./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_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 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:39:11,359 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:39:11,420 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:39:11,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:39:11,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:39:11,437 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:39:11,438 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:39:11,438 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:39:11,438 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:39:11,438 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:39:11,438 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:39:11,438 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:39:11,439 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:39:11,439 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:39:11,439 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:39:11,439 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:39:11,439 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:39:11,439 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:39:11,439 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:39:11,439 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:39:11,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:39:11,440 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:39:11,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:39:11,440 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:39:11,440 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:39:11,440 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:39:11,440 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:39:11,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:39:11,440 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:39:11,440 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:39:11,440 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:39:11,440 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:39:11,440 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:39:11,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:39:11,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:39:11,441 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:39:11,441 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:39:11,441 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:39:11,441 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:39:11,441 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:39:11,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:39:11,441 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:39:11,441 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:39:11,441 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:39:11,441 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:39:11,442 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 -> 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 [2025-03-17 19:39:11,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:39:11,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:39:11,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:39:11,650 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:39:11,651 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:39:11,651 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2025-03-17 19:39:12,884 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd2981689/a1f0a4f04287452c9114681e90741fb7/FLAGe7cd22078 [2025-03-17 19:39:13,160 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:39:13,161 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2025-03-17 19:39:13,177 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd2981689/a1f0a4f04287452c9114681e90741fb7/FLAGe7cd22078 [2025-03-17 19:39:13,205 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd2981689/a1f0a4f04287452c9114681e90741fb7 [2025-03-17 19:39:13,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:39:13,209 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:39:13,211 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:39:13,212 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:39:13,216 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:39:13,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:39:13" (1/1) ... [2025-03-17 19:39:13,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3949752e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:13, skipping insertion in model container [2025-03-17 19:39:13,218 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:39:13" (1/1) ... [2025-03-17 19:39:13,259 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:39:13,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:39:13,561 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:39:13,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:39:13,663 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:39:13,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:13 WrapperNode [2025-03-17 19:39:13,665 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:39:13,665 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:39:13,666 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:39:13,666 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:39:13,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:13" (1/1) ... [2025-03-17 19:39:13,682 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:13" (1/1) ... [2025-03-17 19:39:13,700 INFO L138 Inliner]: procedures = 271, calls = 110, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 276 [2025-03-17 19:39:13,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:39:13,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:39:13,701 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:39:13,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:39:13,707 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:13" (1/1) ... [2025-03-17 19:39:13,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:13" (1/1) ... [2025-03-17 19:39:13,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:13" (1/1) ... [2025-03-17 19:39:13,722 INFO L175 MemorySlicer]: Split 79 memory accesses to 4 slices as follows [2, 5, 70, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 60, 0]. The 5 writes are split as follows [0, 0, 4, 1]. [2025-03-17 19:39:13,722 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:13" (1/1) ... [2025-03-17 19:39:13,722 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:13" (1/1) ... [2025-03-17 19:39:13,728 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:13" (1/1) ... [2025-03-17 19:39:13,729 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:13" (1/1) ... [2025-03-17 19:39:13,730 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:13" (1/1) ... [2025-03-17 19:39:13,731 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:13" (1/1) ... [2025-03-17 19:39:13,737 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:39:13,738 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:39:13,739 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:39:13,739 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:39:13,739 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:13" (1/1) ... [2025-03-17 19:39:13,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:39:13,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:13,765 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) [2025-03-17 19:39:13,768 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 [2025-03-17 19:39:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 19:39:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 19:39:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 19:39:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:39:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:39:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 19:39:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 19:39:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:39:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:39:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 19:39:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 19:39:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 19:39:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:39:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-17 19:39:13,786 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-17 19:39:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:39:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:39:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 19:39:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 19:39:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:39:13,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:39:13,788 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:39:13,902 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:39:13,903 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:39:14,171 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L954: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-17 19:39:14,171 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L954-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-03-17 19:39:14,254 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:39:14,254 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:39:14,592 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:39:14,594 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:39:14,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:39:14 BoogieIcfgContainer [2025-03-17 19:39:14,594 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:39:14,596 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:39:14,596 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:39:14,599 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:39:14,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:39:13" (1/3) ... [2025-03-17 19:39:14,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6592b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:39:14, skipping insertion in model container [2025-03-17 19:39:14,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:39:13" (2/3) ... [2025-03-17 19:39:14,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6592b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:39:14, skipping insertion in model container [2025-03-17 19:39:14,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:39:14" (3/3) ... [2025-03-17 19:39:14,602 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_76-tricky_address3_racefree.i [2025-03-17 19:39:14,612 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:39:14,614 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_76-tricky_address3_racefree.i that has 2 procedures, 89 locations, 1 initial locations, 11 loop locations, and 16 error locations. [2025-03-17 19:39:14,614 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:39:14,658 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-17 19:39:14,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 113 transitions, 233 flow [2025-03-17 19:39:14,736 INFO L124 PetriNetUnfolderBase]: 35/159 cut-off events. [2025-03-17 19:39:14,738 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:39:14,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 159 events. 35/159 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 633 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 98. Up to 8 conditions per place. [2025-03-17 19:39:14,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 113 transitions, 233 flow [2025-03-17 19:39:14,749 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 112 transitions, 231 flow [2025-03-17 19:39:14,754 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:39:14,761 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;@60f4aec8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:39:14,762 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2025-03-17 19:39:14,768 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:39:14,768 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:39:14,768 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:39:14,768 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:14,769 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:39:14,769 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:14,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:14,773 INFO L85 PathProgramCache]: Analyzing trace with hash 665658, now seen corresponding path program 1 times [2025-03-17 19:39:14,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:14,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508672257] [2025-03-17 19:39:14,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:14,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:14,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:39:14,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:39:14,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:14,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:15,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:15,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508672257] [2025-03-17 19:39:15,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508672257] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:15,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:15,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:39:15,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406945906] [2025-03-17 19:39:15,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:15,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:15,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:15,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:15,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:15,115 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 113 [2025-03-17 19:39:15,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 112 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:15,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:15,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 113 [2025-03-17 19:39:15,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:15,479 INFO L124 PetriNetUnfolderBase]: 486/1471 cut-off events. [2025-03-17 19:39:15,480 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:39:15,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2451 conditions, 1471 events. 486/1471 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9791 event pairs, 440 based on Foata normal form. 230/1515 useless extension candidates. Maximal degree in co-relation 2361. Up to 973 conditions per place. [2025-03-17 19:39:15,496 INFO L140 encePairwiseOnDemand]: 87/113 looper letters, 49 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2025-03-17 19:39:15,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 94 transitions, 299 flow [2025-03-17 19:39:15,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:15,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:15,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2025-03-17 19:39:15,508 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5376106194690266 [2025-03-17 19:39:15,509 INFO L175 Difference]: Start difference. First operand has 92 places, 112 transitions, 231 flow. Second operand 4 states and 243 transitions. [2025-03-17 19:39:15,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 94 transitions, 299 flow [2025-03-17 19:39:15,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 94 transitions, 299 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:39:15,516 INFO L231 Difference]: Finished difference. Result has 97 places, 94 transitions, 215 flow [2025-03-17 19:39:15,518 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=215, PETRI_PLACES=97, PETRI_TRANSITIONS=94} [2025-03-17 19:39:15,521 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 5 predicate places. [2025-03-17 19:39:15,521 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 94 transitions, 215 flow [2025-03-17 19:39:15,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:15,522 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:15,522 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:39:15,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:39:15,522 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:15,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:15,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1643655210, now seen corresponding path program 1 times [2025-03-17 19:39:15,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:15,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156513336] [2025-03-17 19:39:15,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:15,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:15,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:39:15,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:39:15,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:15,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:15,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:15,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:15,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156513336] [2025-03-17 19:39:15,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156513336] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:15,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119986718] [2025-03-17 19:39:15,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:15,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:15,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:15,662 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) [2025-03-17 19:39:15,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:39:15,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:39:15,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:39:15,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:15,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:15,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:39:15,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:15,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:15,781 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:39:15,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119986718] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:15,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:39:15,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:39:15,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315407187] [2025-03-17 19:39:15,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:15,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:39:15,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:15,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:39:15,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:39:15,789 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 113 [2025-03-17 19:39:15,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 215 flow. Second operand has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:15,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:15,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 113 [2025-03-17 19:39:15,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:16,073 INFO L124 PetriNetUnfolderBase]: 486/1470 cut-off events. [2025-03-17 19:39:16,073 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 19:39:16,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 1470 events. 486/1470 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9785 event pairs, 440 based on Foata normal form. 1/1285 useless extension candidates. Maximal degree in co-relation 2443. Up to 968 conditions per place. [2025-03-17 19:39:16,100 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 45 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2025-03-17 19:39:16,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 93 transitions, 313 flow [2025-03-17 19:39:16,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:39:16,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:39:16,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 304 transitions. [2025-03-17 19:39:16,102 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44837758112094395 [2025-03-17 19:39:16,102 INFO L175 Difference]: Start difference. First operand has 97 places, 94 transitions, 215 flow. Second operand 6 states and 304 transitions. [2025-03-17 19:39:16,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 93 transitions, 313 flow [2025-03-17 19:39:16,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 93 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:39:16,106 INFO L231 Difference]: Finished difference. Result has 100 places, 93 transitions, 221 flow [2025-03-17 19:39:16,106 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=100, PETRI_TRANSITIONS=93} [2025-03-17 19:39:16,107 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 8 predicate places. [2025-03-17 19:39:16,107 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 93 transitions, 221 flow [2025-03-17 19:39:16,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:16,107 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:16,107 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:39:16,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 19:39:16,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:16,312 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:16,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:16,313 INFO L85 PathProgramCache]: Analyzing trace with hash 586296607, now seen corresponding path program 1 times [2025-03-17 19:39:16,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:16,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506265749] [2025-03-17 19:39:16,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:16,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:16,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:39:16,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:39:16,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:16,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:16,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:39:16,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:16,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506265749] [2025-03-17 19:39:16,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506265749] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:16,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:16,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:39:16,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969221126] [2025-03-17 19:39:16,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:16,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:39:16,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:16,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:39:16,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:39:16,364 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 113 [2025-03-17 19:39:16,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 93 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:16,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:16,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 113 [2025-03-17 19:39:16,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:16,566 INFO L124 PetriNetUnfolderBase]: 486/1469 cut-off events. [2025-03-17 19:39:16,566 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-17 19:39:16,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2463 conditions, 1469 events. 486/1469 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9770 event pairs, 440 based on Foata normal form. 1/1285 useless extension candidates. Maximal degree in co-relation 2439. Up to 971 conditions per place. [2025-03-17 19:39:16,576 INFO L140 encePairwiseOnDemand]: 110/113 looper letters, 46 selfloop transitions, 4 changer transitions 0/92 dead transitions. [2025-03-17 19:39:16,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 92 transitions, 317 flow [2025-03-17 19:39:16,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:39:16,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:39:16,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2025-03-17 19:39:16,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5162241887905604 [2025-03-17 19:39:16,579 INFO L175 Difference]: Start difference. First operand has 100 places, 93 transitions, 221 flow. Second operand 3 states and 175 transitions. [2025-03-17 19:39:16,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 92 transitions, 317 flow [2025-03-17 19:39:16,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 92 transitions, 295 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-17 19:39:16,583 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 203 flow [2025-03-17 19:39:16,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2025-03-17 19:39:16,585 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 3 predicate places. [2025-03-17 19:39:16,586 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 203 flow [2025-03-17 19:39:16,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:16,586 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:16,586 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:16,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:39:16,587 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:16,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:16,587 INFO L85 PathProgramCache]: Analyzing trace with hash 790575058, now seen corresponding path program 1 times [2025-03-17 19:39:16,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:16,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135071397] [2025-03-17 19:39:16,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:16,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:16,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:39:16,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:39:16,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:16,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:16,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:16,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135071397] [2025-03-17 19:39:16,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135071397] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:16,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458929694] [2025-03-17 19:39:16,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:16,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:16,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:16,705 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) [2025-03-17 19:39:16,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:39:16,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:39:16,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:39:16,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:16,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:16,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:39:16,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:16,799 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:16,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458929694] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:16,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:16,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-17 19:39:16,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726000655] [2025-03-17 19:39:16,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:16,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 19:39:16,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:16,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 19:39:16,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-17 19:39:16,835 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 113 [2025-03-17 19:39:16,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 203 flow. Second operand has 10 states, 10 states have (on average 43.3) internal successors, (433), 10 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:16,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:16,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 113 [2025-03-17 19:39:16,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:17,080 INFO L124 PetriNetUnfolderBase]: 486/1473 cut-off events. [2025-03-17 19:39:17,081 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-03-17 19:39:17,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2466 conditions, 1473 events. 486/1473 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9786 event pairs, 440 based on Foata normal form. 2/1291 useless extension candidates. Maximal degree in co-relation 2432. Up to 969 conditions per place. [2025-03-17 19:39:17,089 INFO L140 encePairwiseOnDemand]: 109/113 looper letters, 46 selfloop transitions, 7 changer transitions 0/95 dead transitions. [2025-03-17 19:39:17,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 95 transitions, 324 flow [2025-03-17 19:39:17,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:39:17,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:39:17,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 349 transitions. [2025-03-17 19:39:17,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44121365360303416 [2025-03-17 19:39:17,093 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 203 flow. Second operand 7 states and 349 transitions. [2025-03-17 19:39:17,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 95 transitions, 324 flow [2025-03-17 19:39:17,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 95 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:39:17,096 INFO L231 Difference]: Finished difference. Result has 101 places, 95 transitions, 229 flow [2025-03-17 19:39:17,097 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=101, PETRI_TRANSITIONS=95} [2025-03-17 19:39:17,098 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 9 predicate places. [2025-03-17 19:39:17,098 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 95 transitions, 229 flow [2025-03-17 19:39:17,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 43.3) internal successors, (433), 10 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:17,099 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:17,099 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:17,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 19:39:17,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-17 19:39:17,302 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:17,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:17,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1669406126, now seen corresponding path program 2 times [2025-03-17 19:39:17,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:17,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544172524] [2025-03-17 19:39:17,304 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:17,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:17,315 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-17 19:39:17,321 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-03-17 19:39:17,321 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:39:17,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:17,360 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:39:17,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:17,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544172524] [2025-03-17 19:39:17,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544172524] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:17,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:17,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:17,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957471358] [2025-03-17 19:39:17,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:17,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:17,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:17,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:17,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:17,366 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 113 [2025-03-17 19:39:17,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 95 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:17,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:17,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 113 [2025-03-17 19:39:17,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:17,564 INFO L124 PetriNetUnfolderBase]: 483/1356 cut-off events. [2025-03-17 19:39:17,564 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-17 19:39:17,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2356 conditions, 1356 events. 483/1356 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9010 event pairs, 0 based on Foata normal form. 21/1244 useless extension candidates. Maximal degree in co-relation 2317. Up to 912 conditions per place. [2025-03-17 19:39:17,571 INFO L140 encePairwiseOnDemand]: 107/113 looper letters, 92 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2025-03-17 19:39:17,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 134 transitions, 497 flow [2025-03-17 19:39:17,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:17,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:17,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 257 transitions. [2025-03-17 19:39:17,573 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5685840707964602 [2025-03-17 19:39:17,573 INFO L175 Difference]: Start difference. First operand has 101 places, 95 transitions, 229 flow. Second operand 4 states and 257 transitions. [2025-03-17 19:39:17,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 134 transitions, 497 flow [2025-03-17 19:39:17,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 134 transitions, 493 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:39:17,578 INFO L231 Difference]: Finished difference. Result has 101 places, 93 transitions, 231 flow [2025-03-17 19:39:17,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=101, PETRI_TRANSITIONS=93} [2025-03-17 19:39:17,579 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 9 predicate places. [2025-03-17 19:39:17,579 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 93 transitions, 231 flow [2025-03-17 19:39:17,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:17,579 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:17,579 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:17,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:39:17,579 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:17,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:17,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2019824339, now seen corresponding path program 1 times [2025-03-17 19:39:17,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:17,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024303999] [2025-03-17 19:39:17,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:17,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:17,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:39:17,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:39:17,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:17,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:39:17,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:17,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024303999] [2025-03-17 19:39:17,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024303999] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:17,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:17,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:17,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112381717] [2025-03-17 19:39:17,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:17,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:17,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:17,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:17,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:17,659 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 113 [2025-03-17 19:39:17,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 93 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:17,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:17,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 113 [2025-03-17 19:39:17,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:17,901 INFO L124 PetriNetUnfolderBase]: 506/1487 cut-off events. [2025-03-17 19:39:17,902 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2025-03-17 19:39:17,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2557 conditions, 1487 events. 506/1487 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 9881 event pairs, 378 based on Foata normal form. 23/1346 useless extension candidates. Maximal degree in co-relation 2518. Up to 875 conditions per place. [2025-03-17 19:39:17,910 INFO L140 encePairwiseOnDemand]: 109/113 looper letters, 95 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2025-03-17 19:39:17,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 136 transitions, 521 flow [2025-03-17 19:39:17,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:17,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:17,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2025-03-17 19:39:17,912 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5796460176991151 [2025-03-17 19:39:17,912 INFO L175 Difference]: Start difference. First operand has 101 places, 93 transitions, 231 flow. Second operand 4 states and 262 transitions. [2025-03-17 19:39:17,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 136 transitions, 521 flow [2025-03-17 19:39:17,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 511 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:39:17,916 INFO L231 Difference]: Finished difference. Result has 100 places, 92 transitions, 229 flow [2025-03-17 19:39:17,917 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=100, PETRI_TRANSITIONS=92} [2025-03-17 19:39:17,917 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 8 predicate places. [2025-03-17 19:39:17,918 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 92 transitions, 229 flow [2025-03-17 19:39:17,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:17,918 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:17,918 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:17,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:39:17,919 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:17,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:17,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1851003954, now seen corresponding path program 1 times [2025-03-17 19:39:17,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:17,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577262064] [2025-03-17 19:39:17,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:17,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:17,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:39:17,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:39:17,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:17,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:18,043 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:18,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:18,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577262064] [2025-03-17 19:39:18,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577262064] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:18,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428449058] [2025-03-17 19:39:18,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:18,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:18,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:18,046 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) [2025-03-17 19:39:18,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:39:18,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:39:18,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:39:18,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:18,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:18,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 19:39:18,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:18,146 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:18,147 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:18,229 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:18,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428449058] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:18,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:18,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-17 19:39:18,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219516304] [2025-03-17 19:39:18,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:18,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 19:39:18,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:18,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 19:39:18,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-03-17 19:39:18,247 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 113 [2025-03-17 19:39:18,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 92 transitions, 229 flow. Second operand has 18 states, 18 states have (on average 43.22222222222222) internal successors, (778), 18 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:18,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:18,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 113 [2025-03-17 19:39:18,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:18,508 INFO L124 PetriNetUnfolderBase]: 485/1458 cut-off events. [2025-03-17 19:39:18,508 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2025-03-17 19:39:18,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2548 conditions, 1458 events. 485/1458 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9535 event pairs, 440 based on Foata normal form. 4/1318 useless extension candidates. Maximal degree in co-relation 2473. Up to 944 conditions per place. [2025-03-17 19:39:18,514 INFO L140 encePairwiseOnDemand]: 109/113 looper letters, 46 selfloop transitions, 15 changer transitions 0/100 dead transitions. [2025-03-17 19:39:18,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 100 transitions, 399 flow [2025-03-17 19:39:18,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 19:39:18,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 19:39:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 695 transitions. [2025-03-17 19:39:18,519 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41002949852507375 [2025-03-17 19:39:18,519 INFO L175 Difference]: Start difference. First operand has 100 places, 92 transitions, 229 flow. Second operand 15 states and 695 transitions. [2025-03-17 19:39:18,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 100 transitions, 399 flow [2025-03-17 19:39:18,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 100 transitions, 393 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:39:18,522 INFO L231 Difference]: Finished difference. Result has 115 places, 100 transitions, 320 flow [2025-03-17 19:39:18,523 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=320, PETRI_PLACES=115, PETRI_TRANSITIONS=100} [2025-03-17 19:39:18,524 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 23 predicate places. [2025-03-17 19:39:18,525 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 100 transitions, 320 flow [2025-03-17 19:39:18,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 43.22222222222222) internal successors, (778), 18 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:18,525 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:18,525 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:18,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 19:39:18,726 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 [2025-03-17 19:39:18,726 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:18,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:18,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1744169266, now seen corresponding path program 2 times [2025-03-17 19:39:18,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:18,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194348208] [2025-03-17 19:39:18,727 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:18,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:18,742 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-17 19:39:18,757 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 19:39:18,757 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:39:18,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:19,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:19,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194348208] [2025-03-17 19:39:19,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194348208] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:19,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513469600] [2025-03-17 19:39:19,001 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:19,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:19,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:19,003 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) [2025-03-17 19:39:19,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 19:39:19,052 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-17 19:39:19,078 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 19:39:19,079 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:39:19,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:19,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 19:39:19,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:19,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:19,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513469600] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:19,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:19,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-03-17 19:39:19,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204130460] [2025-03-17 19:39:19,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:19,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 19:39:19,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:19,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 19:39:19,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-03-17 19:39:19,302 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 113 [2025-03-17 19:39:19,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 100 transitions, 320 flow. Second operand has 23 states, 23 states have (on average 43.21739130434783) internal successors, (994), 23 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:19,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:19,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 113 [2025-03-17 19:39:19,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:19,631 INFO L124 PetriNetUnfolderBase]: 485/1467 cut-off events. [2025-03-17 19:39:19,631 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2025-03-17 19:39:19,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2543 conditions, 1467 events. 485/1467 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9538 event pairs, 440 based on Foata normal form. 3/1326 useless extension candidates. Maximal degree in co-relation 2408. Up to 944 conditions per place. [2025-03-17 19:39:19,636 INFO L140 encePairwiseOnDemand]: 109/113 looper letters, 46 selfloop transitions, 21 changer transitions 0/106 dead transitions. [2025-03-17 19:39:19,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 106 transitions, 508 flow [2025-03-17 19:39:19,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-17 19:39:19,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-17 19:39:19,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 952 transitions. [2025-03-17 19:39:19,638 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40117994100294985 [2025-03-17 19:39:19,638 INFO L175 Difference]: Start difference. First operand has 115 places, 100 transitions, 320 flow. Second operand 21 states and 952 transitions. [2025-03-17 19:39:19,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 106 transitions, 508 flow [2025-03-17 19:39:19,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 106 transitions, 498 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-17 19:39:19,641 INFO L231 Difference]: Finished difference. Result has 134 places, 106 transitions, 421 flow [2025-03-17 19:39:19,641 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=421, PETRI_PLACES=134, PETRI_TRANSITIONS=106} [2025-03-17 19:39:19,642 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 42 predicate places. [2025-03-17 19:39:19,642 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 106 transitions, 421 flow [2025-03-17 19:39:19,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 43.21739130434783) internal successors, (994), 23 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:19,642 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:19,643 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:19,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 19:39:19,843 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 [2025-03-17 19:39:19,843 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:39:19,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:19,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1791277106, now seen corresponding path program 3 times [2025-03-17 19:39:19,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:19,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048815450] [2025-03-17 19:39:19,844 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:39:19,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:19,853 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 11 equivalence classes. [2025-03-17 19:39:19,893 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 19:39:19,894 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-17 19:39:19,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:39:19,894 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:39:19,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-17 19:39:19,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 19:39:19,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:19,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:39:19,929 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:39:19,930 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:39:19,930 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2025-03-17 19:39:19,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2025-03-17 19:39:19,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2025-03-17 19:39:19,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2025-03-17 19:39:19,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2025-03-17 19:39:19,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2025-03-17 19:39:19,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2025-03-17 19:39:19,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2025-03-17 19:39:19,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2025-03-17 19:39:19,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2025-03-17 19:39:19,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2025-03-17 19:39:19,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2025-03-17 19:39:19,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2025-03-17 19:39:19,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2025-03-17 19:39:19,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2025-03-17 19:39:19,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2025-03-17 19:39:19,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2025-03-17 19:39:19,932 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2025-03-17 19:39:19,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2025-03-17 19:39:19,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2025-03-17 19:39:19,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2025-03-17 19:39:19,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2025-03-17 19:39:19,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2025-03-17 19:39:19,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:39:19,933 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2025-03-17 19:39:19,935 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:39:19,935 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 19:39:19,961 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:39:19,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 162 transitions, 340 flow [2025-03-17 19:39:19,975 INFO L124 PetriNetUnfolderBase]: 59/273 cut-off events. [2025-03-17 19:39:19,975 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-17 19:39:19,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 273 events. 59/273 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1261 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 161. Up to 12 conditions per place. [2025-03-17 19:39:19,976 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 162 transitions, 340 flow [2025-03-17 19:39:19,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 162 transitions, 340 flow [2025-03-17 19:39:19,979 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:39:19,979 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;@60f4aec8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:39:19,979 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-03-17 19:39:19,980 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:39:19,981 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:39:19,981 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:39:19,981 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:19,981 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:39:19,981 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:19,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:19,981 INFO L85 PathProgramCache]: Analyzing trace with hash 826524, now seen corresponding path program 1 times [2025-03-17 19:39:19,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:19,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673388928] [2025-03-17 19:39:19,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:19,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:19,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:39:19,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:39:19,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:19,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:20,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:20,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:20,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673388928] [2025-03-17 19:39:20,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673388928] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:20,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:20,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:39:20,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683348853] [2025-03-17 19:39:20,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:20,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:20,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:20,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:20,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:20,030 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 162 [2025-03-17 19:39:20,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 162 transitions, 340 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:20,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:20,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 162 [2025-03-17 19:39:20,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:22,783 INFO L124 PetriNetUnfolderBase]: 20921/43350 cut-off events. [2025-03-17 19:39:22,784 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2025-03-17 19:39:22,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74649 conditions, 43350 events. 20921/43350 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 435084 event pairs, 19440 based on Foata normal form. 7691/46338 useless extension candidates. Maximal degree in co-relation 58580. Up to 31185 conditions per place. [2025-03-17 19:39:23,125 INFO L140 encePairwiseOnDemand]: 126/162 looper letters, 72 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2025-03-17 19:39:23,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 434 flow [2025-03-17 19:39:23,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:23,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:23,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2025-03-17 19:39:23,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2025-03-17 19:39:23,131 INFO L175 Difference]: Start difference. First operand has 131 places, 162 transitions, 340 flow. Second operand 4 states and 344 transitions. [2025-03-17 19:39:23,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 434 flow [2025-03-17 19:39:23,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 134 transitions, 434 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:39:23,138 INFO L231 Difference]: Finished difference. Result has 136 places, 134 transitions, 304 flow [2025-03-17 19:39:23,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=136, PETRI_TRANSITIONS=134} [2025-03-17 19:39:23,143 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 5 predicate places. [2025-03-17 19:39:23,143 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 134 transitions, 304 flow [2025-03-17 19:39:23,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:23,144 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:23,144 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:39:23,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 19:39:23,144 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:23,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:23,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1146102634, now seen corresponding path program 1 times [2025-03-17 19:39:23,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:23,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258140717] [2025-03-17 19:39:23,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:23,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:23,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:39:23,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:39:23,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:23,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:23,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:23,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258140717] [2025-03-17 19:39:23,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258140717] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:23,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402329101] [2025-03-17 19:39:23,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:23,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:23,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:23,236 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) [2025-03-17 19:39:23,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 19:39:23,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:39:23,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:39:23,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:23,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:23,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:39:23,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:23,348 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:39:23,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402329101] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:23,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:39:23,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:39:23,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365953023] [2025-03-17 19:39:23,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:23,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:39:23,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:23,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:39:23,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:39:23,352 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 162 [2025-03-17 19:39:23,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 134 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 6 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) [2025-03-17 19:39:23,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:23,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 162 [2025-03-17 19:39:23,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:25,636 INFO L124 PetriNetUnfolderBase]: 20921/43349 cut-off events. [2025-03-17 19:39:25,636 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2025-03-17 19:39:25,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74659 conditions, 43349 events. 20921/43349 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 435090 event pairs, 19440 based on Foata normal form. 1/38647 useless extension candidates. Maximal degree in co-relation 74640. Up to 31180 conditions per place. [2025-03-17 19:39:25,866 INFO L140 encePairwiseOnDemand]: 157/162 looper letters, 68 selfloop transitions, 6 changer transitions 0/133 dead transitions. [2025-03-17 19:39:25,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 133 transitions, 448 flow [2025-03-17 19:39:25,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:39:25,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:39:25,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 429 transitions. [2025-03-17 19:39:25,868 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44135802469135804 [2025-03-17 19:39:25,868 INFO L175 Difference]: Start difference. First operand has 136 places, 134 transitions, 304 flow. Second operand 6 states and 429 transitions. [2025-03-17 19:39:25,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 133 transitions, 448 flow [2025-03-17 19:39:25,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 133 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:39:25,870 INFO L231 Difference]: Finished difference. Result has 139 places, 133 transitions, 310 flow [2025-03-17 19:39:25,871 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=139, PETRI_TRANSITIONS=133} [2025-03-17 19:39:25,871 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 8 predicate places. [2025-03-17 19:39:25,871 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 133 transitions, 310 flow [2025-03-17 19:39:25,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 6 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) [2025-03-17 19:39:25,872 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:25,872 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:39:25,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 19:39:26,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-17 19:39:26,076 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:26,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:26,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1169442559, now seen corresponding path program 1 times [2025-03-17 19:39:26,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:26,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823296503] [2025-03-17 19:39:26,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:26,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:26,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:39:26,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:39:26,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:26,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:39:26,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:26,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823296503] [2025-03-17 19:39:26,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823296503] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:26,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:26,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:39:26,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867935121] [2025-03-17 19:39:26,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:26,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:39:26,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:26,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:39:26,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:39:26,107 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 162 [2025-03-17 19:39:26,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 133 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:26,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:26,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 162 [2025-03-17 19:39:26,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:28,482 INFO L124 PetriNetUnfolderBase]: 20921/43348 cut-off events. [2025-03-17 19:39:28,482 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2025-03-17 19:39:28,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74661 conditions, 43348 events. 20921/43348 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 435100 event pairs, 19440 based on Foata normal form. 1/38647 useless extension candidates. Maximal degree in co-relation 74636. Up to 31183 conditions per place. [2025-03-17 19:39:28,727 INFO L140 encePairwiseOnDemand]: 159/162 looper letters, 69 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2025-03-17 19:39:28,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 132 transitions, 452 flow [2025-03-17 19:39:28,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:39:28,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:39:28,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2025-03-17 19:39:28,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2025-03-17 19:39:28,729 INFO L175 Difference]: Start difference. First operand has 139 places, 133 transitions, 310 flow. Second operand 3 states and 249 transitions. [2025-03-17 19:39:28,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 132 transitions, 452 flow [2025-03-17 19:39:28,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 132 transitions, 430 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-17 19:39:28,732 INFO L231 Difference]: Finished difference. Result has 134 places, 132 transitions, 292 flow [2025-03-17 19:39:28,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=134, PETRI_TRANSITIONS=132} [2025-03-17 19:39:28,734 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 3 predicate places. [2025-03-17 19:39:28,734 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 132 transitions, 292 flow [2025-03-17 19:39:28,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:28,734 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:28,734 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:28,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 19:39:28,734 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:28,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:28,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1447434211, now seen corresponding path program 1 times [2025-03-17 19:39:28,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:28,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927648763] [2025-03-17 19:39:28,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:28,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:28,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:39:28,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:39:28,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:28,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:28,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:28,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927648763] [2025-03-17 19:39:28,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927648763] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:28,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645494465] [2025-03-17 19:39:28,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:28,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:28,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:28,794 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) [2025-03-17 19:39:28,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 19:39:28,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:39:28,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:39:28,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:28,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:28,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:39:28,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:28,884 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:28,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645494465] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:28,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:28,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-17 19:39:28,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115656978] [2025-03-17 19:39:28,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:28,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 19:39:28,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:28,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 19:39:28,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-17 19:39:28,923 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 162 [2025-03-17 19:39:28,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 132 transitions, 292 flow. Second operand has 10 states, 10 states have (on average 60.3) internal successors, (603), 10 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:28,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:28,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 162 [2025-03-17 19:39:28,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:31,274 INFO L124 PetriNetUnfolderBase]: 20921/43352 cut-off events. [2025-03-17 19:39:31,274 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2025-03-17 19:39:31,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74664 conditions, 43352 events. 20921/43352 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 435029 event pairs, 19440 based on Foata normal form. 2/38653 useless extension candidates. Maximal degree in co-relation 74629. Up to 31181 conditions per place. [2025-03-17 19:39:31,421 INFO L140 encePairwiseOnDemand]: 158/162 looper letters, 69 selfloop transitions, 7 changer transitions 0/135 dead transitions. [2025-03-17 19:39:31,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 135 transitions, 459 flow [2025-03-17 19:39:31,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:39:31,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:39:31,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 491 transitions. [2025-03-17 19:39:31,422 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4329805996472663 [2025-03-17 19:39:31,423 INFO L175 Difference]: Start difference. First operand has 134 places, 132 transitions, 292 flow. Second operand 7 states and 491 transitions. [2025-03-17 19:39:31,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 135 transitions, 459 flow [2025-03-17 19:39:31,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 135 transitions, 445 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:39:31,425 INFO L231 Difference]: Finished difference. Result has 140 places, 135 transitions, 318 flow [2025-03-17 19:39:31,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=140, PETRI_TRANSITIONS=135} [2025-03-17 19:39:31,426 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 9 predicate places. [2025-03-17 19:39:31,426 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 135 transitions, 318 flow [2025-03-17 19:39:31,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 60.3) internal successors, (603), 10 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:31,426 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:31,426 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:31,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 19:39:31,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:31,627 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:31,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:31,627 INFO L85 PathProgramCache]: Analyzing trace with hash 727715235, now seen corresponding path program 2 times [2025-03-17 19:39:31,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:31,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547188017] [2025-03-17 19:39:31,628 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:31,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:31,633 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-17 19:39:31,635 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-03-17 19:39:31,636 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:39:31,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:39:31,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:31,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547188017] [2025-03-17 19:39:31,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547188017] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:31,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:31,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:31,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455940511] [2025-03-17 19:39:31,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:31,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:31,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:31,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:31,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:31,677 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 162 [2025-03-17 19:39:31,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 135 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:31,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:31,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 162 [2025-03-17 19:39:31,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:34,344 INFO L124 PetriNetUnfolderBase]: 23017/45871 cut-off events. [2025-03-17 19:39:34,345 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2025-03-17 19:39:34,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80566 conditions, 45871 events. 23017/45871 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 450361 event pairs, 11716 based on Foata normal form. 21/40755 useless extension candidates. Maximal degree in co-relation 80526. Up to 34500 conditions per place. [2025-03-17 19:39:34,516 INFO L140 encePairwiseOnDemand]: 156/162 looper letters, 119 selfloop transitions, 3 changer transitions 0/178 dead transitions. [2025-03-17 19:39:34,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 178 transitions, 648 flow [2025-03-17 19:39:34,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:34,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:34,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2025-03-17 19:39:34,517 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5432098765432098 [2025-03-17 19:39:34,517 INFO L175 Difference]: Start difference. First operand has 140 places, 135 transitions, 318 flow. Second operand 4 states and 352 transitions. [2025-03-17 19:39:34,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 178 transitions, 648 flow [2025-03-17 19:39:34,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 178 transitions, 644 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:39:34,520 INFO L231 Difference]: Finished difference. Result has 143 places, 137 transitions, 338 flow [2025-03-17 19:39:34,520 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=338, PETRI_PLACES=143, PETRI_TRANSITIONS=137} [2025-03-17 19:39:34,521 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 12 predicate places. [2025-03-17 19:39:34,521 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 137 transitions, 338 flow [2025-03-17 19:39:34,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:34,521 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:34,521 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:34,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 19:39:34,521 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:34,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:34,522 INFO L85 PathProgramCache]: Analyzing trace with hash -743980508, now seen corresponding path program 1 times [2025-03-17 19:39:34,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:34,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295385492] [2025-03-17 19:39:34,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:34,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:34,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:39:34,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:39:34,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:34,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:34,561 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:39:34,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:34,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295385492] [2025-03-17 19:39:34,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295385492] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:34,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:34,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:34,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964540281] [2025-03-17 19:39:34,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:34,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:34,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:34,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:34,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:34,566 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 162 [2025-03-17 19:39:34,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 137 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:34,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:34,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 162 [2025-03-17 19:39:34,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:36,907 INFO L124 PetriNetUnfolderBase]: 21407/40320 cut-off events. [2025-03-17 19:39:36,907 INFO L125 PetriNetUnfolderBase]: For 1134/2063 co-relation queries the response was YES. [2025-03-17 19:39:37,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73580 conditions, 40320 events. 21407/40320 cut-off events. For 1134/2063 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 384813 event pairs, 440 based on Foata normal form. 526/37106 useless extension candidates. Maximal degree in co-relation 73539. Up to 28198 conditions per place. [2025-03-17 19:39:37,128 INFO L140 encePairwiseOnDemand]: 158/162 looper letters, 167 selfloop transitions, 3 changer transitions 0/228 dead transitions. [2025-03-17 19:39:37,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 228 transitions, 890 flow [2025-03-17 19:39:37,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:37,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:37,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 399 transitions. [2025-03-17 19:39:37,129 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6157407407407407 [2025-03-17 19:39:37,129 INFO L175 Difference]: Start difference. First operand has 143 places, 137 transitions, 338 flow. Second operand 4 states and 399 transitions. [2025-03-17 19:39:37,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 228 transitions, 890 flow [2025-03-17 19:39:37,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 228 transitions, 886 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:39:37,133 INFO L231 Difference]: Finished difference. Result has 144 places, 136 transitions, 340 flow [2025-03-17 19:39:37,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=144, PETRI_TRANSITIONS=136} [2025-03-17 19:39:37,134 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 13 predicate places. [2025-03-17 19:39:37,134 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 136 transitions, 340 flow [2025-03-17 19:39:37,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:37,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:37,134 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:37,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 19:39:37,134 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:37,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:37,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1588558467, now seen corresponding path program 1 times [2025-03-17 19:39:37,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:37,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817651831] [2025-03-17 19:39:37,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:37,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:37,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:39:37,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:39:37,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:37,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:39:37,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:37,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817651831] [2025-03-17 19:39:37,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817651831] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:37,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:37,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:37,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116918208] [2025-03-17 19:39:37,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:37,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:37,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:37,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:37,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:37,180 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 162 [2025-03-17 19:39:37,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 136 transitions, 340 flow. Second operand has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:37,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:37,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 162 [2025-03-17 19:39:37,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:40,466 INFO L124 PetriNetUnfolderBase]: 20832/43216 cut-off events. [2025-03-17 19:39:40,467 INFO L125 PetriNetUnfolderBase]: For 2470/3346 co-relation queries the response was YES. [2025-03-17 19:39:40,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76949 conditions, 43216 events. 20832/43216 cut-off events. For 2470/3346 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 433753 event pairs, 16531 based on Foata normal form. 525/39567 useless extension candidates. Maximal degree in co-relation 76908. Up to 26785 conditions per place. [2025-03-17 19:39:40,673 INFO L140 encePairwiseOnDemand]: 158/162 looper letters, 166 selfloop transitions, 3 changer transitions 0/227 dead transitions. [2025-03-17 19:39:40,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 227 transitions, 888 flow [2025-03-17 19:39:40,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:40,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2025-03-17 19:39:40,675 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6141975308641975 [2025-03-17 19:39:40,675 INFO L175 Difference]: Start difference. First operand has 144 places, 136 transitions, 340 flow. Second operand 4 states and 398 transitions. [2025-03-17 19:39:40,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 227 transitions, 888 flow [2025-03-17 19:39:40,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 227 transitions, 882 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:39:40,680 INFO L231 Difference]: Finished difference. Result has 143 places, 135 transitions, 338 flow [2025-03-17 19:39:40,680 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=338, PETRI_PLACES=143, PETRI_TRANSITIONS=135} [2025-03-17 19:39:40,681 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 12 predicate places. [2025-03-17 19:39:40,681 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 135 transitions, 338 flow [2025-03-17 19:39:40,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:40,681 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:40,681 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:40,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 19:39:40,681 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:40,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:40,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1609723250, now seen corresponding path program 1 times [2025-03-17 19:39:40,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:40,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140184592] [2025-03-17 19:39:40,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:40,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:40,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:39:40,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:39:40,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:40,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:40,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:40,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140184592] [2025-03-17 19:39:40,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140184592] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:39:40,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218609952] [2025-03-17 19:39:40,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:40,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:40,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:39:40,777 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) [2025-03-17 19:39:40,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 19:39:40,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:39:40,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:39:40,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:40,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:40,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 19:39:40,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:39:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:40,880 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:39:40,937 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:40,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218609952] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:39:40,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:39:40,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-17 19:39:40,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353162376] [2025-03-17 19:39:40,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:39:40,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 19:39:40,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:40,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 19:39:40,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-03-17 19:39:40,957 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 162 [2025-03-17 19:39:40,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 135 transitions, 338 flow. Second operand has 18 states, 18 states have (on average 60.27777777777778) internal successors, (1085), 18 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:40,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:40,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 162 [2025-03-17 19:39:40,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:44,136 INFO L124 PetriNetUnfolderBase]: 20919/43590 cut-off events. [2025-03-17 19:39:44,137 INFO L125 PetriNetUnfolderBase]: For 2583/3453 co-relation queries the response was YES. [2025-03-17 19:39:44,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77419 conditions, 43590 events. 20919/43590 cut-off events. For 2583/3453 co-relation queries the response was YES. Maximal size of possible extension queue 1171. Compared 438877 event pairs, 19440 based on Foata normal form. 22/39264 useless extension candidates. Maximal degree in co-relation 77342. Up to 31203 conditions per place. [2025-03-17 19:39:44,323 INFO L140 encePairwiseOnDemand]: 158/162 looper letters, 70 selfloop transitions, 15 changer transitions 0/143 dead transitions. [2025-03-17 19:39:44,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 143 transitions, 556 flow [2025-03-17 19:39:44,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 19:39:44,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 19:39:44,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 973 transitions. [2025-03-17 19:39:44,325 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40041152263374485 [2025-03-17 19:39:44,325 INFO L175 Difference]: Start difference. First operand has 143 places, 135 transitions, 338 flow. Second operand 15 states and 973 transitions. [2025-03-17 19:39:44,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 143 transitions, 556 flow [2025-03-17 19:39:44,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 143 transitions, 550 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:39:44,330 INFO L231 Difference]: Finished difference. Result has 158 places, 143 transitions, 429 flow [2025-03-17 19:39:44,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=429, PETRI_PLACES=158, PETRI_TRANSITIONS=143} [2025-03-17 19:39:44,330 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 27 predicate places. [2025-03-17 19:39:44,331 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 143 transitions, 429 flow [2025-03-17 19:39:44,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 60.27777777777778) internal successors, (1085), 18 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:44,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:44,331 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:44,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-17 19:39:44,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:39:44,532 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:44,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:44,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1150394866, now seen corresponding path program 2 times [2025-03-17 19:39:44,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:44,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602801229] [2025-03-17 19:39:44,532 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:39:44,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:44,541 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-03-17 19:39:44,544 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 11 of 32 statements. [2025-03-17 19:39:44,544 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:39:44,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:44,583 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-17 19:39:44,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:44,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602801229] [2025-03-17 19:39:44,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602801229] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:44,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:44,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:39:44,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024100618] [2025-03-17 19:39:44,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:44,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:39:44,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:44,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:39:44,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:39:44,592 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 162 [2025-03-17 19:39:44,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 143 transitions, 429 flow. Second operand has 6 states, 6 states have (on average 60.0) internal successors, (360), 6 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:44,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:44,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 162 [2025-03-17 19:39:44,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:47,601 INFO L124 PetriNetUnfolderBase]: 21731/41748 cut-off events. [2025-03-17 19:39:47,602 INFO L125 PetriNetUnfolderBase]: For 1878/1878 co-relation queries the response was YES. [2025-03-17 19:39:47,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76592 conditions, 41748 events. 21731/41748 cut-off events. For 1878/1878 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 401027 event pairs, 819 based on Foata normal form. 441/38439 useless extension candidates. Maximal degree in co-relation 76491. Up to 26688 conditions per place. [2025-03-17 19:39:47,835 INFO L140 encePairwiseOnDemand]: 157/162 looper letters, 203 selfloop transitions, 6 changer transitions 0/263 dead transitions. [2025-03-17 19:39:47,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 263 transitions, 1085 flow [2025-03-17 19:39:47,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:39:47,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:39:47,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 545 transitions. [2025-03-17 19:39:47,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5606995884773662 [2025-03-17 19:39:47,837 INFO L175 Difference]: Start difference. First operand has 158 places, 143 transitions, 429 flow. Second operand 6 states and 545 transitions. [2025-03-17 19:39:47,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 263 transitions, 1085 flow [2025-03-17 19:39:47,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 263 transitions, 1075 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-17 19:39:47,841 INFO L231 Difference]: Finished difference. Result has 158 places, 142 transitions, 427 flow [2025-03-17 19:39:47,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=427, PETRI_PLACES=158, PETRI_TRANSITIONS=142} [2025-03-17 19:39:47,842 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 27 predicate places. [2025-03-17 19:39:47,842 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 142 transitions, 427 flow [2025-03-17 19:39:47,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.0) internal successors, (360), 6 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:47,842 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:47,842 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:47,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 19:39:47,842 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:47,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:47,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1302503217, now seen corresponding path program 1 times [2025-03-17 19:39:47,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:47,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823687104] [2025-03-17 19:39:47,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:47,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:47,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 19:39:47,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 19:39:47,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:47,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-17 19:39:47,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:47,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823687104] [2025-03-17 19:39:47,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823687104] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:47,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:47,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:47,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953499505] [2025-03-17 19:39:47,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:47,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:47,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:47,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:47,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:47,908 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 162 [2025-03-17 19:39:47,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 142 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:47,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:47,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 162 [2025-03-17 19:39:47,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:39:50,786 INFO L124 PetriNetUnfolderBase]: 21290/40509 cut-off events. [2025-03-17 19:39:50,786 INFO L125 PetriNetUnfolderBase]: For 3442/3442 co-relation queries the response was YES. [2025-03-17 19:39:50,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75471 conditions, 40509 events. 21290/40509 cut-off events. For 3442/3442 co-relation queries the response was YES. Maximal size of possible extension queue 1110. Compared 382705 event pairs, 1280 based on Foata normal form. 441/37801 useless extension candidates. Maximal degree in co-relation 75374. Up to 28410 conditions per place. [2025-03-17 19:39:51,054 INFO L140 encePairwiseOnDemand]: 157/162 looper letters, 162 selfloop transitions, 6 changer transitions 0/222 dead transitions. [2025-03-17 19:39:51,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 222 transitions, 921 flow [2025-03-17 19:39:51,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:39:51,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:39:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 386 transitions. [2025-03-17 19:39:51,055 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.595679012345679 [2025-03-17 19:39:51,055 INFO L175 Difference]: Start difference. First operand has 158 places, 142 transitions, 427 flow. Second operand 4 states and 386 transitions. [2025-03-17 19:39:51,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 222 transitions, 921 flow [2025-03-17 19:39:51,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 222 transitions, 905 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-03-17 19:39:51,083 INFO L231 Difference]: Finished difference. Result has 156 places, 142 transitions, 427 flow [2025-03-17 19:39:51,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=427, PETRI_PLACES=156, PETRI_TRANSITIONS=142} [2025-03-17 19:39:51,083 INFO L279 CegarLoopForPetriNet]: 131 programPoint places, 25 predicate places. [2025-03-17 19:39:51,083 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 142 transitions, 427 flow [2025-03-17 19:39:51,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:51,083 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:51,083 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:51,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-17 19:39:51,084 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-03-17 19:39:51,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:51,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1725665907, now seen corresponding path program 1 times [2025-03-17 19:39:51,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:51,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067755213] [2025-03-17 19:39:51,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:51,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:51,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-17 19:39:51,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-17 19:39:51,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:51,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:51,125 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-17 19:39:51,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:51,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067755213] [2025-03-17 19:39:51,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067755213] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:51,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:51,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:39:51,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174346448] [2025-03-17 19:39:51,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:51,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:39:51,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:51,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:39:51,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:39:51,131 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 162 [2025-03-17 19:39:51,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 142 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:51,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:51,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 162 [2025-03-17 19:39:51,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand