/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 20:14:48,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 20:14:48,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 20:14:48,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 20:14:48,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 20:14:48,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 20:14:48,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 20:14:48,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 20:14:48,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 20:14:48,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 20:14:48,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 20:14:48,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 20:14:48,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 20:14:48,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 20:14:48,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 20:14:48,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 20:14:48,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 20:14:48,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 20:14:48,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 20:14:48,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 20:14:48,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 20:14:48,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 20:14:48,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 20:14:48,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 20:14:48,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-05 20:14:48,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 20:14:48,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 20:14:48,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 20:14:48,704 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-05 20:14:48,730 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 20:14:48,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 20:14:48,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 20:14:48,731 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 20:14:48,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 20:14:48,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 20:14:48,732 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 20:14:48,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 20:14:48,733 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 20:14:48,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 20:14:48,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 20:14:48,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 20:14:48,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 20:14:48,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 20:14:48,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 20:14:48,734 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 20:14:48,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 20:14:48,734 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 20:14:48,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 20:14:48,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 20:14:48,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 20:14:48,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 20:14:48,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 20:14:48,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:14:48,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 20:14:48,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 20:14:48,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 20:14:48,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 20:14:48,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 20:14:48,735 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 20:14:48,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 20:14:48,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 20:14:48,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 20:14:49,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 20:14:49,000 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 20:14:49,003 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 20:14:49,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2022-12-05 20:14:49,884 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 20:14:50,113 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 20:14:50,113 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2022-12-05 20:14:50,124 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/747a49526/5ddbc8c5beba4432aac0a589c3d620b3/FLAGe72920170 [2022-12-05 20:14:50,136 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/747a49526/5ddbc8c5beba4432aac0a589c3d620b3 [2022-12-05 20:14:50,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 20:14:50,139 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 20:14:50,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 20:14:50,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 20:14:50,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 20:14:50,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:14:50" (1/1) ... [2022-12-05 20:14:50,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e60bacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:50, skipping insertion in model container [2022-12-05 20:14:50,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:14:50" (1/1) ... [2022-12-05 20:14:50,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 20:14:50,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 20:14:50,339 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-05 20:14:50,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,461 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,463 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/lamport.i[32156,32169] [2022-12-05 20:14:50,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,471 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,474 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,474 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,474 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,474 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,478 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/lamport.i[34083,34096] [2022-12-05 20:14:50,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:14:50,494 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 20:14:50,511 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-05 20:14:50,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,528 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,528 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,528 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,529 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,529 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,529 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,529 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,531 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,531 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,531 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,531 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,532 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,532 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,534 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,535 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,535 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,535 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,537 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/lamport.i[32156,32169] [2022-12-05 20:14:50,537 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,538 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,538 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,538 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,540 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,542 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,542 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,542 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,543 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,543 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,545 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,545 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,546 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,546 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,546 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,547 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,547 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,547 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,547 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,547 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,549 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,550 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/lamport.i[34083,34096] [2022-12-05 20:14:50,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:14:50,551 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:14:50,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:14:50,587 INFO L208 MainTranslator]: Completed translation [2022-12-05 20:14:50,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:50 WrapperNode [2022-12-05 20:14:50,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 20:14:50,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 20:14:50,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 20:14:50,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 20:14:50,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:50" (1/1) ... [2022-12-05 20:14:50,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:50" (1/1) ... [2022-12-05 20:14:50,634 INFO L138 Inliner]: procedures = 171, calls = 83, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2022-12-05 20:14:50,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 20:14:50,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 20:14:50,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 20:14:50,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 20:14:50,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:50" (1/1) ... [2022-12-05 20:14:50,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:50" (1/1) ... [2022-12-05 20:14:50,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:50" (1/1) ... [2022-12-05 20:14:50,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:50" (1/1) ... [2022-12-05 20:14:50,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:50" (1/1) ... [2022-12-05 20:14:50,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:50" (1/1) ... [2022-12-05 20:14:50,665 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:50" (1/1) ... [2022-12-05 20:14:50,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:50" (1/1) ... [2022-12-05 20:14:50,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 20:14:50,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 20:14:50,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 20:14:50,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 20:14:50,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:50" (1/1) ... [2022-12-05 20:14:50,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:14:50,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:14:50,710 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-05 20:14:50,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-05 20:14:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 20:14:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-12-05 20:14:50,737 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-12-05 20:14:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-05 20:14:50,737 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-05 20:14:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 20:14:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 20:14:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 20:14:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 20:14:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 20:14:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 20:14:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 20:14:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 20:14:50,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 20:14:50,738 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 20:14:50,819 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 20:14:50,820 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 20:14:50,972 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 20:14:50,977 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 20:14:50,977 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-05 20:14:50,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:14:50 BoogieIcfgContainer [2022-12-05 20:14:50,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 20:14:50,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 20:14:50,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 20:14:50,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 20:14:50,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:14:50" (1/3) ... [2022-12-05 20:14:50,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d09431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:14:50, skipping insertion in model container [2022-12-05 20:14:50,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:14:50" (2/3) ... [2022-12-05 20:14:50,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d09431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:14:50, skipping insertion in model container [2022-12-05 20:14:50,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:14:50" (3/3) ... [2022-12-05 20:14:50,986 INFO L112 eAbstractionObserver]: Analyzing ICFG lamport.i [2022-12-05 20:14:51,000 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 20:14:51,001 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-05 20:14:51,001 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 20:14:51,118 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 20:14:51,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 129 transitions, 274 flow [2022-12-05 20:14:51,228 INFO L130 PetriNetUnfolder]: 24/127 cut-off events. [2022-12-05 20:14:51,229 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 20:14:51,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 127 events. 24/127 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 253 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 97. Up to 5 conditions per place. [2022-12-05 20:14:51,235 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 129 transitions, 274 flow [2022-12-05 20:14:51,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 118 transitions, 245 flow [2022-12-05 20:14:51,242 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 20:14:51,260 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 118 transitions, 245 flow [2022-12-05 20:14:51,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 118 transitions, 245 flow [2022-12-05 20:14:51,302 INFO L130 PetriNetUnfolder]: 24/118 cut-off events. [2022-12-05 20:14:51,302 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-05 20:14:51,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 118 events. 24/118 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 249 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 97. Up to 5 conditions per place. [2022-12-05 20:14:51,306 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 118 transitions, 245 flow [2022-12-05 20:14:51,307 INFO L188 LiptonReduction]: Number of co-enabled transitions 4988 [2022-12-05 20:14:53,279 INFO L203 LiptonReduction]: Total number of compositions: 66 [2022-12-05 20:14:53,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 20:14:53,294 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;@5b2b1558, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 20:14:53,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-05 20:14:53,296 INFO L130 PetriNetUnfolder]: 1/8 cut-off events. [2022-12-05 20:14:53,296 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:14:53,296 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:53,297 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-05 20:14:53,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:14:53,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:53,300 INFO L85 PathProgramCache]: Analyzing trace with hash 16650068, now seen corresponding path program 1 times [2022-12-05 20:14:53,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:53,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896620280] [2022-12-05 20:14:53,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:53,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:53,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:53,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:53,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896620280] [2022-12-05 20:14:53,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896620280] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:14:53,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:14:53,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:14:53,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045804675] [2022-12-05 20:14:53,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:14:53,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-05 20:14:53,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:53,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-05 20:14:53,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-05 20:14:53,421 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 63 [2022-12-05 20:14:53,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 63 transitions, 135 flow. Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:53,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:53,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 63 [2022-12-05 20:14:53,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:53,547 INFO L130 PetriNetUnfolder]: 895/1508 cut-off events. [2022-12-05 20:14:53,547 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-12-05 20:14:53,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2818 conditions, 1508 events. 895/1508 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7775 event pairs, 461 based on Foata normal form. 0/1158 useless extension candidates. Maximal degree in co-relation 2646. Up to 1269 conditions per place. [2022-12-05 20:14:53,556 INFO L137 encePairwiseOnDemand]: 57/63 looper letters, 39 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2022-12-05 20:14:53,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 201 flow [2022-12-05 20:14:53,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-05 20:14:53,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-05 20:14:53,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 81 transitions. [2022-12-05 20:14:53,564 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2022-12-05 20:14:53,565 INFO L175 Difference]: Start difference. First operand has 52 places, 63 transitions, 135 flow. Second operand 2 states and 81 transitions. [2022-12-05 20:14:53,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 201 flow [2022-12-05 20:14:53,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 196 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 20:14:53,569 INFO L231 Difference]: Finished difference. Result has 50 places, 57 transitions, 118 flow [2022-12-05 20:14:53,570 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=50, PETRI_TRANSITIONS=57} [2022-12-05 20:14:53,572 INFO L294 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2022-12-05 20:14:53,572 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 57 transitions, 118 flow [2022-12-05 20:14:53,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:53,573 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:53,573 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:53,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 20:14:53,573 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:14:53,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:53,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1791123962, now seen corresponding path program 1 times [2022-12-05 20:14:53,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:53,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858842017] [2022-12-05 20:14:53,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:53,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:53,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:53,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:53,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858842017] [2022-12-05 20:14:53,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858842017] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:14:53,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:14:53,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:14:53,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897048319] [2022-12-05 20:14:53,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:14:53,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:14:53,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:53,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:14:53,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:14:53,632 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 63 [2022-12-05 20:14:53,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 57 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:53,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:53,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 63 [2022-12-05 20:14:53,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:53,745 INFO L130 PetriNetUnfolder]: 1025/1678 cut-off events. [2022-12-05 20:14:53,745 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-05 20:14:53,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3196 conditions, 1678 events. 1025/1678 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8559 event pairs, 383 based on Foata normal form. 0/1266 useless extension candidates. Maximal degree in co-relation 3193. Up to 1138 conditions per place. [2022-12-05 20:14:53,752 INFO L137 encePairwiseOnDemand]: 57/63 looper letters, 58 selfloop transitions, 5 changer transitions 1/79 dead transitions. [2022-12-05 20:14:53,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 79 transitions, 291 flow [2022-12-05 20:14:53,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:14:53,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:14:53,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2022-12-05 20:14:53,753 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.582010582010582 [2022-12-05 20:14:53,753 INFO L175 Difference]: Start difference. First operand has 50 places, 57 transitions, 118 flow. Second operand 3 states and 110 transitions. [2022-12-05 20:14:53,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 79 transitions, 291 flow [2022-12-05 20:14:53,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 79 transitions, 291 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 20:14:53,755 INFO L231 Difference]: Finished difference. Result has 54 places, 59 transitions, 148 flow [2022-12-05 20:14:53,755 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=54, PETRI_TRANSITIONS=59} [2022-12-05 20:14:53,756 INFO L294 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2022-12-05 20:14:53,756 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 59 transitions, 148 flow [2022-12-05 20:14:53,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:53,756 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:53,756 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:53,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 20:14:53,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:14:53,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:53,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1759532464, now seen corresponding path program 1 times [2022-12-05 20:14:53,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:53,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321884125] [2022-12-05 20:14:53,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:53,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:53,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:53,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:53,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321884125] [2022-12-05 20:14:53,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321884125] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:14:53,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:14:53,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:14:53,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633054026] [2022-12-05 20:14:53,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:14:53,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:14:53,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:53,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:14:53,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:14:53,799 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 63 [2022-12-05 20:14:53,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:53,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:53,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 63 [2022-12-05 20:14:53,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:53,935 INFO L130 PetriNetUnfolder]: 958/1577 cut-off events. [2022-12-05 20:14:53,936 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2022-12-05 20:14:53,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3192 conditions, 1577 events. 958/1577 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 7944 event pairs, 387 based on Foata normal form. 38/1247 useless extension candidates. Maximal degree in co-relation 3187. Up to 1135 conditions per place. [2022-12-05 20:14:53,940 INFO L137 encePairwiseOnDemand]: 57/63 looper letters, 54 selfloop transitions, 4 changer transitions 4/77 dead transitions. [2022-12-05 20:14:53,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 309 flow [2022-12-05 20:14:53,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:14:53,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:14:53,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2022-12-05 20:14:53,941 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5767195767195767 [2022-12-05 20:14:53,942 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 148 flow. Second operand 3 states and 109 transitions. [2022-12-05 20:14:53,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 309 flow [2022-12-05 20:14:53,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 77 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 20:14:53,945 INFO L231 Difference]: Finished difference. Result has 55 places, 59 transitions, 154 flow [2022-12-05 20:14:53,945 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=55, PETRI_TRANSITIONS=59} [2022-12-05 20:14:53,945 INFO L294 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2022-12-05 20:14:53,946 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 59 transitions, 154 flow [2022-12-05 20:14:53,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:53,946 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:53,946 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:53,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 20:14:53,946 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:14:53,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:53,947 INFO L85 PathProgramCache]: Analyzing trace with hash -925454344, now seen corresponding path program 1 times [2022-12-05 20:14:53,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:53,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261119362] [2022-12-05 20:14:53,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:53,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:53,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:53,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261119362] [2022-12-05 20:14:53,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261119362] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:14:53,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:14:53,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:14:53,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012364908] [2022-12-05 20:14:53,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:14:53,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:14:53,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:53,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:14:53,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:14:53,990 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 63 [2022-12-05 20:14:53,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 59 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:53,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:53,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 63 [2022-12-05 20:14:53,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:54,158 INFO L130 PetriNetUnfolder]: 1361/2426 cut-off events. [2022-12-05 20:14:54,158 INFO L131 PetriNetUnfolder]: For 468/494 co-relation queries the response was YES. [2022-12-05 20:14:54,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4850 conditions, 2426 events. 1361/2426 cut-off events. For 468/494 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14532 event pairs, 337 based on Foata normal form. 68/2070 useless extension candidates. Maximal degree in co-relation 4844. Up to 1175 conditions per place. [2022-12-05 20:14:54,167 INFO L137 encePairwiseOnDemand]: 58/63 looper letters, 69 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2022-12-05 20:14:54,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 89 transitions, 375 flow [2022-12-05 20:14:54,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:14:54,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:14:54,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2022-12-05 20:14:54,169 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2022-12-05 20:14:54,169 INFO L175 Difference]: Start difference. First operand has 55 places, 59 transitions, 154 flow. Second operand 3 states and 120 transitions. [2022-12-05 20:14:54,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 89 transitions, 375 flow [2022-12-05 20:14:54,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 89 transitions, 369 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:14:54,172 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 178 flow [2022-12-05 20:14:54,172 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2022-12-05 20:14:54,173 INFO L294 CegarLoopForPetriNet]: 52 programPoint places, 6 predicate places. [2022-12-05 20:14:54,173 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 178 flow [2022-12-05 20:14:54,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:54,173 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:54,173 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:54,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 20:14:54,174 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:14:54,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:54,174 INFO L85 PathProgramCache]: Analyzing trace with hash -784249074, now seen corresponding path program 2 times [2022-12-05 20:14:54,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:54,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458134843] [2022-12-05 20:14:54,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:54,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:54,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:54,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:54,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458134843] [2022-12-05 20:14:54,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458134843] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:14:54,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:14:54,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:14:54,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841612591] [2022-12-05 20:14:54,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:14:54,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:14:54,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:54,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:14:54,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:14:54,207 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 63 [2022-12-05 20:14:54,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:54,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:54,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 63 [2022-12-05 20:14:54,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:54,483 INFO L130 PetriNetUnfolder]: 2994/5014 cut-off events. [2022-12-05 20:14:54,484 INFO L131 PetriNetUnfolder]: For 697/769 co-relation queries the response was YES. [2022-12-05 20:14:54,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10701 conditions, 5014 events. 2994/5014 cut-off events. For 697/769 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 29987 event pairs, 1022 based on Foata normal form. 62/4283 useless extension candidates. Maximal degree in co-relation 10694. Up to 2844 conditions per place. [2022-12-05 20:14:54,504 INFO L137 encePairwiseOnDemand]: 54/63 looper letters, 81 selfloop transitions, 7 changer transitions 1/101 dead transitions. [2022-12-05 20:14:54,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 101 transitions, 458 flow [2022-12-05 20:14:54,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:14:54,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:14:54,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2022-12-05 20:14:54,505 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6084656084656085 [2022-12-05 20:14:54,505 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 178 flow. Second operand 3 states and 115 transitions. [2022-12-05 20:14:54,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 101 transitions, 458 flow [2022-12-05 20:14:54,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 101 transitions, 450 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 20:14:54,510 INFO L231 Difference]: Finished difference. Result has 59 places, 67 transitions, 223 flow [2022-12-05 20:14:54,510 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=59, PETRI_TRANSITIONS=67} [2022-12-05 20:14:54,510 INFO L294 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2022-12-05 20:14:54,510 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 67 transitions, 223 flow [2022-12-05 20:14:54,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:54,511 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:54,511 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:54,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 20:14:54,511 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:14:54,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:54,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2040088082, now seen corresponding path program 3 times [2022-12-05 20:14:54,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:54,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460729488] [2022-12-05 20:14:54,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:54,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:54,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:54,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460729488] [2022-12-05 20:14:54,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460729488] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:14:54,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:14:54,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:14:54,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737987640] [2022-12-05 20:14:54,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:14:54,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:14:54,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:54,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:14:54,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:14:54,539 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 63 [2022-12-05 20:14:54,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 67 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:54,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:54,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 63 [2022-12-05 20:14:54,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:54,775 INFO L130 PetriNetUnfolder]: 2683/4557 cut-off events. [2022-12-05 20:14:54,775 INFO L131 PetriNetUnfolder]: For 1288/1394 co-relation queries the response was YES. [2022-12-05 20:14:54,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10616 conditions, 4557 events. 2683/4557 cut-off events. For 1288/1394 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 27907 event pairs, 1241 based on Foata normal form. 86/4093 useless extension candidates. Maximal degree in co-relation 10608. Up to 3335 conditions per place. [2022-12-05 20:14:54,788 INFO L137 encePairwiseOnDemand]: 54/63 looper letters, 49 selfloop transitions, 10 changer transitions 25/96 dead transitions. [2022-12-05 20:14:54,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 96 transitions, 480 flow [2022-12-05 20:14:54,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:14:54,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:14:54,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2022-12-05 20:14:54,789 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2022-12-05 20:14:54,789 INFO L175 Difference]: Start difference. First operand has 59 places, 67 transitions, 223 flow. Second operand 3 states and 105 transitions. [2022-12-05 20:14:54,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 96 transitions, 480 flow [2022-12-05 20:14:54,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 96 transitions, 471 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:14:54,794 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 260 flow [2022-12-05 20:14:54,794 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2022-12-05 20:14:54,795 INFO L294 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2022-12-05 20:14:54,795 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 260 flow [2022-12-05 20:14:54,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:54,795 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:54,795 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:54,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 20:14:54,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:14:54,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:54,796 INFO L85 PathProgramCache]: Analyzing trace with hash -77328536, now seen corresponding path program 4 times [2022-12-05 20:14:54,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:54,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395754858] [2022-12-05 20:14:54,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:54,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:54,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:54,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:54,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395754858] [2022-12-05 20:14:54,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395754858] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:14:54,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:14:54,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:14:54,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88045592] [2022-12-05 20:14:54,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:14:54,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:14:54,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:54,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:14:54,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:14:54,827 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 63 [2022-12-05 20:14:54,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:54,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:54,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 63 [2022-12-05 20:14:54,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:54,962 INFO L130 PetriNetUnfolder]: 1001/2094 cut-off events. [2022-12-05 20:14:54,962 INFO L131 PetriNetUnfolder]: For 1076/1146 co-relation queries the response was YES. [2022-12-05 20:14:54,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5083 conditions, 2094 events. 1001/2094 cut-off events. For 1076/1146 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13867 event pairs, 346 based on Foata normal form. 90/1967 useless extension candidates. Maximal degree in co-relation 5074. Up to 871 conditions per place. [2022-12-05 20:14:54,972 INFO L137 encePairwiseOnDemand]: 59/63 looper letters, 60 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2022-12-05 20:14:54,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 433 flow [2022-12-05 20:14:54,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:14:54,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:14:54,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2022-12-05 20:14:54,973 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2022-12-05 20:14:54,973 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 260 flow. Second operand 3 states and 108 transitions. [2022-12-05 20:14:54,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 433 flow [2022-12-05 20:14:54,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 411 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-05 20:14:54,977 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 244 flow [2022-12-05 20:14:54,977 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2022-12-05 20:14:54,977 INFO L294 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2022-12-05 20:14:54,977 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 244 flow [2022-12-05 20:14:54,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:54,978 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:54,978 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:54,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 20:14:54,978 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:14:54,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:54,978 INFO L85 PathProgramCache]: Analyzing trace with hash 173949397, now seen corresponding path program 1 times [2022-12-05 20:14:54,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:54,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892359317] [2022-12-05 20:14:54,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:54,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:55,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:55,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892359317] [2022-12-05 20:14:55,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892359317] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:14:55,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:14:55,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 20:14:55,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410776111] [2022-12-05 20:14:55,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:14:55,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:14:55,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:55,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:14:55,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:14:55,013 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 63 [2022-12-05 20:14:55,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:55,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:55,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 63 [2022-12-05 20:14:55,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:55,160 INFO L130 PetriNetUnfolder]: 970/1980 cut-off events. [2022-12-05 20:14:55,160 INFO L131 PetriNetUnfolder]: For 705/764 co-relation queries the response was YES. [2022-12-05 20:14:55,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4650 conditions, 1980 events. 970/1980 cut-off events. For 705/764 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12761 event pairs, 344 based on Foata normal form. 42/1826 useless extension candidates. Maximal degree in co-relation 4640. Up to 960 conditions per place. [2022-12-05 20:14:55,166 INFO L137 encePairwiseOnDemand]: 56/63 looper letters, 33 selfloop transitions, 3 changer transitions 33/92 dead transitions. [2022-12-05 20:14:55,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 92 transitions, 475 flow [2022-12-05 20:14:55,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:14:55,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:14:55,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2022-12-05 20:14:55,167 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4634920634920635 [2022-12-05 20:14:55,167 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 244 flow. Second operand 5 states and 146 transitions. [2022-12-05 20:14:55,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 92 transitions, 475 flow [2022-12-05 20:14:55,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 92 transitions, 469 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 20:14:55,170 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 213 flow [2022-12-05 20:14:55,170 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2022-12-05 20:14:55,171 INFO L294 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2022-12-05 20:14:55,171 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 213 flow [2022-12-05 20:14:55,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:55,171 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:14:55,171 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:14:55,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 20:14:55,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:14:55,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:14:55,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1185779049, now seen corresponding path program 1 times [2022-12-05 20:14:55,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:14:55,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464372405] [2022-12-05 20:14:55,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:14:55,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:14:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:14:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:14:55,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:14:55,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464372405] [2022-12-05 20:14:55,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464372405] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:14:55,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:14:55,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 20:14:55,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991204425] [2022-12-05 20:14:55,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:14:55,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:14:55,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:14:55,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:14:55,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:14:55,232 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 63 [2022-12-05 20:14:55,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:55,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:14:55,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 63 [2022-12-05 20:14:55,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:14:55,334 INFO L130 PetriNetUnfolder]: 598/1205 cut-off events. [2022-12-05 20:14:55,334 INFO L131 PetriNetUnfolder]: For 470/482 co-relation queries the response was YES. [2022-12-05 20:14:55,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2905 conditions, 1205 events. 598/1205 cut-off events. For 470/482 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6543 event pairs, 194 based on Foata normal form. 22/1091 useless extension candidates. Maximal degree in co-relation 2893. Up to 568 conditions per place. [2022-12-05 20:14:55,337 INFO L137 encePairwiseOnDemand]: 57/63 looper letters, 0 selfloop transitions, 0 changer transitions 77/77 dead transitions. [2022-12-05 20:14:55,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 77 transitions, 394 flow [2022-12-05 20:14:55,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:14:55,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:14:55,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2022-12-05 20:14:55,338 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.43174603174603177 [2022-12-05 20:14:55,338 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 213 flow. Second operand 5 states and 136 transitions. [2022-12-05 20:14:55,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 77 transitions, 394 flow [2022-12-05 20:14:55,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 360 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-12-05 20:14:55,340 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2022-12-05 20:14:55,340 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2022-12-05 20:14:55,340 INFO L294 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2022-12-05 20:14:55,341 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2022-12-05 20:14:55,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:14:55,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-05 20:14:55,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-12-05 20:14:55,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-12-05 20:14:55,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-12-05 20:14:55,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-12-05 20:14:55,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-12-05 20:14:55,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 20:14:55,359 INFO L458 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1] [2022-12-05 20:14:55,363 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 20:14:55,363 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 20:14:55,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 08:14:55 BasicIcfg [2022-12-05 20:14:55,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 20:14:55,365 INFO L158 Benchmark]: Toolchain (without parser) took 5226.31ms. Allocated memory was 163.6MB in the beginning and 255.9MB in the end (delta: 92.3MB). Free memory was 137.6MB in the beginning and 184.9MB in the end (delta: -47.2MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. [2022-12-05 20:14:55,365 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 163.6MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:14:55,366 INFO L158 Benchmark]: CACSL2BoogieTranslator took 448.43ms. Allocated memory is still 163.6MB. Free memory was 137.1MB in the beginning and 108.8MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-12-05 20:14:55,366 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.99ms. Allocated memory is still 163.6MB. Free memory was 108.8MB in the beginning and 106.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 20:14:55,366 INFO L158 Benchmark]: Boogie Preprocessor took 41.45ms. Allocated memory is still 163.6MB. Free memory was 106.7MB in the beginning and 105.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 20:14:55,366 INFO L158 Benchmark]: RCFGBuilder took 301.64ms. Allocated memory is still 163.6MB. Free memory was 105.1MB in the beginning and 89.9MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-12-05 20:14:55,367 INFO L158 Benchmark]: TraceAbstraction took 4384.68ms. Allocated memory was 163.6MB in the beginning and 255.9MB in the end (delta: 92.3MB). Free memory was 89.4MB in the beginning and 184.9MB in the end (delta: -95.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:14:55,367 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 163.6MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 448.43ms. Allocated memory is still 163.6MB. Free memory was 137.1MB in the beginning and 108.8MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.99ms. Allocated memory is still 163.6MB. Free memory was 108.8MB in the beginning and 106.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.45ms. Allocated memory is still 163.6MB. Free memory was 106.7MB in the beginning and 105.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 301.64ms. Allocated memory is still 163.6MB. Free memory was 105.1MB in the beginning and 89.9MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 4384.68ms. Allocated memory was 163.6MB in the beginning and 255.9MB in the end (delta: 92.3MB). Free memory was 89.4MB in the beginning and 184.9MB in the end (delta: -95.5MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 101 PlacesBefore, 52 PlacesAfterwards, 118 TransitionsBefore, 63 TransitionsAfterwards, 4988 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 31 ConcurrentYvCompositions, 6 ChoiceCompositions, 66 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3653, independent: 3471, independent conditional: 3471, independent unconditional: 0, dependent: 182, dependent conditional: 182, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 3653, independent: 3471, independent conditional: 0, independent unconditional: 3471, dependent: 182, dependent conditional: 0, dependent unconditional: 182, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 3653, independent: 3471, independent conditional: 0, independent unconditional: 3471, dependent: 182, dependent conditional: 0, dependent unconditional: 182, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3653, independent: 3471, independent conditional: 0, independent unconditional: 3471, dependent: 182, dependent conditional: 0, dependent unconditional: 182, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2577, independent: 2504, independent conditional: 0, independent unconditional: 2504, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2577, independent: 2456, independent conditional: 0, independent unconditional: 2456, dependent: 121, dependent conditional: 0, dependent unconditional: 121, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 121, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 93, independent: 22, independent conditional: 0, independent unconditional: 22, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3653, independent: 967, independent conditional: 0, independent unconditional: 967, dependent: 109, dependent conditional: 0, dependent unconditional: 109, unknown: 2577, unknown conditional: 0, unknown unconditional: 2577] , Statistics on independence cache: Total cache size (in pairs): 3647, Positive cache size: 3574, Positive conditional cache size: 0, Positive unconditional cache size: 3574, Negative cache size: 73, Negative conditional cache size: 0, Negative unconditional cache size: 73, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 834]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 764]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 172 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 210 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 210 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 856 IncrementalHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 37 mSDtfsCounter, 856 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=260occurred in iteration=6, InterpolantAutomatonStates: 30, 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 20:14:55,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...