/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/safe026_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 14:41:59,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 14:41:59,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 14:41:59,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 14:41:59,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 14:41:59,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 14:41:59,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 14:41:59,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 14:41:59,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 14:41:59,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 14:41:59,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 14:41:59,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 14:41:59,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 14:41:59,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 14:41:59,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 14:41:59,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 14:41:59,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 14:41:59,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 14:41:59,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 14:41:59,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 14:41:59,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 14:41:59,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 14:41:59,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 14:41:59,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 14:41:59,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 14:41:59,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 14:41:59,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 14:41:59,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 14:41:59,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 14:41:59,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 14:41:59,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 14:41:59,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 14:41:59,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 14:41:59,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 14:41:59,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 14:41:59,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 14:41:59,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 14:41:59,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 14:41:59,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 14:41:59,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 14:41:59,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 14:41:59,335 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 14:41:59,372 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 14:41:59,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 14:41:59,374 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 14:41:59,374 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 14:41:59,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 14:41:59,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 14:41:59,374 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 14:41:59,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 14:41:59,375 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 14:41:59,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 14:41:59,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 14:41:59,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 14:41:59,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 14:41:59,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 14:41:59,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 14:41:59,375 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 14:41:59,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 14:41:59,376 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 14:41:59,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 14:41:59,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 14:41:59,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 14:41:59,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 14:41:59,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 14:41:59,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 14:41:59,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 14:41:59,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 14:41:59,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 14:41:59,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 14:41:59,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 14:41:59,377 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 14:41:59,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 14:41:59,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 14:41:59,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 14:41:59,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 14:41:59,663 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 14:41:59,665 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 14:41:59,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.i [2022-12-12 14:42:00,651 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 14:42:00,867 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 14:42:00,867 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i [2022-12-12 14:42:00,882 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bd753ff4/a79782e0e529400f9adbea2aa8f3abc1/FLAG8d6613952 [2022-12-12 14:42:00,894 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bd753ff4/a79782e0e529400f9adbea2aa8f3abc1 [2022-12-12 14:42:00,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 14:42:00,897 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 14:42:00,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 14:42:00,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 14:42:00,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 14:42:00,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 02:42:00" (1/1) ... [2022-12-12 14:42:00,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6244655c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:00, skipping insertion in model container [2022-12-12 14:42:00,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 02:42:00" (1/1) ... [2022-12-12 14:42:00,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 14:42:00,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 14:42:01,049 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/safe026_tso.i[945,958] [2022-12-12 14:42:01,189 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,190 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,193 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,193 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,193 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,193 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,193 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,194 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,194 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,194 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,194 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,194 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,194 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,195 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,195 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,204 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,204 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,205 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,206 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,206 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,207 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 14:42:01,217 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 14:42:01,227 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/safe026_tso.i[945,958] [2022-12-12 14:42:01,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,253 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,253 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,254 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,254 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,254 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,254 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,256 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,256 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,258 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,263 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,263 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,263 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:42:01,265 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:42:01,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 14:42:01,300 INFO L208 MainTranslator]: Completed translation [2022-12-12 14:42:01,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:01 WrapperNode [2022-12-12 14:42:01,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 14:42:01,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 14:42:01,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 14:42:01,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 14:42:01,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:01" (1/1) ... [2022-12-12 14:42:01,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:01" (1/1) ... [2022-12-12 14:42:01,354 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-12-12 14:42:01,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 14:42:01,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 14:42:01,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 14:42:01,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 14:42:01,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:01" (1/1) ... [2022-12-12 14:42:01,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:01" (1/1) ... [2022-12-12 14:42:01,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:01" (1/1) ... [2022-12-12 14:42:01,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:01" (1/1) ... [2022-12-12 14:42:01,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:01" (1/1) ... [2022-12-12 14:42:01,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:01" (1/1) ... [2022-12-12 14:42:01,382 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:01" (1/1) ... [2022-12-12 14:42:01,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:01" (1/1) ... [2022-12-12 14:42:01,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 14:42:01,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 14:42:01,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 14:42:01,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 14:42:01,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:01" (1/1) ... [2022-12-12 14:42:01,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 14:42:01,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:42:01,457 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 14:42:01,471 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 14:42:01,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 14:42:01,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 14:42:01,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 14:42:01,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 14:42:01,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 14:42:01,486 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 14:42:01,486 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 14:42:01,487 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 14:42:01,487 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 14:42:01,487 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 14:42:01,487 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 14:42:01,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 14:42:01,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 14:42:01,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 14:42:01,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 14:42:01,488 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 14:42:01,635 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 14:42:01,636 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 14:42:01,789 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 14:42:01,804 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 14:42:01,804 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 14:42:01,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 02:42:01 BoogieIcfgContainer [2022-12-12 14:42:01,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 14:42:01,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 14:42:01,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 14:42:01,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 14:42:01,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 02:42:00" (1/3) ... [2022-12-12 14:42:01,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2958f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 02:42:01, skipping insertion in model container [2022-12-12 14:42:01,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:42:01" (2/3) ... [2022-12-12 14:42:01,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2958f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 02:42:01, skipping insertion in model container [2022-12-12 14:42:01,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 02:42:01" (3/3) ... [2022-12-12 14:42:01,811 INFO L112 eAbstractionObserver]: Analyzing ICFG safe026_tso.i [2022-12-12 14:42:01,822 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 14:42:01,822 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 14:42:01,822 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 14:42:01,890 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 14:42:01,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2022-12-12 14:42:01,968 INFO L130 PetriNetUnfolder]: 2/80 cut-off events. [2022-12-12 14:42:01,969 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:42:01,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-12-12 14:42:01,972 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2022-12-12 14:42:01,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2022-12-12 14:42:01,976 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 14:42:01,997 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 68 transitions, 145 flow [2022-12-12 14:42:02,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 68 transitions, 145 flow [2022-12-12 14:42:02,029 INFO L130 PetriNetUnfolder]: 1/68 cut-off events. [2022-12-12 14:42:02,029 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:42:02,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 1/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 35 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2022-12-12 14:42:02,032 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 68 transitions, 145 flow [2022-12-12 14:42:02,032 INFO L226 LiptonReduction]: Number of co-enabled transitions 974 [2022-12-12 14:42:03,802 INFO L241 LiptonReduction]: Total number of compositions: 52 [2022-12-12 14:42:03,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 14:42:03,817 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;@71aaf3fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 14:42:03,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 14:42:03,820 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-12-12 14:42:03,820 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:42:03,820 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:42:03,820 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:42:03,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 14:42:03,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:42:03,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2077100784, now seen corresponding path program 1 times [2022-12-12 14:42:03,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:42:03,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696884412] [2022-12-12 14:42:03,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:42:03,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:42:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:42:04,118 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 14:42:04,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:42:04,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696884412] [2022-12-12 14:42:04,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696884412] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:42:04,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:42:04,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 14:42:04,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424058138] [2022-12-12 14:42:04,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:42:04,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 14:42:04,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:42:04,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 14:42:04,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 14:42:04,140 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2022-12-12 14:42:04,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 14:42:04,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:42:04,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2022-12-12 14:42:04,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:42:04,263 INFO L130 PetriNetUnfolder]: 947/1604 cut-off events. [2022-12-12 14:42:04,264 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-12-12 14:42:04,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3161 conditions, 1604 events. 947/1604 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8576 event pairs, 300 based on Foata normal form. 62/1302 useless extension candidates. Maximal degree in co-relation 3150. Up to 994 conditions per place. [2022-12-12 14:42:04,272 INFO L137 encePairwiseOnDemand]: 19/26 looper letters, 28 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2022-12-12 14:42:04,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 156 flow [2022-12-12 14:42:04,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 14:42:04,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 14:42:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2022-12-12 14:42:04,279 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2022-12-12 14:42:04,280 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 3 states and 54 transitions. [2022-12-12 14:42:04,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 156 flow [2022-12-12 14:42:04,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-12 14:42:04,284 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 94 flow [2022-12-12 14:42:04,285 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2022-12-12 14:42:04,287 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2022-12-12 14:42:04,287 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 94 flow [2022-12-12 14:42:04,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 14:42:04,287 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:42:04,287 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:42:04,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 14:42:04,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 14:42:04,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:42:04,288 INFO L85 PathProgramCache]: Analyzing trace with hash -34385664, now seen corresponding path program 1 times [2022-12-12 14:42:04,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:42:04,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218136690] [2022-12-12 14:42:04,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:42:04,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:42:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:42:04,375 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 14:42:04,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:42:04,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218136690] [2022-12-12 14:42:04,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218136690] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:42:04,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:42:04,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:42:04,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122605125] [2022-12-12 14:42:04,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:42:04,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:42:04,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:42:04,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:42:04,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:42:04,378 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2022-12-12 14:42:04,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 14:42:04,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:42:04,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2022-12-12 14:42:04,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:42:04,497 INFO L130 PetriNetUnfolder]: 898/1532 cut-off events. [2022-12-12 14:42:04,497 INFO L131 PetriNetUnfolder]: For 487/487 co-relation queries the response was YES. [2022-12-12 14:42:04,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3613 conditions, 1532 events. 898/1532 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7918 event pairs, 212 based on Foata normal form. 15/1197 useless extension candidates. Maximal degree in co-relation 3601. Up to 795 conditions per place. [2022-12-12 14:42:04,503 INFO L137 encePairwiseOnDemand]: 20/26 looper letters, 32 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2022-12-12 14:42:04,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 44 transitions, 208 flow [2022-12-12 14:42:04,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 14:42:04,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 14:42:04,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2022-12-12 14:42:04,504 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2022-12-12 14:42:04,504 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 94 flow. Second operand 4 states and 61 transitions. [2022-12-12 14:42:04,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 44 transitions, 208 flow [2022-12-12 14:42:04,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 44 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 14:42:04,507 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 122 flow [2022-12-12 14:42:04,507 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2022-12-12 14:42:04,507 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2022-12-12 14:42:04,507 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 122 flow [2022-12-12 14:42:04,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 14:42:04,508 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:42:04,508 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:42:04,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 14:42:04,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 14:42:04,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:42:04,508 INFO L85 PathProgramCache]: Analyzing trace with hash -34385044, now seen corresponding path program 1 times [2022-12-12 14:42:04,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:42:04,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775616465] [2022-12-12 14:42:04,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:42:04,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:42:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:42:04,584 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 14:42:04,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:42:04,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775616465] [2022-12-12 14:42:04,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775616465] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:42:04,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:42:04,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:42:04,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464463516] [2022-12-12 14:42:04,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:42:04,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:42:04,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:42:04,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:42:04,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:42:04,586 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2022-12-12 14:42:04,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 14:42:04,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:42:04,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2022-12-12 14:42:04,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:42:04,754 INFO L130 PetriNetUnfolder]: 1104/1972 cut-off events. [2022-12-12 14:42:04,754 INFO L131 PetriNetUnfolder]: For 1234/1236 co-relation queries the response was YES. [2022-12-12 14:42:04,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4624 conditions, 1972 events. 1104/1972 cut-off events. For 1234/1236 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 12233 event pairs, 281 based on Foata normal form. 75/1519 useless extension candidates. Maximal degree in co-relation 4609. Up to 870 conditions per place. [2022-12-12 14:42:04,762 INFO L137 encePairwiseOnDemand]: 21/26 looper letters, 30 selfloop transitions, 5 changer transitions 10/53 dead transitions. [2022-12-12 14:42:04,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 286 flow [2022-12-12 14:42:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 14:42:04,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 14:42:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2022-12-12 14:42:04,764 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6634615384615384 [2022-12-12 14:42:04,764 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 122 flow. Second operand 4 states and 69 transitions. [2022-12-12 14:42:04,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 286 flow [2022-12-12 14:42:04,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 53 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 14:42:04,768 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 144 flow [2022-12-12 14:42:04,768 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2022-12-12 14:42:04,769 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2022-12-12 14:42:04,769 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 144 flow [2022-12-12 14:42:04,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 14:42:04,769 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:42:04,769 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:42:04,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 14:42:04,769 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 14:42:04,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:42:04,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1065955492, now seen corresponding path program 1 times [2022-12-12 14:42:04,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:42:04,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345156527] [2022-12-12 14:42:04,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:42:04,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:42:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:42:04,844 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 14:42:04,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:42:04,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345156527] [2022-12-12 14:42:04,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345156527] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:42:04,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:42:04,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:42:04,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321510030] [2022-12-12 14:42:04,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:42:04,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 14:42:04,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:42:04,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 14:42:04,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 14:42:04,846 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2022-12-12 14:42:04,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 14:42:04,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:42:04,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2022-12-12 14:42:04,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:42:04,957 INFO L130 PetriNetUnfolder]: 1260/2005 cut-off events. [2022-12-12 14:42:04,957 INFO L131 PetriNetUnfolder]: For 2012/2051 co-relation queries the response was YES. [2022-12-12 14:42:04,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5324 conditions, 2005 events. 1260/2005 cut-off events. For 2012/2051 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 11270 event pairs, 446 based on Foata normal form. 9/1115 useless extension candidates. Maximal degree in co-relation 5306. Up to 1912 conditions per place. [2022-12-12 14:42:04,965 INFO L137 encePairwiseOnDemand]: 15/26 looper letters, 31 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2022-12-12 14:42:04,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 292 flow [2022-12-12 14:42:04,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 14:42:04,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 14:42:04,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2022-12-12 14:42:04,966 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-12-12 14:42:04,966 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 144 flow. Second operand 3 states and 52 transitions. [2022-12-12 14:42:04,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 292 flow [2022-12-12 14:42:04,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 49 transitions, 261 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-12-12 14:42:04,969 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 189 flow [2022-12-12 14:42:04,969 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2022-12-12 14:42:04,969 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2022-12-12 14:42:04,969 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 189 flow [2022-12-12 14:42:04,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 14:42:04,970 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:42:04,970 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:42:04,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 14:42:04,970 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 14:42:04,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:42:04,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1248398225, now seen corresponding path program 1 times [2022-12-12 14:42:04,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:42:04,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263403597] [2022-12-12 14:42:04,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:42:04,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:42:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:42:05,078 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 14:42:05,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:42:05,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263403597] [2022-12-12 14:42:05,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263403597] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:42:05,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:42:05,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 14:42:05,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056218025] [2022-12-12 14:42:05,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:42:05,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:42:05,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:42:05,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:42:05,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:42:05,080 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2022-12-12 14:42:05,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 14:42:05,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:42:05,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2022-12-12 14:42:05,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:42:05,182 INFO L130 PetriNetUnfolder]: 804/1427 cut-off events. [2022-12-12 14:42:05,182 INFO L131 PetriNetUnfolder]: For 702/841 co-relation queries the response was YES. [2022-12-12 14:42:05,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4564 conditions, 1427 events. 804/1427 cut-off events. For 702/841 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 8398 event pairs, 104 based on Foata normal form. 71/888 useless extension candidates. Maximal degree in co-relation 4546. Up to 1162 conditions per place. [2022-12-12 14:42:05,188 INFO L137 encePairwiseOnDemand]: 15/26 looper letters, 37 selfloop transitions, 19 changer transitions 0/64 dead transitions. [2022-12-12 14:42:05,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 405 flow [2022-12-12 14:42:05,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 14:42:05,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 14:42:05,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2022-12-12 14:42:05,190 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6826923076923077 [2022-12-12 14:42:05,190 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 189 flow. Second operand 4 states and 71 transitions. [2022-12-12 14:42:05,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 405 flow [2022-12-12 14:42:05,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 14:42:05,192 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 291 flow [2022-12-12 14:42:05,192 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2022-12-12 14:42:05,193 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2022-12-12 14:42:05,193 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 291 flow [2022-12-12 14:42:05,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 14:42:05,193 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:42:05,193 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:42:05,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 14:42:05,193 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 14:42:05,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:42:05,194 INFO L85 PathProgramCache]: Analyzing trace with hash -723547072, now seen corresponding path program 1 times [2022-12-12 14:42:05,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:42:05,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40665918] [2022-12-12 14:42:05,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:42:05,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:42:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:42:05,257 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 14:42:05,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:42:05,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40665918] [2022-12-12 14:42:05,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40665918] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:42:05,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:42:05,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 14:42:05,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049177596] [2022-12-12 14:42:05,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:42:05,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 14:42:05,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:42:05,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 14:42:05,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-12 14:42:05,258 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2022-12-12 14:42:05,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 291 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 14:42:05,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:42:05,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2022-12-12 14:42:05,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:42:05,353 INFO L130 PetriNetUnfolder]: 462/878 cut-off events. [2022-12-12 14:42:05,353 INFO L131 PetriNetUnfolder]: For 644/984 co-relation queries the response was YES. [2022-12-12 14:42:05,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3648 conditions, 878 events. 462/878 cut-off events. For 644/984 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5012 event pairs, 14 based on Foata normal form. 141/616 useless extension candidates. Maximal degree in co-relation 3628. Up to 625 conditions per place. [2022-12-12 14:42:05,357 INFO L137 encePairwiseOnDemand]: 15/26 looper letters, 27 selfloop transitions, 28 changer transitions 1/64 dead transitions. [2022-12-12 14:42:05,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 64 transitions, 471 flow [2022-12-12 14:42:05,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 14:42:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 14:42:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2022-12-12 14:42:05,358 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2022-12-12 14:42:05,358 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 291 flow. Second operand 5 states and 76 transitions. [2022-12-12 14:42:05,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 64 transitions, 471 flow [2022-12-12 14:42:05,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 64 transitions, 424 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-12-12 14:42:05,360 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 324 flow [2022-12-12 14:42:05,360 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2022-12-12 14:42:05,361 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 14 predicate places. [2022-12-12 14:42:05,361 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 324 flow [2022-12-12 14:42:05,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 14:42:05,361 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:42:05,361 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:42:05,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 14:42:05,361 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 14:42:05,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:42:05,362 INFO L85 PathProgramCache]: Analyzing trace with hash 863092583, now seen corresponding path program 1 times [2022-12-12 14:42:05,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:42:05,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259434149] [2022-12-12 14:42:05,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:42:05,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:42:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:42:05,435 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 14:42:05,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:42:05,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259434149] [2022-12-12 14:42:05,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259434149] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:42:05,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:42:05,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 14:42:05,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536062930] [2022-12-12 14:42:05,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:42:05,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:42:05,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:42:05,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:42:05,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:42:05,437 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2022-12-12 14:42:05,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 14:42:05,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:42:05,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2022-12-12 14:42:05,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:42:05,549 INFO L130 PetriNetUnfolder]: 544/1078 cut-off events. [2022-12-12 14:42:05,550 INFO L131 PetriNetUnfolder]: For 1665/1761 co-relation queries the response was YES. [2022-12-12 14:42:05,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4667 conditions, 1078 events. 544/1078 cut-off events. For 1665/1761 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6470 event pairs, 26 based on Foata normal form. 74/886 useless extension candidates. Maximal degree in co-relation 4647. Up to 691 conditions per place. [2022-12-12 14:42:05,553 INFO L137 encePairwiseOnDemand]: 19/26 looper letters, 38 selfloop transitions, 5 changer transitions 37/90 dead transitions. [2022-12-12 14:42:05,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 90 transitions, 747 flow [2022-12-12 14:42:05,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 14:42:05,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 14:42:05,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2022-12-12 14:42:05,554 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5923076923076923 [2022-12-12 14:42:05,554 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 324 flow. Second operand 5 states and 77 transitions. [2022-12-12 14:42:05,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 90 transitions, 747 flow [2022-12-12 14:42:05,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 90 transitions, 613 flow, removed 30 selfloop flow, removed 3 redundant places. [2022-12-12 14:42:05,564 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 222 flow [2022-12-12 14:42:05,564 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=222, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2022-12-12 14:42:05,564 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 16 predicate places. [2022-12-12 14:42:05,564 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 222 flow [2022-12-12 14:42:05,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 14:42:05,565 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:42:05,565 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:42:05,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 14:42:05,565 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 14:42:05,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:42:05,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1354596343, now seen corresponding path program 2 times [2022-12-12 14:42:05,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:42:05,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614939559] [2022-12-12 14:42:05,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:42:05,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:42:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:42:05,647 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 14:42:05,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:42:05,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614939559] [2022-12-12 14:42:05,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614939559] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:42:05,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:42:05,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 14:42:05,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127951420] [2022-12-12 14:42:05,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:42:05,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 14:42:05,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:42:05,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 14:42:05,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 14:42:05,649 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2022-12-12 14:42:05,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 14:42:05,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:42:05,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2022-12-12 14:42:05,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:42:05,696 INFO L130 PetriNetUnfolder]: 121/259 cut-off events. [2022-12-12 14:42:05,696 INFO L131 PetriNetUnfolder]: For 309/320 co-relation queries the response was YES. [2022-12-12 14:42:05,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 924 conditions, 259 events. 121/259 cut-off events. For 309/320 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1074 event pairs, 8 based on Foata normal form. 32/225 useless extension candidates. Maximal degree in co-relation 903. Up to 157 conditions per place. [2022-12-12 14:42:05,697 INFO L137 encePairwiseOnDemand]: 21/26 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2022-12-12 14:42:05,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 328 flow [2022-12-12 14:42:05,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 14:42:05,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 14:42:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2022-12-12 14:42:05,712 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2022-12-12 14:42:05,712 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 222 flow. Second operand 6 states and 63 transitions. [2022-12-12 14:42:05,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 328 flow [2022-12-12 14:42:05,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 306 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-12-12 14:42:05,714 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2022-12-12 14:42:05,714 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2022-12-12 14:42:05,714 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2022-12-12 14:42:05,714 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2022-12-12 14:42:05,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 14:42:05,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 14:42:05,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 14:42:05,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 14:42:05,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 14:42:05,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 14:42:05,717 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-12-12 14:42:05,719 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 14:42:05,719 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 14:42:05,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 02:42:05 BasicIcfg [2022-12-12 14:42:05,721 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 14:42:05,721 INFO L158 Benchmark]: Toolchain (without parser) took 4824.20ms. Allocated memory was 187.7MB in the beginning and 313.5MB in the end (delta: 125.8MB). Free memory was 147.2MB in the beginning and 175.1MB in the end (delta: -27.9MB). Peak memory consumption was 98.9MB. Max. memory is 8.0GB. [2022-12-12 14:42:05,722 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 187.7MB. Free memory was 163.9MB in the beginning and 163.8MB in the end (delta: 87.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 14:42:05,722 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.93ms. Allocated memory is still 187.7MB. Free memory was 147.2MB in the beginning and 124.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-12 14:42:05,722 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.45ms. Allocated memory is still 187.7MB. Free memory was 124.1MB in the beginning and 122.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 14:42:05,728 INFO L158 Benchmark]: Boogie Preprocessor took 29.52ms. Allocated memory is still 187.7MB. Free memory was 122.0MB in the beginning and 121.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 14:42:05,728 INFO L158 Benchmark]: RCFGBuilder took 420.87ms. Allocated memory is still 187.7MB. Free memory was 120.5MB in the beginning and 106.3MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-12 14:42:05,744 INFO L158 Benchmark]: TraceAbstraction took 3913.60ms. Allocated memory was 187.7MB in the beginning and 313.5MB in the end (delta: 125.8MB). Free memory was 105.3MB in the beginning and 175.1MB in the end (delta: -69.9MB). Peak memory consumption was 57.0MB. Max. memory is 8.0GB. [2022-12-12 14:42:05,748 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 187.7MB. Free memory was 163.9MB in the beginning and 163.8MB in the end (delta: 87.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 402.93ms. Allocated memory is still 187.7MB. Free memory was 147.2MB in the beginning and 124.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.45ms. Allocated memory is still 187.7MB. Free memory was 124.1MB in the beginning and 122.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.52ms. Allocated memory is still 187.7MB. Free memory was 122.0MB in the beginning and 121.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 420.87ms. Allocated memory is still 187.7MB. Free memory was 120.5MB in the beginning and 106.3MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 3913.60ms. Allocated memory was 187.7MB in the beginning and 313.5MB in the end (delta: 125.8MB). Free memory was 105.3MB in the beginning and 175.1MB in the end (delta: -69.9MB). Peak memory consumption was 57.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 77 PlacesBefore, 35 PlacesAfterwards, 68 TransitionsBefore, 26 TransitionsAfterwards, 974 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 32 ConcurrentYvCompositions, 0 ChoiceCompositions, 52 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 934, independent: 880, independent conditional: 880, independent unconditional: 0, dependent: 54, dependent conditional: 54, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 934, independent: 880, independent conditional: 0, independent unconditional: 880, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 934, independent: 880, independent conditional: 0, independent unconditional: 880, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 934, independent: 880, independent conditional: 0, independent unconditional: 880, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 741, independent: 708, independent conditional: 0, independent unconditional: 708, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 741, independent: 667, independent conditional: 0, independent unconditional: 667, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 74, independent: 41, independent conditional: 0, independent unconditional: 41, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 116, independent: 56, independent conditional: 0, independent unconditional: 56, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 934, independent: 172, independent conditional: 0, independent unconditional: 172, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 741, unknown conditional: 0, unknown unconditional: 741] , Statistics on independence cache: Total cache size (in pairs): 1086, Positive cache size: 1053, Positive conditional cache size: 0, Positive unconditional cache size: 1053, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, 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 7 procedures, 105 locations, 4 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: 3.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 174 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 174 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 390 IncrementalHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 11 mSDtfsCounter, 390 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=324occurred in iteration=6, InterpolantAutomatonStates: 34, 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, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 404 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 14:42:05,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...