/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe036.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 14:42:43,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 14:42:43,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 14:42:43,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 14:42:43,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 14:42:43,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 14:42:43,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 14:42:43,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 14:42:43,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 14:42:43,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 14:42:43,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 14:42:43,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 14:42:43,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 14:42:43,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 14:42:43,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 14:42:43,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 14:42:43,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 14:42:43,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 14:42:43,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 14:42:43,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 14:42:43,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 14:42:43,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 14:42:43,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 14:42:43,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 14:42:43,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 14:42:43,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 14:42:43,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 14:42:43,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 14:42:43,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 14:42:43,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 14:42:43,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 14:42:43,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 14:42:43,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 14:42:43,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 14:42:43,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 14:42:43,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 14:42:43,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 14:42:43,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 14:42:43,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 14:42:43,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 14:42:43,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 14:42:43,134 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 14:42:43,160 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 14:42:43,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 14:42:43,162 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 14:42:43,162 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 14:42:43,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 14:42:43,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 14:42:43,163 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 14:42:43,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 14:42:43,163 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 14:42:43,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 14:42:43,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 14:42:43,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 14:42:43,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 14:42:43,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 14:42:43,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 14:42:43,165 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 14:42:43,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 14:42:43,165 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 14:42:43,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 14:42:43,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 14:42:43,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 14:42:43,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 14:42:43,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 14:42:43,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 14:42:43,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 14:42:43,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 14:42:43,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 14:42:43,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 14:42:43,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 14:42:43,166 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 14:42:43,166 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 14:42:43,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 14:42:43,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 14:42:43,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 14:42:43,472 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 14:42:43,473 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 14:42:43,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036.i [2022-12-12 14:42:44,534 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 14:42:44,802 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 14:42:44,809 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036.i [2022-12-12 14:42:44,841 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71bff9d16/313c51768e1b4f98b7c6b3adac30fdab/FLAGdcf642385 [2022-12-12 14:42:44,851 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71bff9d16/313c51768e1b4f98b7c6b3adac30fdab [2022-12-12 14:42:44,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 14:42:44,854 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 14:42:44,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 14:42:44,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 14:42:44,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 14:42:44,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 02:42:44" (1/1) ... [2022-12-12 14:42:44,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a26c6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:44, skipping insertion in model container [2022-12-12 14:42:44,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 02:42:44" (1/1) ... [2022-12-12 14:42:44,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 14:42:44,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 14:42:45,041 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036.i[941,954] [2022-12-12 14:42:45,168 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,168 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,169 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,169 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,169 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,170 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,170 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,170 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,170 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,178 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,179 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,179 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,179 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,180 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,181 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 14:42:45,188 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 14:42:45,197 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036.i[941,954] [2022-12-12 14:42:45,213 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,215 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,215 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,215 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,215 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,216 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,216 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,216 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,216 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,216 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,216 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,216 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,216 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,217 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,218 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,219 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,220 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,220 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,221 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:45,221 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:45,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 14:42:45,258 INFO L208 MainTranslator]: Completed translation [2022-12-12 14:42:45,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:45 WrapperNode [2022-12-12 14:42:45,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 14:42:45,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 14:42:45,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 14:42:45,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 14:42:45,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:45" (1/1) ... [2022-12-12 14:42:45,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:45" (1/1) ... [2022-12-12 14:42:45,296 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2022-12-12 14:42:45,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 14:42:45,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 14:42:45,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 14:42:45,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 14:42:45,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:45" (1/1) ... [2022-12-12 14:42:45,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:45" (1/1) ... [2022-12-12 14:42:45,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:45" (1/1) ... [2022-12-12 14:42:45,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:45" (1/1) ... [2022-12-12 14:42:45,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:45" (1/1) ... [2022-12-12 14:42:45,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:45" (1/1) ... [2022-12-12 14:42:45,324 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:45" (1/1) ... [2022-12-12 14:42:45,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:45" (1/1) ... [2022-12-12 14:42:45,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 14:42:45,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 14:42:45,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 14:42:45,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 14:42:45,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:45" (1/1) ... [2022-12-12 14:42:45,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 14:42:45,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:42:45,372 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) [2022-12-12 14:42:45,376 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 [2022-12-12 14:42:45,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 14:42:45,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 14:42:45,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 14:42:45,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 14:42:45,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 14:42:45,405 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 14:42:45,405 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 14:42:45,405 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 14:42:45,405 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 14:42:45,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 14:42:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 14:42:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 14:42:45,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 14:42:45,408 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 14:42:45,510 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 14:42:45,511 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 14:42:45,644 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 14:42:45,649 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 14:42:45,649 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 14:42:45,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 02:42:45 BoogieIcfgContainer [2022-12-12 14:42:45,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 14:42:45,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 14:42:45,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 14:42:45,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 14:42:45,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 02:42:44" (1/3) ... [2022-12-12 14:42:45,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5a0a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 02:42:45, skipping insertion in model container [2022-12-12 14:42:45,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:45" (2/3) ... [2022-12-12 14:42:45,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5a0a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 02:42:45, skipping insertion in model container [2022-12-12 14:42:45,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 02:42:45" (3/3) ... [2022-12-12 14:42:45,657 INFO L112 eAbstractionObserver]: Analyzing ICFG safe036.i [2022-12-12 14:42:45,670 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 14:42:45,670 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 14:42:45,670 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 14:42:45,703 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 14:42:45,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 146 flow [2022-12-12 14:42:45,749 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-12-12 14:42:45,749 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:42:45,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-12-12 14:42:45,753 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 68 transitions, 146 flow [2022-12-12 14:42:45,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 56 transitions, 118 flow [2022-12-12 14:42:45,763 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 14:42:45,780 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 56 transitions, 118 flow [2022-12-12 14:42:45,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 56 transitions, 118 flow [2022-12-12 14:42:45,814 INFO L130 PetriNetUnfolder]: 1/56 cut-off events. [2022-12-12 14:42:45,814 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:42:45,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2022-12-12 14:42:45,817 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 56 transitions, 118 flow [2022-12-12 14:42:45,817 INFO L226 LiptonReduction]: Number of co-enabled transitions 540 [2022-12-12 14:42:47,280 INFO L241 LiptonReduction]: Total number of compositions: 44 [2022-12-12 14:42:47,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 14:42:47,295 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=false, 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;@6941fad4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 14:42:47,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 14:42:47,298 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2022-12-12 14:42:47,298 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:42:47,298 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:42:47,299 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-12 14:42:47,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:42:47,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:42:47,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1653656279, now seen corresponding path program 1 times [2022-12-12 14:42:47,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:42:47,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571255959] [2022-12-12 14:42:47,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:42:47,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:42:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:42:47,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:42:47,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:42:47,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571255959] [2022-12-12 14:42:47,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571255959] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:42:47,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:42:47,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:42:47,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246873627] [2022-12-12 14:42:47,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:42:47,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:42:47,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:42:47,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:42:47,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:42:47,624 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2022-12-12 14:42:47,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 19 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-12-12 14:42:47,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:42:47,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2022-12-12 14:42:47,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:42:47,724 INFO L130 PetriNetUnfolder]: 91/201 cut-off events. [2022-12-12 14:42:47,724 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 14:42:47,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 201 events. 91/201 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 906 event pairs, 21 based on Foata normal form. 25/157 useless extension candidates. Maximal degree in co-relation 401. Up to 139 conditions per place. [2022-12-12 14:42:47,727 INFO L137 encePairwiseOnDemand]: 9/19 looper letters, 17 selfloop transitions, 7 changer transitions 17/45 dead transitions. [2022-12-12 14:42:47,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 45 transitions, 181 flow [2022-12-12 14:42:47,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 14:42:47,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 14:42:47,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2022-12-12 14:42:47,737 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2022-12-12 14:42:47,738 INFO L175 Difference]: Start difference. First operand has 25 places, 19 transitions, 44 flow. Second operand 5 states and 65 transitions. [2022-12-12 14:42:47,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 45 transitions, 181 flow [2022-12-12 14:42:47,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 45 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 14:42:47,743 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 103 flow [2022-12-12 14:42:47,745 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2022-12-12 14:42:47,747 INFO L295 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2022-12-12 14:42:47,747 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 103 flow [2022-12-12 14:42:47,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-12-12 14:42:47,747 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:42:47,747 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:42:47,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 14:42:47,748 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:42:47,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:42:47,755 INFO L85 PathProgramCache]: Analyzing trace with hash 170879388, now seen corresponding path program 1 times [2022-12-12 14:42:47,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:42:47,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267525584] [2022-12-12 14:42:47,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:42:47,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:42:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:42:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:42:47,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:42:47,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267525584] [2022-12-12 14:42:47,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267525584] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:42:47,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:42:47,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 14:42:47,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568719564] [2022-12-12 14:42:47,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:42:47,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 14:42:47,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:42:47,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 14:42:47,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 14:42:47,891 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2022-12-12 14:42:47,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 103 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2022-12-12 14:42:47,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:42:47,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2022-12-12 14:42:47,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:42:47,966 INFO L130 PetriNetUnfolder]: 39/121 cut-off events. [2022-12-12 14:42:47,966 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-12 14:42:47,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 121 events. 39/121 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 512 event pairs, 3 based on Foata normal form. 21/105 useless extension candidates. Maximal degree in co-relation 388. Up to 76 conditions per place. [2022-12-12 14:42:47,967 INFO L137 encePairwiseOnDemand]: 10/19 looper letters, 11 selfloop transitions, 13 changer transitions 10/37 dead transitions. [2022-12-12 14:42:47,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 223 flow [2022-12-12 14:42:47,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 14:42:47,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 14:42:47,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 59 transitions. [2022-12-12 14:42:47,968 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2022-12-12 14:42:47,968 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 103 flow. Second operand 6 states and 59 transitions. [2022-12-12 14:42:47,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 223 flow [2022-12-12 14:42:47,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 190 flow, removed 13 selfloop flow, removed 2 redundant places. [2022-12-12 14:42:47,970 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 124 flow [2022-12-12 14:42:47,970 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2022-12-12 14:42:47,971 INFO L295 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2022-12-12 14:42:47,971 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 124 flow [2022-12-12 14:42:47,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2022-12-12 14:42:47,971 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:42:47,971 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:42:47,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 14:42:47,972 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:42:47,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:42:47,972 INFO L85 PathProgramCache]: Analyzing trace with hash 279061624, now seen corresponding path program 1 times [2022-12-12 14:42:47,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:42:47,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102972447] [2022-12-12 14:42:47,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:42:47,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:42:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:42:48,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:42:48,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:42:48,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102972447] [2022-12-12 14:42:48,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102972447] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:42:48,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:42:48,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 14:42:48,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477968105] [2022-12-12 14:42:48,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:42:48,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:42:48,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:42:48,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:42:48,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:42:48,079 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2022-12-12 14:42:48,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-12 14:42:48,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:42:48,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2022-12-12 14:42:48,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:42:48,120 INFO L130 PetriNetUnfolder]: 33/124 cut-off events. [2022-12-12 14:42:48,120 INFO L131 PetriNetUnfolder]: For 140/141 co-relation queries the response was YES. [2022-12-12 14:42:48,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 124 events. 33/124 cut-off events. For 140/141 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 593 event pairs, 8 based on Foata normal form. 10/113 useless extension candidates. Maximal degree in co-relation 449. Up to 80 conditions per place. [2022-12-12 14:42:48,121 INFO L137 encePairwiseOnDemand]: 16/19 looper letters, 18 selfloop transitions, 1 changer transitions 11/36 dead transitions. [2022-12-12 14:42:48,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 264 flow [2022-12-12 14:42:48,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 14:42:48,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 14:42:48,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 43 transitions. [2022-12-12 14:42:48,122 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2022-12-12 14:42:48,122 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 124 flow. Second operand 4 states and 43 transitions. [2022-12-12 14:42:48,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 264 flow [2022-12-12 14:42:48,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 36 transitions, 214 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-12-12 14:42:48,124 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 99 flow [2022-12-12 14:42:48,124 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2022-12-12 14:42:48,125 INFO L295 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2022-12-12 14:42:48,125 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 99 flow [2022-12-12 14:42:48,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-12 14:42:48,125 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:42:48,125 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:42:48,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 14:42:48,126 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:42:48,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:42:48,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1602848760, now seen corresponding path program 2 times [2022-12-12 14:42:48,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:42:48,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995609048] [2022-12-12 14:42:48,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:42:48,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:42:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:42:48,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:42:48,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:42:48,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995609048] [2022-12-12 14:42:48,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995609048] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:42:48,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:42:48,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 14:42:48,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615949380] [2022-12-12 14:42:48,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:42:48,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:42:48,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:42:48,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:42:48,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:42:48,230 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 19 [2022-12-12 14:42:48,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-12 14:42:48,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:42:48,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 19 [2022-12-12 14:42:48,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:42:48,261 INFO L130 PetriNetUnfolder]: 22/82 cut-off events. [2022-12-12 14:42:48,261 INFO L131 PetriNetUnfolder]: For 56/60 co-relation queries the response was YES. [2022-12-12 14:42:48,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 82 events. 22/82 cut-off events. For 56/60 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 306 event pairs, 2 based on Foata normal form. 13/80 useless extension candidates. Maximal degree in co-relation 251. Up to 34 conditions per place. [2022-12-12 14:42:48,262 INFO L137 encePairwiseOnDemand]: 16/19 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2022-12-12 14:42:48,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 32 transitions, 196 flow [2022-12-12 14:42:48,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 14:42:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 14:42:48,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 43 transitions. [2022-12-12 14:42:48,263 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2022-12-12 14:42:48,263 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 99 flow. Second operand 4 states and 43 transitions. [2022-12-12 14:42:48,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 32 transitions, 196 flow [2022-12-12 14:42:48,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 14:42:48,264 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2022-12-12 14:42:48,264 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2022-12-12 14:42:48,264 INFO L295 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2022-12-12 14:42:48,264 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2022-12-12 14:42:48,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-12-12 14:42:48,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 14:42:48,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 14:42:48,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 14:42:48,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 14:42:48,267 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-12-12 14:42:48,269 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 14:42:48,269 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 14:42:48,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 02:42:48 BasicIcfg [2022-12-12 14:42:48,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 14:42:48,272 INFO L158 Benchmark]: Toolchain (without parser) took 3417.91ms. Allocated memory was 209.7MB in the beginning and 303.0MB in the end (delta: 93.3MB). Free memory was 185.6MB in the beginning and 253.9MB in the end (delta: -68.3MB). Peak memory consumption was 26.4MB. Max. memory is 8.0GB. [2022-12-12 14:42:48,272 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 209.7MB. Free memory is still 186.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 14:42:48,272 INFO L158 Benchmark]: CACSL2BoogieTranslator took 404.68ms. Allocated memory is still 209.7MB. Free memory was 185.6MB in the beginning and 162.8MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-12 14:42:48,272 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.00ms. Allocated memory is still 209.7MB. Free memory was 162.8MB in the beginning and 160.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 14:42:48,273 INFO L158 Benchmark]: Boogie Preprocessor took 36.04ms. Allocated memory is still 209.7MB. Free memory was 160.8MB in the beginning and 159.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 14:42:48,273 INFO L158 Benchmark]: RCFGBuilder took 317.48ms. Allocated memory is still 209.7MB. Free memory was 159.7MB in the beginning and 146.1MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 14:42:48,273 INFO L158 Benchmark]: TraceAbstraction took 2618.58ms. Allocated memory was 209.7MB in the beginning and 303.0MB in the end (delta: 93.3MB). Free memory was 145.0MB in the beginning and 253.9MB in the end (delta: -108.9MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 14:42:48,274 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 209.7MB. Free memory is still 186.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 404.68ms. Allocated memory is still 209.7MB. Free memory was 185.6MB in the beginning and 162.8MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.00ms. Allocated memory is still 209.7MB. Free memory was 162.8MB in the beginning and 160.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.04ms. Allocated memory is still 209.7MB. Free memory was 160.8MB in the beginning and 159.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 317.48ms. Allocated memory is still 209.7MB. Free memory was 159.7MB in the beginning and 146.1MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 2618.58ms. Allocated memory was 209.7MB in the beginning and 303.0MB in the end (delta: 93.3MB). Free memory was 145.0MB in the beginning and 253.9MB in the end (delta: -108.9MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 62 PlacesBefore, 25 PlacesAfterwards, 56 TransitionsBefore, 19 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 24 ConcurrentYvCompositions, 0 ChoiceCompositions, 44 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 502, independent: 461, independent conditional: 461, independent unconditional: 0, dependent: 41, dependent conditional: 41, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 502, independent: 461, independent conditional: 0, independent unconditional: 461, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 502, independent: 461, independent conditional: 0, independent unconditional: 461, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 502, independent: 461, independent conditional: 0, independent unconditional: 461, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 409, independent: 381, independent conditional: 0, independent unconditional: 381, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 409, independent: 368, independent conditional: 0, independent unconditional: 368, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 41, independent: 13, independent conditional: 0, independent unconditional: 13, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 84, independent: 21, independent conditional: 0, independent unconditional: 21, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 502, independent: 80, independent conditional: 0, independent unconditional: 80, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 409, unknown conditional: 0, unknown unconditional: 409] , Statistics on independence cache: Total cache size (in pairs): 567, Positive cache size: 539, Positive conditional cache size: 0, Positive unconditional cache size: 539, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 83 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 216 IncrementalHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 2 mSDtfsCounter, 216 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=2, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 97 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 14:42:48,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...