/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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 20:27:04,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 20:27:04,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 20:27:04,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 20:27:04,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 20:27:04,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 20:27:04,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 20:27:04,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 20:27:04,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 20:27:04,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 20:27:04,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 20:27:04,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 20:27:04,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 20:27:04,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 20:27:04,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 20:27:04,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 20:27:04,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 20:27:04,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 20:27:04,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 20:27:04,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 20:27:04,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 20:27:04,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 20:27:04,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 20:27:04,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 20:27:04,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 20:27:04,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 20:27:04,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 20:27:04,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 20:27:04,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 20:27:04,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 20:27:04,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 20:27:04,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 20:27:04,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 20:27:04,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 20:27:04,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 20:27:04,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 20:27:04,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 20:27:04,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 20:27:04,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 20:27:04,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 20:27:04,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 20:27:04,237 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 [2022-12-05 20:27:04,263 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 20:27:04,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 20:27:04,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 20:27:04,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 20:27:04,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 20:27:04,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 20:27:04,265 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 20:27:04,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 20:27:04,266 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 20:27:04,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 20:27:04,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 20:27:04,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 20:27:04,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 20:27:04,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 20:27:04,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 20:27:04,267 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 20:27:04,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 20:27:04,267 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 20:27:04,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 20:27:04,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 20:27:04,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 20:27:04,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 20:27:04,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 20:27:04,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:27:04,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 20:27:04,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 20:27:04,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 20:27:04,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 20:27:04,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 20:27:04,269 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 20:27:04,269 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 20:27:04,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 20:27:04,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 20:27:04,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 20:27:04,569 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 20:27:04,569 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 20:27:04,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-05 20:27:05,634 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 20:27:05,836 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 20:27:05,836 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-05 20:27:05,847 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d53518659/00b68fe6893e46e2a79299a98280abc5/FLAG5dbd28fc8 [2022-12-05 20:27:05,857 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d53518659/00b68fe6893e46e2a79299a98280abc5 [2022-12-05 20:27:05,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 20:27:05,860 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 20:27:05,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 20:27:05,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 20:27:05,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 20:27:05,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:27:05" (1/1) ... [2022-12-05 20:27:05,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e853e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:05, skipping insertion in model container [2022-12-05 20:27:05,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:27:05" (1/1) ... [2022-12-05 20:27:05,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 20:27:05,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 20:27:05,992 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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-05 20:27:06,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,125 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,126 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,126 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,126 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,130 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:27:06,138 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 20:27:06,151 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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-05 20:27:06,170 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,170 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,174 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,174 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,176 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,176 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,176 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,177 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,177 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:27:06,177 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:27:06,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:27:06,203 INFO L208 MainTranslator]: Completed translation [2022-12-05 20:27:06,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:06 WrapperNode [2022-12-05 20:27:06,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 20:27:06,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 20:27:06,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 20:27:06,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 20:27:06,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:06" (1/1) ... [2022-12-05 20:27:06,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:06" (1/1) ... [2022-12-05 20:27:06,240 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-05 20:27:06,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 20:27:06,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 20:27:06,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 20:27:06,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 20:27:06,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:06" (1/1) ... [2022-12-05 20:27:06,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:06" (1/1) ... [2022-12-05 20:27:06,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:06" (1/1) ... [2022-12-05 20:27:06,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:06" (1/1) ... [2022-12-05 20:27:06,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:06" (1/1) ... [2022-12-05 20:27:06,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:06" (1/1) ... [2022-12-05 20:27:06,255 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:06" (1/1) ... [2022-12-05 20:27:06,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:06" (1/1) ... [2022-12-05 20:27:06,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 20:27:06,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 20:27:06,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 20:27:06,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 20:27:06,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:06" (1/1) ... [2022-12-05 20:27:06,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:27:06,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:27:06,284 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) [2022-12-05 20:27:06,306 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 [2022-12-05 20:27:06,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 20:27:06,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 20:27:06,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 20:27:06,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 20:27:06,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 20:27:06,339 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-05 20:27:06,339 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-05 20:27:06,340 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-05 20:27:06,340 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-05 20:27:06,340 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-05 20:27:06,340 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-05 20:27:06,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 20:27:06,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 20:27:06,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 20:27:06,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 20:27:06,341 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 20:27:06,496 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 20:27:06,498 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 20:27:06,682 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 20:27:06,687 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 20:27:06,688 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 20:27:06,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:27:06 BoogieIcfgContainer [2022-12-05 20:27:06,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 20:27:06,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 20:27:06,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 20:27:06,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 20:27:06,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:27:05" (1/3) ... [2022-12-05 20:27:06,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df3d843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:27:06, skipping insertion in model container [2022-12-05 20:27:06,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:27:06" (2/3) ... [2022-12-05 20:27:06,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df3d843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:27:06, skipping insertion in model container [2022-12-05 20:27:06,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:27:06" (3/3) ... [2022-12-05 20:27:06,698 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-05 20:27:06,713 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 20:27:06,713 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 20:27:06,713 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 20:27:06,775 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-05 20:27:06,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2022-12-05 20:27:06,836 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2022-12-05 20:27:06,836 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:27:06,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-12-05 20:27:06,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2022-12-05 20:27:06,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2022-12-05 20:27:06,847 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 20:27:06,868 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2022-12-05 20:27:06,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2022-12-05 20:27:06,886 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2022-12-05 20:27:06,886 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:27:06,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 34 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2022-12-05 20:27:06,889 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2022-12-05 20:27:06,889 INFO L188 LiptonReduction]: Number of co-enabled transitions 974 [2022-12-05 20:27:08,674 INFO L203 LiptonReduction]: Total number of compositions: 53 [2022-12-05 20:27:08,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 20:27:08,701 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;@5bd72619, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 20:27:08,701 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 20:27:08,709 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2022-12-05 20:27:08,709 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:27:08,709 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:08,710 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:08,710 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)] === [2022-12-05 20:27:08,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:08,714 INFO L85 PathProgramCache]: Analyzing trace with hash -992694487, now seen corresponding path program 1 times [2022-12-05 20:27:08,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:08,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521551884] [2022-12-05 20:27:08,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:08,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:09,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:09,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521551884] [2022-12-05 20:27:09,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521551884] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:09,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:09,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 20:27:09,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924941184] [2022-12-05 20:27:09,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:09,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:27:09,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:09,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:27:09,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:27:09,082 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 17 [2022-12-05 20:27:09,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-12-05 20:27:09,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:09,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 17 [2022-12-05 20:27:09,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:09,193 INFO L130 PetriNetUnfolder]: 222/384 cut-off events. [2022-12-05 20:27:09,193 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-12-05 20:27:09,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 384 events. 222/384 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1502 event pairs, 69 based on Foata normal form. 3/387 useless extension candidates. Maximal degree in co-relation 772. Up to 340 conditions per place. [2022-12-05 20:27:09,204 INFO L137 encePairwiseOnDemand]: 12/17 looper letters, 21 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2022-12-05 20:27:09,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 25 transitions, 113 flow [2022-12-05 20:27:09,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:27:09,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:27:09,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 30 transitions. [2022-12-05 20:27:09,213 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2022-12-05 20:27:09,214 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states and 30 transitions. [2022-12-05 20:27:09,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 25 transitions, 113 flow [2022-12-05 20:27:09,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 108 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 20:27:09,217 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 57 flow [2022-12-05 20:27:09,218 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2022-12-05 20:27:09,222 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2022-12-05 20:27:09,223 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 57 flow [2022-12-05 20:27:09,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-12-05 20:27:09,223 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:09,223 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:09,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 20:27:09,224 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)] === [2022-12-05 20:27:09,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:09,224 INFO L85 PathProgramCache]: Analyzing trace with hash -708758897, now seen corresponding path program 1 times [2022-12-05 20:27:09,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:09,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119205717] [2022-12-05 20:27:09,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:09,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:09,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:09,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119205717] [2022-12-05 20:27:09,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119205717] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:09,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:09,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:27:09,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433546021] [2022-12-05 20:27:09,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:09,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:27:09,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:09,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:27:09,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:27:09,359 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 17 [2022-12-05 20:27:09,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-12-05 20:27:09,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:09,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 17 [2022-12-05 20:27:09,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:09,447 INFO L130 PetriNetUnfolder]: 201/354 cut-off events. [2022-12-05 20:27:09,447 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-12-05 20:27:09,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 354 events. 201/354 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1295 event pairs, 75 based on Foata normal form. 9/363 useless extension candidates. Maximal degree in co-relation 812. Up to 211 conditions per place. [2022-12-05 20:27:09,467 INFO L137 encePairwiseOnDemand]: 14/17 looper letters, 19 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2022-12-05 20:27:09,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 111 flow [2022-12-05 20:27:09,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:27:09,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:27:09,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 25 transitions. [2022-12-05 20:27:09,468 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2022-12-05 20:27:09,469 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 57 flow. Second operand 3 states and 25 transitions. [2022-12-05 20:27:09,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 111 flow [2022-12-05 20:27:09,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:27:09,470 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 65 flow [2022-12-05 20:27:09,470 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2022-12-05 20:27:09,470 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2022-12-05 20:27:09,471 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 65 flow [2022-12-05 20:27:09,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-12-05 20:27:09,471 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:09,471 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:09,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 20:27:09,471 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)] === [2022-12-05 20:27:09,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:09,471 INFO L85 PathProgramCache]: Analyzing trace with hash -708758215, now seen corresponding path program 1 times [2022-12-05 20:27:09,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:09,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134029773] [2022-12-05 20:27:09,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:09,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:09,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:09,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134029773] [2022-12-05 20:27:09,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134029773] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:09,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:09,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:27:09,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081354827] [2022-12-05 20:27:09,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:09,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:27:09,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:09,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:27:09,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:27:09,664 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 17 [2022-12-05 20:27:09,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-12-05 20:27:09,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:09,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 17 [2022-12-05 20:27:09,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:09,750 INFO L130 PetriNetUnfolder]: 256/448 cut-off events. [2022-12-05 20:27:09,750 INFO L131 PetriNetUnfolder]: For 190/190 co-relation queries the response was YES. [2022-12-05 20:27:09,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 448 events. 256/448 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1908 event pairs, 49 based on Foata normal form. 24/469 useless extension candidates. Maximal degree in co-relation 1057. Up to 233 conditions per place. [2022-12-05 20:27:09,753 INFO L137 encePairwiseOnDemand]: 11/17 looper letters, 32 selfloop transitions, 11 changer transitions 2/46 dead transitions. [2022-12-05 20:27:09,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 239 flow [2022-12-05 20:27:09,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:27:09,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:27:09,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2022-12-05 20:27:09,755 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2022-12-05 20:27:09,755 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 65 flow. Second operand 5 states and 50 transitions. [2022-12-05 20:27:09,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 239 flow [2022-12-05 20:27:09,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 229 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 20:27:09,757 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 139 flow [2022-12-05 20:27:09,757 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2022-12-05 20:27:09,758 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2022-12-05 20:27:09,758 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 139 flow [2022-12-05 20:27:09,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-12-05 20:27:09,758 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:09,758 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:09,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 20:27:09,759 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)] === [2022-12-05 20:27:09,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:09,759 INFO L85 PathProgramCache]: Analyzing trace with hash -496648194, now seen corresponding path program 1 times [2022-12-05 20:27:09,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:09,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114124042] [2022-12-05 20:27:09,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:09,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:09,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:09,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114124042] [2022-12-05 20:27:09,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114124042] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:09,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:09,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:27:09,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952847168] [2022-12-05 20:27:09,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:09,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:27:09,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:09,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:27:09,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:27:09,832 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 17 [2022-12-05 20:27:09,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-12-05 20:27:09,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:09,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 17 [2022-12-05 20:27:09,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:09,887 INFO L130 PetriNetUnfolder]: 248/439 cut-off events. [2022-12-05 20:27:09,887 INFO L131 PetriNetUnfolder]: For 426/426 co-relation queries the response was YES. [2022-12-05 20:27:09,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 439 events. 248/439 cut-off events. For 426/426 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1889 event pairs, 121 based on Foata normal form. 4/441 useless extension candidates. Maximal degree in co-relation 1318. Up to 357 conditions per place. [2022-12-05 20:27:09,890 INFO L137 encePairwiseOnDemand]: 14/17 looper letters, 27 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2022-12-05 20:27:09,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 229 flow [2022-12-05 20:27:09,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:27:09,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:27:09,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2022-12-05 20:27:09,891 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2022-12-05 20:27:09,891 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 139 flow. Second operand 3 states and 28 transitions. [2022-12-05 20:27:09,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 229 flow [2022-12-05 20:27:09,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 229 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 20:27:09,893 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 159 flow [2022-12-05 20:27:09,893 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2022-12-05 20:27:09,894 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2022-12-05 20:27:09,894 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 159 flow [2022-12-05 20:27:09,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-12-05 20:27:09,894 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:09,894 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:09,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 20:27:09,895 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)] === [2022-12-05 20:27:09,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:09,895 INFO L85 PathProgramCache]: Analyzing trace with hash -496669057, now seen corresponding path program 1 times [2022-12-05 20:27:09,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:09,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212428523] [2022-12-05 20:27:09,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:09,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:09,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:09,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212428523] [2022-12-05 20:27:09,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212428523] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:09,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:09,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:27:09,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300421765] [2022-12-05 20:27:09,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:09,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:27:09,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:09,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:27:09,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:27:09,989 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 17 [2022-12-05 20:27:09,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-12-05 20:27:09,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:09,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 17 [2022-12-05 20:27:09,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:10,053 INFO L130 PetriNetUnfolder]: 263/472 cut-off events. [2022-12-05 20:27:10,054 INFO L131 PetriNetUnfolder]: For 674/674 co-relation queries the response was YES. [2022-12-05 20:27:10,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 472 events. 263/472 cut-off events. For 674/674 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2161 event pairs, 53 based on Foata normal form. 18/488 useless extension candidates. Maximal degree in co-relation 1440. Up to 232 conditions per place. [2022-12-05 20:27:10,056 INFO L137 encePairwiseOnDemand]: 13/17 looper letters, 23 selfloop transitions, 5 changer transitions 8/37 dead transitions. [2022-12-05 20:27:10,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 37 transitions, 263 flow [2022-12-05 20:27:10,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:27:10,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:27:10,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 35 transitions. [2022-12-05 20:27:10,059 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5147058823529411 [2022-12-05 20:27:10,059 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 159 flow. Second operand 4 states and 35 transitions. [2022-12-05 20:27:10,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 37 transitions, 263 flow [2022-12-05 20:27:10,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 249 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-05 20:27:10,063 INFO L231 Difference]: Finished difference. Result has 39 places, 20 transitions, 124 flow [2022-12-05 20:27:10,063 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=39, PETRI_TRANSITIONS=20} [2022-12-05 20:27:10,065 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2022-12-05 20:27:10,065 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 20 transitions, 124 flow [2022-12-05 20:27:10,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-12-05 20:27:10,065 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:10,065 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:10,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 20:27:10,066 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)] === [2022-12-05 20:27:10,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:10,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1748407900, now seen corresponding path program 1 times [2022-12-05 20:27:10,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:10,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969831012] [2022-12-05 20:27:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:10,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:10,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:10,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969831012] [2022-12-05 20:27:10,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969831012] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:10,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:10,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:27:10,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643584018] [2022-12-05 20:27:10,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:10,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:27:10,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:10,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:27:10,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:27:10,182 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 17 [2022-12-05 20:27:10,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 20 transitions, 124 flow. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-12-05 20:27:10,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:10,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 17 [2022-12-05 20:27:10,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:10,240 INFO L130 PetriNetUnfolder]: 195/336 cut-off events. [2022-12-05 20:27:10,240 INFO L131 PetriNetUnfolder]: For 964/964 co-relation queries the response was YES. [2022-12-05 20:27:10,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1121 conditions, 336 events. 195/336 cut-off events. For 964/964 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1072 event pairs, 87 based on Foata normal form. 18/354 useless extension candidates. Maximal degree in co-relation 1100. Up to 164 conditions per place. [2022-12-05 20:27:10,242 INFO L137 encePairwiseOnDemand]: 13/17 looper letters, 18 selfloop transitions, 3 changer transitions 9/30 dead transitions. [2022-12-05 20:27:10,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 30 transitions, 217 flow [2022-12-05 20:27:10,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:27:10,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:27:10,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2022-12-05 20:27:10,243 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2022-12-05 20:27:10,243 INFO L175 Difference]: Start difference. First operand has 39 places, 20 transitions, 124 flow. Second operand 4 states and 28 transitions. [2022-12-05 20:27:10,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 30 transitions, 217 flow [2022-12-05 20:27:10,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 192 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-12-05 20:27:10,246 INFO L231 Difference]: Finished difference. Result has 38 places, 16 transitions, 88 flow [2022-12-05 20:27:10,246 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=38, PETRI_TRANSITIONS=16} [2022-12-05 20:27:10,248 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2022-12-05 20:27:10,248 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 16 transitions, 88 flow [2022-12-05 20:27:10,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-12-05 20:27:10,248 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:10,248 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:10,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 20:27:10,253 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)] === [2022-12-05 20:27:10,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:10,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1117275041, now seen corresponding path program 1 times [2022-12-05 20:27:10,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:10,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598571523] [2022-12-05 20:27:10,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:10,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:10,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:10,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598571523] [2022-12-05 20:27:10,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598571523] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:10,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:10,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:27:10,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519949887] [2022-12-05 20:27:10,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:10,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:27:10,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:10,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:27:10,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:27:10,328 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 17 [2022-12-05 20:27:10,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 16 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-12-05 20:27:10,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:10,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 17 [2022-12-05 20:27:10,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:10,354 INFO L130 PetriNetUnfolder]: 43/96 cut-off events. [2022-12-05 20:27:10,354 INFO L131 PetriNetUnfolder]: For 262/262 co-relation queries the response was YES. [2022-12-05 20:27:10,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 96 events. 43/96 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 237 event pairs, 22 based on Foata normal form. 4/100 useless extension candidates. Maximal degree in co-relation 333. Up to 73 conditions per place. [2022-12-05 20:27:10,355 INFO L137 encePairwiseOnDemand]: 12/17 looper letters, 17 selfloop transitions, 4 changer transitions 0/23 dead transitions. [2022-12-05 20:27:10,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 23 transitions, 160 flow [2022-12-05 20:27:10,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:27:10,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:27:10,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2022-12-05 20:27:10,357 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2022-12-05 20:27:10,357 INFO L175 Difference]: Start difference. First operand has 38 places, 16 transitions, 88 flow. Second operand 3 states and 28 transitions. [2022-12-05 20:27:10,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 23 transitions, 160 flow [2022-12-05 20:27:10,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 23 transitions, 117 flow, removed 8 selfloop flow, removed 10 redundant places. [2022-12-05 20:27:10,359 INFO L231 Difference]: Finished difference. Result has 30 places, 19 transitions, 82 flow [2022-12-05 20:27:10,359 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2022-12-05 20:27:10,359 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2022-12-05 20:27:10,359 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 82 flow [2022-12-05 20:27:10,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-12-05 20:27:10,359 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:10,360 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:10,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 20:27:10,360 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)] === [2022-12-05 20:27:10,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:10,360 INFO L85 PathProgramCache]: Analyzing trace with hash -548515770, now seen corresponding path program 1 times [2022-12-05 20:27:10,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:10,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550480525] [2022-12-05 20:27:10,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:10,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:10,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:10,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550480525] [2022-12-05 20:27:10,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550480525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:10,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:10,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:27:10,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569132435] [2022-12-05 20:27:10,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:10,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:27:10,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:10,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:27:10,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:27:10,451 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 17 [2022-12-05 20:27:10,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-12-05 20:27:10,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:10,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 17 [2022-12-05 20:27:10,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:10,484 INFO L130 PetriNetUnfolder]: 22/60 cut-off events. [2022-12-05 20:27:10,485 INFO L131 PetriNetUnfolder]: For 42/48 co-relation queries the response was YES. [2022-12-05 20:27:10,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 60 events. 22/60 cut-off events. For 42/48 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 117 event pairs, 5 based on Foata normal form. 8/67 useless extension candidates. Maximal degree in co-relation 194. Up to 31 conditions per place. [2022-12-05 20:27:10,485 INFO L137 encePairwiseOnDemand]: 12/17 looper letters, 18 selfloop transitions, 7 changer transitions 0/27 dead transitions. [2022-12-05 20:27:10,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 160 flow [2022-12-05 20:27:10,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:27:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:27:10,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 34 transitions. [2022-12-05 20:27:10,488 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-05 20:27:10,488 INFO L175 Difference]: Start difference. First operand has 30 places, 19 transitions, 82 flow. Second operand 4 states and 34 transitions. [2022-12-05 20:27:10,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 160 flow [2022-12-05 20:27:10,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:27:10,489 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 118 flow [2022-12-05 20:27:10,489 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2022-12-05 20:27:10,490 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2022-12-05 20:27:10,491 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 118 flow [2022-12-05 20:27:10,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-12-05 20:27:10,491 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:10,491 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:10,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 20:27:10,491 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 20:27:10,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:10,492 INFO L85 PathProgramCache]: Analyzing trace with hash 127565198, now seen corresponding path program 1 times [2022-12-05 20:27:10,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:10,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507941667] [2022-12-05 20:27:10,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:10,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:10,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:10,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507941667] [2022-12-05 20:27:10,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507941667] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:10,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:10,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 20:27:10,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566620831] [2022-12-05 20:27:10,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:10,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:27:10,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:10,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:27:10,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:27:10,607 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 17 [2022-12-05 20:27:10,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2022-12-05 20:27:10,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:10,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 17 [2022-12-05 20:27:10,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:10,637 INFO L130 PetriNetUnfolder]: 14/42 cut-off events. [2022-12-05 20:27:10,637 INFO L131 PetriNetUnfolder]: For 64/82 co-relation queries the response was YES. [2022-12-05 20:27:10,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 42 events. 14/42 cut-off events. For 64/82 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 60 event pairs, 2 based on Foata normal form. 12/53 useless extension candidates. Maximal degree in co-relation 152. Up to 21 conditions per place. [2022-12-05 20:27:10,638 INFO L137 encePairwiseOnDemand]: 12/17 looper letters, 15 selfloop transitions, 10 changer transitions 0/27 dead transitions. [2022-12-05 20:27:10,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 184 flow [2022-12-05 20:27:10,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:27:10,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:27:10,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 36 transitions. [2022-12-05 20:27:10,640 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4235294117647059 [2022-12-05 20:27:10,640 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 118 flow. Second operand 5 states and 36 transitions. [2022-12-05 20:27:10,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 184 flow [2022-12-05 20:27:10,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 151 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-12-05 20:27:10,642 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 116 flow [2022-12-05 20:27:10,642 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2022-12-05 20:27:10,643 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2022-12-05 20:27:10,643 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 116 flow [2022-12-05 20:27:10,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2022-12-05 20:27:10,643 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:27:10,643 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:10,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 20:27:10,644 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 20:27:10,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:27:10,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1680786828, now seen corresponding path program 1 times [2022-12-05 20:27:10,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:27:10,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596701920] [2022-12-05 20:27:10,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:27:10,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:27:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:27:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:27:10,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:27:10,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596701920] [2022-12-05 20:27:10,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596701920] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:27:10,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:27:10,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:27:10,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659490638] [2022-12-05 20:27:10,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:27:10,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:27:10,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:27:10,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:27:10,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:27:10,732 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 17 [2022-12-05 20:27:10,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-12-05 20:27:10,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:27:10,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 17 [2022-12-05 20:27:10,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:27:10,758 INFO L130 PetriNetUnfolder]: 18/49 cut-off events. [2022-12-05 20:27:10,759 INFO L131 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2022-12-05 20:27:10,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 49 events. 18/49 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 4 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 170. Up to 24 conditions per place. [2022-12-05 20:27:10,759 INFO L137 encePairwiseOnDemand]: 14/17 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2022-12-05 20:27:10,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 202 flow [2022-12-05 20:27:10,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:27:10,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:27:10,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2022-12-05 20:27:10,760 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3382352941176471 [2022-12-05 20:27:10,760 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 116 flow. Second operand 4 states and 23 transitions. [2022-12-05 20:27:10,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 202 flow [2022-12-05 20:27:10,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 170 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-05 20:27:10,761 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2022-12-05 20:27:10,761 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2022-12-05 20:27:10,762 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2022-12-05 20:27:10,762 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2022-12-05 20:27:10,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-12-05 20:27:10,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-05 20:27:10,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-05 20:27:10,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-05 20:27:10,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-05 20:27:10,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 20:27:10,764 INFO L458 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:27:10,766 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 20:27:10,766 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 20:27:10,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 08:27:10 BasicIcfg [2022-12-05 20:27:10,769 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 20:27:10,769 INFO L158 Benchmark]: Toolchain (without parser) took 4909.80ms. Allocated memory was 167.8MB in the beginning and 260.0MB in the end (delta: 92.3MB). Free memory was 142.7MB in the beginning and 140.8MB in the end (delta: 1.9MB). Peak memory consumption was 94.7MB. Max. memory is 8.0GB. [2022-12-05 20:27:10,769 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 167.8MB. Free memory is still 143.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:27:10,770 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.48ms. Allocated memory is still 167.8MB. Free memory was 142.2MB in the beginning and 119.6MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-05 20:27:10,770 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.11ms. Allocated memory is still 167.8MB. Free memory was 119.6MB in the beginning and 117.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 20:27:10,770 INFO L158 Benchmark]: Boogie Preprocessor took 17.13ms. Allocated memory is still 167.8MB. Free memory was 117.5MB in the beginning and 115.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 20:27:10,770 INFO L158 Benchmark]: RCFGBuilder took 430.83ms. Allocated memory is still 167.8MB. Free memory was 115.9MB in the beginning and 102.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-05 20:27:10,770 INFO L158 Benchmark]: TraceAbstraction took 4077.88ms. Allocated memory was 167.8MB in the beginning and 260.0MB in the end (delta: 92.3MB). Free memory was 101.8MB in the beginning and 140.8MB in the end (delta: -39.0MB). Peak memory consumption was 53.8MB. Max. memory is 8.0GB. [2022-12-05 20:27:10,771 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 167.8MB. Free memory is still 143.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 343.48ms. Allocated memory is still 167.8MB. Free memory was 142.2MB in the beginning and 119.6MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.11ms. Allocated memory is still 167.8MB. Free memory was 119.6MB in the beginning and 117.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.13ms. Allocated memory is still 167.8MB. Free memory was 117.5MB in the beginning and 115.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 430.83ms. Allocated memory is still 167.8MB. Free memory was 115.9MB in the beginning and 102.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4077.88ms. Allocated memory was 167.8MB in the beginning and 260.0MB in the end (delta: 92.3MB). Free memory was 101.8MB in the beginning and 140.8MB in the end (delta: -39.0MB). Peak memory consumption was 53.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 78 PlacesBefore, 26 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 974 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 32 ConcurrentYvCompositions, 0 ChoiceCompositions, 53 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 678, independent: 642, independent conditional: 642, independent unconditional: 0, dependent: 36, dependent conditional: 36, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 678, independent: 642, independent conditional: 0, independent unconditional: 642, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 678, independent: 642, independent conditional: 0, independent unconditional: 642, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 678, independent: 642, independent conditional: 0, independent unconditional: 642, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 612, independent: 584, independent conditional: 0, independent unconditional: 584, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 612, independent: 575, independent conditional: 0, independent unconditional: 575, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 37, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 112, independent: 15, independent conditional: 0, independent unconditional: 15, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 678, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 612, unknown conditional: 0, unknown unconditional: 612] , Statistics on independence cache: Total cache size (in pairs): 873, Positive cache size: 845, Positive conditional cache size: 0, Positive unconditional cache size: 845, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 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: 4.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 145 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 145 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 344 IncrementalHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 5 mSDtfsCounter, 344 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=159occurred in iteration=4, InterpolantAutomatonStates: 38, 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, 1.0s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 404 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! [2022-12-05 20:27:10,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...