./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.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.graphml --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 200a1054abe3180675ad7323ac963ef4172b7cd0baaabe20a569e3117ba88111 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 09:18:42,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 09:18:42,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 09:18:42,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 09:18:42,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 09:18:42,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 09:18:42,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 09:18:42,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 09:18:42,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 09:18:42,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 09:18:42,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 09:18:42,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 09:18:42,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 09:18:42,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 09:18:42,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 09:18:42,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 09:18:42,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 09:18:42,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 09:18:42,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 09:18:42,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 09:18:42,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 09:18:42,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 09:18:42,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 09:18:42,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 09:18:42,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 09:18:42,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 09:18:42,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 09:18:42,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 09:18:42,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 09:18:42,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 09:18:42,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 09:18:42,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 09:18:42,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 09:18:42,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 09:18:42,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 09:18:42,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 09:18:42,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 09:18:42,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 09:18:42,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 09:18:42,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 09:18:42,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 09:18:42,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 09:18:42,137 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 09:18:42,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 09:18:42,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 09:18:42,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 09:18:42,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 09:18:42,140 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 09:18:42,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 09:18:42,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 09:18:42,140 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 09:18:42,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 09:18:42,141 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 09:18:42,141 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 09:18:42,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 09:18:42,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 09:18:42,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 09:18:42,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 09:18:42,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 09:18:42,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 09:18:42,142 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 09:18:42,142 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 09:18:42,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 09:18:42,143 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 09:18:42,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 09:18:42,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 09:18:42,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 09:18:42,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 09:18:42,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:18:42,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 09:18:42,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 09:18:42,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 09:18:42,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 09:18:42,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 09:18:42,145 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 09:18:42,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 09:18:42,145 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 09:18:42,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 09:18:42,145 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 09:18:42,145 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 200a1054abe3180675ad7323ac963ef4172b7cd0baaabe20a569e3117ba88111 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 09:18:42,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 09:18:42,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 09:18:42,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 09:18:42,398 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 09:18:42,398 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 09:18:42,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i [2023-08-30 09:18:43,301 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 09:18:43,689 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 09:18:43,690 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i [2023-08-30 09:18:43,724 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b539994/ed4e40cd13dd486fbae65b8ce842d936/FLAG33280b0c9 [2023-08-30 09:18:43,744 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b539994/ed4e40cd13dd486fbae65b8ce842d936 [2023-08-30 09:18:43,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 09:18:43,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 09:18:43,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 09:18:43,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 09:18:43,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 09:18:43,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:18:43" (1/1) ... [2023-08-30 09:18:43,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779c566c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:43, skipping insertion in model container [2023-08-30 09:18:43,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:18:43" (1/1) ... [2023-08-30 09:18:43,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 09:18:43,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 09:18:44,091 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i[5469,5482] [2023-08-30 09:18:45,938 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 09:18:46,276 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 09:18:46,279 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 09:18:46,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:18:46,356 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 09:18:46,375 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i[5469,5482] [2023-08-30 09:18:46,530 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 09:18:46,570 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 09:18:46,570 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 09:18:46,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:18:47,156 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 09:18:47,157 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 09:18:47,157 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 09:18:47,157 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 09:18:47,157 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 09:18:47,157 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 09:18:47,157 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 09:18:47,162 INFO L208 MainTranslator]: Completed translation [2023-08-30 09:18:47,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:47 WrapperNode [2023-08-30 09:18:47,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 09:18:47,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 09:18:47,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 09:18:47,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 09:18:47,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:47" (1/1) ... [2023-08-30 09:18:47,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:47" (1/1) ... [2023-08-30 09:18:47,308 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 56, statements flattened = 765 [2023-08-30 09:18:47,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 09:18:47,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 09:18:47,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 09:18:47,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 09:18:47,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:47" (1/1) ... [2023-08-30 09:18:47,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:47" (1/1) ... [2023-08-30 09:18:47,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:47" (1/1) ... [2023-08-30 09:18:47,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:47" (1/1) ... [2023-08-30 09:18:47,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:47" (1/1) ... [2023-08-30 09:18:47,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:47" (1/1) ... [2023-08-30 09:18:47,372 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:47" (1/1) ... [2023-08-30 09:18:47,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:47" (1/1) ... [2023-08-30 09:18:47,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 09:18:47,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 09:18:47,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 09:18:47,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 09:18:47,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:47" (1/1) ... [2023-08-30 09:18:47,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:18:47,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:18:47,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 09:18:47,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 09:18:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 09:18:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 09:18:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 09:18:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 09:18:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 09:18:47,445 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 09:18:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 09:18:47,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 09:18:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_open [2023-08-30 09:18:47,446 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_open [2023-08-30 09:18:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-08-30 09:18:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 09:18:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 09:18:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 09:18:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 09:18:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 09:18:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 09:18:47,449 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 09:18:47,839 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 09:18:47,841 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 09:18:48,486 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 09:18:48,494 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 09:18:48,494 INFO L302 CfgBuilder]: Removed 27 assume(true) statements. [2023-08-30 09:18:48,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:18:48 BoogieIcfgContainer [2023-08-30 09:18:48,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 09:18:48,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 09:18:48,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 09:18:48,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 09:18:48,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:18:43" (1/3) ... [2023-08-30 09:18:48,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:18:48, skipping insertion in model container [2023-08-30 09:18:48,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:47" (2/3) ... [2023-08-30 09:18:48,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:18:48, skipping insertion in model container [2023-08-30 09:18:48,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:18:48" (3/3) ... [2023-08-30 09:18:48,502 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i [2023-08-30 09:18:48,507 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 09:18:48,513 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 09:18:48,513 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-08-30 09:18:48,513 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 09:18:48,613 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 09:18:48,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 815 places, 864 transitions, 1744 flow [2023-08-30 09:18:48,842 INFO L130 PetriNetUnfolder]: 56/862 cut-off events. [2023-08-30 09:18:48,842 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 09:18:48,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 862 events. 56/862 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1252 event pairs, 0 based on Foata normal form. 0/778 useless extension candidates. Maximal degree in co-relation 695. Up to 9 conditions per place. [2023-08-30 09:18:48,851 INFO L82 GeneralOperation]: Start removeDead. Operand has 815 places, 864 transitions, 1744 flow [2023-08-30 09:18:48,861 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 805 places, 854 transitions, 1717 flow [2023-08-30 09:18:48,864 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:18:48,873 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 805 places, 854 transitions, 1717 flow [2023-08-30 09:18:48,875 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 805 places, 854 transitions, 1717 flow [2023-08-30 09:18:48,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 805 places, 854 transitions, 1717 flow [2023-08-30 09:18:48,996 INFO L130 PetriNetUnfolder]: 56/854 cut-off events. [2023-08-30 09:18:48,996 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:18:49,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862 conditions, 854 events. 56/854 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1183 event pairs, 0 based on Foata normal form. 0/770 useless extension candidates. Maximal degree in co-relation 695. Up to 9 conditions per place. [2023-08-30 09:18:49,006 INFO L119 LiptonReduction]: Number of co-enabled transitions 18148 [2023-08-30 09:19:59,508 WARN L222 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 305 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:20:04,983 WARN L222 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 255 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:20:12,744 WARN L222 SmtUtils]: Spent 7.76s on a formula simplification that was a NOOP. DAG size: 308 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:20:17,948 WARN L222 SmtUtils]: Spent 5.20s on a formula simplification that was a NOOP. DAG size: 258 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:22:03,980 WARN L222 SmtUtils]: Spent 1.74m on a formula simplification. DAG size of input: 597 DAG size of output: 595 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:22:55,331 WARN L222 SmtUtils]: Spent 51.34s on a formula simplification that was a NOOP. DAG size: 551 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:23:51,143 WARN L222 SmtUtils]: Spent 55.81s on a formula simplification. DAG size of input: 600 DAG size of output: 598 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:24:16,382 WARN L222 SmtUtils]: Spent 25.23s on a formula simplification that was a NOOP. DAG size: 554 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:25:11,200 WARN L222 SmtUtils]: Spent 51.26s on a formula simplification that was a NOOP. DAG size: 585 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:25:30,343 WARN L222 SmtUtils]: Spent 19.14s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:26:33,083 WARN L222 SmtUtils]: Spent 1.05m on a formula simplification that was a NOOP. DAG size: 588 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:27:01,086 WARN L222 SmtUtils]: Spent 28.00s on a formula simplification that was a NOOP. DAG size: 584 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:27:13,126 INFO L134 LiptonReduction]: Checked pairs total: 17243 [2023-08-30 09:27:13,126 INFO L136 LiptonReduction]: Total number of compositions: 1011 [2023-08-30 09:27:13,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:27:13,138 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1a23702b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:27:13,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-08-30 09:27:13,144 INFO L130 PetriNetUnfolder]: 2/5 cut-off events. [2023-08-30 09:27:13,145 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:27:13,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:13,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 09:27:13,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 09:27:13,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:13,149 INFO L85 PathProgramCache]: Analyzing trace with hash 3206001, now seen corresponding path program 1 times [2023-08-30 09:27:13,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:13,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409397142] [2023-08-30 09:27:13,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:13,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:13,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:13,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409397142] [2023-08-30 09:27:13,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409397142] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:27:13,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:27:13,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:27:13,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305553038] [2023-08-30 09:27:13,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:27:13,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 09:27:13,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:13,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 09:27:13,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 09:27:13,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 810 out of 1875 [2023-08-30 09:27:13,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 82 transitions, 173 flow. Second operand has 2 states, 2 states have (on average 811.5) internal successors, (1623), 2 states have internal predecessors, (1623), 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) [2023-08-30 09:27:13,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:13,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 810 of 1875 [2023-08-30 09:27:13,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:13,863 INFO L130 PetriNetUnfolder]: 217/410 cut-off events. [2023-08-30 09:27:13,863 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-08-30 09:27:13,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 410 events. 217/410 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1444 event pairs, 207 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 670. Up to 411 conditions per place. [2023-08-30 09:27:13,865 INFO L137 encePairwiseOnDemand]: 1841/1875 looper letters, 42 selfloop transitions, 0 changer transitions 6/48 dead transitions. [2023-08-30 09:27:13,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 201 flow [2023-08-30 09:27:13,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 09:27:13,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 09:27:13,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1702 transitions. [2023-08-30 09:27:13,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45386666666666664 [2023-08-30 09:27:13,882 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1702 transitions. [2023-08-30 09:27:13,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1702 transitions. [2023-08-30 09:27:13,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:13,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1702 transitions. [2023-08-30 09:27:13,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 851.0) internal successors, (1702), 2 states have internal predecessors, (1702), 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) [2023-08-30 09:27:13,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1875.0) internal successors, (5625), 3 states have internal predecessors, (5625), 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) [2023-08-30 09:27:13,903 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1875.0) internal successors, (5625), 3 states have internal predecessors, (5625), 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) [2023-08-30 09:27:13,904 INFO L175 Difference]: Start difference. First operand has 66 places, 82 transitions, 173 flow. Second operand 2 states and 1702 transitions. [2023-08-30 09:27:13,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 201 flow [2023-08-30 09:27:13,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 196 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 09:27:13,908 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 88 flow [2023-08-30 09:27:13,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1875, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-08-30 09:27:13,912 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -23 predicate places. [2023-08-30 09:27:13,913 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 88 flow [2023-08-30 09:27:13,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 811.5) internal successors, (1623), 2 states have internal predecessors, (1623), 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) [2023-08-30 09:27:13,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:13,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 09:27:13,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 09:27:13,914 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 09:27:13,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:13,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1213780977, now seen corresponding path program 1 times [2023-08-30 09:27:13,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:13,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966031088] [2023-08-30 09:27:13,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:13,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:14,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:14,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966031088] [2023-08-30 09:27:14,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966031088] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:27:14,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:27:14,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:27:14,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489638819] [2023-08-30 09:27:14,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:27:14,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:27:14,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:14,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:27:14,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:27:14,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 800 out of 1875 [2023-08-30 09:27:14,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 801.6666666666666) internal successors, (2405), 3 states have internal predecessors, (2405), 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) [2023-08-30 09:27:14,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:14,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 800 of 1875 [2023-08-30 09:27:14,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:14,433 INFO L130 PetriNetUnfolder]: 243/469 cut-off events. [2023-08-30 09:27:14,433 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 09:27:14,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 469 events. 243/469 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1814 event pairs, 234 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 960. Up to 238 conditions per place. [2023-08-30 09:27:14,435 INFO L137 encePairwiseOnDemand]: 1869/1875 looper letters, 53 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2023-08-30 09:27:14,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 57 transitions, 236 flow [2023-08-30 09:27:14,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:27:14,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:27:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2459 transitions. [2023-08-30 09:27:14,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371555555555556 [2023-08-30 09:27:14,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2459 transitions. [2023-08-30 09:27:14,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2459 transitions. [2023-08-30 09:27:14,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:14,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2459 transitions. [2023-08-30 09:27:14,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 819.6666666666666) internal successors, (2459), 3 states have internal predecessors, (2459), 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) [2023-08-30 09:27:14,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1875.0) internal successors, (7500), 4 states have internal predecessors, (7500), 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) [2023-08-30 09:27:14,454 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1875.0) internal successors, (7500), 4 states have internal predecessors, (7500), 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) [2023-08-30 09:27:14,455 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 88 flow. Second operand 3 states and 2459 transitions. [2023-08-30 09:27:14,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 57 transitions, 236 flow [2023-08-30 09:27:14,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:27:14,456 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 92 flow [2023-08-30 09:27:14,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1875, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2023-08-30 09:27:14,458 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -29 predicate places. [2023-08-30 09:27:14,458 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 92 flow [2023-08-30 09:27:14,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 801.6666666666666) internal successors, (2405), 3 states have internal predecessors, (2405), 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) [2023-08-30 09:27:14,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:14,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 09:27:14,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 09:27:14,461 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 09:27:14,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:14,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1027508655, now seen corresponding path program 1 times [2023-08-30 09:27:14,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:14,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169132036] [2023-08-30 09:27:14,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:14,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:14,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:14,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:14,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169132036] [2023-08-30 09:27:14,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169132036] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:27:14,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:27:14,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:27:14,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104501679] [2023-08-30 09:27:14,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:27:14,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:27:14,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:14,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:27:14,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:27:14,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 803 out of 1875 [2023-08-30 09:27:14,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 805.0) internal successors, (2415), 3 states have internal predecessors, (2415), 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) [2023-08-30 09:27:14,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:14,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 803 of 1875 [2023-08-30 09:27:14,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:15,246 INFO L130 PetriNetUnfolder]: 243/470 cut-off events. [2023-08-30 09:27:15,246 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 09:27:15,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 470 events. 243/470 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1829 event pairs, 234 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 966. Up to 469 conditions per place. [2023-08-30 09:27:15,249 INFO L137 encePairwiseOnDemand]: 1870/1875 looper letters, 38 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2023-08-30 09:27:15,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 176 flow [2023-08-30 09:27:15,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:27:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:27:15,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2452 transitions. [2023-08-30 09:27:15,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43591111111111114 [2023-08-30 09:27:15,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2452 transitions. [2023-08-30 09:27:15,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2452 transitions. [2023-08-30 09:27:15,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:15,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2452 transitions. [2023-08-30 09:27:15,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 817.3333333333334) internal successors, (2452), 3 states have internal predecessors, (2452), 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) [2023-08-30 09:27:15,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1875.0) internal successors, (7500), 4 states have internal predecessors, (7500), 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) [2023-08-30 09:27:15,271 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1875.0) internal successors, (7500), 4 states have internal predecessors, (7500), 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) [2023-08-30 09:27:15,271 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 92 flow. Second operand 3 states and 2452 transitions. [2023-08-30 09:27:15,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 176 flow [2023-08-30 09:27:15,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:27:15,273 INFO L231 Difference]: Finished difference. Result has 38 places, 41 transitions, 101 flow [2023-08-30 09:27:15,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1875, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=38, PETRI_TRANSITIONS=41} [2023-08-30 09:27:15,274 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -28 predicate places. [2023-08-30 09:27:15,274 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 101 flow [2023-08-30 09:27:15,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 805.0) internal successors, (2415), 3 states have internal predecessors, (2415), 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) [2023-08-30 09:27:15,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:15,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:27:15,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 09:27:15,276 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 09:27:15,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:15,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1788000405, now seen corresponding path program 1 times [2023-08-30 09:27:15,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:15,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309113296] [2023-08-30 09:27:15,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:15,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:15,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:15,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309113296] [2023-08-30 09:27:15,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309113296] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:27:15,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951124998] [2023-08-30 09:27:15,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:15,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:27:15,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:27:15,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:27:15,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 09:27:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:15,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:27:15,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:27:15,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:15,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:27:15,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951124998] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:27:15,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:27:15,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 09:27:15,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998829403] [2023-08-30 09:27:15,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:27:15,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 09:27:15,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:15,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 09:27:15,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:27:15,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 803 out of 1875 [2023-08-30 09:27:15,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 41 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 804.75) internal successors, (3219), 4 states have internal predecessors, (3219), 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) [2023-08-30 09:27:15,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:15,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 803 of 1875 [2023-08-30 09:27:15,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:16,327 INFO L130 PetriNetUnfolder]: 243/469 cut-off events. [2023-08-30 09:27:16,327 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 09:27:16,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 469 events. 243/469 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1776 event pairs, 234 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 966. Up to 242 conditions per place. [2023-08-30 09:27:16,329 INFO L137 encePairwiseOnDemand]: 1871/1875 looper letters, 54 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-30 09:27:16,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 249 flow [2023-08-30 09:27:16,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:27:16,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:27:16,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3270 transitions. [2023-08-30 09:27:16,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436 [2023-08-30 09:27:16,335 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3270 transitions. [2023-08-30 09:27:16,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3270 transitions. [2023-08-30 09:27:16,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:16,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3270 transitions. [2023-08-30 09:27:16,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 817.5) internal successors, (3270), 4 states have internal predecessors, (3270), 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) [2023-08-30 09:27:16,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1875.0) internal successors, (9375), 5 states have internal predecessors, (9375), 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) [2023-08-30 09:27:16,349 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1875.0) internal successors, (9375), 5 states have internal predecessors, (9375), 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) [2023-08-30 09:27:16,349 INFO L175 Difference]: Start difference. First operand has 38 places, 41 transitions, 101 flow. Second operand 4 states and 3270 transitions. [2023-08-30 09:27:16,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 249 flow [2023-08-30 09:27:16,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 244 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 09:27:16,350 INFO L231 Difference]: Finished difference. Result has 39 places, 40 transitions, 98 flow [2023-08-30 09:27:16,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1875, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=39, PETRI_TRANSITIONS=40} [2023-08-30 09:27:16,351 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -27 predicate places. [2023-08-30 09:27:16,351 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 40 transitions, 98 flow [2023-08-30 09:27:16,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 804.75) internal successors, (3219), 4 states have internal predecessors, (3219), 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) [2023-08-30 09:27:16,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:16,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:27:16,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 09:27:16,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:27:16,562 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 09:27:16,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:16,562 INFO L85 PathProgramCache]: Analyzing trace with hash 401961888, now seen corresponding path program 1 times [2023-08-30 09:27:16,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:16,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950177766] [2023-08-30 09:27:16,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:16,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:17,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:17,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:17,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950177766] [2023-08-30 09:27:17,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950177766] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:27:17,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:27:17,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:27:17,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070163903] [2023-08-30 09:27:17,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:27:17,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:27:17,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:17,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:27:17,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:27:17,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 800 out of 1875 [2023-08-30 09:27:17,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 40 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 803.0) internal successors, (2409), 3 states have internal predecessors, (2409), 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) [2023-08-30 09:27:17,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:17,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 800 of 1875 [2023-08-30 09:27:17,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:17,719 INFO L130 PetriNetUnfolder]: 243/470 cut-off events. [2023-08-30 09:27:17,719 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 09:27:17,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 470 events. 243/470 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1779 event pairs, 234 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 969. Up to 470 conditions per place. [2023-08-30 09:27:17,721 INFO L137 encePairwiseOnDemand]: 1871/1875 looper letters, 39 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-30 09:27:17,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 182 flow [2023-08-30 09:27:17,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:27:17,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:27:17,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2442 transitions. [2023-08-30 09:27:17,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4341333333333333 [2023-08-30 09:27:17,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2442 transitions. [2023-08-30 09:27:17,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2442 transitions. [2023-08-30 09:27:17,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:17,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2442 transitions. [2023-08-30 09:27:17,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 814.0) internal successors, (2442), 3 states have internal predecessors, (2442), 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) [2023-08-30 09:27:17,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1875.0) internal successors, (7500), 4 states have internal predecessors, (7500), 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) [2023-08-30 09:27:17,735 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1875.0) internal successors, (7500), 4 states have internal predecessors, (7500), 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) [2023-08-30 09:27:17,735 INFO L175 Difference]: Start difference. First operand has 39 places, 40 transitions, 98 flow. Second operand 3 states and 2442 transitions. [2023-08-30 09:27:17,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 182 flow [2023-08-30 09:27:17,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:27:17,737 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 107 flow [2023-08-30 09:27:17,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1875, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2023-08-30 09:27:17,740 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -26 predicate places. [2023-08-30 09:27:17,740 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 107 flow [2023-08-30 09:27:17,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 803.0) internal successors, (2409), 3 states have internal predecessors, (2409), 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) [2023-08-30 09:27:17,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:17,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:27:17,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 09:27:17,741 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 09:27:17,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:17,741 INFO L85 PathProgramCache]: Analyzing trace with hash -615678914, now seen corresponding path program 1 times [2023-08-30 09:27:17,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:17,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001739112] [2023-08-30 09:27:17,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:17,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:18,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:18,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:18,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001739112] [2023-08-30 09:27:18,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001739112] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:27:18,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898876748] [2023-08-30 09:27:18,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:18,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:27:18,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:27:18,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:27:18,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 09:27:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:19,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 09:27:19,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:27:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:27:19,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:27:19,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898876748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:27:19,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:27:19,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 09:27:19,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177281181] [2023-08-30 09:27:19,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:27:19,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:27:19,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:19,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:27:19,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:27:19,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 805 out of 1875 [2023-08-30 09:27:19,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 808.3333333333334) internal successors, (2425), 3 states have internal predecessors, (2425), 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) [2023-08-30 09:27:19,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:19,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 805 of 1875 [2023-08-30 09:27:19,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:19,430 INFO L130 PetriNetUnfolder]: 213/416 cut-off events. [2023-08-30 09:27:19,431 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 09:27:19,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 416 events. 213/416 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1540 event pairs, 84 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 865. Up to 216 conditions per place. [2023-08-30 09:27:19,432 INFO L137 encePairwiseOnDemand]: 1873/1875 looper letters, 46 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-08-30 09:27:19,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 214 flow [2023-08-30 09:27:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:27:19,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:27:19,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2461 transitions. [2023-08-30 09:27:19,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43751111111111113 [2023-08-30 09:27:19,437 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2461 transitions. [2023-08-30 09:27:19,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2461 transitions. [2023-08-30 09:27:19,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:19,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2461 transitions. [2023-08-30 09:27:19,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 820.3333333333334) internal successors, (2461), 3 states have internal predecessors, (2461), 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) [2023-08-30 09:27:19,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1875.0) internal successors, (7500), 4 states have internal predecessors, (7500), 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) [2023-08-30 09:27:19,446 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1875.0) internal successors, (7500), 4 states have internal predecessors, (7500), 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) [2023-08-30 09:27:19,446 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 107 flow. Second operand 3 states and 2461 transitions. [2023-08-30 09:27:19,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 214 flow [2023-08-30 09:27:19,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 210 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 09:27:19,448 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 103 flow [2023-08-30 09:27:19,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1875, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-08-30 09:27:19,448 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -26 predicate places. [2023-08-30 09:27:19,449 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 103 flow [2023-08-30 09:27:19,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 808.3333333333334) internal successors, (2425), 3 states have internal predecessors, (2425), 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) [2023-08-30 09:27:19,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:19,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:27:19,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 09:27:19,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 09:27:19,661 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_pc8736x_gpio_changeErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 09:27:19,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:19,662 INFO L85 PathProgramCache]: Analyzing trace with hash -615678587, now seen corresponding path program 1 times [2023-08-30 09:27:19,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:19,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840276257] [2023-08-30 09:27:19,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:19,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:20,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:20,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840276257] [2023-08-30 09:27:20,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840276257] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:27:20,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317721370] [2023-08-30 09:27:20,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:20,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:27:20,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:27:20,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:27:20,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 09:27:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:20,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 09:27:20,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:27:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:20,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:27:21,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:21,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317721370] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:27:21,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:27:21,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 09:27:21,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580918586] [2023-08-30 09:27:21,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:27:21,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:27:21,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:21,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:27:21,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:27:21,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 798 out of 1875 [2023-08-30 09:27:21,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 103 flow. Second operand has 8 states, 8 states have (on average 800.0) internal successors, (6400), 8 states have internal predecessors, (6400), 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) [2023-08-30 09:27:21,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:21,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 798 of 1875 [2023-08-30 09:27:21,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:21,717 INFO L130 PetriNetUnfolder]: 213/421 cut-off events. [2023-08-30 09:27:21,717 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 09:27:21,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 421 events. 213/421 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1439 event pairs, 204 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 900. Up to 416 conditions per place. [2023-08-30 09:27:21,719 INFO L137 encePairwiseOnDemand]: 1867/1875 looper letters, 37 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2023-08-30 09:27:21,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 209 flow [2023-08-30 09:27:21,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:27:21,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:27:21,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4842 transitions. [2023-08-30 09:27:21,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4304 [2023-08-30 09:27:21,727 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4842 transitions. [2023-08-30 09:27:21,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4842 transitions. [2023-08-30 09:27:21,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:21,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4842 transitions. [2023-08-30 09:27:21,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 807.0) internal successors, (4842), 6 states have internal predecessors, (4842), 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) [2023-08-30 09:27:21,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1875.0) internal successors, (13125), 7 states have internal predecessors, (13125), 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) [2023-08-30 09:27:21,745 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1875.0) internal successors, (13125), 7 states have internal predecessors, (13125), 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) [2023-08-30 09:27:21,745 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 103 flow. Second operand 6 states and 4842 transitions. [2023-08-30 09:27:21,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 209 flow [2023-08-30 09:27:21,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:27:21,749 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 168 flow [2023-08-30 09:27:21,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1875, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-08-30 09:27:21,749 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -19 predicate places. [2023-08-30 09:27:21,749 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 168 flow [2023-08-30 09:27:21,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 800.0) internal successors, (6400), 8 states have internal predecessors, (6400), 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) [2023-08-30 09:27:21,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:21,750 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:27:21,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 09:27:21,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:27:21,960 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_pc8736x_gpio_changeErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 09:27:21,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:21,961 INFO L85 PathProgramCache]: Analyzing trace with hash 838970471, now seen corresponding path program 2 times [2023-08-30 09:27:21,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:21,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557251448] [2023-08-30 09:27:21,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:21,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:22,674 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:22,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:22,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557251448] [2023-08-30 09:27:22,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557251448] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:27:22,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568729803] [2023-08-30 09:27:22,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 09:27:22,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:27:22,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:27:22,675 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:27:22,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 09:27:24,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 09:27:24,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:27:24,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 09:27:24,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:27:24,940 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:24,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:27:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:25,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568729803] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:27:25,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:27:25,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-30 09:27:25,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143907178] [2023-08-30 09:27:25,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:27:25,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 09:27:25,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:27:25,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 09:27:25,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-08-30 09:27:25,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 796 out of 1875 [2023-08-30 09:27:25,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 168 flow. Second operand has 17 states, 17 states have (on average 797.4705882352941) internal successors, (13557), 17 states have internal predecessors, (13557), 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) [2023-08-30 09:27:25,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:27:25,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 796 of 1875 [2023-08-30 09:27:25,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:27:27,751 INFO L130 PetriNetUnfolder]: 213/430 cut-off events. [2023-08-30 09:27:27,751 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-08-30 09:27:27,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 430 events. 213/430 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1382 event pairs, 204 based on Foata normal form. 9/385 useless extension candidates. Maximal degree in co-relation 958. Up to 416 conditions per place. [2023-08-30 09:27:27,753 INFO L137 encePairwiseOnDemand]: 1867/1875 looper letters, 37 selfloop transitions, 17 changer transitions 0/54 dead transitions. [2023-08-30 09:27:27,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 324 flow [2023-08-30 09:27:27,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 09:27:27,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 09:27:27,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 9623 transitions. [2023-08-30 09:27:27,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4276888888888889 [2023-08-30 09:27:27,767 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 9623 transitions. [2023-08-30 09:27:27,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 9623 transitions. [2023-08-30 09:27:27,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:27:27,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 9623 transitions. [2023-08-30 09:27:27,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 801.9166666666666) internal successors, (9623), 12 states have internal predecessors, (9623), 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) [2023-08-30 09:27:27,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1875.0) internal successors, (24375), 13 states have internal predecessors, (24375), 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) [2023-08-30 09:27:27,799 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1875.0) internal successors, (24375), 13 states have internal predecessors, (24375), 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) [2023-08-30 09:27:27,799 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 168 flow. Second operand 12 states and 9623 transitions. [2023-08-30 09:27:27,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 324 flow [2023-08-30 09:27:27,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 314 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 09:27:27,802 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 302 flow [2023-08-30 09:27:27,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1875, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=302, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2023-08-30 09:27:27,804 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -3 predicate places. [2023-08-30 09:27:27,804 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 302 flow [2023-08-30 09:27:27,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 797.4705882352941) internal successors, (13557), 17 states have internal predecessors, (13557), 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) [2023-08-30 09:27:27,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:27:27,806 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:27:27,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 09:27:28,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:27:28,023 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting whoop_wrapper_pc8736x_gpio_changeErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 09:27:28,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:27:28,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1783138393, now seen corresponding path program 3 times [2023-08-30 09:27:28,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:27:28,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303895488] [2023-08-30 09:27:28,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:27:28,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:27:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:27:28,894 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:27:28,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:27:28,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303895488] [2023-08-30 09:27:28,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303895488] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:27:28,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349787701] [2023-08-30 09:27:28,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 09:27:28,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:27:28,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:27:28,896 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:27:28,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 09:28:01,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 09:28:01,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:28:01,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-30 09:28:02,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:28:02,242 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:28:02,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:28:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:28:02,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349787701] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:28:02,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:28:02,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-08-30 09:28:02,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875597979] [2023-08-30 09:28:02,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:28:02,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-30 09:28:02,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:28:02,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-30 09:28:02,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2023-08-30 09:28:05,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 796 out of 1875 [2023-08-30 09:28:05,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 302 flow. Second operand has 35 states, 35 states have (on average 797.2285714285714) internal successors, (27903), 35 states have internal predecessors, (27903), 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) [2023-08-30 09:28:05,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:28:05,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 796 of 1875 [2023-08-30 09:28:05,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:28:24,852 WARN L222 SmtUtils]: Spent 12.53s on a formula simplification. DAG size of input: 67 DAG size of output: 47 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 09:28:39,581 WARN L222 SmtUtils]: Spent 8.50s on a formula simplification. DAG size of input: 61 DAG size of output: 43 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 09:28:49,152 WARN L222 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 55 DAG size of output: 39 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 09:28:59,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 09:29:01,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 09:29:02,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 09:29:04,413 INFO L130 PetriNetUnfolder]: 213/448 cut-off events. [2023-08-30 09:29:04,414 INFO L131 PetriNetUnfolder]: For 538/538 co-relation queries the response was YES. [2023-08-30 09:29:04,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 448 events. 213/448 cut-off events. For 538/538 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1352 event pairs, 204 based on Foata normal form. 18/412 useless extension candidates. Maximal degree in co-relation 1085. Up to 411 conditions per place. [2023-08-30 09:29:04,416 INFO L137 encePairwiseOnDemand]: 1867/1875 looper letters, 33 selfloop transitions, 39 changer transitions 0/72 dead transitions. [2023-08-30 09:29:04,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 72 transitions, 578 flow [2023-08-30 09:29:04,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 09:29:04,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 09:29:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 20007 transitions. [2023-08-30 09:29:04,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.426816 [2023-08-30 09:29:04,441 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 20007 transitions. [2023-08-30 09:29:04,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 20007 transitions. [2023-08-30 09:29:04,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:29:04,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 20007 transitions. [2023-08-30 09:29:04,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 800.28) internal successors, (20007), 25 states have internal predecessors, (20007), 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) [2023-08-30 09:29:04,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 1875.0) internal successors, (48750), 26 states have internal predecessors, (48750), 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) [2023-08-30 09:29:04,502 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 1875.0) internal successors, (48750), 26 states have internal predecessors, (48750), 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) [2023-08-30 09:29:04,502 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 302 flow. Second operand 25 states and 20007 transitions. [2023-08-30 09:29:04,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 72 transitions, 578 flow [2023-08-30 09:29:04,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 72 transitions, 502 flow, removed 36 selfloop flow, removed 2 redundant places. [2023-08-30 09:29:04,507 INFO L231 Difference]: Finished difference. Result has 85 places, 72 transitions, 440 flow [2023-08-30 09:29:04,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1875, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=440, PETRI_PLACES=85, PETRI_TRANSITIONS=72} [2023-08-30 09:29:04,508 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 19 predicate places. [2023-08-30 09:29:04,508 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 72 transitions, 440 flow [2023-08-30 09:29:04,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 797.2285714285714) internal successors, (27903), 35 states have internal predecessors, (27903), 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) [2023-08-30 09:29:04,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:29:04,512 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:29:04,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 09:29:04,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:29:04,730 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting whoop_wrapper_pc8736x_gpio_changeErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 09:29:04,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:29:04,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1800846887, now seen corresponding path program 4 times [2023-08-30 09:29:04,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:29:04,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032873058] [2023-08-30 09:29:04,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:29:04,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:29:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:29:06,792 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:29:06,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:29:06,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032873058] [2023-08-30 09:29:06,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032873058] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:29:06,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867264513] [2023-08-30 09:29:06,792 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 09:29:06,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:29:06,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:29:06,794 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:29:06,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 09:29:09,991 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 09:29:09,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:29:10,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-30 09:29:10,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:29:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:29:10,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:29:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:29:12,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867264513] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:29:12,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:29:12,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 69 [2023-08-30 09:29:12,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216099543] [2023-08-30 09:29:12,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:29:12,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-08-30 09:29:12,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:29:12,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-08-30 09:29:12,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1202, Invalid=3628, Unknown=0, NotChecked=0, Total=4830 [2023-08-30 09:29:16,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 798 out of 1875 [2023-08-30 09:29:16,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 72 transitions, 440 flow. Second operand has 70 states, 70 states have (on average 799.1142857142858) internal successors, (55938), 70 states have internal predecessors, (55938), 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) [2023-08-30 09:29:16,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:29:16,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 798 of 1875 [2023-08-30 09:29:16,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:31:05,998 WARN L222 SmtUtils]: Spent 1.09m on a formula simplification that was a NOOP. DAG size: 95 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 09:31:08,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 09:32:54,517 WARN L222 SmtUtils]: Spent 1.13m on a formula simplification that was a NOOP. DAG size: 91 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Killed by 15