./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_current_pc8736x_gpio_set.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_current_pc8736x_gpio_set.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 fe55b2f9c4aab8ef897b3db507488ea7950c808c5052f30fdbd219f5b35357b3 --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 09:17:59,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 09:17:59,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 09:18:00,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 09:18:00,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 09:18:00,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 09:18:00,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 09:18:00,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 09:18:00,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 09:18:00,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 09:18:00,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 09:18:00,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 09:18:00,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 09:18:00,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 09:18:00,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 09:18:00,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 09:18:00,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 09:18:00,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 09:18:00,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 09:18:00,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 09:18:00,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 09:18:00,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 09:18:00,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 09:18:00,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 09:18:00,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 09:18:00,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 09:18:00,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 09:18:00,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 09:18:00,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 09:18:00,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 09:18:00,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 09:18:00,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 09:18:00,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 09:18:00,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 09:18:00,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 09:18:00,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 09:18:00,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 09:18:00,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 09:18:00,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 09:18:00,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 09:18:00,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 09:18:00,088 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 09:18:00,127 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 09:18:00,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 09:18:00,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 09:18:00,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 09:18:00,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 09:18:00,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 09:18:00,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 09:18:00,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 09:18:00,131 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 09:18:00,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 09:18:00,132 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 09:18:00,132 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 09:18:00,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 09:18:00,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 09:18:00,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 09:18:00,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 09:18:00,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 09:18:00,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 09:18:00,133 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 09:18:00,133 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 09:18:00,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 09:18:00,134 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 09:18:00,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 09:18:00,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 09:18:00,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 09:18:00,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 09:18:00,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:18:00,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 09:18:00,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 09:18:00,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 09:18:00,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 09:18:00,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 09:18:00,136 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 09:18:00,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 09:18:00,136 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 09:18:00,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 09:18:00,137 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 09:18:00,137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe55b2f9c4aab8ef897b3db507488ea7950c808c5052f30fdbd219f5b35357b3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 09:18:00,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 09:18:00,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 09:18:00,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 09:18:00,499 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 09:18:00,499 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 09:18:00,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_current_pc8736x_gpio_set.i [2023-08-30 09:18:01,741 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 09:18:02,187 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 09:18:02,187 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_current_pc8736x_gpio_set.i [2023-08-30 09:18:02,227 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/822f9c8a3/029872a313e24341b8de9aa0c21dfe06/FLAG05720ef2d [2023-08-30 09:18:02,243 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/822f9c8a3/029872a313e24341b8de9aa0c21dfe06 [2023-08-30 09:18:02,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 09:18:02,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 09:18:02,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 09:18:02,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 09:18:02,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 09:18:02,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:18:02" (1/1) ... [2023-08-30 09:18:02,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25c1f1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:02, skipping insertion in model container [2023-08-30 09:18:02,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:18:02" (1/1) ... [2023-08-30 09:18:02,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 09:18:02,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 09:18:02,690 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_current_pc8736x_gpio_set.i[5469,5482] [2023-08-30 09:18:06,020 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 09:18:06,424 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 09:18:06,425 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 09:18:06,490 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:18:06,504 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 09:18:06,529 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_current_pc8736x_gpio_set.i[5469,5482] [2023-08-30 09:18:06,715 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 09:18:06,807 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 09:18:06,807 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 09:18:06,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:18:07,486 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 09:18:07,486 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 09:18:07,486 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 09:18:07,487 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 09:18:07,487 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 09:18:07,487 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 09:18:07,487 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 09:18:07,493 INFO L208 MainTranslator]: Completed translation [2023-08-30 09:18:07,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:07 WrapperNode [2023-08-30 09:18:07,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 09:18:07,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 09:18:07,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 09:18:07,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 09:18:07,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:07" (1/1) ... [2023-08-30 09:18:07,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:07" (1/1) ... [2023-08-30 09:18:07,662 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 51, statements flattened = 721 [2023-08-30 09:18:07,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 09:18:07,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 09:18:07,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 09:18:07,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 09:18:07,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:07" (1/1) ... [2023-08-30 09:18:07,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:07" (1/1) ... [2023-08-30 09:18:07,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:07" (1/1) ... [2023-08-30 09:18:07,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:07" (1/1) ... [2023-08-30 09:18:07,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:07" (1/1) ... [2023-08-30 09:18:07,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:07" (1/1) ... [2023-08-30 09:18:07,747 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:07" (1/1) ... [2023-08-30 09:18:07,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:07" (1/1) ... [2023-08-30 09:18:07,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 09:18:07,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 09:18:07,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 09:18:07,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 09:18:07,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:07" (1/1) ... [2023-08-30 09:18:07,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:18:07,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:18:07,810 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 09:18:07,835 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 09:18:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 09:18:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 09:18:07,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 09:18:07,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 09:18:07,847 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_current [2023-08-30 09:18:07,847 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_current [2023-08-30 09:18:07,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 09:18:07,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 09:18:07,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-08-30 09:18:07,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 09:18:07,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 09:18:07,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 09:18:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 09:18:07,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 09:18:07,862 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_set [2023-08-30 09:18:07,862 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_set [2023-08-30 09:18:07,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 09:18:07,863 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 09:18:08,359 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 09:18:08,360 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 09:18:09,013 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 09:18:09,025 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 09:18:09,026 INFO L302 CfgBuilder]: Removed 25 assume(true) statements. [2023-08-30 09:18:09,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:18:09 BoogieIcfgContainer [2023-08-30 09:18:09,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 09:18:09,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 09:18:09,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 09:18:09,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 09:18:09,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:18:02" (1/3) ... [2023-08-30 09:18:09,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e42140a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:18:09, skipping insertion in model container [2023-08-30 09:18:09,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:18:07" (2/3) ... [2023-08-30 09:18:09,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e42140a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:18:09, skipping insertion in model container [2023-08-30 09:18:09,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:18:09" (3/3) ... [2023-08-30 09:18:09,040 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_current_pc8736x_gpio_set.i [2023-08-30 09:18:09,045 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 09:18:09,053 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 09:18:09,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-08-30 09:18:09,054 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 09:18:09,173 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 09:18:09,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 769 places, 814 transitions, 1644 flow [2023-08-30 09:18:09,456 INFO L130 PetriNetUnfolder]: 52/812 cut-off events. [2023-08-30 09:18:09,456 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 09:18:09,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 812 events. 52/812 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1094 event pairs, 0 based on Foata normal form. 0/732 useless extension candidates. Maximal degree in co-relation 766. Up to 9 conditions per place. [2023-08-30 09:18:09,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 769 places, 814 transitions, 1644 flow [2023-08-30 09:18:09,473 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 759 places, 804 transitions, 1617 flow [2023-08-30 09:18:09,476 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:18:09,484 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 759 places, 804 transitions, 1617 flow [2023-08-30 09:18:09,486 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 759 places, 804 transitions, 1617 flow [2023-08-30 09:18:09,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 759 places, 804 transitions, 1617 flow [2023-08-30 09:18:09,639 INFO L130 PetriNetUnfolder]: 52/804 cut-off events. [2023-08-30 09:18:09,639 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:18:09,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 812 conditions, 804 events. 52/804 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1043 event pairs, 0 based on Foata normal form. 0/724 useless extension candidates. Maximal degree in co-relation 766. Up to 9 conditions per place. [2023-08-30 09:18:09,647 INFO L119 LiptonReduction]: Number of co-enabled transitions 10560 [2023-08-30 09:19:10,749 WARN L222 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 453 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:19:16,587 WARN L222 SmtUtils]: Spent 5.83s on a formula simplification that was a NOOP. DAG size: 453 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:19:21,887 WARN L222 SmtUtils]: Spent 5.30s on a formula simplification that was a NOOP. DAG size: 453 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:19:27,347 WARN L222 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 453 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:21:29,952 WARN L222 SmtUtils]: Spent 2.01m on a formula simplification. DAG size of input: 619 DAG size of output: 617 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:22:16,037 WARN L222 SmtUtils]: Spent 46.06s 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 09:24:37,339 WARN L222 SmtUtils]: Spent 2.35m on a formula simplification. DAG size of input: 619 DAG size of output: 617 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 09:25:05,773 WARN L222 SmtUtils]: Spent 28.42s 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 09:26:06,243 WARN L222 SmtUtils]: Spent 58.59s 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 09:26:33,326 WARN L222 SmtUtils]: Spent 27.08s 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 09:27:32,999 WARN L222 SmtUtils]: Spent 59.67s 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 09:28:32,826 WARN L222 SmtUtils]: Spent 59.82s 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 09:28:40,883 INFO L134 LiptonReduction]: Checked pairs total: 9629 [2023-08-30 09:28:40,883 INFO L136 LiptonReduction]: Total number of compositions: 967 [2023-08-30 09:28:40,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:28:40,900 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;@4b09160a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:28:40,900 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-08-30 09:28:40,908 INFO L130 PetriNetUnfolder]: 2/5 cut-off events. [2023-08-30 09:28:40,908 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:28:40,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:28:40,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 09:28:40,910 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 09:28:40,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:28:40,914 INFO L85 PathProgramCache]: Analyzing trace with hash 3000231, now seen corresponding path program 1 times [2023-08-30 09:28:40,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:28:40,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611644530] [2023-08-30 09:28:40,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:28:40,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:28:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:28:41,404 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 09:28:41,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:28:41,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611644530] [2023-08-30 09:28:41,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611644530] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:28:41,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:28:41,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:28:41,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521630200] [2023-08-30 09:28:41,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:28:41,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 09:28:41,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:28:41,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 09:28:41,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 09:28:41,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 764 out of 1781 [2023-08-30 09:28:41,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 77 transitions, 163 flow. Second operand has 2 states, 2 states have (on average 765.5) internal successors, (1531), 2 states have internal predecessors, (1531), 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 09:28:41,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:28:41,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 764 of 1781 [2023-08-30 09:28:41,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:28:41,722 INFO L130 PetriNetUnfolder]: 115/232 cut-off events. [2023-08-30 09:28:41,723 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 09:28:41,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 232 events. 115/232 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 745 event pairs, 105 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 416. Up to 233 conditions per place. [2023-08-30 09:28:41,725 INFO L137 encePairwiseOnDemand]: 1748/1781 looper letters, 36 selfloop transitions, 0 changer transitions 8/44 dead transitions. [2023-08-30 09:28:41,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 185 flow [2023-08-30 09:28:41,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 09:28:41,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 09:28:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1605 transitions. [2023-08-30 09:28:41,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45058955642897247 [2023-08-30 09:28:41,757 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1605 transitions. [2023-08-30 09:28:41,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1605 transitions. [2023-08-30 09:28:41,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:28:41,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1605 transitions. [2023-08-30 09:28:41,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 802.5) internal successors, (1605), 2 states have internal predecessors, (1605), 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 09:28:41,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1781.0) internal successors, (5343), 3 states have internal predecessors, (5343), 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 09:28:41,788 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1781.0) internal successors, (5343), 3 states have internal predecessors, (5343), 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 09:28:41,790 INFO L175 Difference]: Start difference. First operand has 62 places, 77 transitions, 163 flow. Second operand 2 states and 1605 transitions. [2023-08-30 09:28:41,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 185 flow [2023-08-30 09:28:41,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 180 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 09:28:41,796 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 75 flow [2023-08-30 09:28:41,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1781, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=75, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2023-08-30 09:28:41,802 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -23 predicate places. [2023-08-30 09:28:41,802 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 75 flow [2023-08-30 09:28:41,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 765.5) internal successors, (1531), 2 states have internal predecessors, (1531), 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 09:28:41,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:28:41,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 09:28:41,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 09:28:41,804 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 09:28:41,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:28:41,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1411535181, now seen corresponding path program 1 times [2023-08-30 09:28:41,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:28:41,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898085545] [2023-08-30 09:28:41,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:28:41,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:28:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:28:42,120 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 09:28:42,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:28:42,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898085545] [2023-08-30 09:28:42,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898085545] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:28:42,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:28:42,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:28:42,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294185137] [2023-08-30 09:28:42,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:28:42,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:28:42,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:28:42,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:28:42,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:28:42,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 754 out of 1781 [2023-08-30 09:28:42,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 755.6666666666666) internal successors, (2267), 3 states have internal predecessors, (2267), 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 09:28:42,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:28:42,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 754 of 1781 [2023-08-30 09:28:42,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:28:42,818 INFO L130 PetriNetUnfolder]: 103/213 cut-off events. [2023-08-30 09:28:42,818 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:28:42,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 213 events. 103/213 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 717 event pairs, 94 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 452. Up to 110 conditions per place. [2023-08-30 09:28:42,820 INFO L137 encePairwiseOnDemand]: 1775/1781 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-08-30 09:28:42,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 186 flow [2023-08-30 09:28:42,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:28:42,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:28:42,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2309 transitions. [2023-08-30 09:28:42,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4321542204753884 [2023-08-30 09:28:42,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2309 transitions. [2023-08-30 09:28:42,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2309 transitions. [2023-08-30 09:28:42,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:28:42,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2309 transitions. [2023-08-30 09:28:42,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 769.6666666666666) internal successors, (2309), 3 states have internal predecessors, (2309), 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 09:28:42,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1781.0) internal successors, (7124), 4 states have internal predecessors, (7124), 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 09:28:42,844 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1781.0) internal successors, (7124), 4 states have internal predecessors, (7124), 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 09:28:42,844 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 75 flow. Second operand 3 states and 2309 transitions. [2023-08-30 09:28:42,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 186 flow [2023-08-30 09:28:42,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 45 transitions, 186 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:28:42,846 INFO L231 Difference]: Finished difference. Result has 31 places, 34 transitions, 79 flow [2023-08-30 09:28:42,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1781, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=31, PETRI_TRANSITIONS=34} [2023-08-30 09:28:42,847 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -31 predicate places. [2023-08-30 09:28:42,847 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 34 transitions, 79 flow [2023-08-30 09:28:42,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 755.6666666666666) internal successors, (2267), 3 states have internal predecessors, (2267), 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 09:28:42,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:28:42,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 09:28:42,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 09:28:42,849 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 09:28:42,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:28:42,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1409926465, now seen corresponding path program 1 times [2023-08-30 09:28:42,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:28:42,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988024210] [2023-08-30 09:28:42,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:28:42,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:28:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:28:43,725 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 09:28:43,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:28:43,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988024210] [2023-08-30 09:28:43,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988024210] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:28:43,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:28:43,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:28:43,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046550007] [2023-08-30 09:28:43,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:28:43,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:28:43,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:28:43,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:28:43,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:28:43,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 754 out of 1781 [2023-08-30 09:28:43,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 755.6666666666666) internal successors, (2267), 3 states have internal predecessors, (2267), 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 09:28:43,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:28:43,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 754 of 1781 [2023-08-30 09:28:43,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:28:44,266 INFO L130 PetriNetUnfolder]: 103/214 cut-off events. [2023-08-30 09:28:44,266 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:28:44,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 214 events. 103/214 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 717 event pairs, 94 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 458. Up to 214 conditions per place. [2023-08-30 09:28:44,268 INFO L137 encePairwiseOnDemand]: 1777/1781 looper letters, 33 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-08-30 09:28:44,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 35 transitions, 151 flow [2023-08-30 09:28:44,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:28:44,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:28:44,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2299 transitions. [2023-08-30 09:28:44,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4302826127643646 [2023-08-30 09:28:44,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2299 transitions. [2023-08-30 09:28:44,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2299 transitions. [2023-08-30 09:28:44,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:28:44,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2299 transitions. [2023-08-30 09:28:44,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 766.3333333333334) internal successors, (2299), 3 states have internal predecessors, (2299), 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 09:28:44,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1781.0) internal successors, (7124), 4 states have internal predecessors, (7124), 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 09:28:44,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1781.0) internal successors, (7124), 4 states have internal predecessors, (7124), 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 09:28:44,293 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 79 flow. Second operand 3 states and 2299 transitions. [2023-08-30 09:28:44,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 35 transitions, 151 flow [2023-08-30 09:28:44,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 143 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:28:44,295 INFO L231 Difference]: Finished difference. Result has 32 places, 35 transitions, 85 flow [2023-08-30 09:28:44,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1781, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=32, PETRI_TRANSITIONS=35} [2023-08-30 09:28:44,297 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -30 predicate places. [2023-08-30 09:28:44,299 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 35 transitions, 85 flow [2023-08-30 09:28:44,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 755.6666666666666) internal successors, (2267), 3 states have internal predecessors, (2267), 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 09:28:44,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:28:44,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 09:28:44,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 09:28:44,302 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 09:28:44,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:28:44,302 INFO L85 PathProgramCache]: Analyzing trace with hash -868630306, now seen corresponding path program 1 times [2023-08-30 09:28:44,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:28:44,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129676378] [2023-08-30 09:28:44,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:28:44,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:28:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:28:44,978 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 09:28:44,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:28:44,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129676378] [2023-08-30 09:28:44,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129676378] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:28:44,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077591136] [2023-08-30 09:28:44,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:28:44,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:28:44,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:28:44,985 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 09:28:44,989 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 09:28:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:28:45,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:28:45,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:28:45,830 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 09:28:45,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:28:45,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077591136] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:28:45,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:28:45,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 09:28:45,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633449422] [2023-08-30 09:28:45,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:28:45,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:28:45,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:28:45,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:28:45,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:28:45,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 759 out of 1781 [2023-08-30 09:28:45,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 35 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 761.0) internal successors, (2283), 3 states have internal predecessors, (2283), 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 09:28:45,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:28:45,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 759 of 1781 [2023-08-30 09:28:45,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:28:46,623 INFO L130 PetriNetUnfolder]: 48/102 cut-off events. [2023-08-30 09:28:46,623 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:28:46,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 102 events. 48/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 332 event pairs, 2 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 221. Up to 68 conditions per place. [2023-08-30 09:28:46,624 INFO L137 encePairwiseOnDemand]: 1779/1781 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 09:28:46,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 173 flow [2023-08-30 09:28:46,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:28:46,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:28:46,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2316 transitions. [2023-08-30 09:28:46,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.433464345873105 [2023-08-30 09:28:46,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2316 transitions. [2023-08-30 09:28:46,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2316 transitions. [2023-08-30 09:28:46,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:28:46,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2316 transitions. [2023-08-30 09:28:46,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 772.0) internal successors, (2316), 3 states have internal predecessors, (2316), 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 09:28:46,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1781.0) internal successors, (7124), 4 states have internal predecessors, (7124), 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 09:28:46,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1781.0) internal successors, (7124), 4 states have internal predecessors, (7124), 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 09:28:46,659 INFO L175 Difference]: Start difference. First operand has 32 places, 35 transitions, 85 flow. Second operand 3 states and 2316 transitions. [2023-08-30 09:28:46,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 173 flow [2023-08-30 09:28:46,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 39 transitions, 169 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 09:28:46,661 INFO L231 Difference]: Finished difference. Result has 32 places, 34 transitions, 81 flow [2023-08-30 09:28:46,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1781, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=32, PETRI_TRANSITIONS=34} [2023-08-30 09:28:46,661 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -30 predicate places. [2023-08-30 09:28:46,662 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 34 transitions, 81 flow [2023-08-30 09:28:46,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 761.0) internal successors, (2283), 3 states have internal predecessors, (2283), 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 09:28:46,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:28:46,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 09:28:46,673 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 09:28:46,875 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 09:28:46,875 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_pc8736x_gpio_setErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 09:28:46,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:28:46,876 INFO L85 PathProgramCache]: Analyzing trace with hash -868630084, now seen corresponding path program 1 times [2023-08-30 09:28:46,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:28:46,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095355157] [2023-08-30 09:28:46,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:28:46,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:28:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:28:47,649 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 09:28:47,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:28:47,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095355157] [2023-08-30 09:28:47,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095355157] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:28:47,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245845617] [2023-08-30 09:28:47,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:28:47,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:28:47,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:28:47,653 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 09:28:47,655 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 09:28:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:28:48,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 09:28:48,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:28:48,774 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 09:28:48,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:28:49,034 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 09:28:49,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245845617] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:28:49,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:28:49,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 09:28:49,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601385894] [2023-08-30 09:28:49,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:28:49,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:28:49,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:28:49,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:28:49,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:28:49,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 750 out of 1781 [2023-08-30 09:28:49,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 34 transitions, 81 flow. Second operand has 8 states, 8 states have (on average 751.5) internal successors, (6012), 8 states have internal predecessors, (6012), 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 09:28:49,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:28:49,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 750 of 1781 [2023-08-30 09:28:49,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:28:49,824 INFO L130 PetriNetUnfolder]: 48/107 cut-off events. [2023-08-30 09:28:49,825 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 09:28:49,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 107 events. 48/107 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 295 event pairs, 38 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 240. Up to 102 conditions per place. [2023-08-30 09:28:49,825 INFO L137 encePairwiseOnDemand]: 1773/1781 looper letters, 31 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2023-08-30 09:28:49,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 175 flow [2023-08-30 09:28:49,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:28:49,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:28:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4549 transitions. [2023-08-30 09:28:49,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42569717387235634 [2023-08-30 09:28:49,836 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4549 transitions. [2023-08-30 09:28:49,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4549 transitions. [2023-08-30 09:28:49,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:28:49,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4549 transitions. [2023-08-30 09:28:49,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 758.1666666666666) internal successors, (4549), 6 states have internal predecessors, (4549), 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 09:28:49,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1781.0) internal successors, (12467), 7 states have internal predecessors, (12467), 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 09:28:49,860 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1781.0) internal successors, (12467), 7 states have internal predecessors, (12467), 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 09:28:49,860 INFO L175 Difference]: Start difference. First operand has 32 places, 34 transitions, 81 flow. Second operand 6 states and 4549 transitions. [2023-08-30 09:28:49,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 175 flow [2023-08-30 09:28:49,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:28:49,862 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 146 flow [2023-08-30 09:28:49,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1781, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2023-08-30 09:28:49,863 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -23 predicate places. [2023-08-30 09:28:49,863 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 146 flow [2023-08-30 09:28:49,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 751.5) internal successors, (6012), 8 states have internal predecessors, (6012), 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 09:28:49,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:28:49,865 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 09:28:49,886 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 09:28:50,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:28:50,075 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_pc8736x_gpio_setErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 09:28:50,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:28:50,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1672891229, now seen corresponding path program 2 times [2023-08-30 09:28:50,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:28:50,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367291668] [2023-08-30 09:28:50,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:28:50,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:28:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:28:50,952 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 09:28:50,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:28:50,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367291668] [2023-08-30 09:28:50,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367291668] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:28:50,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167312570] [2023-08-30 09:28:50,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 09:28:50,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:28:50,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:28:50,957 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 09:28:50,960 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 09:28:52,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 09:28:52,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:28:52,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 09:28:52,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:28:52,271 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 09:28:52,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:28:52,573 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 09:28:52,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167312570] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:28:52,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:28:52,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-30 09:28:52,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253232483] [2023-08-30 09:28:52,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:28:52,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 09:28:52,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:28:52,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 09:28:52,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-08-30 09:28:53,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 750 out of 1781 [2023-08-30 09:28:53,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 146 flow. Second operand has 17 states, 17 states have (on average 751.2352941176471) internal successors, (12771), 17 states have internal predecessors, (12771), 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 09:28:53,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:28:53,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 750 of 1781 [2023-08-30 09:28:53,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:28:55,214 INFO L130 PetriNetUnfolder]: 48/116 cut-off events. [2023-08-30 09:28:55,214 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-30 09:28:55,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 116 events. 48/116 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 311 event pairs, 38 based on Foata normal form. 9/101 useless extension candidates. Maximal degree in co-relation 298. Up to 102 conditions per place. [2023-08-30 09:28:55,215 INFO L137 encePairwiseOnDemand]: 1773/1781 looper letters, 31 selfloop transitions, 17 changer transitions 0/48 dead transitions. [2023-08-30 09:28:55,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 290 flow [2023-08-30 09:28:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 09:28:55,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 09:28:55,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 9066 transitions. [2023-08-30 09:28:55,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42419988770353734 [2023-08-30 09:28:55,235 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 9066 transitions. [2023-08-30 09:28:55,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 9066 transitions. [2023-08-30 09:28:55,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:28:55,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 9066 transitions. [2023-08-30 09:28:55,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 755.5) internal successors, (9066), 12 states have internal predecessors, (9066), 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 09:28:55,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1781.0) internal successors, (23153), 13 states have internal predecessors, (23153), 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 09:28:55,313 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1781.0) internal successors, (23153), 13 states have internal predecessors, (23153), 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 09:28:55,313 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 146 flow. Second operand 12 states and 9066 transitions. [2023-08-30 09:28:55,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 290 flow [2023-08-30 09:28:55,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 280 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 09:28:55,318 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 280 flow [2023-08-30 09:28:55,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1781, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=280, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2023-08-30 09:28:55,320 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -7 predicate places. [2023-08-30 09:28:55,320 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 280 flow [2023-08-30 09:28:55,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 751.2352941176471) internal successors, (12771), 17 states have internal predecessors, (12771), 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 09:28:55,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:28:55,324 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1] [2023-08-30 09:28:55,336 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 09:28:55,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:28:55,534 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_pc8736x_gpio_setErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 09:28:55,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:28:55,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1907925251, now seen corresponding path program 3 times [2023-08-30 09:28:55,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:28:55,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888234706] [2023-08-30 09:28:55,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:28:55,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:28:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:28:56,868 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 09:28:56,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:28:56,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888234706] [2023-08-30 09:28:56,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888234706] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:28:56,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184087639] [2023-08-30 09:28:56,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 09:28:56,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:28:56,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:28:56,873 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 09:28:56,876 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 09:29:07,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 09:29:07,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:29:07,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-30 09:29:07,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:29:07,581 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 09:29:07,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:29:08,427 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 09:29:08,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184087639] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:29:08,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:29:08,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-08-30 09:29:08,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197144020] [2023-08-30 09:29:08,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:29:08,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-30 09:29:08,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:29:08,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-30 09:29:08,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=871, Unknown=0, NotChecked=0, Total=1190 [2023-08-30 09:29:11,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 750 out of 1781 [2023-08-30 09:29:11,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 280 flow. Second operand has 35 states, 35 states have (on average 751.1142857142858) internal successors, (26289), 35 states have internal predecessors, (26289), 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 09:29:11,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:29:11,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 750 of 1781 [2023-08-30 09:29:11,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:29:32,742 WARN L222 SmtUtils]: Spent 12.08s on a formula simplification. DAG size of input: 61 DAG size of output: 47 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 09:29:45,949 WARN L222 SmtUtils]: Spent 9.59s on a formula simplification. DAG size of input: 55 DAG size of output: 43 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 09:29:54,708 WARN L222 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 49 DAG size of output: 39 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 09:30:03,235 INFO L130 PetriNetUnfolder]: 48/134 cut-off events. [2023-08-30 09:30:03,235 INFO L131 PetriNetUnfolder]: For 530/530 co-relation queries the response was YES. [2023-08-30 09:30:03,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 134 events. 48/134 cut-off events. For 530/530 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 296 event pairs, 38 based on Foata normal form. 18/128 useless extension candidates. Maximal degree in co-relation 425. Up to 97 conditions per place. [2023-08-30 09:30:03,236 INFO L137 encePairwiseOnDemand]: 1773/1781 looper letters, 27 selfloop transitions, 39 changer transitions 0/66 dead transitions. [2023-08-30 09:30:03,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 66 transitions, 544 flow [2023-08-30 09:30:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 09:30:03,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 09:30:03,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 18852 transitions. [2023-08-30 09:30:03,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42340258281864124 [2023-08-30 09:30:03,267 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 18852 transitions. [2023-08-30 09:30:03,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 18852 transitions. [2023-08-30 09:30:03,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:30:03,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 18852 transitions. [2023-08-30 09:30:03,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 754.08) internal successors, (18852), 25 states have internal predecessors, (18852), 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 09:30:03,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 1781.0) internal successors, (46306), 26 states have internal predecessors, (46306), 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 09:30:03,345 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 1781.0) internal successors, (46306), 26 states have internal predecessors, (46306), 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 09:30:03,345 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 280 flow. Second operand 25 states and 18852 transitions. [2023-08-30 09:30:03,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 66 transitions, 544 flow [2023-08-30 09:30:03,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 66 transitions, 468 flow, removed 36 selfloop flow, removed 2 redundant places. [2023-08-30 09:30:03,353 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 418 flow [2023-08-30 09:30:03,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1781, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=418, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2023-08-30 09:30:03,355 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 15 predicate places. [2023-08-30 09:30:03,355 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 418 flow [2023-08-30 09:30:03,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 751.1142857142858) internal successors, (26289), 35 states have internal predecessors, (26289), 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 09:30:03,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:30:03,361 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1] [2023-08-30 09:30:03,379 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 09:30:03,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:30:03,575 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_pc8736x_gpio_setErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 09:30:03,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:30:03,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1831608771, now seen corresponding path program 4 times [2023-08-30 09:30:03,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:30:03,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924088750] [2023-08-30 09:30:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:30:03,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:30:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:30:05,425 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 09:30:05,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:30:05,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924088750] [2023-08-30 09:30:05,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924088750] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:30:05,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367077997] [2023-08-30 09:30:05,426 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 09:30:05,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:30:05,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:30:05,429 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 09:30:05,434 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 09:30:08,324 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 09:30:08,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:30:08,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 1424 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-30 09:30:08,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:30:09,089 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 09:30:09,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:30:10,383 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 09:30:10,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367077997] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:30:10,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:30:10,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 70 [2023-08-30 09:30:10,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493788386] [2023-08-30 09:30:10,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:30:10,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-08-30 09:30:10,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:30:10,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-08-30 09:30:10,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1264, Invalid=3706, Unknown=0, NotChecked=0, Total=4970 [2023-08-30 09:30:15,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 752 out of 1781 [2023-08-30 09:30:15,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 418 flow. Second operand has 71 states, 71 states have (on average 753.056338028169) internal successors, (53467), 71 states have internal predecessors, (53467), 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 09:30:15,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:30:15,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 752 of 1781 [2023-08-30 09:30:15,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15