/usr/bin/java -Xmx16000000000 -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-NoLbe-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 04:06:29,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 04:06:29,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 04:06:29,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 04:06:29,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 04:06:29,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 04:06:29,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 04:06:29,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 04:06:29,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 04:06:29,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 04:06:29,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 04:06:29,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 04:06:29,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 04:06:29,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 04:06:29,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 04:06:29,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 04:06:29,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 04:06:29,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 04:06:29,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 04:06:29,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 04:06:29,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 04:06:29,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 04:06:29,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 04:06:29,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 04:06:29,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 04:06:29,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 04:06:29,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 04:06:29,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 04:06:29,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 04:06:29,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 04:06:29,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 04:06:29,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 04:06:29,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 04:06:29,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 04:06:29,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 04:06:29,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 04:06:29,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 04:06:29,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 04:06:29,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 04:06:29,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 04:06:29,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 04:06:29,188 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-NoLbe-Before.epf [2022-01-19 04:06:29,211 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 04:06:29,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 04:06:29,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 04:06:29,213 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 04:06:29,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 04:06:29,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 04:06:29,213 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 04:06:29,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 04:06:29,214 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 04:06:29,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 04:06:29,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 04:06:29,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 04:06:29,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 04:06:29,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 04:06:29,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 04:06:29,215 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 04:06:29,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 04:06:29,215 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 04:06:29,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 04:06:29,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 04:06:29,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 04:06:29,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 04:06:29,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 04:06:29,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 04:06:29,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 04:06:29,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 04:06:29,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 04:06:29,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 04:06:29,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 04:06:29,217 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 04:06:29,217 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 04:06:29,217 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 04:06:29,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 04:06:29,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 04:06:29,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 04:06:29,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 04:06:29,425 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 04:06:29,427 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 04:06:29,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2022-01-19 04:06:29,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8579edad/98c226ca9aad4149b8a3bbf56d3d9010/FLAGb191665fd [2022-01-19 04:06:29,871 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 04:06:29,871 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2022-01-19 04:06:29,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8579edad/98c226ca9aad4149b8a3bbf56d3d9010/FLAGb191665fd [2022-01-19 04:06:29,896 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8579edad/98c226ca9aad4149b8a3bbf56d3d9010 [2022-01-19 04:06:29,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 04:06:29,900 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 04:06:29,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 04:06:29,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 04:06:29,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 04:06:29,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 04:06:29" (1/1) ... [2022-01-19 04:06:29,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fcda8fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:06:29, skipping insertion in model container [2022-01-19 04:06:29,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 04:06:29" (1/1) ... [2022-01-19 04:06:29,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 04:06:29,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 04:06:30,097 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-19 04:06:30,187 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2022-01-19 04:06:30,195 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2022-01-19 04:06:30,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 04:06:30,207 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 04:06:30,215 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-19 04:06:30,230 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2022-01-19 04:06:30,232 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2022-01-19 04:06:30,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 04:06:30,259 INFO L208 MainTranslator]: Completed translation [2022-01-19 04:06:30,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:06:30 WrapperNode [2022-01-19 04:06:30,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 04:06:30,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 04:06:30,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 04:06:30,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 04:06:30,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:06:30" (1/1) ... [2022-01-19 04:06:30,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:06:30" (1/1) ... [2022-01-19 04:06:30,294 INFO L137 Inliner]: procedures = 172, calls = 60, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2022-01-19 04:06:30,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 04:06:30,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 04:06:30,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 04:06:30,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 04:06:30,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:06:30" (1/1) ... [2022-01-19 04:06:30,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:06:30" (1/1) ... [2022-01-19 04:06:30,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:06:30" (1/1) ... [2022-01-19 04:06:30,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:06:30" (1/1) ... [2022-01-19 04:06:30,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:06:30" (1/1) ... [2022-01-19 04:06:30,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:06:30" (1/1) ... [2022-01-19 04:06:30,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:06:30" (1/1) ... [2022-01-19 04:06:30,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 04:06:30,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 04:06:30,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 04:06:30,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 04:06:30,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:06:30" (1/1) ... [2022-01-19 04:06:30,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 04:06:30,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 04:06:30,373 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) [2022-01-19 04:06:30,378 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 [2022-01-19 04:06:30,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 04:06:30,398 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-01-19 04:06:30,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-01-19 04:06:30,398 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-01-19 04:06:30,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-01-19 04:06:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 04:06:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 04:06:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 04:06:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 04:06:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 04:06:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 04:06:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 04:06:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 04:06:30,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 04:06:30,400 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 04:06:30,530 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 04:06:30,531 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 04:06:30,730 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 04:06:30,735 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 04:06:30,735 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-19 04:06:30,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 04:06:30 BoogieIcfgContainer [2022-01-19 04:06:30,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 04:06:30,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 04:06:30,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 04:06:30,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 04:06:30,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 04:06:29" (1/3) ... [2022-01-19 04:06:30,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a3d7c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 04:06:30, skipping insertion in model container [2022-01-19 04:06:30,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:06:30" (2/3) ... [2022-01-19 04:06:30,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a3d7c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 04:06:30, skipping insertion in model container [2022-01-19 04:06:30,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 04:06:30" (3/3) ... [2022-01-19 04:06:30,743 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2022-01-19 04:06:30,748 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 04:06:30,748 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-19 04:06:30,748 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 04:06:30,787 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,787 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,787 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,787 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,787 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,788 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,788 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,788 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,789 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,789 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,789 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,789 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,789 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,790 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,791 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,791 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,791 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,791 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,792 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,792 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,792 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,792 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,793 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,793 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,793 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,794 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,794 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,794 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,794 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,794 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,794 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,795 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,795 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,795 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,796 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,796 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,797 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,797 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,798 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,798 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,798 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,798 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,799 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,799 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,799 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,799 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,799 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,800 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,800 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,800 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,801 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,801 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,801 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,801 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,803 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,804 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,804 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,804 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,804 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,804 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,804 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,804 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,804 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,805 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,805 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,805 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,805 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,805 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,808 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,808 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,808 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,808 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,809 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,809 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,811 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,811 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,812 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,812 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,812 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,812 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:06:30,817 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 04:06:30,865 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 04:06:30,870 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 04:06:30,870 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-19 04:06:30,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 106 transitions, 228 flow [2022-01-19 04:06:30,921 INFO L129 PetriNetUnfolder]: 13/104 cut-off events. [2022-01-19 04:06:30,922 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 04:06:30,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 104 events. 13/104 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 159 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-01-19 04:06:30,927 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 106 transitions, 228 flow [2022-01-19 04:06:30,936 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 94 transitions, 197 flow [2022-01-19 04:06:30,950 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2022-01-19 04:06:30,950 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 04:06:30,951 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:06:30,951 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:06:30,952 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-01-19 04:06:30,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:06:30,955 INFO L85 PathProgramCache]: Analyzing trace with hash -941150824, now seen corresponding path program 1 times [2022-01-19 04:06:30,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:06:30,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220414948] [2022-01-19 04:06:30,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:06:30,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:06:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:06:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:06:31,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:06:31,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220414948] [2022-01-19 04:06:31,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220414948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:06:31,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:06:31,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 04:06:31,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201389480] [2022-01-19 04:06:31,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:06:31,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:06:31,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:06:31,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:06:31,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:06:31,194 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 106 [2022-01-19 04:06:31,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 94 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2022-01-19 04:06:31,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:06:31,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 106 [2022-01-19 04:06:31,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:06:31,257 INFO L129 PetriNetUnfolder]: 19/161 cut-off events. [2022-01-19 04:06:31,257 INFO L130 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-01-19 04:06:31,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 161 events. 19/161 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 545 event pairs, 4 based on Foata normal form. 27/173 useless extension candidates. Maximal degree in co-relation 163. Up to 24 conditions per place. [2022-01-19 04:06:31,262 INFO L132 encePairwiseOnDemand]: 94/106 looper letters, 11 selfloop transitions, 3 changer transitions 1/91 dead transitions. [2022-01-19 04:06:31,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 222 flow [2022-01-19 04:06:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:06:31,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:06:31,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2022-01-19 04:06:31,271 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9119496855345912 [2022-01-19 04:06:31,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2022-01-19 04:06:31,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2022-01-19 04:06:31,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:06:31,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2022-01-19 04:06:31,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2022-01-19 04:06:31,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2022-01-19 04:06:31,285 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2022-01-19 04:06:31,286 INFO L186 Difference]: Start difference. First operand has 88 places, 94 transitions, 197 flow. Second operand 3 states and 290 transitions. [2022-01-19 04:06:31,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 222 flow [2022-01-19 04:06:31,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 215 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 04:06:31,291 INFO L242 Difference]: Finished difference. Result has 89 places, 87 transitions, 196 flow [2022-01-19 04:06:31,292 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2022-01-19 04:06:31,295 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 1 predicate places. [2022-01-19 04:06:31,295 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 196 flow [2022-01-19 04:06:31,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2022-01-19 04:06:31,295 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:06:31,295 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:06:31,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 04:06:31,296 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-01-19 04:06:31,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:06:31,296 INFO L85 PathProgramCache]: Analyzing trace with hash -512241507, now seen corresponding path program 1 times [2022-01-19 04:06:31,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:06:31,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133138300] [2022-01-19 04:06:31,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:06:31,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:06:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:06:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:06:31,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:06:31,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133138300] [2022-01-19 04:06:31,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133138300] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:06:31,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:06:31,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 04:06:31,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914757467] [2022-01-19 04:06:31,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:06:31,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:06:31,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:06:31,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:06:31,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:06:31,350 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 106 [2022-01-19 04:06:31,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2022-01-19 04:06:31,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:06:31,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 106 [2022-01-19 04:06:31,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:06:31,377 INFO L129 PetriNetUnfolder]: 13/141 cut-off events. [2022-01-19 04:06:31,378 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-01-19 04:06:31,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 141 events. 13/141 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 421 event pairs, 5 based on Foata normal form. 7/141 useless extension candidates. Maximal degree in co-relation 146. Up to 22 conditions per place. [2022-01-19 04:06:31,379 INFO L132 encePairwiseOnDemand]: 102/106 looper letters, 9 selfloop transitions, 2 changer transitions 1/88 dead transitions. [2022-01-19 04:06:31,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 88 transitions, 223 flow [2022-01-19 04:06:31,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:06:31,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:06:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2022-01-19 04:06:31,381 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8742138364779874 [2022-01-19 04:06:31,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2022-01-19 04:06:31,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2022-01-19 04:06:31,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:06:31,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2022-01-19 04:06:31,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2022-01-19 04:06:31,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2022-01-19 04:06:31,384 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2022-01-19 04:06:31,384 INFO L186 Difference]: Start difference. First operand has 89 places, 87 transitions, 196 flow. Second operand 3 states and 278 transitions. [2022-01-19 04:06:31,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 88 transitions, 223 flow [2022-01-19 04:06:31,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 217 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 04:06:31,386 INFO L242 Difference]: Finished difference. Result has 89 places, 87 transitions, 200 flow [2022-01-19 04:06:31,386 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2022-01-19 04:06:31,387 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 1 predicate places. [2022-01-19 04:06:31,387 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 200 flow [2022-01-19 04:06:31,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2022-01-19 04:06:31,387 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:06:31,387 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:06:31,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 04:06:31,388 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-01-19 04:06:31,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:06:31,388 INFO L85 PathProgramCache]: Analyzing trace with hash 348438304, now seen corresponding path program 1 times [2022-01-19 04:06:31,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:06:31,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282962162] [2022-01-19 04:06:31,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:06:31,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:06:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:06:31,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:06:31,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:06:31,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282962162] [2022-01-19 04:06:31,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282962162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:06:31,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:06:31,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:06:31,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382437060] [2022-01-19 04:06:31,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:06:31,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 04:06:31,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:06:31,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 04:06:31,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 04:06:31,432 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 106 [2022-01-19 04:06:31,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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) [2022-01-19 04:06:31,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:06:31,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 106 [2022-01-19 04:06:31,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:06:31,511 INFO L129 PetriNetUnfolder]: 62/314 cut-off events. [2022-01-19 04:06:31,511 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-01-19 04:06:31,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 314 events. 62/314 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1518 event pairs, 5 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 345. Up to 45 conditions per place. [2022-01-19 04:06:31,514 INFO L132 encePairwiseOnDemand]: 99/106 looper letters, 15 selfloop transitions, 10 changer transitions 0/100 dead transitions. [2022-01-19 04:06:31,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 100 transitions, 279 flow [2022-01-19 04:06:31,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 04:06:31,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 04:06:31,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 457 transitions. [2022-01-19 04:06:31,518 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8622641509433963 [2022-01-19 04:06:31,518 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 457 transitions. [2022-01-19 04:06:31,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 457 transitions. [2022-01-19 04:06:31,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:06:31,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 457 transitions. [2022-01-19 04:06:31,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 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) [2022-01-19 04:06:31,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 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) [2022-01-19 04:06:31,523 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 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) [2022-01-19 04:06:31,523 INFO L186 Difference]: Start difference. First operand has 89 places, 87 transitions, 200 flow. Second operand 5 states and 457 transitions. [2022-01-19 04:06:31,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 100 transitions, 279 flow [2022-01-19 04:06:31,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 100 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 04:06:31,530 INFO L242 Difference]: Finished difference. Result has 95 places, 93 transitions, 255 flow [2022-01-19 04:06:31,530 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=95, PETRI_TRANSITIONS=93} [2022-01-19 04:06:31,531 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 7 predicate places. [2022-01-19 04:06:31,532 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 93 transitions, 255 flow [2022-01-19 04:06:31,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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) [2022-01-19 04:06:31,532 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:06:31,532 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:06:31,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 04:06:31,532 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-01-19 04:06:31,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:06:31,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1547542394, now seen corresponding path program 2 times [2022-01-19 04:06:31,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:06:31,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749979672] [2022-01-19 04:06:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:06:31,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:06:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:06:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:06:31,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:06:31,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749979672] [2022-01-19 04:06:31,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749979672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:06:31,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:06:31,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:06:31,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364749197] [2022-01-19 04:06:31,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:06:31,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 04:06:31,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:06:31,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 04:06:31,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 04:06:31,601 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 106 [2022-01-19 04:06:31,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 93 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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) [2022-01-19 04:06:31,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:06:31,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 106 [2022-01-19 04:06:31,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:06:31,668 INFO L129 PetriNetUnfolder]: 103/397 cut-off events. [2022-01-19 04:06:31,668 INFO L130 PetriNetUnfolder]: For 63/64 co-relation queries the response was YES. [2022-01-19 04:06:31,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 397 events. 103/397 cut-off events. For 63/64 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2003 event pairs, 14 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 575. Up to 49 conditions per place. [2022-01-19 04:06:31,670 INFO L132 encePairwiseOnDemand]: 99/106 looper letters, 0 selfloop transitions, 0 changer transitions 101/101 dead transitions. [2022-01-19 04:06:31,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 101 transitions, 316 flow [2022-01-19 04:06:31,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 04:06:31,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 04:06:31,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 456 transitions. [2022-01-19 04:06:31,672 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8603773584905661 [2022-01-19 04:06:31,672 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 456 transitions. [2022-01-19 04:06:31,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 456 transitions. [2022-01-19 04:06:31,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:06:31,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 456 transitions. [2022-01-19 04:06:31,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 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) [2022-01-19 04:06:31,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 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) [2022-01-19 04:06:31,674 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 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) [2022-01-19 04:06:31,674 INFO L186 Difference]: Start difference. First operand has 95 places, 93 transitions, 255 flow. Second operand 5 states and 456 transitions. [2022-01-19 04:06:31,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 101 transitions, 316 flow [2022-01-19 04:06:31,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 101 transitions, 310 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-01-19 04:06:31,678 INFO L242 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2022-01-19 04:06:31,678 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2022-01-19 04:06:31,679 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 6 predicate places. [2022-01-19 04:06:31,679 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2022-01-19 04:06:31,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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) [2022-01-19 04:06:31,681 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-01-19 04:06:31,682 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-01-19 04:06:31,682 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2022-01-19 04:06:31,682 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2022-01-19 04:06:31,682 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-01-19 04:06:31,682 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-01-19 04:06:31,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 04:06:31,686 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-01-19 04:06:31,689 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 04:06:31,689 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 04:06:31,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 04:06:31 BasicIcfg [2022-01-19 04:06:31,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 04:06:31,696 INFO L158 Benchmark]: Toolchain (without parser) took 1795.76ms. Allocated memory was 423.6MB in the beginning and 639.6MB in the end (delta: 216.0MB). Free memory was 367.4MB in the beginning and 577.3MB in the end (delta: -209.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.0GB. [2022-01-19 04:06:31,696 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 423.6MB. Free memory is still 385.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 04:06:31,697 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.82ms. Allocated memory was 423.6MB in the beginning and 639.6MB in the end (delta: 216.0MB). Free memory was 367.2MB in the beginning and 600.9MB in the end (delta: -233.8MB). Peak memory consumption was 7.1MB. Max. memory is 16.0GB. [2022-01-19 04:06:31,697 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.27ms. Allocated memory is still 639.6MB. Free memory was 600.9MB in the beginning and 599.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 04:06:31,697 INFO L158 Benchmark]: Boogie Preprocessor took 31.40ms. Allocated memory is still 639.6MB. Free memory was 599.0MB in the beginning and 597.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 04:06:31,699 INFO L158 Benchmark]: RCFGBuilder took 410.63ms. Allocated memory is still 639.6MB. Free memory was 597.3MB in the beginning and 584.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 04:06:31,699 INFO L158 Benchmark]: TraceAbstraction took 957.28ms. Allocated memory is still 639.6MB. Free memory was 584.2MB in the beginning and 577.3MB in the end (delta: 7.0MB). Peak memory consumption was 8.5MB. Max. memory is 16.0GB. [2022-01-19 04:06:31,701 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 423.6MB. Free memory is still 385.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 356.82ms. Allocated memory was 423.6MB in the beginning and 639.6MB in the end (delta: 216.0MB). Free memory was 367.2MB in the beginning and 600.9MB in the end (delta: -233.8MB). Peak memory consumption was 7.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.27ms. Allocated memory is still 639.6MB. Free memory was 600.9MB in the beginning and 599.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.40ms. Allocated memory is still 639.6MB. Free memory was 599.0MB in the beginning and 597.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 410.63ms. Allocated memory is still 639.6MB. Free memory was 597.3MB in the beginning and 584.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 957.28ms. Allocated memory is still 639.6MB. Free memory was 584.2MB in the beginning and 577.3MB in the end (delta: 7.0MB). Peak memory consumption was 8.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 739]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 138 locations, 6 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: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85 IncrementalHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 36 mSDtfsCounter, 85 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=255occurred in iteration=3, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 04:06:31,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...