,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:19,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-14 23:57:19,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-10-14 23:57:19,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2024-10-14 23:57:19,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 129 transitions, 821 flow. Second operand has 34 states, 34 states have (on average 35.6764705882353) internal successors, (1213), 34 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:19,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:19,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2024-10-14 23:57:19,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:21,974 INFO L124 PetriNetUnfolderBase]: 127/684 cut-off events. [2024-10-14 23:57:21,974 INFO L125 PetriNetUnfolderBase]: For 2683/2683 co-relation queries the response was YES. [2024-10-14 23:57:21,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2062 conditions, 684 events. 127/684 cut-off events. For 2683/2683 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2230 event pairs, 105 based on Foata normal form. 24/635 useless extension candidates. Maximal degree in co-relation 1688. Up to 266 conditions per place. [2024-10-14 23:57:21,979 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 113 selfloop transitions, 93 changer transitions 0/239 dead transitions. [2024-10-14 23:57:21,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 239 transitions, 2465 flow [2024-10-14 23:57:21,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-14 23:57:21,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-10-14 23:57:21,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1171 transitions. [2024-10-14 23:57:21,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43418613274008155 [2024-10-14 23:57:21,984 INFO L175 Difference]: Start difference. First operand has 146 places, 129 transitions, 821 flow. Second operand 31 states and 1171 transitions. [2024-10-14 23:57:21,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 239 transitions, 2465 flow [2024-10-14 23:57:22,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 239 transitions, 2357 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-10-14 23:57:22,005 INFO L231 Difference]: Finished difference. Result has 180 places, 180 transitions, 1558 flow [2024-10-14 23:57:22,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1558, PETRI_PLACES=180, PETRI_TRANSITIONS=180} [2024-10-14 23:57:22,006 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 106 predicate places. [2024-10-14 23:57:22,006 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 180 transitions, 1558 flow [2024-10-14 23:57:22,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 35.6764705882353) internal successors, (1213), 34 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:22,007 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:22,007 INFO L204 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1] [2024-10-14 23:57:22,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-14 23:57:22,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:22,208 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-14 23:57:22,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:22,209 INFO L85 PathProgramCache]: Analyzing trace with hash 10771217, now seen corresponding path program 2 times [2024-10-14 23:57:22,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:22,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559268349] [2024-10-14 23:57:22,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:22,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:24,345 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 108 proven. 540 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:57:24,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:24,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559268349] [2024-10-14 23:57:24,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559268349] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:57:24,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735505829] [2024-10-14 23:57:24,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 23:57:24,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:24,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:24,348 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:57:24,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 23:57:24,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 23:57:24,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:57:24,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-14 23:57:24,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:57:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 108 proven. 540 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:57:25,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:57:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 108 proven. 540 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:57:25,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735505829] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:57:25,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:57:25,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 63 [2024-10-14 23:57:25,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487343164] [2024-10-14 23:57:25,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:57:25,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-10-14 23:57:25,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:25,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-10-14 23:57:25,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1023, Invalid=2883, Unknown=0, NotChecked=0, Total=3906 [2024-10-14 23:57:26,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2024-10-14 23:57:26,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 180 transitions, 1558 flow. Second operand has 63 states, 63 states have (on average 35.61904761904762) internal successors, (2244), 63 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:26,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:26,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2024-10-14 23:57:26,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:30,050 INFO L124 PetriNetUnfolderBase]: 127/969 cut-off events. [2024-10-14 23:57:30,050 INFO L125 PetriNetUnfolderBase]: For 9666/9666 co-relation queries the response was YES. [2024-10-14 23:57:30,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3706 conditions, 969 events. 127/969 cut-off events. For 9666/9666 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2360 event pairs, 105 based on Foata normal form. 45/941 useless extension candidates. Maximal degree in co-relation 3042. Up to 266 conditions per place. [2024-10-14 23:57:30,057 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 203 selfloop transitions, 183 changer transitions 0/419 dead transitions. [2024-10-14 23:57:30,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 419 transitions, 5404 flow [2024-10-14 23:57:30,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-10-14 23:57:30,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2024-10-14 23:57:30,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 2273 transitions. [2024-10-14 23:57:30,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42830224232146225 [2024-10-14 23:57:30,065 INFO L175 Difference]: Start difference. First operand has 180 places, 180 transitions, 1558 flow. Second operand 61 states and 2273 transitions. [2024-10-14 23:57:30,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 419 transitions, 5404 flow [2024-10-14 23:57:30,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 419 transitions, 5332 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-10-14 23:57:30,101 INFO L231 Difference]: Finished difference. Result has 244 places, 273 transitions, 3228 flow [2024-10-14 23:57:30,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1486, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=3228, PETRI_PLACES=244, PETRI_TRANSITIONS=273} [2024-10-14 23:57:30,103 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 170 predicate places. [2024-10-14 23:57:30,103 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 273 transitions, 3228 flow [2024-10-14 23:57:30,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 35.61904761904762) internal successors, (2244), 63 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:30,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:30,105 INFO L204 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 2, 1, 1, 1, 1, 1] [2024-10-14 23:57:30,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-14 23:57:30,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:30,306 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-14 23:57:30,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:30,307 INFO L85 PathProgramCache]: Analyzing trace with hash -498676429, now seen corresponding path program 3 times [2024-10-14 23:57:30,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:30,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094230872] [2024-10-14 23:57:30,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:30,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms