./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed 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_20-callback_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 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:35:21,074 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:35:21,137 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:35:21,142 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:35:21,142 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:35:21,164 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:35:21,165 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:35:21,165 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:35:21,165 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:35:21,165 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:35:21,165 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:35:21,165 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:35:21,166 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:35:21,166 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:35:21,166 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:35:21,166 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:35:21,166 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:35:21,166 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:35:21,166 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:35:21,166 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:35:21,166 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:35:21,166 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:35:21,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:35:21,166 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:35:21,166 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:35:21,166 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:35:21,166 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:35:21,166 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:35:21,166 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:35:21,167 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:35:21,167 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:35:21,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:35:21,167 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:35:21,167 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:35:21,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:35:21,167 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:35:21,167 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:35:21,167 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:35:21,167 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:35:21,167 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:35:21,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:35:21,167 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:35:21,167 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:35:21,167 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:35:21,167 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:35:21,167 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 -> 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f [2025-03-09 06:35:21,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:35:21,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:35:21,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:35:21,438 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:35:21,438 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:35:21,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2025-03-09 06:35:22,572 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d9d3e18/5a0fa58b1a88435eb8a7f271607d8f41/FLAG839c8dd8f [2025-03-09 06:35:22,868 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:35:22,869 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2025-03-09 06:35:22,879 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d9d3e18/5a0fa58b1a88435eb8a7f271607d8f41/FLAG839c8dd8f [2025-03-09 06:35:22,889 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d9d3e18/5a0fa58b1a88435eb8a7f271607d8f41 [2025-03-09 06:35:22,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:35:22,892 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:35:22,893 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:35:22,893 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:35:22,896 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:35:22,896 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:35:22" (1/1) ... [2025-03-09 06:35:22,897 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af98c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:22, skipping insertion in model container [2025-03-09 06:35:22,897 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:35:22" (1/1) ... [2025-03-09 06:35:22,926 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:35:23,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:35:23,148 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:35:23,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:35:23,238 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:35:23,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:23 WrapperNode [2025-03-09 06:35:23,239 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:35:23,240 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:35:23,240 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:35:23,241 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:35:23,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:23" (1/1) ... [2025-03-09 06:35:23,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:23" (1/1) ... [2025-03-09 06:35:23,276 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 194 [2025-03-09 06:35:23,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:35:23,278 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:35:23,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:35:23,278 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:35:23,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:23" (1/1) ... [2025-03-09 06:35:23,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:23" (1/1) ... [2025-03-09 06:35:23,291 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:23" (1/1) ... [2025-03-09 06:35:23,305 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2025-03-09 06:35:23,308 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:23" (1/1) ... [2025-03-09 06:35:23,309 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:23" (1/1) ... [2025-03-09 06:35:23,319 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:23" (1/1) ... [2025-03-09 06:35:23,321 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:23" (1/1) ... [2025-03-09 06:35:23,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:23" (1/1) ... [2025-03-09 06:35:23,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:23" (1/1) ... [2025-03-09 06:35:23,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:35:23,328 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:35:23,328 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:35:23,328 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:35:23,331 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:23" (1/1) ... [2025-03-09 06:35:23,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:35:23,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:35:23,362 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) [2025-03-09 06:35:23,364 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 [2025-03-09 06:35:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:35:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:35:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-09 06:35:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-09 06:35:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:35:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:35:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-09 06:35:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-09 06:35:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-09 06:35:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:35:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-09 06:35:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-09 06:35:23,385 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-09 06:35:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 06:35:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:35:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:35:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-09 06:35:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-09 06:35:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-09 06:35:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:35:23,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:35:23,388 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:35:23,528 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:35:23,534 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:35:23,749 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L720: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-09 06:35:23,749 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L720-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-03-09 06:35:23,776 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:35:23,777 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:35:23,989 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:35:23,989 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:35:23,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:35:23 BoogieIcfgContainer [2025-03-09 06:35:23,990 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:35:23,993 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:35:23,994 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:35:23,997 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:35:23,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:35:22" (1/3) ... [2025-03-09 06:35:23,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33684d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:35:23, skipping insertion in model container [2025-03-09 06:35:23,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:23" (2/3) ... [2025-03-09 06:35:24,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33684d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:35:24, skipping insertion in model container [2025-03-09 06:35:24,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:35:23" (3/3) ... [2025-03-09 06:35:24,001 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2025-03-09 06:35:24,013 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:35:24,015 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_20-callback_racefree.i that has 2 procedures, 57 locations, 1 initial locations, 6 loop locations, and 10 error locations. [2025-03-09 06:35:24,015 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:35:24,061 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-09 06:35:24,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 68 transitions, 143 flow [2025-03-09 06:35:24,137 INFO L124 PetriNetUnfolderBase]: 19/110 cut-off events. [2025-03-09 06:35:24,139 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-09 06:35:24,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 110 events. 19/110 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 396 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 59. Up to 6 conditions per place. [2025-03-09 06:35:24,143 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 68 transitions, 143 flow [2025-03-09 06:35:24,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 67 transitions, 141 flow [2025-03-09 06:35:24,156 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:35:24,170 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;@2f449c6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:35:24,170 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-03-09 06:35:24,180 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:35:24,180 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-03-09 06:35:24,180 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:35:24,180 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:24,181 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 06:35:24,182 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-03-09 06:35:24,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash 461764311, now seen corresponding path program 1 times [2025-03-09 06:35:24,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:24,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507900414] [2025-03-09 06:35:24,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:24,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:24,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:35:24,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:35:24,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:24,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:35:24,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:35:24,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:35:24,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507900414] [2025-03-09 06:35:24,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507900414] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:35:24,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:35:24,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:35:24,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400380299] [2025-03-09 06:35:24,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:35:24,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:35:24,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:35:24,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:35:24,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:35:24,538 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2025-03-09 06:35:24,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 67 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:24,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:35:24,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2025-03-09 06:35:24,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:35:24,750 INFO L124 PetriNetUnfolderBase]: 134/418 cut-off events. [2025-03-09 06:35:24,750 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-09 06:35:24,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 708 conditions, 418 events. 134/418 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2129 event pairs, 0 based on Foata normal form. 49/417 useless extension candidates. Maximal degree in co-relation 683. Up to 263 conditions per place. [2025-03-09 06:35:24,758 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 40 selfloop transitions, 3 changer transitions 1/70 dead transitions. [2025-03-09 06:35:24,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 70 transitions, 235 flow [2025-03-09 06:35:24,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:35:24,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:35:24,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2025-03-09 06:35:24,772 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5992647058823529 [2025-03-09 06:35:24,774 INFO L175 Difference]: Start difference. First operand has 60 places, 67 transitions, 141 flow. Second operand 4 states and 163 transitions. [2025-03-09 06:35:24,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 70 transitions, 235 flow [2025-03-09 06:35:24,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 235 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:35:24,783 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 129 flow [2025-03-09 06:35:24,785 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2025-03-09 06:35:24,787 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2025-03-09 06:35:24,790 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 129 flow [2025-03-09 06:35:24,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:24,790 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:24,790 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:35:24,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:35:24,791 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-03-09 06:35:24,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:24,792 INFO L85 PathProgramCache]: Analyzing trace with hash -359258400, now seen corresponding path program 1 times [2025-03-09 06:35:24,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:24,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599945864] [2025-03-09 06:35:24,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:24,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:24,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:35:24,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:35:24,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:24,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:35:24,847 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:35:24,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:35:24,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:35:24,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:24,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:35:24,886 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:35:24,887 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 06:35:24,888 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2025-03-09 06:35:24,889 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2025-03-09 06:35:24,890 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2025-03-09 06:35:24,890 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2025-03-09 06:35:24,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2025-03-09 06:35:24,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2025-03-09 06:35:24,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2025-03-09 06:35:24,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2025-03-09 06:35:24,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2025-03-09 06:35:24,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2025-03-09 06:35:24,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2025-03-09 06:35:24,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:35:24,892 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-09 06:35:24,894 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 06:35:24,895 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-09 06:35:24,916 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 06:35:24,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 82 transitions, 180 flow [2025-03-09 06:35:24,942 INFO L124 PetriNetUnfolderBase]: 31/185 cut-off events. [2025-03-09 06:35:24,942 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-09 06:35:24,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 185 events. 31/185 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 799 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 118. Up to 9 conditions per place. [2025-03-09 06:35:24,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 82 transitions, 180 flow [2025-03-09 06:35:24,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 82 transitions, 180 flow [2025-03-09 06:35:24,947 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:35:24,948 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;@2f449c6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:35:24,948 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-03-09 06:35:24,951 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:35:24,951 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2025-03-09 06:35:24,951 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:35:24,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:24,951 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 06:35:24,951 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-03-09 06:35:24,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:24,952 INFO L85 PathProgramCache]: Analyzing trace with hash 540028853, now seen corresponding path program 1 times [2025-03-09 06:35:24,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:24,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546099076] [2025-03-09 06:35:24,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:24,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:24,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:35:24,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:35:24,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:24,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:35:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:35:25,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:35:25,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546099076] [2025-03-09 06:35:25,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546099076] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:35:25,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:35:25,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:35:25,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642836511] [2025-03-09 06:35:25,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:35:25,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:35:25,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:35:25,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:35:25,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:35:25,053 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 82 [2025-03-09 06:35:25,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 82 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:25,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:35:25,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 82 [2025-03-09 06:35:25,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:35:25,582 INFO L124 PetriNetUnfolderBase]: 2160/4519 cut-off events. [2025-03-09 06:35:25,582 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2025-03-09 06:35:25,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8037 conditions, 4519 events. 2160/4519 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 33402 event pairs, 948 based on Foata normal form. 523/4584 useless extension candidates. Maximal degree in co-relation 1067. Up to 3454 conditions per place. [2025-03-09 06:35:25,609 INFO L140 encePairwiseOnDemand]: 66/82 looper letters, 53 selfloop transitions, 3 changer transitions 1/87 dead transitions. [2025-03-09 06:35:25,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 87 transitions, 304 flow [2025-03-09 06:35:25,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:35:25,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:35:25,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2025-03-09 06:35:25,612 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5914634146341463 [2025-03-09 06:35:25,613 INFO L175 Difference]: Start difference. First operand has 73 places, 82 transitions, 180 flow. Second operand 4 states and 194 transitions. [2025-03-09 06:35:25,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 87 transitions, 304 flow [2025-03-09 06:35:25,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 87 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:35:25,616 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 182 flow [2025-03-09 06:35:25,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2025-03-09 06:35:25,617 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2025-03-09 06:35:25,617 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 182 flow [2025-03-09 06:35:25,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:25,617 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:25,617 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:35:25,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:35:25,618 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-03-09 06:35:25,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:25,618 INFO L85 PathProgramCache]: Analyzing trace with hash 35587471, now seen corresponding path program 1 times [2025-03-09 06:35:25,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:25,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090264638] [2025-03-09 06:35:25,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:25,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:25,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:35:25,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:35:25,664 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:25,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:35:25,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:35:25,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:35:25,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090264638] [2025-03-09 06:35:25,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090264638] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:35:25,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:35:25,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:35:25,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026349941] [2025-03-09 06:35:25,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:35:25,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:35:25,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:35:25,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:35:25,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:35:25,785 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 82 [2025-03-09 06:35:25,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:25,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:35:25,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 82 [2025-03-09 06:35:25,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:35:26,268 INFO L124 PetriNetUnfolderBase]: 1980/4275 cut-off events. [2025-03-09 06:35:26,268 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2025-03-09 06:35:26,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7735 conditions, 4275 events. 1980/4275 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 32463 event pairs, 84 based on Foata normal form. 49/3966 useless extension candidates. Maximal degree in co-relation 1121. Up to 2512 conditions per place. [2025-03-09 06:35:26,288 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 73 selfloop transitions, 6 changer transitions 0/109 dead transitions. [2025-03-09 06:35:26,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 109 transitions, 410 flow [2025-03-09 06:35:26,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:35:26,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:35:26,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 260 transitions. [2025-03-09 06:35:26,292 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5284552845528455 [2025-03-09 06:35:26,292 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 182 flow. Second operand 6 states and 260 transitions. [2025-03-09 06:35:26,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 109 transitions, 410 flow [2025-03-09 06:35:26,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 109 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:35:26,295 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 188 flow [2025-03-09 06:35:26,296 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2025-03-09 06:35:26,296 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2025-03-09 06:35:26,297 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 188 flow [2025-03-09 06:35:26,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:26,298 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:26,298 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-03-09 06:35:26,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:35:26,298 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-03-09 06:35:26,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:26,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1103212085, now seen corresponding path program 1 times [2025-03-09 06:35:26,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:26,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205008941] [2025-03-09 06:35:26,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:26,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:26,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:35:26,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:35:26,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:26,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:35:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:35:26,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:35:26,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205008941] [2025-03-09 06:35:26,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205008941] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:35:26,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:35:26,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:35:26,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138128038] [2025-03-09 06:35:26,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:35:26,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:35:26,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:35:26,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:35:26,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:35:26,376 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 82 [2025-03-09 06:35:26,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:26,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:35:26,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 82 [2025-03-09 06:35:26,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:35:26,717 INFO L124 PetriNetUnfolderBase]: 1896/4094 cut-off events. [2025-03-09 06:35:26,718 INFO L125 PetriNetUnfolderBase]: For 432/432 co-relation queries the response was YES. [2025-03-09 06:35:26,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7534 conditions, 4094 events. 1896/4094 cut-off events. For 432/432 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 30694 event pairs, 78 based on Foata normal form. 49/3845 useless extension candidates. Maximal degree in co-relation 3647. Up to 2658 conditions per place. [2025-03-09 06:35:26,733 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 60 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2025-03-09 06:35:26,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 96 transitions, 366 flow [2025-03-09 06:35:26,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:35:26,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:35:26,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2025-03-09 06:35:26,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5640243902439024 [2025-03-09 06:35:26,735 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 188 flow. Second operand 4 states and 185 transitions. [2025-03-09 06:35:26,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 96 transitions, 366 flow [2025-03-09 06:35:26,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 96 transitions, 350 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-03-09 06:35:26,738 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 188 flow [2025-03-09 06:35:26,738 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2025-03-09 06:35:26,739 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2025-03-09 06:35:26,739 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 188 flow [2025-03-09 06:35:26,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:26,739 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:26,739 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:35:26,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:35:26,740 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-03-09 06:35:26,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:26,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1102508597, now seen corresponding path program 1 times [2025-03-09 06:35:26,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:26,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255131549] [2025-03-09 06:35:26,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:26,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:26,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:35:26,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:35:26,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:26,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:35:26,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:35:26,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:35:26,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255131549] [2025-03-09 06:35:26,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255131549] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:35:26,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:35:26,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:35:26,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759227264] [2025-03-09 06:35:26,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:35:26,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:35:26,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:35:26,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:35:26,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:35:26,864 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 82 [2025-03-09 06:35:26,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:26,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:35:26,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 82 [2025-03-09 06:35:26,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:35:27,221 INFO L124 PetriNetUnfolderBase]: 1791/3813 cut-off events. [2025-03-09 06:35:27,222 INFO L125 PetriNetUnfolderBase]: For 560/560 co-relation queries the response was YES. [2025-03-09 06:35:27,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7043 conditions, 3813 events. 1791/3813 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 27853 event pairs, 43 based on Foata normal form. 7/3546 useless extension candidates. Maximal degree in co-relation 996. Up to 2575 conditions per place. [2025-03-09 06:35:27,241 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 63 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2025-03-09 06:35:27,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 97 transitions, 375 flow [2025-03-09 06:35:27,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:35:27,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:35:27,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2025-03-09 06:35:27,243 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5317073170731708 [2025-03-09 06:35:27,243 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 188 flow. Second operand 5 states and 218 transitions. [2025-03-09 06:35:27,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 97 transitions, 375 flow [2025-03-09 06:35:27,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 97 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:35:27,248 INFO L231 Difference]: Finished difference. Result has 81 places, 72 transitions, 192 flow [2025-03-09 06:35:27,249 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=81, PETRI_TRANSITIONS=72} [2025-03-09 06:35:27,249 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 8 predicate places. [2025-03-09 06:35:27,250 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 72 transitions, 192 flow [2025-03-09 06:35:27,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:27,250 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:27,250 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2025-03-09 06:35:27,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:35:27,250 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-03-09 06:35:27,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:27,251 INFO L85 PathProgramCache]: Analyzing trace with hash -670090426, now seen corresponding path program 1 times [2025-03-09 06:35:27,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:27,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190516551] [2025-03-09 06:35:27,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:27,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:27,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:35:27,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:35:27,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:27,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:35:27,285 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:35:27,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:35:27,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:35:27,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:27,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:35:27,307 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:35:27,307 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 06:35:27,307 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2025-03-09 06:35:27,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2025-03-09 06:35:27,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2025-03-09 06:35:27,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2025-03-09 06:35:27,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2025-03-09 06:35:27,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2025-03-09 06:35:27,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2025-03-09 06:35:27,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2025-03-09 06:35:27,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2025-03-09 06:35:27,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2025-03-09 06:35:27,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2025-03-09 06:35:27,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:35:27,308 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-03-09 06:35:27,308 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 06:35:27,308 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-09 06:35:27,333 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-09 06:35:27,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 96 transitions, 219 flow [2025-03-09 06:35:27,357 INFO L124 PetriNetUnfolderBase]: 46/279 cut-off events. [2025-03-09 06:35:27,358 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-03-09 06:35:27,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 279 events. 46/279 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1286 event pairs, 1 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 200. Up to 12 conditions per place. [2025-03-09 06:35:27,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 96 transitions, 219 flow [2025-03-09 06:35:27,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 96 transitions, 219 flow [2025-03-09 06:35:27,360 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:35:27,361 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;@2f449c6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:35:27,361 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-03-09 06:35:27,363 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:35:27,363 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-03-09 06:35:27,363 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:35:27,363 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:27,363 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 06:35:27,363 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-03-09 06:35:27,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:27,363 INFO L85 PathProgramCache]: Analyzing trace with hash 631653665, now seen corresponding path program 1 times [2025-03-09 06:35:27,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:27,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133014612] [2025-03-09 06:35:27,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:27,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:27,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:35:27,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:35:27,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:27,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:35:27,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:35:27,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:35:27,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133014612] [2025-03-09 06:35:27,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133014612] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:35:27,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:35:27,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:35:27,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938216302] [2025-03-09 06:35:27,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:35:27,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:35:27,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:35:27,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:35:27,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:35:27,426 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2025-03-09 06:35:27,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 96 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:27,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:35:27,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2025-03-09 06:35:27,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:35:29,980 INFO L124 PetriNetUnfolderBase]: 23689/40447 cut-off events. [2025-03-09 06:35:29,980 INFO L125 PetriNetUnfolderBase]: For 751/751 co-relation queries the response was YES. [2025-03-09 06:35:30,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74225 conditions, 40447 events. 23689/40447 cut-off events. For 751/751 co-relation queries the response was YES. Maximal size of possible extension queue 1154. Compared 345687 event pairs, 14755 based on Foata normal form. 5056/42242 useless extension candidates. Maximal degree in co-relation 8064. Up to 33341 conditions per place. [2025-03-09 06:35:30,149 INFO L140 encePairwiseOnDemand]: 78/96 looper letters, 61 selfloop transitions, 3 changer transitions 1/99 dead transitions. [2025-03-09 06:35:30,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 99 transitions, 355 flow [2025-03-09 06:35:30,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:35:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:35:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2025-03-09 06:35:30,150 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2025-03-09 06:35:30,150 INFO L175 Difference]: Start difference. First operand has 86 places, 96 transitions, 219 flow. Second operand 4 states and 220 transitions. [2025-03-09 06:35:30,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 99 transitions, 355 flow [2025-03-09 06:35:30,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 99 transitions, 355 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:35:30,154 INFO L231 Difference]: Finished difference. Result has 91 places, 85 transitions, 217 flow [2025-03-09 06:35:30,154 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=217, PETRI_PLACES=91, PETRI_TRANSITIONS=85} [2025-03-09 06:35:30,155 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2025-03-09 06:35:30,155 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 85 transitions, 217 flow [2025-03-09 06:35:30,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:30,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:30,155 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:35:30,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 06:35:30,155 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-03-09 06:35:30,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:30,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1980790513, now seen corresponding path program 1 times [2025-03-09 06:35:30,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:30,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054997468] [2025-03-09 06:35:30,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:30,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:30,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:35:30,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:35:30,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:30,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:35:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:35:30,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:35:30,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054997468] [2025-03-09 06:35:30,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054997468] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:35:30,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:35:30,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:35:30,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971585636] [2025-03-09 06:35:30,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:35:30,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:35:30,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:35:30,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:35:30,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:35:30,246 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2025-03-09 06:35:30,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 85 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:30,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:35:30,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2025-03-09 06:35:30,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:35:32,434 INFO L124 PetriNetUnfolderBase]: 21571/38328 cut-off events. [2025-03-09 06:35:32,435 INFO L125 PetriNetUnfolderBase]: For 2010/2010 co-relation queries the response was YES. [2025-03-09 06:35:32,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70691 conditions, 38328 events. 21571/38328 cut-off events. For 2010/2010 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 345622 event pairs, 1456 based on Foata normal form. 392/36003 useless extension candidates. Maximal degree in co-relation 10245. Up to 23839 conditions per place. [2025-03-09 06:35:32,673 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 93 selfloop transitions, 6 changer transitions 0/133 dead transitions. [2025-03-09 06:35:32,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 133 transitions, 509 flow [2025-03-09 06:35:32,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:35:32,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:35:32,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 304 transitions. [2025-03-09 06:35:32,675 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2025-03-09 06:35:32,675 INFO L175 Difference]: Start difference. First operand has 91 places, 85 transitions, 217 flow. Second operand 6 states and 304 transitions. [2025-03-09 06:35:32,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 133 transitions, 509 flow [2025-03-09 06:35:32,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 133 transitions, 507 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:35:32,680 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 223 flow [2025-03-09 06:35:32,680 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2025-03-09 06:35:32,681 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 7 predicate places. [2025-03-09 06:35:32,681 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 223 flow [2025-03-09 06:35:32,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:32,682 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:32,682 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-03-09 06:35:32,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 06:35:32,682 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-03-09 06:35:32,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:32,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1274963179, now seen corresponding path program 1 times [2025-03-09 06:35:32,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:32,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072490402] [2025-03-09 06:35:32,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:32,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:32,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:35:32,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:35:32,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:32,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:35:32,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:35:32,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:35:32,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072490402] [2025-03-09 06:35:32,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072490402] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:35:32,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:35:32,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:35:32,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632329073] [2025-03-09 06:35:32,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:35:32,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:35:32,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:35:32,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:35:32,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:35:32,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2025-03-09 06:35:32,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:32,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:35:32,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2025-03-09 06:35:32,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:35:34,782 INFO L124 PetriNetUnfolderBase]: 20605/36641 cut-off events. [2025-03-09 06:35:34,783 INFO L125 PetriNetUnfolderBase]: For 3283/3283 co-relation queries the response was YES. [2025-03-09 06:35:34,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68445 conditions, 36641 events. 20605/36641 cut-off events. For 3283/3283 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 329114 event pairs, 1169 based on Foata normal form. 392/34835 useless extension candidates. Maximal degree in co-relation 9236. Up to 25210 conditions per place. [2025-03-09 06:35:34,953 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 80 selfloop transitions, 6 changer transitions 0/120 dead transitions. [2025-03-09 06:35:34,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 120 transitions, 465 flow [2025-03-09 06:35:34,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:35:34,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:35:34,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 221 transitions. [2025-03-09 06:35:34,954 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5755208333333334 [2025-03-09 06:35:34,955 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 223 flow. Second operand 4 states and 221 transitions. [2025-03-09 06:35:34,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 120 transitions, 465 flow [2025-03-09 06:35:34,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 120 transitions, 449 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-03-09 06:35:34,961 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 223 flow [2025-03-09 06:35:34,962 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2025-03-09 06:35:34,964 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2025-03-09 06:35:34,965 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 223 flow [2025-03-09 06:35:34,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:34,965 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:34,965 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:35:34,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 06:35:34,965 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-03-09 06:35:34,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:34,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1276024159, now seen corresponding path program 1 times [2025-03-09 06:35:34,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:34,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28350322] [2025-03-09 06:35:34,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:34,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:34,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:35:34,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:35:34,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:34,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:35:35,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:35:35,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:35:35,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28350322] [2025-03-09 06:35:35,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28350322] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:35:35,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:35:35,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:35:35,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72163017] [2025-03-09 06:35:35,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:35:35,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:35:35,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:35:35,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:35:35,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:35:35,049 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2025-03-09 06:35:35,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 223 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 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) [2025-03-09 06:35:35,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:35:35,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2025-03-09 06:35:35,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:35:36,833 INFO L124 PetriNetUnfolderBase]: 20500/35899 cut-off events. [2025-03-09 06:35:36,833 INFO L125 PetriNetUnfolderBase]: For 4768/4768 co-relation queries the response was YES. [2025-03-09 06:35:36,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67493 conditions, 35899 events. 20500/35899 cut-off events. For 4768/4768 co-relation queries the response was YES. Maximal size of possible extension queue 1048. Compared 311642 event pairs, 5906 based on Foata normal form. 7/33854 useless extension candidates. Maximal degree in co-relation 7469. Up to 28508 conditions per place. [2025-03-09 06:35:37,000 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 73 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2025-03-09 06:35:37,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 111 transitions, 443 flow [2025-03-09 06:35:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:35:37,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:35:37,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 248 transitions. [2025-03-09 06:35:37,001 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2025-03-09 06:35:37,001 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 223 flow. Second operand 5 states and 248 transitions. [2025-03-09 06:35:37,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 111 transitions, 443 flow [2025-03-09 06:35:37,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 111 transitions, 431 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:35:37,007 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 235 flow [2025-03-09 06:35:37,007 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2025-03-09 06:35:37,007 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2025-03-09 06:35:37,008 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 235 flow [2025-03-09 06:35:37,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 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) [2025-03-09 06:35:37,008 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:37,008 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:35:37,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 06:35:37,008 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-03-09 06:35:37,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:37,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1829209103, now seen corresponding path program 1 times [2025-03-09 06:35:37,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:37,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101100386] [2025-03-09 06:35:37,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:37,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:37,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:35:37,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:35:37,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:37,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:35:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:35:37,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:35:37,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101100386] [2025-03-09 06:35:37,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101100386] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:35:37,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:35:37,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:35:37,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274681247] [2025-03-09 06:35:37,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:35:37,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:35:37,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:35:37,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:35:37,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:35:37,087 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2025-03-09 06:35:37,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:37,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:35:37,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2025-03-09 06:35:37,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:35:40,478 INFO L124 PetriNetUnfolderBase]: 37308/64003 cut-off events. [2025-03-09 06:35:40,478 INFO L125 PetriNetUnfolderBase]: For 4487/4487 co-relation queries the response was YES. [2025-03-09 06:35:40,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118730 conditions, 64003 events. 37308/64003 cut-off events. For 4487/4487 co-relation queries the response was YES. Maximal size of possible extension queue 1830. Compared 589523 event pairs, 21578 based on Foata normal form. 392/60678 useless extension candidates. Maximal degree in co-relation 83516. Up to 31483 conditions per place. [2025-03-09 06:35:40,760 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 101 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2025-03-09 06:35:40,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 137 transitions, 547 flow [2025-03-09 06:35:40,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:35:40,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:35:40,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 240 transitions. [2025-03-09 06:35:40,762 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-03-09 06:35:40,762 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 235 flow. Second operand 4 states and 240 transitions. [2025-03-09 06:35:40,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 137 transitions, 547 flow [2025-03-09 06:35:40,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 137 transitions, 541 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:35:40,766 INFO L231 Difference]: Finished difference. Result has 96 places, 87 transitions, 253 flow [2025-03-09 06:35:40,766 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=96, PETRI_TRANSITIONS=87} [2025-03-09 06:35:40,766 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 10 predicate places. [2025-03-09 06:35:40,767 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 87 transitions, 253 flow [2025-03-09 06:35:40,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:40,767 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:40,767 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2025-03-09 06:35:40,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 06:35:40,767 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-03-09 06:35:40,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:40,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2018391361, now seen corresponding path program 1 times [2025-03-09 06:35:40,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:40,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993458714] [2025-03-09 06:35:40,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:40,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:40,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:35:40,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:35:40,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:40,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:35:40,797 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:35:40,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:35:40,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:35:40,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:40,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:35:40,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:35:40,816 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 06:35:40,816 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2025-03-09 06:35:40,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2025-03-09 06:35:40,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2025-03-09 06:35:40,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2025-03-09 06:35:40,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2025-03-09 06:35:40,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2025-03-09 06:35:40,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2025-03-09 06:35:40,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2025-03-09 06:35:40,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2025-03-09 06:35:40,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2025-03-09 06:35:40,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2025-03-09 06:35:40,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-09 06:35:40,817 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-03-09 06:35:40,818 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 06:35:40,818 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-09 06:35:40,845 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-09 06:35:40,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 110 transitions, 260 flow [2025-03-09 06:35:40,868 INFO L124 PetriNetUnfolderBase]: 69/413 cut-off events. [2025-03-09 06:35:40,868 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2025-03-09 06:35:40,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 413 events. 69/413 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2029 event pairs, 6 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 307. Up to 32 conditions per place. [2025-03-09 06:35:40,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 110 transitions, 260 flow [2025-03-09 06:35:40,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 110 transitions, 260 flow [2025-03-09 06:35:40,875 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:35:40,876 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;@2f449c6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:35:40,876 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-03-09 06:35:40,878 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:35:40,879 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-03-09 06:35:40,879 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:35:40,879 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:40,879 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 06:35:40,879 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-03-09 06:35:40,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:40,879 INFO L85 PathProgramCache]: Analyzing trace with hash 736638747, now seen corresponding path program 1 times [2025-03-09 06:35:40,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:40,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351416326] [2025-03-09 06:35:40,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:40,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:40,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:35:40,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:35:40,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:40,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:35:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:35:40,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:35:40,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351416326] [2025-03-09 06:35:40,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351416326] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:35:40,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:35:40,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:35:40,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019087990] [2025-03-09 06:35:40,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:35:40,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:35:40,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:35:40,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:35:40,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:35:40,938 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 110 [2025-03-09 06:35:40,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 110 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:35:40,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:35:40,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 110 [2025-03-09 06:35:40,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand