/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-atomic/read_write_lock-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 18:55:26,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 18:55:26,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 18:55:26,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 18:55:26,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 18:55:26,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 18:55:26,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 18:55:26,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 18:55:26,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 18:55:26,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 18:55:26,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 18:55:26,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 18:55:26,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 18:55:26,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 18:55:26,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 18:55:26,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 18:55:26,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 18:55:26,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 18:55:26,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 18:55:26,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 18:55:26,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 18:55:26,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 18:55:26,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 18:55:26,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 18:55:26,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 18:55:26,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 18:55:26,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 18:55:26,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 18:55:26,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 18:55:26,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 18:55:26,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 18:55:26,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 18:55:26,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 18:55:26,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 18:55:26,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 18:55:26,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 18:55:26,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 18:55:26,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 18:55:26,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 18:55:26,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 18:55:26,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 18:55:26,604 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 18:55:26,623 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 18:55:26,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 18:55:26,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 18:55:26,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 18:55:26,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 18:55:26,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 18:55:26,626 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 18:55:26,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 18:55:26,626 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 18:55:26,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 18:55:26,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 18:55:26,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 18:55:26,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 18:55:26,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 18:55:26,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 18:55:26,628 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 18:55:26,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 18:55:26,628 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 18:55:26,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 18:55:26,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 18:55:26,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 18:55:26,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 18:55:26,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 18:55:26,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 18:55:26,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 18:55:26,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 18:55:26,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 18:55:26,629 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 18:55:26,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 18:55:26,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 18:55:26,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 18:55:26,629 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 18:55:26,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 18:55:26,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 18:55:26,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 18:55:26,969 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 18:55:26,969 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 18:55:26,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2022-12-11 18:55:27,896 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 18:55:28,155 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 18:55:28,156 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2022-12-11 18:55:28,167 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab85389d/ac7139744c0942af813888ee28f823b0/FLAG85da378a3 [2022-12-11 18:55:28,175 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab85389d/ac7139744c0942af813888ee28f823b0 [2022-12-11 18:55:28,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 18:55:28,178 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 18:55:28,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 18:55:28,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 18:55:28,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 18:55:28,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 06:55:28" (1/1) ... [2022-12-11 18:55:28,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f58a77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:28, skipping insertion in model container [2022-12-11 18:55:28,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 06:55:28" (1/1) ... [2022-12-11 18:55:28,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 18:55:28,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 18:55:28,316 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-11 18:55:28,424 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:55:28,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:55:28,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:55:28,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:55:28,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:55:28,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:55:28,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:55:28,428 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:55:28,428 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:55:28,428 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:55:28,429 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-atomic/read_write_lock-1.i[31246,31259] [2022-12-11 18:55:28,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 18:55:28,449 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 18:55:28,467 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-11 18:55:28,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:55:28,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:55:28,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:55:28,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:55:28,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:55:28,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:55:28,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:55:28,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:55:28,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 18:55:28,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 18:55:28,486 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-atomic/read_write_lock-1.i[31246,31259] [2022-12-11 18:55:28,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 18:55:28,535 INFO L208 MainTranslator]: Completed translation [2022-12-11 18:55:28,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:28 WrapperNode [2022-12-11 18:55:28,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 18:55:28,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 18:55:28,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 18:55:28,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 18:55:28,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:28" (1/1) ... [2022-12-11 18:55:28,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:28" (1/1) ... [2022-12-11 18:55:28,590 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 114 [2022-12-11 18:55:28,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 18:55:28,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 18:55:28,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 18:55:28,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 18:55:28,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:28" (1/1) ... [2022-12-11 18:55:28,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:28" (1/1) ... [2022-12-11 18:55:28,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:28" (1/1) ... [2022-12-11 18:55:28,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:28" (1/1) ... [2022-12-11 18:55:28,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:28" (1/1) ... [2022-12-11 18:55:28,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:28" (1/1) ... [2022-12-11 18:55:28,620 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:28" (1/1) ... [2022-12-11 18:55:28,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:28" (1/1) ... [2022-12-11 18:55:28,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 18:55:28,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 18:55:28,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 18:55:28,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 18:55:28,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:28" (1/1) ... [2022-12-11 18:55:28,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 18:55:28,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 18:55:28,679 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 18:55:28,695 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 18:55:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 18:55:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 18:55:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 18:55:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 18:55:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-12-11 18:55:28,706 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-12-11 18:55:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 18:55:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 18:55:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 18:55:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 18:55:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 18:55:28,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 18:55:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-12-11 18:55:28,707 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-12-11 18:55:28,708 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 18:55:28,794 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 18:55:28,795 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 18:55:28,921 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 18:55:28,943 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 18:55:28,943 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-11 18:55:28,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 06:55:28 BoogieIcfgContainer [2022-12-11 18:55:28,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 18:55:28,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 18:55:28,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 18:55:28,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 18:55:28,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 06:55:28" (1/3) ... [2022-12-11 18:55:28,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a7c421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 06:55:28, skipping insertion in model container [2022-12-11 18:55:28,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 06:55:28" (2/3) ... [2022-12-11 18:55:28,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a7c421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 06:55:28, skipping insertion in model container [2022-12-11 18:55:28,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 06:55:28" (3/3) ... [2022-12-11 18:55:28,963 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2022-12-11 18:55:28,975 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 18:55:28,975 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 18:55:28,975 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 18:55:29,021 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-11 18:55:29,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 108 transitions, 248 flow [2022-12-11 18:55:29,089 INFO L130 PetriNetUnfolder]: 2/104 cut-off events. [2022-12-11 18:55:29,090 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-11 18:55:29,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 104 events. 2/104 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2022-12-11 18:55:29,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 108 transitions, 248 flow [2022-12-11 18:55:29,101 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 91 transitions, 203 flow [2022-12-11 18:55:29,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 18:55:29,121 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;@76dbcf7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 18:55:29,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-11 18:55:29,149 INFO L130 PetriNetUnfolder]: 1/55 cut-off events. [2022-12-11 18:55:29,149 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 18:55:29,149 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:29,150 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] [2022-12-11 18:55:29,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:55:29,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:29,156 INFO L85 PathProgramCache]: Analyzing trace with hash 573228764, now seen corresponding path program 1 times [2022-12-11 18:55:29,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:29,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237246319] [2022-12-11 18:55:29,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:29,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:29,398 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 18:55:29,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:29,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237246319] [2022-12-11 18:55:29,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237246319] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:55:29,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:55:29,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 18:55:29,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696882809] [2022-12-11 18:55:29,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:55:29,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 18:55:29,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:29,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 18:55:29,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-11 18:55:29,444 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-12-11 18:55:29,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 91 transitions, 203 flow. Second operand has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 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 18:55:29,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:29,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-12-11 18:55:29,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:30,448 INFO L130 PetriNetUnfolder]: 3826/7930 cut-off events. [2022-12-11 18:55:30,448 INFO L131 PetriNetUnfolder]: For 1855/1855 co-relation queries the response was YES. [2022-12-11 18:55:30,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14580 conditions, 7930 events. 3826/7930 cut-off events. For 1855/1855 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 70408 event pairs, 1153 based on Foata normal form. 418/7992 useless extension candidates. Maximal degree in co-relation 13857. Up to 2013 conditions per place. [2022-12-11 18:55:30,491 INFO L137 encePairwiseOnDemand]: 97/108 looper letters, 109 selfloop transitions, 24 changer transitions 4/198 dead transitions. [2022-12-11 18:55:30,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 198 transitions, 763 flow [2022-12-11 18:55:30,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 18:55:30,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 18:55:30,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 921 transitions. [2022-12-11 18:55:30,505 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8527777777777777 [2022-12-11 18:55:30,506 INFO L175 Difference]: Start difference. First operand has 102 places, 91 transitions, 203 flow. Second operand 10 states and 921 transitions. [2022-12-11 18:55:30,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 198 transitions, 763 flow [2022-12-11 18:55:30,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 198 transitions, 707 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-11 18:55:30,522 INFO L231 Difference]: Finished difference. Result has 112 places, 114 transitions, 361 flow [2022-12-11 18:55:30,523 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=361, PETRI_PLACES=112, PETRI_TRANSITIONS=114} [2022-12-11 18:55:30,527 INFO L295 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2022-12-11 18:55:30,528 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 114 transitions, 361 flow [2022-12-11 18:55:30,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 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 18:55:30,528 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:30,528 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] [2022-12-11 18:55:30,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 18:55:30,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:55:30,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:30,531 INFO L85 PathProgramCache]: Analyzing trace with hash 863878095, now seen corresponding path program 1 times [2022-12-11 18:55:30,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:30,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045235180] [2022-12-11 18:55:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:30,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:30,670 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 18:55:30,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:30,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045235180] [2022-12-11 18:55:30,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045235180] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:55:30,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:55:30,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 18:55:30,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127212689] [2022-12-11 18:55:30,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:55:30,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 18:55:30,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:30,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 18:55:30,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 18:55:30,673 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 108 [2022-12-11 18:55:30,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 114 transitions, 361 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 18:55:30,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:30,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 108 [2022-12-11 18:55:30,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:30,881 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([241] L739-2-->L740: Formula: (= (+ v_~r~0_7 1) v_~r~0_8) InVars {~r~0=v_~r~0_8} OutVars{~r~0=v_~r~0_7} AuxVars[] AssignedVars[~r~0][59], [60#L748-4true, 111#$Ultimate##0true, 148#true, Black: 124#(= ~x~0 |readerThread1of1ForFork3_~l~0#1|), Black: 122#true, Black: 137#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 131#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 135#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 133#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), 40#L740true, Black: 129#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), readerThread1of1ForFork2InUse, 74#L740true, 21#L721true, 127#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|)]) [2022-12-11 18:55:30,881 INFO L382 tUnfolder$Statistics]: this new event has 61 ancestors and is cut-off event [2022-12-11 18:55:30,881 INFO L385 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-12-11 18:55:30,881 INFO L385 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-12-11 18:55:30,881 INFO L385 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-12-11 18:55:30,901 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([241] L739-2-->L740: Formula: (= (+ v_~r~0_7 1) v_~r~0_8) InVars {~r~0=v_~r~0_8} OutVars{~r~0=v_~r~0_7} AuxVars[] AssignedVars[~r~0][60], [60#L748-4true, Black: 124#(= ~x~0 |readerThread1of1ForFork3_~l~0#1|), Black: 122#true, 87#L717-1true, Black: 137#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 131#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), 150#(= ~w~0 1), Black: 135#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 133#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), 40#L740true, Black: 129#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), readerThread1of1ForFork2InUse, 74#L740true, 21#L721true, 127#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|)]) [2022-12-11 18:55:30,901 INFO L382 tUnfolder$Statistics]: this new event has 63 ancestors and is cut-off event [2022-12-11 18:55:30,901 INFO L385 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-12-11 18:55:30,901 INFO L385 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-12-11 18:55:30,901 INFO L385 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-12-11 18:55:30,916 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([241] L739-2-->L740: Formula: (= (+ v_~r~0_7 1) v_~r~0_8) InVars {~r~0=v_~r~0_8} OutVars{~r~0=v_~r~0_7} AuxVars[] AssignedVars[~r~0][59], [60#L748-4true, 148#true, Black: 124#(= ~x~0 |readerThread1of1ForFork3_~l~0#1|), Black: 122#true, Black: 137#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 131#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 135#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 133#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), 40#L740true, Black: 129#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), 112#L721true, 74#L740true, readerThread1of1ForFork2InUse, 21#L721true, 127#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|)]) [2022-12-11 18:55:30,917 INFO L382 tUnfolder$Statistics]: this new event has 65 ancestors and is cut-off event [2022-12-11 18:55:30,917 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-11 18:55:30,917 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-11 18:55:30,917 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-11 18:55:30,951 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([241] L739-2-->L740: Formula: (= (+ v_~r~0_7 1) v_~r~0_8) InVars {~r~0=v_~r~0_8} OutVars{~r~0=v_~r~0_7} AuxVars[] AssignedVars[~r~0][59], [148#true, Black: 124#(= ~x~0 |readerThread1of1ForFork3_~l~0#1|), Black: 122#true, Black: 137#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 131#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 135#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 133#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), 40#L740true, Black: 129#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), 74#L740true, readerThread1of1ForFork2InUse, 21#L721true, 103#L749-2true, 127#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|)]) [2022-12-11 18:55:30,951 INFO L382 tUnfolder$Statistics]: this new event has 71 ancestors and is cut-off event [2022-12-11 18:55:30,952 INFO L385 tUnfolder$Statistics]: existing Event has 71 ancestors and is cut-off event [2022-12-11 18:55:30,952 INFO L385 tUnfolder$Statistics]: existing Event has 71 ancestors and is cut-off event [2022-12-11 18:55:30,952 INFO L385 tUnfolder$Statistics]: existing Event has 71 ancestors and is cut-off event [2022-12-11 18:55:30,964 INFO L130 PetriNetUnfolder]: 890/2856 cut-off events. [2022-12-11 18:55:30,964 INFO L131 PetriNetUnfolder]: For 676/687 co-relation queries the response was YES. [2022-12-11 18:55:30,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5460 conditions, 2856 events. 890/2856 cut-off events. For 676/687 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 26213 event pairs, 295 based on Foata normal form. 124/2855 useless extension candidates. Maximal degree in co-relation 4837. Up to 649 conditions per place. [2022-12-11 18:55:30,990 INFO L137 encePairwiseOnDemand]: 102/108 looper letters, 19 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2022-12-11 18:55:30,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 121 transitions, 427 flow [2022-12-11 18:55:30,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 18:55:30,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 18:55:30,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2022-12-11 18:55:30,992 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9074074074074074 [2022-12-11 18:55:30,992 INFO L175 Difference]: Start difference. First operand has 112 places, 114 transitions, 361 flow. Second operand 3 states and 294 transitions. [2022-12-11 18:55:30,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 121 transitions, 427 flow [2022-12-11 18:55:31,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 121 transitions, 427 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-11 18:55:31,004 INFO L231 Difference]: Finished difference. Result has 115 places, 114 transitions, 377 flow [2022-12-11 18:55:31,004 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=115, PETRI_TRANSITIONS=114} [2022-12-11 18:55:31,005 INFO L295 CegarLoopForPetriNet]: 102 programPoint places, 13 predicate places. [2022-12-11 18:55:31,005 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 114 transitions, 377 flow [2022-12-11 18:55:31,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 18:55:31,005 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:31,005 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] [2022-12-11 18:55:31,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 18:55:31,006 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:55:31,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:31,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1630665507, now seen corresponding path program 2 times [2022-12-11 18:55:31,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:31,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754975720] [2022-12-11 18:55:31,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:31,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:31,176 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 18:55:31,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:31,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754975720] [2022-12-11 18:55:31,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754975720] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:55:31,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:55:31,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 18:55:31,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832017531] [2022-12-11 18:55:31,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:55:31,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 18:55:31,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:31,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 18:55:31,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 18:55:31,180 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 108 [2022-12-11 18:55:31,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 114 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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 18:55:31,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:31,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 108 [2022-12-11 18:55:31,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:31,433 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([253] L719-->L721: Formula: (= v_~w~0_5 0) InVars {} OutVars{~w~0=v_~w~0_5} AuxVars[] AssignedVars[~w~0][130], [60#L748-4true, 148#true, 152#true, Black: 124#(= ~x~0 |readerThread1of1ForFork3_~l~0#1|), Black: 122#true, Black: 137#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 131#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 135#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 133#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), 40#L740true, Black: 129#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), 112#L721true, readerThread1of1ForFork2InUse, 74#L740true, Black: 150#(= ~w~0 1), 21#L721true, 127#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|)]) [2022-12-11 18:55:31,433 INFO L382 tUnfolder$Statistics]: this new event has 65 ancestors and is cut-off event [2022-12-11 18:55:31,433 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-11 18:55:31,434 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-11 18:55:31,434 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-11 18:55:31,504 INFO L130 PetriNetUnfolder]: 775/3364 cut-off events. [2022-12-11 18:55:31,505 INFO L131 PetriNetUnfolder]: For 1505/1561 co-relation queries the response was YES. [2022-12-11 18:55:31,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6571 conditions, 3364 events. 775/3364 cut-off events. For 1505/1561 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 35921 event pairs, 85 based on Foata normal form. 65/3300 useless extension candidates. Maximal degree in co-relation 6119. Up to 520 conditions per place. [2022-12-11 18:55:31,529 INFO L137 encePairwiseOnDemand]: 99/108 looper letters, 27 selfloop transitions, 19 changer transitions 2/145 dead transitions. [2022-12-11 18:55:31,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 145 transitions, 579 flow [2022-12-11 18:55:31,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 18:55:31,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 18:55:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 490 transitions. [2022-12-11 18:55:31,531 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9074074074074074 [2022-12-11 18:55:31,531 INFO L175 Difference]: Start difference. First operand has 115 places, 114 transitions, 377 flow. Second operand 5 states and 490 transitions. [2022-12-11 18:55:31,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 145 transitions, 579 flow [2022-12-11 18:55:31,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 145 transitions, 559 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-11 18:55:31,541 INFO L231 Difference]: Finished difference. Result has 117 places, 128 transitions, 455 flow [2022-12-11 18:55:31,541 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=455, PETRI_PLACES=117, PETRI_TRANSITIONS=128} [2022-12-11 18:55:31,541 INFO L295 CegarLoopForPetriNet]: 102 programPoint places, 15 predicate places. [2022-12-11 18:55:31,542 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 128 transitions, 455 flow [2022-12-11 18:55:31,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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 18:55:31,542 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:31,542 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] [2022-12-11 18:55:31,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 18:55:31,542 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:55:31,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:31,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1167838467, now seen corresponding path program 1 times [2022-12-11 18:55:31,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:31,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581105169] [2022-12-11 18:55:31,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:31,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:31,615 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 18:55:31,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:31,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581105169] [2022-12-11 18:55:31,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581105169] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:55:31,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:55:31,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 18:55:31,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469760352] [2022-12-11 18:55:31,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:55:31,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 18:55:31,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:31,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 18:55:31,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-11 18:55:31,621 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-12-11 18:55:31,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 128 transitions, 455 flow. Second operand has 6 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 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 18:55:31,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:31,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-12-11 18:55:31,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:33,100 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([241] L739-2-->L740: Formula: (= (+ v_~r~0_7 1) v_~r~0_8) InVars {~r~0=v_~r~0_8} OutVars{~r~0=v_~r~0_7} AuxVars[] AssignedVars[~r~0][352], [60#L748-4true, 152#true, Black: 124#(= ~x~0 |readerThread1of1ForFork3_~l~0#1|), Black: 122#true, Black: 137#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 131#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 135#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), 40#L740true, Black: 133#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), 112#L721true, Black: 129#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), 74#L740true, readerThread1of1ForFork2InUse, Black: 150#(= ~w~0 1), 21#L721true, 127#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 163#(= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)]) [2022-12-11 18:55:33,101 INFO L382 tUnfolder$Statistics]: this new event has 65 ancestors and is cut-off event [2022-12-11 18:55:33,101 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-11 18:55:33,101 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-11 18:55:33,101 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-11 18:55:33,434 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([241] L739-2-->L740: Formula: (= (+ v_~r~0_7 1) v_~r~0_8) InVars {~r~0=v_~r~0_8} OutVars{~r~0=v_~r~0_7} AuxVars[] AssignedVars[~r~0][352], [Black: 124#(= ~x~0 |readerThread1of1ForFork3_~l~0#1|), 152#true, Black: 122#true, Black: 137#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 131#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 135#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), 40#L740true, Black: 133#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 129#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), 74#L740true, readerThread1of1ForFork2InUse, Black: 150#(= ~w~0 1), 21#L721true, 103#L749-2true, 127#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 163#(= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)]) [2022-12-11 18:55:33,434 INFO L382 tUnfolder$Statistics]: this new event has 71 ancestors and is cut-off event [2022-12-11 18:55:33,434 INFO L385 tUnfolder$Statistics]: existing Event has 71 ancestors and is cut-off event [2022-12-11 18:55:33,434 INFO L385 tUnfolder$Statistics]: existing Event has 71 ancestors and is cut-off event [2022-12-11 18:55:33,434 INFO L385 tUnfolder$Statistics]: existing Event has 71 ancestors and is cut-off event [2022-12-11 18:55:33,696 INFO L130 PetriNetUnfolder]: 8503/19145 cut-off events. [2022-12-11 18:55:33,696 INFO L131 PetriNetUnfolder]: For 16785/16832 co-relation queries the response was YES. [2022-12-11 18:55:33,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47523 conditions, 19145 events. 8503/19145 cut-off events. For 16785/16832 co-relation queries the response was YES. Maximal size of possible extension queue 1820. Compared 217600 event pairs, 1734 based on Foata normal form. 13/18569 useless extension candidates. Maximal degree in co-relation 46936. Up to 4078 conditions per place. [2022-12-11 18:55:33,797 INFO L137 encePairwiseOnDemand]: 99/108 looper letters, 193 selfloop transitions, 94 changer transitions 32/384 dead transitions. [2022-12-11 18:55:33,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 384 transitions, 2309 flow [2022-12-11 18:55:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 18:55:33,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 18:55:33,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 910 transitions. [2022-12-11 18:55:33,800 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8425925925925926 [2022-12-11 18:55:33,800 INFO L175 Difference]: Start difference. First operand has 117 places, 128 transitions, 455 flow. Second operand 10 states and 910 transitions. [2022-12-11 18:55:33,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 384 transitions, 2309 flow [2022-12-11 18:55:33,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 384 transitions, 2303 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-11 18:55:33,906 INFO L231 Difference]: Finished difference. Result has 134 places, 237 transitions, 1478 flow [2022-12-11 18:55:33,907 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1478, PETRI_PLACES=134, PETRI_TRANSITIONS=237} [2022-12-11 18:55:33,907 INFO L295 CegarLoopForPetriNet]: 102 programPoint places, 32 predicate places. [2022-12-11 18:55:33,907 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 237 transitions, 1478 flow [2022-12-11 18:55:33,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 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 18:55:33,908 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:33,908 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] [2022-12-11 18:55:33,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 18:55:33,908 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:55:33,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:33,909 INFO L85 PathProgramCache]: Analyzing trace with hash 320982321, now seen corresponding path program 1 times [2022-12-11 18:55:33,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:33,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076829285] [2022-12-11 18:55:33,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:33,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:33,964 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 18:55:33,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:33,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076829285] [2022-12-11 18:55:33,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076829285] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:55:33,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:55:33,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 18:55:33,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206761301] [2022-12-11 18:55:33,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:55:33,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 18:55:33,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:33,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 18:55:33,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-11 18:55:33,966 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-12-11 18:55:33,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 237 transitions, 1478 flow. Second operand has 6 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 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 18:55:33,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:33,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-12-11 18:55:33,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:35,582 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([227] L739-2-->L740: Formula: (= (+ v_~r~0_7 1) v_~r~0_8) InVars {~r~0=v_~r~0_8} OutVars{~r~0=v_~r~0_7} AuxVars[] AssignedVars[~r~0][397], [60#L748-4true, 189#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 152#true, Black: 124#(= ~x~0 |readerThread1of1ForFork3_~l~0#1|), Black: 122#true, Black: 137#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 131#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 135#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 133#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 129#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 150#(= ~w~0 1), 21#L721true, Black: 171#(and (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), 40#L740true, Black: 165#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), 112#L721true, Black: 160#(= |readerThread1of1ForFork2_~l~0#1| ~x~0), Black: 169#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0) (= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)), Black: 173#(and (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0) (= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)), 74#L740true, readerThread1of1ForFork2InUse, Black: 167#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 158#true, 127#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 163#(= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)]) [2022-12-11 18:55:35,582 INFO L382 tUnfolder$Statistics]: this new event has 65 ancestors and is cut-off event [2022-12-11 18:55:35,582 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-11 18:55:35,582 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-11 18:55:35,582 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-11 18:55:35,977 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([227] L739-2-->L740: Formula: (= (+ v_~r~0_7 1) v_~r~0_8) InVars {~r~0=v_~r~0_8} OutVars{~r~0=v_~r~0_7} AuxVars[] AssignedVars[~r~0][397], [189#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 152#true, Black: 124#(= ~x~0 |readerThread1of1ForFork3_~l~0#1|), Black: 122#true, Black: 137#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 131#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 135#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 171#(and (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), 40#L740true, Black: 165#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 133#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 129#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 160#(= |readerThread1of1ForFork2_~l~0#1| ~x~0), Black: 169#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0) (= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)), Black: 173#(and (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0) (= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)), 74#L740true, readerThread1of1ForFork2InUse, Black: 167#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 158#true, Black: 150#(= ~w~0 1), 21#L721true, 103#L749-2true, 127#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 163#(= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)]) [2022-12-11 18:55:35,977 INFO L382 tUnfolder$Statistics]: this new event has 71 ancestors and is cut-off event [2022-12-11 18:55:35,977 INFO L385 tUnfolder$Statistics]: existing Event has 71 ancestors and is cut-off event [2022-12-11 18:55:35,977 INFO L385 tUnfolder$Statistics]: existing Event has 71 ancestors and is cut-off event [2022-12-11 18:55:35,977 INFO L385 tUnfolder$Statistics]: existing Event has 71 ancestors and is cut-off event [2022-12-11 18:55:36,062 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([227] L739-2-->L740: Formula: (= (+ v_~r~0_7 1) v_~r~0_8) InVars {~r~0=v_~r~0_8} OutVars{~r~0=v_~r~0_7} AuxVars[] AssignedVars[~r~0][397], [189#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 47#L750-2true, 152#true, Black: 124#(= ~x~0 |readerThread1of1ForFork3_~l~0#1|), Black: 122#true, Black: 137#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 131#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 135#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 171#(and (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), 40#L740true, Black: 165#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 133#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 129#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 160#(= |readerThread1of1ForFork2_~l~0#1| ~x~0), Black: 169#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0) (= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)), Black: 173#(and (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0) (= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)), readerThread1of1ForFork2InUse, Black: 167#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 158#true, Black: 150#(= ~w~0 1), 21#L721true, 127#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 163#(= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)]) [2022-12-11 18:55:36,062 INFO L382 tUnfolder$Statistics]: this new event has 76 ancestors and is cut-off event [2022-12-11 18:55:36,063 INFO L385 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-12-11 18:55:36,063 INFO L385 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-12-11 18:55:36,063 INFO L385 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-12-11 18:55:36,093 INFO L130 PetriNetUnfolder]: 8574/19929 cut-off events. [2022-12-11 18:55:36,093 INFO L131 PetriNetUnfolder]: For 32519/32566 co-relation queries the response was YES. [2022-12-11 18:55:36,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59390 conditions, 19929 events. 8574/19929 cut-off events. For 32519/32566 co-relation queries the response was YES. Maximal size of possible extension queue 1948. Compared 231072 event pairs, 1383 based on Foata normal form. 192/19929 useless extension candidates. Maximal degree in co-relation 58742. Up to 3646 conditions per place. [2022-12-11 18:55:36,243 INFO L137 encePairwiseOnDemand]: 99/108 looper letters, 187 selfloop transitions, 131 changer transitions 43/426 dead transitions. [2022-12-11 18:55:36,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 426 transitions, 3369 flow [2022-12-11 18:55:36,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 18:55:36,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 18:55:36,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 813 transitions. [2022-12-11 18:55:36,246 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8364197530864198 [2022-12-11 18:55:36,246 INFO L175 Difference]: Start difference. First operand has 134 places, 237 transitions, 1478 flow. Second operand 9 states and 813 transitions. [2022-12-11 18:55:36,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 426 transitions, 3369 flow [2022-12-11 18:55:36,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 426 transitions, 3369 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-11 18:55:36,522 INFO L231 Difference]: Finished difference. Result has 147 places, 279 transitions, 2287 flow [2022-12-11 18:55:36,522 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2287, PETRI_PLACES=147, PETRI_TRANSITIONS=279} [2022-12-11 18:55:36,524 INFO L295 CegarLoopForPetriNet]: 102 programPoint places, 45 predicate places. [2022-12-11 18:55:36,524 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 279 transitions, 2287 flow [2022-12-11 18:55:36,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 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 18:55:36,525 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:36,525 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] [2022-12-11 18:55:36,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 18:55:36,525 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:55:36,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:36,527 INFO L85 PathProgramCache]: Analyzing trace with hash 691073903, now seen corresponding path program 1 times [2022-12-11 18:55:36,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:36,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627409875] [2022-12-11 18:55:36,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:36,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:36,618 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 18:55:36,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:36,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627409875] [2022-12-11 18:55:36,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627409875] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:55:36,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:55:36,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 18:55:36,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152059290] [2022-12-11 18:55:36,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:55:36,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 18:55:36,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:36,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 18:55:36,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-11 18:55:36,688 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-12-11 18:55:36,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 279 transitions, 2287 flow. Second operand has 6 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 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 18:55:36,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:36,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-12-11 18:55:36,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:38,336 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([241] L739-2-->L740: Formula: (= (+ v_~r~0_7 1) v_~r~0_8) InVars {~r~0=v_~r~0_8} OutVars{~r~0=v_~r~0_7} AuxVars[] AssignedVars[~r~0][397], [60#L748-4true, 189#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), Black: 194#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 191#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 198#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 124#(= ~x~0 |readerThread1of1ForFork3_~l~0#1|), Black: 122#true, Black: 184#true, 155#(or (not (= ~w~0 0)) (not (= ~r~0 0))), Black: 137#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 131#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 135#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), 211#(= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|), Black: 133#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 129#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 150#(= ~w~0 1), 21#L721true, Black: 171#(and (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 165#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 160#(= |readerThread1of1ForFork2_~l~0#1| ~x~0), 112#L721true, Black: 169#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0) (= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)), Black: 173#(and (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0) (= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)), readerThread1of1ForFork2InUse, 74#L740true, Black: 167#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 158#true, 12#L739-2true, 127#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 163#(= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)]) [2022-12-11 18:55:38,336 INFO L382 tUnfolder$Statistics]: this new event has 64 ancestors and is cut-off event [2022-12-11 18:55:38,336 INFO L385 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-12-11 18:55:38,336 INFO L385 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-12-11 18:55:38,336 INFO L385 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-12-11 18:55:38,891 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([241] L739-2-->L740: Formula: (= (+ v_~r~0_7 1) v_~r~0_8) InVars {~r~0=v_~r~0_8} OutVars{~r~0=v_~r~0_7} AuxVars[] AssignedVars[~r~0][397], [189#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), Black: 194#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 191#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 198#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 124#(= ~x~0 |readerThread1of1ForFork3_~l~0#1|), 155#(or (not (= ~w~0 0)) (not (= ~r~0 0))), Black: 184#true, Black: 122#true, Black: 137#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 131#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), 211#(= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|), Black: 135#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 133#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 129#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 150#(= ~w~0 1), 21#L721true, 103#L749-2true, Black: 171#(and (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 165#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 160#(= |readerThread1of1ForFork2_~l~0#1| ~x~0), Black: 169#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0) (= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)), 74#L740true, Black: 173#(and (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0) (= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)), readerThread1of1ForFork2InUse, Black: 167#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 158#true, 12#L739-2true, 127#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 163#(= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)]) [2022-12-11 18:55:38,891 INFO L382 tUnfolder$Statistics]: this new event has 70 ancestors and is cut-off event [2022-12-11 18:55:38,891 INFO L385 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-12-11 18:55:38,892 INFO L385 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-12-11 18:55:38,892 INFO L385 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-12-11 18:55:38,918 INFO L380 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([241] L739-2-->L740: Formula: (= (+ v_~r~0_7 1) v_~r~0_8) InVars {~r~0=v_~r~0_8} OutVars{~r~0=v_~r~0_7} AuxVars[] AssignedVars[~r~0][397], [189#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), Black: 194#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 191#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 198#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 124#(= ~x~0 |readerThread1of1ForFork3_~l~0#1|), 155#(or (not (= ~w~0 0)) (not (= ~r~0 0))), Black: 184#true, Black: 122#true, Black: 137#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 131#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 135#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), 211#(= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|), Black: 133#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 129#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 150#(= ~w~0 1), 21#L721true, 103#L749-2true, Black: 171#(and (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 165#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 160#(= |readerThread1of1ForFork2_~l~0#1| ~x~0), Black: 169#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0) (= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)), 74#L740true, Black: 173#(and (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0) (= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)), readerThread1of1ForFork2InUse, Black: 167#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork2_~ly~0#1|) (= |readerThread1of1ForFork2_~l~0#1| ~x~0)), Black: 158#true, 12#L739-2true, 127#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 163#(= |readerThread1of1ForFork2_~lx~0#1| |readerThread1of1ForFork2_~ly~0#1|)]) [2022-12-11 18:55:38,918 INFO L382 tUnfolder$Statistics]: this new event has 70 ancestors and is cut-off event [2022-12-11 18:55:38,918 INFO L385 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-12-11 18:55:38,918 INFO L385 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-12-11 18:55:38,918 INFO L385 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-12-11 18:55:38,918 INFO L385 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-12-11 18:55:39,118 INFO L130 PetriNetUnfolder]: 9016/21338 cut-off events. [2022-12-11 18:55:39,118 INFO L131 PetriNetUnfolder]: For 49033/49090 co-relation queries the response was YES. [2022-12-11 18:55:39,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66813 conditions, 21338 events. 9016/21338 cut-off events. For 49033/49090 co-relation queries the response was YES. Maximal size of possible extension queue 2129. Compared 254835 event pairs, 1763 based on Foata normal form. 234/21358 useless extension candidates. Maximal degree in co-relation 60113. Up to 4399 conditions per place. [2022-12-11 18:55:39,268 INFO L137 encePairwiseOnDemand]: 99/108 looper letters, 219 selfloop transitions, 163 changer transitions 29/483 dead transitions. [2022-12-11 18:55:39,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 483 transitions, 4491 flow [2022-12-11 18:55:39,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 18:55:39,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 18:55:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 823 transitions. [2022-12-11 18:55:39,270 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8467078189300411 [2022-12-11 18:55:39,270 INFO L175 Difference]: Start difference. First operand has 147 places, 279 transitions, 2287 flow. Second operand 9 states and 823 transitions. [2022-12-11 18:55:39,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 483 transitions, 4491 flow [2022-12-11 18:55:39,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 483 transitions, 4463 flow, removed 14 selfloop flow, removed 0 redundant places. [2022-12-11 18:55:39,588 INFO L231 Difference]: Finished difference. Result has 160 places, 340 transitions, 3462 flow [2022-12-11 18:55:39,588 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3462, PETRI_PLACES=160, PETRI_TRANSITIONS=340} [2022-12-11 18:55:39,588 INFO L295 CegarLoopForPetriNet]: 102 programPoint places, 58 predicate places. [2022-12-11 18:55:39,589 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 340 transitions, 3462 flow [2022-12-11 18:55:39,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 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 18:55:39,589 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:39,589 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] [2022-12-11 18:55:39,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 18:55:39,589 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:55:39,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:39,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1396800305, now seen corresponding path program 1 times [2022-12-11 18:55:39,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:39,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476918663] [2022-12-11 18:55:39,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:39,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:39,814 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 18:55:39,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:39,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476918663] [2022-12-11 18:55:39,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476918663] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:55:39,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:55:39,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 18:55:39,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478222125] [2022-12-11 18:55:39,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:55:39,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 18:55:39,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:39,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 18:55:39,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-11 18:55:39,816 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 108 [2022-12-11 18:55:39,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 340 transitions, 3462 flow. Second operand has 5 states, 5 states have (on average 92.6) internal successors, (463), 5 states have internal predecessors, (463), 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 18:55:39,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:39,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 108 [2022-12-11 18:55:39,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:40,069 INFO L130 PetriNetUnfolder]: 383/2305 cut-off events. [2022-12-11 18:55:40,069 INFO L131 PetriNetUnfolder]: For 4038/4212 co-relation queries the response was YES. [2022-12-11 18:55:40,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6350 conditions, 2305 events. 383/2305 cut-off events. For 4038/4212 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 23425 event pairs, 52 based on Foata normal form. 127/2407 useless extension candidates. Maximal degree in co-relation 6098. Up to 289 conditions per place. [2022-12-11 18:55:40,083 INFO L137 encePairwiseOnDemand]: 101/108 looper letters, 18 selfloop transitions, 9 changer transitions 35/187 dead transitions. [2022-12-11 18:55:40,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 187 transitions, 1290 flow [2022-12-11 18:55:40,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 18:55:40,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 18:55:40,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 496 transitions. [2022-12-11 18:55:40,085 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9185185185185185 [2022-12-11 18:55:40,085 INFO L175 Difference]: Start difference. First operand has 160 places, 340 transitions, 3462 flow. Second operand 5 states and 496 transitions. [2022-12-11 18:55:40,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 187 transitions, 1290 flow [2022-12-11 18:55:40,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 187 transitions, 1221 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-12-11 18:55:40,105 INFO L231 Difference]: Finished difference. Result has 160 places, 145 transitions, 871 flow [2022-12-11 18:55:40,106 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=871, PETRI_PLACES=160, PETRI_TRANSITIONS=145} [2022-12-11 18:55:40,106 INFO L295 CegarLoopForPetriNet]: 102 programPoint places, 58 predicate places. [2022-12-11 18:55:40,106 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 145 transitions, 871 flow [2022-12-11 18:55:40,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.6) internal successors, (463), 5 states have internal predecessors, (463), 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 18:55:40,106 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 18:55:40,107 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, 1, 1] [2022-12-11 18:55:40,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 18:55:40,107 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-11 18:55:40,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 18:55:40,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1167966192, now seen corresponding path program 1 times [2022-12-11 18:55:40,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 18:55:40,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857134552] [2022-12-11 18:55:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 18:55:40,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 18:55:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 18:55:40,187 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 18:55:40,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 18:55:40,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857134552] [2022-12-11 18:55:40,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857134552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 18:55:40,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 18:55:40,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 18:55:40,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594465768] [2022-12-11 18:55:40,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 18:55:40,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 18:55:40,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 18:55:40,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 18:55:40,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-11 18:55:40,189 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 108 [2022-12-11 18:55:40,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 145 transitions, 871 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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 18:55:40,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 18:55:40,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 108 [2022-12-11 18:55:40,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 18:55:40,259 INFO L130 PetriNetUnfolder]: 80/671 cut-off events. [2022-12-11 18:55:40,260 INFO L131 PetriNetUnfolder]: For 1066/1069 co-relation queries the response was YES. [2022-12-11 18:55:40,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2105 conditions, 671 events. 80/671 cut-off events. For 1066/1069 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4567 event pairs, 24 based on Foata normal form. 11/677 useless extension candidates. Maximal degree in co-relation 2077. Up to 79 conditions per place. [2022-12-11 18:55:40,263 INFO L137 encePairwiseOnDemand]: 101/108 looper letters, 0 selfloop transitions, 0 changer transitions 115/115 dead transitions. [2022-12-11 18:55:40,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 115 transitions, 550 flow [2022-12-11 18:55:40,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 18:55:40,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 18:55:40,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 485 transitions. [2022-12-11 18:55:40,264 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8981481481481481 [2022-12-11 18:55:40,264 INFO L175 Difference]: Start difference. First operand has 160 places, 145 transitions, 871 flow. Second operand 5 states and 485 transitions. [2022-12-11 18:55:40,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 115 transitions, 550 flow [2022-12-11 18:55:40,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 115 transitions, 432 flow, removed 12 selfloop flow, removed 26 redundant places. [2022-12-11 18:55:40,269 INFO L231 Difference]: Finished difference. Result has 126 places, 0 transitions, 0 flow [2022-12-11 18:55:40,269 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=126, PETRI_TRANSITIONS=0} [2022-12-11 18:55:40,269 INFO L295 CegarLoopForPetriNet]: 102 programPoint places, 24 predicate places. [2022-12-11 18:55:40,269 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 0 transitions, 0 flow [2022-12-11 18:55:40,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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 18:55:40,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-11 18:55:40,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2022-12-11 18:55:40,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-11 18:55:40,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-12-11 18:55:40,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-12-11 18:55:40,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-12-11 18:55:40,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-12-11 18:55:40,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-11 18:55:40,273 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-12-11 18:55:40,276 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 18:55:40,276 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 18:55:40,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 06:55:40 BasicIcfg [2022-12-11 18:55:40,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 18:55:40,290 INFO L158 Benchmark]: Toolchain (without parser) took 12111.50ms. Allocated memory was 159.4MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 132.7MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 765.0MB. Max. memory is 8.0GB. [2022-12-11 18:55:40,290 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 159.4MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 18:55:40,290 INFO L158 Benchmark]: CACSL2BoogieTranslator took 358.52ms. Allocated memory is still 159.4MB. Free memory was 132.7MB in the beginning and 111.8MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-12-11 18:55:40,290 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.63ms. Allocated memory is still 159.4MB. Free memory was 111.8MB in the beginning and 109.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 18:55:40,290 INFO L158 Benchmark]: Boogie Preprocessor took 31.33ms. Allocated memory is still 159.4MB. Free memory was 109.7MB in the beginning and 108.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 18:55:40,291 INFO L158 Benchmark]: RCFGBuilder took 321.87ms. Allocated memory is still 159.4MB. Free memory was 108.0MB in the beginning and 92.7MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-11 18:55:40,291 INFO L158 Benchmark]: TraceAbstraction took 11334.77ms. Allocated memory was 159.4MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 136.1MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 767.1MB. Max. memory is 8.0GB. [2022-12-11 18:55:40,292 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 159.4MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 358.52ms. Allocated memory is still 159.4MB. Free memory was 132.7MB in the beginning and 111.8MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.63ms. Allocated memory is still 159.4MB. Free memory was 111.8MB in the beginning and 109.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.33ms. Allocated memory is still 159.4MB. Free memory was 109.7MB in the beginning and 108.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 321.87ms. Allocated memory is still 159.4MB. Free memory was 108.0MB in the beginning and 92.7MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 11334.77ms. Allocated memory was 159.4MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 136.1MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 767.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 7 procedures, 132 locations, 7 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: 11.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 434 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 434 mSDsluCounter, 268 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 149 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1316 IncrementalHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 119 mSDtfsCounter, 1316 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3462occurred in iteration=6, InterpolantAutomatonStates: 56, 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, 0.8s InterpolantComputationTime, 382 NumberOfCodeBlocks, 382 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 374 ConstructedInterpolants, 0 QuantifiedInterpolants, 648 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-11 18:55:40,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...