/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_unsafe-10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 18:41:09,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 18:41:09,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 18:41:09,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 18:41:09,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 18:41:09,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 18:41:09,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 18:41:09,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 18:41:09,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 18:41:09,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 18:41:09,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 18:41:09,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 18:41:09,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 18:41:09,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 18:41:09,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 18:41:09,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 18:41:09,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 18:41:09,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 18:41:09,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 18:41:09,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 18:41:09,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 18:41:09,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 18:41:09,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 18:41:09,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 18:41:09,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 18:41:09,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 18:41:09,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 18:41:09,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 18:41:09,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 18:41:09,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 18:41:09,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 18:41:09,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 18:41:09,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 18:41:09,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 18:41:09,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 18:41:09,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 18:41:09,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 18:41:09,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 18:41:09,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 18:41:09,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 18:41:09,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 18:41:09,109 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.epf [2022-12-11 18:41:09,140 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 18:41:09,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 18:41:09,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 18:41:09,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 18:41:09,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 18:41:09,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 18:41:09,143 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 18:41:09,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 18:41:09,143 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 18:41:09,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 18:41:09,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 18:41:09,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 18:41:09,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 18:41:09,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 18:41:09,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 18:41:09,145 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 18:41:09,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 18:41:09,145 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 18:41:09,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 18:41:09,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 18:41:09,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 18:41:09,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 18:41:09,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 18:41:09,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 18:41:09,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 18:41:09,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 18:41:09,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 18:41:09,147 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 18:41:09,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 18:41:09,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 18:41:09,147 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 18:41:09,147 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 18:41:09,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 18:41:09,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 18:41:09,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 18:41:09,501 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 18:41:09,501 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 18:41:09,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_unsafe-10.i [2022-12-11 18:41:10,686 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 18:41:10,961 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 18:41:10,961 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-10.i [2022-12-11 18:41:10,974 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dad2aeac/f626c7ada5184c65b4bc8420945abf38/FLAG9c64c64ee [2022-12-11 18:41:10,989 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dad2aeac/f626c7ada5184c65b4bc8420945abf38 [2022-12-11 18:41:10,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 18:41:10,992 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 18:41:10,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 18:41:10,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 18:41:10,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 18:41:10,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 06:41:10" (1/1) ... [2022-12-11 18:41:10,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68705deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:10, skipping insertion in model container [2022-12-11 18:41:10,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 06:41:10" (1/1) ... [2022-12-11 18:41:11,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 18:41:11,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 18:41:11,306 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/fib_unsafe-10.i[30243,30256] [2022-12-11 18:41:11,317 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:41:11,318 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:41:11,323 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:41:11,323 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:41:11,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:41:11,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:41:11,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:41:11,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:41:11,334 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:41:11,335 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:41:11,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 18:41:11,346 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 18:41:11,392 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/fib_unsafe-10.i[30243,30256] [2022-12-11 18:41:11,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:41:11,394 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:41:11,394 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:41:11,395 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:41:11,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:41:11,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:41:11,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:41:11,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:41:11,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:41:11,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:41:11,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 18:41:11,447 INFO L208 MainTranslator]: Completed translation [2022-12-11 18:41:11,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:11 WrapperNode [2022-12-11 18:41:11,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 18:41:11,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 18:41:11,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 18:41:11,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 18:41:11,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:11" (1/1) ... [2022-12-11 18:41:11,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:11" (1/1) ... [2022-12-11 18:41:11,508 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2022-12-11 18:41:11,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 18:41:11,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 18:41:11,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 18:41:11,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 18:41:11,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:11" (1/1) ... [2022-12-11 18:41:11,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:11" (1/1) ... [2022-12-11 18:41:11,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:11" (1/1) ... [2022-12-11 18:41:11,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:11" (1/1) ... [2022-12-11 18:41:11,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:11" (1/1) ... [2022-12-11 18:41:11,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:11" (1/1) ... [2022-12-11 18:41:11,551 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:11" (1/1) ... [2022-12-11 18:41:11,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:11" (1/1) ... [2022-12-11 18:41:11,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 18:41:11,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 18:41:11,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 18:41:11,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 18:41:11,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:11" (1/1) ... [2022-12-11 18:41:11,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 18:41:11,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:41:11,589 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) [2022-12-11 18:41:11,611 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 [2022-12-11 18:41:11,630 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-11 18:41:11,630 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-11 18:41:11,630 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-11 18:41:11,630 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-11 18:41:11,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 18:41:11,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 18:41:11,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 18:41:11,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 18:41:11,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 18:41:11,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 18:41:11,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 18:41:11,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 18:41:11,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 18:41:11,632 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 18:41:11,780 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 18:41:11,781 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 18:41:11,956 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 18:41:11,962 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 18:41:11,963 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-11 18:41:11,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 06:41:11 BoogieIcfgContainer [2022-12-11 18:41:11,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 18:41:11,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 18:41:11,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 18:41:11,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 18:41:11,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 06:41:10" (1/3) ... [2022-12-11 18:41:11,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44540ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 06:41:11, skipping insertion in model container [2022-12-11 18:41:11,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:41:11" (2/3) ... [2022-12-11 18:41:11,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44540ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 06:41:11, skipping insertion in model container [2022-12-11 18:41:11,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 06:41:11" (3/3) ... [2022-12-11 18:41:11,972 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-10.i [2022-12-11 18:41:11,992 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 18:41:11,992 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 18:41:11,992 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 18:41:12,038 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-11 18:41:12,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 93 transitions, 196 flow [2022-12-11 18:41:12,105 INFO L130 PetriNetUnfolder]: 7/91 cut-off events. [2022-12-11 18:41:12,105 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 18:41:12,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 91 events. 7/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2022-12-11 18:41:12,111 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 93 transitions, 196 flow [2022-12-11 18:41:12,115 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 188 flow [2022-12-11 18:41:12,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 18:41:12,129 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;@42419379, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 18:41:12,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-11 18:41:12,153 INFO L130 PetriNetUnfolder]: 6/81 cut-off events. [2022-12-11 18:41:12,154 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 18:41:12,154 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:41:12,155 INFO L214 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, 1, 1, 1, 1, 1] [2022-12-11 18:41:12,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:41:12,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:41:12,160 INFO L85 PathProgramCache]: Analyzing trace with hash 95801150, now seen corresponding path program 1 times [2022-12-11 18:41:12,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:41:12,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94636501] [2022-12-11 18:41:12,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:41:12,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:41:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:41:12,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:12,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:41:12,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94636501] [2022-12-11 18:41:12,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94636501] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:41:12,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:41:12,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 18:41:12,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967001540] [2022-12-11 18:41:12,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:41:12,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 18:41:12,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:41:12,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 18:41:12,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 18:41:12,519 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 93 [2022-12-11 18:41:12,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2022-12-11 18:41:12,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:41:12,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 93 [2022-12-11 18:41:12,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:41:12,566 INFO L130 PetriNetUnfolder]: 3/92 cut-off events. [2022-12-11 18:41:12,567 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 18:41:12,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 92 events. 3/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 18/106 useless extension candidates. Maximal degree in co-relation 75. Up to 6 conditions per place. [2022-12-11 18:41:12,569 INFO L137 encePairwiseOnDemand]: 86/93 looper letters, 9 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2022-12-11 18:41:12,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 89 transitions, 206 flow [2022-12-11 18:41:12,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 18:41:12,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 18:41:12,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2022-12-11 18:41:12,587 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9283154121863799 [2022-12-11 18:41:12,589 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 188 flow. Second operand 3 states and 259 transitions. [2022-12-11 18:41:12,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 89 transitions, 206 flow [2022-12-11 18:41:12,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 89 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-11 18:41:12,601 INFO L231 Difference]: Finished difference. Result has 91 places, 87 transitions, 188 flow [2022-12-11 18:41:12,603 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=91, PETRI_TRANSITIONS=87} [2022-12-11 18:41:12,609 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 0 predicate places. [2022-12-11 18:41:12,609 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 87 transitions, 188 flow [2022-12-11 18:41:12,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2022-12-11 18:41:12,610 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:41:12,611 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 18:41:12,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 18:41:12,612 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:41:12,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:41:12,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1875915451, now seen corresponding path program 1 times [2022-12-11 18:41:12,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:41:12,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110457728] [2022-12-11 18:41:12,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:41:12,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:41:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:41:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:12,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:41:12,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110457728] [2022-12-11 18:41:12,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110457728] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:41:12,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009141665] [2022-12-11 18:41:12,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:41:12,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:41:12,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:41:12,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:41:12,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 18:41:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:41:12,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-11 18:41:12,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:41:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:13,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:41:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:13,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009141665] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:41:13,118 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:41:13,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-11 18:41:13,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15092341] [2022-12-11 18:41:13,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:41:13,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 18:41:13,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:41:13,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 18:41:13,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-11 18:41:13,131 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 93 [2022-12-11 18:41:13,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 87 transitions, 188 flow. Second operand has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2022-12-11 18:41:13,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:41:13,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 93 [2022-12-11 18:41:13,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:41:13,226 INFO L130 PetriNetUnfolder]: 3/101 cut-off events. [2022-12-11 18:41:13,227 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 18:41:13,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 101 events. 3/101 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 97. Up to 6 conditions per place. [2022-12-11 18:41:13,228 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 10 selfloop transitions, 9 changer transitions 0/95 dead transitions. [2022-12-11 18:41:13,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 95 transitions, 244 flow [2022-12-11 18:41:13,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 18:41:13,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 18:41:13,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 723 transitions. [2022-12-11 18:41:13,232 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8637992831541219 [2022-12-11 18:41:13,232 INFO L175 Difference]: Start difference. First operand has 91 places, 87 transitions, 188 flow. Second operand 9 states and 723 transitions. [2022-12-11 18:41:13,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 95 transitions, 244 flow [2022-12-11 18:41:13,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 95 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 18:41:13,235 INFO L231 Difference]: Finished difference. Result has 101 places, 93 transitions, 236 flow [2022-12-11 18:41:13,235 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=236, PETRI_PLACES=101, PETRI_TRANSITIONS=93} [2022-12-11 18:41:13,235 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 10 predicate places. [2022-12-11 18:41:13,236 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 93 transitions, 236 flow [2022-12-11 18:41:13,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2022-12-11 18:41:13,237 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:41:13,237 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2022-12-11 18:41:13,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-11 18:41:13,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:41:13,442 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:41:13,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:41:13,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1869128357, now seen corresponding path program 2 times [2022-12-11 18:41:13,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:41:13,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194428967] [2022-12-11 18:41:13,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:41:13,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:41:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:41:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:13,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:41:13,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194428967] [2022-12-11 18:41:13,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194428967] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:41:13,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570630809] [2022-12-11 18:41:13,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 18:41:13,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:41:13,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:41:13,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:41:13,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 18:41:13,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 18:41:13,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 18:41:13,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-11 18:41:13,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:41:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:13,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:41:14,009 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:14,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570630809] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:41:14,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:41:14,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-12-11 18:41:14,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219252474] [2022-12-11 18:41:14,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:41:14,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-11 18:41:14,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:41:14,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-11 18:41:14,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-12-11 18:41:14,021 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 93 [2022-12-11 18:41:14,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 93 transitions, 236 flow. Second operand has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 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) [2022-12-11 18:41:14,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:41:14,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 93 [2022-12-11 18:41:14,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:41:14,231 INFO L130 PetriNetUnfolder]: 3/129 cut-off events. [2022-12-11 18:41:14,231 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-11 18:41:14,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 129 events. 3/129 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 4/130 useless extension candidates. Maximal degree in co-relation 186. Up to 11 conditions per place. [2022-12-11 18:41:14,236 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 14 selfloop transitions, 21 changer transitions 0/111 dead transitions. [2022-12-11 18:41:14,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 111 transitions, 402 flow [2022-12-11 18:41:14,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-11 18:41:14,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-11 18:41:14,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1677 transitions. [2022-12-11 18:41:14,242 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.858678955453149 [2022-12-11 18:41:14,242 INFO L175 Difference]: Start difference. First operand has 101 places, 93 transitions, 236 flow. Second operand 21 states and 1677 transitions. [2022-12-11 18:41:14,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 111 transitions, 402 flow [2022-12-11 18:41:14,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 111 transitions, 388 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-11 18:41:14,248 INFO L231 Difference]: Finished difference. Result has 125 places, 106 transitions, 360 flow [2022-12-11 18:41:14,248 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=360, PETRI_PLACES=125, PETRI_TRANSITIONS=106} [2022-12-11 18:41:14,249 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 34 predicate places. [2022-12-11 18:41:14,249 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 106 transitions, 360 flow [2022-12-11 18:41:14,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 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) [2022-12-11 18:41:14,250 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:41:14,250 INFO L214 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1] [2022-12-11 18:41:14,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-11 18:41:14,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-11 18:41:14,456 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:41:14,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:41:14,456 INFO L85 PathProgramCache]: Analyzing trace with hash 526543515, now seen corresponding path program 3 times [2022-12-11 18:41:14,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:41:14,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348299791] [2022-12-11 18:41:14,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:41:14,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:41:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:41:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:14,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:41:14,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348299791] [2022-12-11 18:41:14,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348299791] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:41:14,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323028371] [2022-12-11 18:41:14,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 18:41:14,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:41:14,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:41:14,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:41:14,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 18:41:14,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-12-11 18:41:14,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 18:41:14,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-11 18:41:14,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:41:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:14,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:41:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:15,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323028371] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:41:15,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:41:15,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-12-11 18:41:15,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413696752] [2022-12-11 18:41:15,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:41:15,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-11 18:41:15,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:41:15,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-11 18:41:15,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-12-11 18:41:15,312 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 93 [2022-12-11 18:41:15,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 106 transitions, 360 flow. Second operand has 34 states, 34 states have (on average 80.0) internal successors, (2720), 34 states have internal predecessors, (2720), 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) [2022-12-11 18:41:15,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:41:15,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 93 [2022-12-11 18:41:15,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:41:15,873 INFO L130 PetriNetUnfolder]: 3/185 cut-off events. [2022-12-11 18:41:15,874 INFO L131 PetriNetUnfolder]: For 262/262 co-relation queries the response was YES. [2022-12-11 18:41:15,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 185 events. 3/185 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 8/190 useless extension candidates. Maximal degree in co-relation 399. Up to 27 conditions per place. [2022-12-11 18:41:15,876 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 22 selfloop transitions, 45 changer transitions 0/143 dead transitions. [2022-12-11 18:41:15,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 143 transitions, 782 flow [2022-12-11 18:41:15,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-11 18:41:15,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-11 18:41:15,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3585 transitions. [2022-12-11 18:41:15,884 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8566308243727598 [2022-12-11 18:41:15,884 INFO L175 Difference]: Start difference. First operand has 125 places, 106 transitions, 360 flow. Second operand 45 states and 3585 transitions. [2022-12-11 18:41:15,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 143 transitions, 782 flow [2022-12-11 18:41:15,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 143 transitions, 742 flow, removed 14 selfloop flow, removed 6 redundant places. [2022-12-11 18:41:15,890 INFO L231 Difference]: Finished difference. Result has 172 places, 131 transitions, 638 flow [2022-12-11 18:41:15,890 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=638, PETRI_PLACES=172, PETRI_TRANSITIONS=131} [2022-12-11 18:41:15,891 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 81 predicate places. [2022-12-11 18:41:15,891 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 131 transitions, 638 flow [2022-12-11 18:41:15,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 80.0) internal successors, (2720), 34 states have internal predecessors, (2720), 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) [2022-12-11 18:41:15,893 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:41:15,893 INFO L214 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 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, 1, 1, 1, 1, 1] [2022-12-11 18:41:15,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-11 18:41:16,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:41:16,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:41:16,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:41:16,100 INFO L85 PathProgramCache]: Analyzing trace with hash -578591461, now seen corresponding path program 4 times [2022-12-11 18:41:16,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:41:16,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689456584] [2022-12-11 18:41:16,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:41:16,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:41:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:41:17,017 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:17,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:41:17,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689456584] [2022-12-11 18:41:17,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689456584] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:41:17,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089495936] [2022-12-11 18:41:17,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-11 18:41:17,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:41:17,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:41:17,021 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:41:17,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-11 18:41:17,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-11 18:41:17,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 18:41:17,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-11 18:41:17,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:41:17,330 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:17,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:41:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:17,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089495936] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:41:17,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:41:17,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 47 [2022-12-11 18:41:17,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855097523] [2022-12-11 18:41:17,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:41:17,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-11 18:41:17,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:41:17,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-11 18:41:17,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2022-12-11 18:41:17,924 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 93 [2022-12-11 18:41:17,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 131 transitions, 638 flow. Second operand has 47 states, 47 states have (on average 80.04255319148936) internal successors, (3762), 47 states have internal predecessors, (3762), 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) [2022-12-11 18:41:17,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:41:17,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 93 [2022-12-11 18:41:17,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:41:18,927 INFO L130 PetriNetUnfolder]: 3/234 cut-off events. [2022-12-11 18:41:18,928 INFO L131 PetriNetUnfolder]: For 1114/1114 co-relation queries the response was YES. [2022-12-11 18:41:18,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 234 events. 3/234 cut-off events. For 1114/1114 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 7/238 useless extension candidates. Maximal degree in co-relation 647. Up to 40 conditions per place. [2022-12-11 18:41:18,930 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 29 selfloop transitions, 66 changer transitions 0/171 dead transitions. [2022-12-11 18:41:18,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 171 transitions, 1238 flow [2022-12-11 18:41:18,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-11 18:41:18,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2022-12-11 18:41:18,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 5250 transitions. [2022-12-11 18:41:18,940 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.855327468230694 [2022-12-11 18:41:18,940 INFO L175 Difference]: Start difference. First operand has 172 places, 131 transitions, 638 flow. Second operand 66 states and 5250 transitions. [2022-12-11 18:41:18,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 171 transitions, 1238 flow [2022-12-11 18:41:18,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 171 transitions, 1168 flow, removed 17 selfloop flow, removed 18 redundant places. [2022-12-11 18:41:18,950 INFO L231 Difference]: Finished difference. Result has 227 places, 153 transitions, 948 flow [2022-12-11 18:41:18,950 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=948, PETRI_PLACES=227, PETRI_TRANSITIONS=153} [2022-12-11 18:41:18,953 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 136 predicate places. [2022-12-11 18:41:18,953 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 153 transitions, 948 flow [2022-12-11 18:41:18,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 80.04255319148936) internal successors, (3762), 47 states have internal predecessors, (3762), 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) [2022-12-11 18:41:18,956 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:41:18,956 INFO L214 CegarLoopForPetriNet]: trace histogram [22, 22, 22, 22, 22, 22, 22, 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, 1, 1, 1, 1, 1] [2022-12-11 18:41:18,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-11 18:41:19,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:41:19,162 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 18:41:19,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:41:19,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1940267426, now seen corresponding path program 5 times [2022-12-11 18:41:19,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:41:19,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027514499] [2022-12-11 18:41:19,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:41:19,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:41:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:41:23,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:23,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:41:23,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027514499] [2022-12-11 18:41:23,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027514499] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 18:41:23,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321752441] [2022-12-11 18:41:23,828 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-11 18:41:23,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:41:23,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:41:23,829 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 18:41:23,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-11 18:41:23,951 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-12-11 18:41:23,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 18:41:23,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 75 conjunts are in the unsatisfiable core [2022-12-11 18:41:23,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 18:41:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 1370 proven. 269 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:31,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 18:41:39,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 18:41:39,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321752441] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 18:41:39,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 18:41:39,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 217 [2022-12-11 18:41:39,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232007724] [2022-12-11 18:41:39,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 18:41:39,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 217 states [2022-12-11 18:41:39,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:41:39,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2022-12-11 18:41:39,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2697, Invalid=44175, Unknown=0, NotChecked=0, Total=46872 [2022-12-11 18:41:39,206 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 93 [2022-12-11 18:41:39,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 153 transitions, 948 flow. Second operand has 217 states, 217 states have (on average 62.16129032258065) internal successors, (13489), 217 states have internal predecessors, (13489), 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) [2022-12-11 18:41:39,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:41:39,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 93 [2022-12-11 18:41:39,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-11 18:53:27,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1492 states. [2022-12-11 18:53:27,895 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-11 18:53:27,897 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-11 18:53:27,897 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-11 18:53:27,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-11 18:53:28,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 18:53:28,096 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantifier-free) to 1688 known predicates. [2022-12-11 18:53:28,097 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-11 18:53:28,098 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-11 18:53:28,098 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1] [2022-12-11 18:53:28,101 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 18:53:28,101 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 18:53:28,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 06:53:28 BasicIcfg [2022-12-11 18:53:28,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 18:53:28,106 INFO L158 Benchmark]: Toolchain (without parser) took 737113.24ms. Allocated memory was 197.1MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 172.1MB in the beginning and 4.5GB in the end (delta: -4.3GB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2022-12-11 18:53:28,106 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 197.1MB. Free memory is still 173.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 18:53:28,106 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.30ms. Allocated memory is still 197.1MB. Free memory was 172.1MB in the beginning and 152.2MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-11 18:53:28,106 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.03ms. Allocated memory is still 197.1MB. Free memory was 152.2MB in the beginning and 150.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 18:53:28,107 INFO L158 Benchmark]: Boogie Preprocessor took 43.02ms. Allocated memory is still 197.1MB. Free memory was 150.1MB in the beginning and 148.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-11 18:53:28,107 INFO L158 Benchmark]: RCFGBuilder took 411.06ms. Allocated memory is still 197.1MB. Free memory was 148.5MB in the beginning and 133.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-11 18:53:28,107 INFO L158 Benchmark]: TraceAbstraction took 736137.96ms. Allocated memory was 197.1MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 132.8MB in the beginning and 4.5GB in the end (delta: -4.4GB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2022-12-11 18:53:28,109 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 197.1MB. Free memory is still 173.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 454.30ms. Allocated memory is still 197.1MB. Free memory was 172.1MB in the beginning and 152.2MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 61.03ms. Allocated memory is still 197.1MB. Free memory was 152.2MB in the beginning and 150.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.02ms. Allocated memory is still 197.1MB. Free memory was 150.1MB in the beginning and 148.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 411.06ms. Allocated memory is still 197.1MB. Free memory was 148.5MB in the beginning and 133.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 736137.96ms. Allocated memory was 197.1MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 132.8MB in the beginning and 4.5GB in the end (delta: -4.4GB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 681]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 1688 known predicates. - TimeoutResultAtElement [Line: 720]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 1688 known predicates. - TimeoutResultAtElement [Line: 721]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 1688 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 109 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 736.0s, OverallIterations: 6, TraceHistogramMax: 22, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 710.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8122 SdHoareTripleChecker+Valid, 27.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8122 mSDsluCounter, 1472 SdHoareTripleChecker+Invalid, 23.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1437 mSDsCounter, 21744 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36034 IncrementalHoareTripleChecker+Invalid, 57778 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21744 mSolverCounterUnsat, 35 mSDtfsCounter, 36034 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2872 GetRequests, 974 SyntacticMatches, 23 SemanticMatches, 1874 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1319833 ImplicationChecksByTransitivity, 615.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=948occurred in iteration=5, InterpolantAutomatonStates: 144, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 23.1s InterpolantComputationTime, 1233 NumberOfCodeBlocks, 1233 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 1808 ConstructedInterpolants, 0 QuantifiedInterpolants, 10581 SizeOfPredicates, 124 NumberOfNonLiveVariables, 1281 ConjunctsInSsa, 135 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 1370/7704 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown