/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 --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe037.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 18:44:08,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 18:44:08,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 18:44:08,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 18:44:08,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 18:44:08,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 18:44:08,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 18:44:08,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 18:44:08,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 18:44:08,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 18:44:08,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 18:44:08,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 18:44:08,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 18:44:08,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 18:44:08,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 18:44:08,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 18:44:08,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 18:44:08,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 18:44:08,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 18:44:08,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 18:44:08,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 18:44:08,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 18:44:08,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 18:44:08,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 18:44:08,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 18:44:08,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 18:44:08,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 18:44:08,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 18:44:08,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 18:44:08,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 18:44:08,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 18:44:08,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 18:44:08,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 18:44:08,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 18:44:08,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 18:44:08,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 18:44:08,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 18:44:08,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 18:44:08,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 18:44:08,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 18:44:08,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 18:44:08,694 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 [2022-12-12 18:44:08,732 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 18:44:08,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 18:44:08,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 18:44:08,734 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 18:44:08,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 18:44:08,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 18:44:08,735 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 18:44:08,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 18:44:08,736 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 18:44:08,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 18:44:08,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 18:44:08,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 18:44:08,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 18:44:08,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 18:44:08,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 18:44:08,737 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 18:44:08,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 18:44:08,737 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 18:44:08,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 18:44:08,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 18:44:08,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 18:44:08,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 18:44:08,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 18:44:08,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:44:08,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 18:44:08,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 18:44:08,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 18:44:08,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 18:44:08,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 18:44:08,739 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 18:44:08,739 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 18:44:09,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 18:44:09,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 18:44:09,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 18:44:09,101 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 18:44:09,102 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 18:44:09,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037.i [2022-12-12 18:44:10,175 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 18:44:10,447 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 18:44:10,448 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037.i [2022-12-12 18:44:10,463 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09737fbb0/b98bc4b7c24f4679ae68a247e0e2c4c5/FLAG3387adf11 [2022-12-12 18:44:10,481 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09737fbb0/b98bc4b7c24f4679ae68a247e0e2c4c5 [2022-12-12 18:44:10,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 18:44:10,483 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 18:44:10,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 18:44:10,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 18:44:10,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 18:44:10,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:44:10" (1/1) ... [2022-12-12 18:44:10,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61163313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:10, skipping insertion in model container [2022-12-12 18:44:10,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:44:10" (1/1) ... [2022-12-12 18:44:10,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 18:44:10,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 18:44:10,659 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037.i[941,954] [2022-12-12 18:44:10,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,801 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:44:10,811 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 18:44:10,824 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037.i[941,954] [2022-12-12 18:44:10,846 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,847 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,847 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,847 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,847 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,847 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,848 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,848 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,848 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,848 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,849 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,849 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,849 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,849 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,849 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,852 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,852 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,852 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,855 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,855 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,855 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,855 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,858 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,858 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:44:10,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:44:10,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:44:10,897 INFO L208 MainTranslator]: Completed translation [2022-12-12 18:44:10,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:10 WrapperNode [2022-12-12 18:44:10,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 18:44:10,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 18:44:10,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 18:44:10,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 18:44:10,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:10" (1/1) ... [2022-12-12 18:44:10,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:10" (1/1) ... [2022-12-12 18:44:10,931 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2022-12-12 18:44:10,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 18:44:10,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 18:44:10,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 18:44:10,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 18:44:10,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:10" (1/1) ... [2022-12-12 18:44:10,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:10" (1/1) ... [2022-12-12 18:44:10,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:10" (1/1) ... [2022-12-12 18:44:10,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:10" (1/1) ... [2022-12-12 18:44:10,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:10" (1/1) ... [2022-12-12 18:44:10,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:10" (1/1) ... [2022-12-12 18:44:10,949 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:10" (1/1) ... [2022-12-12 18:44:10,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:10" (1/1) ... [2022-12-12 18:44:10,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 18:44:10,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 18:44:10,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 18:44:10,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 18:44:10,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:10" (1/1) ... [2022-12-12 18:44:10,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:44:10,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:44:10,985 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) [2022-12-12 18:44:10,996 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 [2022-12-12 18:44:11,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 18:44:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 18:44:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 18:44:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 18:44:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 18:44:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 18:44:11,021 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 18:44:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 18:44:11,021 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 18:44:11,022 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 18:44:11,022 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 18:44:11,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 18:44:11,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 18:44:11,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 18:44:11,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 18:44:11,023 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 18:44:11,195 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 18:44:11,197 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 18:44:11,360 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 18:44:11,365 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 18:44:11,366 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 18:44:11,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:44:11 BoogieIcfgContainer [2022-12-12 18:44:11,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 18:44:11,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 18:44:11,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 18:44:11,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 18:44:11,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 06:44:10" (1/3) ... [2022-12-12 18:44:11,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3458ffef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:44:11, skipping insertion in model container [2022-12-12 18:44:11,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:44:10" (2/3) ... [2022-12-12 18:44:11,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3458ffef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:44:11, skipping insertion in model container [2022-12-12 18:44:11,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:44:11" (3/3) ... [2022-12-12 18:44:11,375 INFO L112 eAbstractionObserver]: Analyzing ICFG safe037.i [2022-12-12 18:44:11,392 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 18:44:11,392 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 18:44:11,392 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 18:44:11,480 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 18:44:11,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 187 flow [2022-12-12 18:44:11,587 INFO L130 PetriNetUnfolder]: 2/83 cut-off events. [2022-12-12 18:44:11,587 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:44:11,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-12-12 18:44:11,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 86 transitions, 187 flow [2022-12-12 18:44:11,598 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 71 transitions, 151 flow [2022-12-12 18:44:11,600 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 18:44:11,631 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 71 transitions, 151 flow [2022-12-12 18:44:11,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 71 transitions, 151 flow [2022-12-12 18:44:11,670 INFO L130 PetriNetUnfolder]: 1/71 cut-off events. [2022-12-12 18:44:11,670 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:44:11,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-12 18:44:11,674 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 71 transitions, 151 flow [2022-12-12 18:44:11,674 INFO L226 LiptonReduction]: Number of co-enabled transitions 1044 [2022-12-12 18:44:13,971 INFO L241 LiptonReduction]: Total number of compositions: 54 [2022-12-12 18:44:13,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 18:44:13,993 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;@1756a951, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 18:44:13,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 18:44:13,998 INFO L130 PetriNetUnfolder]: 0/21 cut-off events. [2022-12-12 18:44:13,998 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:44:13,998 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:44:13,999 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:44:13,999 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 18:44:14,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:44:14,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1517846936, now seen corresponding path program 1 times [2022-12-12 18:44:14,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:44:14,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22052729] [2022-12-12 18:44:14,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:44:14,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:44:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:44:14,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:44:14,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:44:14,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22052729] [2022-12-12 18:44:14,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22052729] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:44:14,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:44:14,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:44:14,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187815997] [2022-12-12 18:44:14,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:44:14,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:44:14,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:44:14,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:44:14,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:44:14,471 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 18:44:14,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2022-12-12 18:44:14,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:44:14,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 18:44:14,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:44:14,690 INFO L130 PetriNetUnfolder]: 951/1512 cut-off events. [2022-12-12 18:44:14,690 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-12 18:44:14,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3075 conditions, 1512 events. 951/1512 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 8037 event pairs, 81 based on Foata normal form. 125/1034 useless extension candidates. Maximal degree in co-relation 3064. Up to 739 conditions per place. [2022-12-12 18:44:14,701 INFO L137 encePairwiseOnDemand]: 14/27 looper letters, 37 selfloop transitions, 11 changer transitions 1/55 dead transitions. [2022-12-12 18:44:14,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 55 transitions, 223 flow [2022-12-12 18:44:14,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:44:14,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:44:14,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2022-12-12 18:44:14,710 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7129629629629629 [2022-12-12 18:44:14,713 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2022-12-12 18:44:14,713 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 55 transitions, 223 flow [2022-12-12 18:44:14,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 54 transitions, 219 flow [2022-12-12 18:44:14,721 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 54 transitions, 219 flow [2022-12-12 18:44:14,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2022-12-12 18:44:14,721 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:44:14,721 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:44:14,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 18:44:14,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 18:44:14,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:44:14,722 INFO L85 PathProgramCache]: Analyzing trace with hash -704738502, now seen corresponding path program 1 times [2022-12-12 18:44:14,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:44:14,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868956268] [2022-12-12 18:44:14,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:44:14,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:44:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:44:14,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:44:14,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:44:14,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868956268] [2022-12-12 18:44:14,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868956268] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:44:14,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:44:14,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:44:14,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780476034] [2022-12-12 18:44:14,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:44:14,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 18:44:14,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:44:14,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 18:44:14,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 18:44:14,887 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 18:44:14,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 54 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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) [2022-12-12 18:44:14,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:44:14,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 18:44:14,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:44:15,066 INFO L130 PetriNetUnfolder]: 651/1131 cut-off events. [2022-12-12 18:44:15,067 INFO L131 PetriNetUnfolder]: For 36/42 co-relation queries the response was YES. [2022-12-12 18:44:15,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3431 conditions, 1131 events. 651/1131 cut-off events. For 36/42 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6122 event pairs, 15 based on Foata normal form. 117/817 useless extension candidates. Maximal degree in co-relation 3417. Up to 667 conditions per place. [2022-12-12 18:44:15,075 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 42 selfloop transitions, 20 changer transitions 25/93 dead transitions. [2022-12-12 18:44:15,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 93 transitions, 552 flow [2022-12-12 18:44:15,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 18:44:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 18:44:15,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2022-12-12 18:44:15,079 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2022-12-12 18:44:15,079 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2022-12-12 18:44:15,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 93 transitions, 552 flow [2022-12-12 18:44:15,085 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 68 transitions, 402 flow [2022-12-12 18:44:15,085 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 68 transitions, 402 flow [2022-12-12 18:44:15,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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) [2022-12-12 18:44:15,086 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:44:15,087 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:44:15,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 18:44:15,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 18:44:15,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:44:15,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1500957224, now seen corresponding path program 1 times [2022-12-12 18:44:15,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:44:15,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368167952] [2022-12-12 18:44:15,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:44:15,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:44:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:44:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:44:15,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:44:15,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368167952] [2022-12-12 18:44:15,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368167952] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:44:15,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:44:15,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:44:15,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243475508] [2022-12-12 18:44:15,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:44:15,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:44:15,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:44:15,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:44:15,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:44:15,276 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2022-12-12 18:44:15,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 68 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2022-12-12 18:44:15,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:44:15,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2022-12-12 18:44:15,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:44:15,462 INFO L130 PetriNetUnfolder]: 799/1434 cut-off events. [2022-12-12 18:44:15,462 INFO L131 PetriNetUnfolder]: For 495/546 co-relation queries the response was YES. [2022-12-12 18:44:15,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5423 conditions, 1434 events. 799/1434 cut-off events. For 495/546 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8669 event pairs, 12 based on Foata normal form. 72/1221 useless extension candidates. Maximal degree in co-relation 5406. Up to 735 conditions per place. [2022-12-12 18:44:15,471 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 72 selfloop transitions, 5 changer transitions 28/122 dead transitions. [2022-12-12 18:44:15,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 122 transitions, 947 flow [2022-12-12 18:44:15,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:44:15,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:44:15,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2022-12-12 18:44:15,473 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-12-12 18:44:15,473 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2022-12-12 18:44:15,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 122 transitions, 947 flow [2022-12-12 18:44:15,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 94 transitions, 717 flow [2022-12-12 18:44:15,480 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 94 transitions, 717 flow [2022-12-12 18:44:15,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2022-12-12 18:44:15,480 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:44:15,480 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:44:15,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 18:44:15,481 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 18:44:15,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:44:15,481 INFO L85 PathProgramCache]: Analyzing trace with hash -695275086, now seen corresponding path program 1 times [2022-12-12 18:44:15,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:44:15,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070822580] [2022-12-12 18:44:15,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:44:15,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:44:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:44:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:44:15,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:44:15,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070822580] [2022-12-12 18:44:15,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070822580] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:44:15,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:44:15,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 18:44:15,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328759734] [2022-12-12 18:44:15,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:44:15,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 18:44:15,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:44:15,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 18:44:15,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-12 18:44:15,592 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 18:44:15,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 94 transitions, 717 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2022-12-12 18:44:15,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:44:15,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 18:44:15,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:44:15,748 INFO L130 PetriNetUnfolder]: 392/873 cut-off events. [2022-12-12 18:44:15,748 INFO L131 PetriNetUnfolder]: For 625/755 co-relation queries the response was YES. [2022-12-12 18:44:15,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4034 conditions, 873 events. 392/873 cut-off events. For 625/755 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5444 event pairs, 12 based on Foata normal form. 121/841 useless extension candidates. Maximal degree in co-relation 4014. Up to 519 conditions per place. [2022-12-12 18:44:15,753 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 26 selfloop transitions, 37 changer transitions 26/94 dead transitions. [2022-12-12 18:44:15,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 94 transitions, 891 flow [2022-12-12 18:44:15,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 18:44:15,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 18:44:15,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2022-12-12 18:44:15,755 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5493827160493827 [2022-12-12 18:44:15,755 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2022-12-12 18:44:15,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 94 transitions, 891 flow [2022-12-12 18:44:15,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 68 transitions, 648 flow [2022-12-12 18:44:15,759 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 68 transitions, 648 flow [2022-12-12 18:44:15,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2022-12-12 18:44:15,759 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:44:15,759 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:44:15,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 18:44:15,760 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 18:44:15,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:44:15,760 INFO L85 PathProgramCache]: Analyzing trace with hash 83392483, now seen corresponding path program 1 times [2022-12-12 18:44:15,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:44:15,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52133007] [2022-12-12 18:44:15,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:44:15,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:44:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:44:15,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:44:15,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:44:15,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52133007] [2022-12-12 18:44:15,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52133007] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:44:15,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:44:15,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:44:15,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234577383] [2022-12-12 18:44:15,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:44:15,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:44:15,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:44:15,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:44:15,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:44:15,852 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2022-12-12 18:44:15,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 68 transitions, 648 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2022-12-12 18:44:15,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:44:15,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2022-12-12 18:44:15,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:44:15,986 INFO L130 PetriNetUnfolder]: 417/884 cut-off events. [2022-12-12 18:44:15,986 INFO L131 PetriNetUnfolder]: For 1290/1308 co-relation queries the response was YES. [2022-12-12 18:44:15,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4732 conditions, 884 events. 417/884 cut-off events. For 1290/1308 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5398 event pairs, 17 based on Foata normal form. 37/729 useless extension candidates. Maximal degree in co-relation 4709. Up to 679 conditions per place. [2022-12-12 18:44:15,992 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 50 selfloop transitions, 3 changer transitions 35/101 dead transitions. [2022-12-12 18:44:15,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 101 transitions, 1146 flow [2022-12-12 18:44:15,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:44:15,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:44:15,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2022-12-12 18:44:15,993 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2022-12-12 18:44:15,994 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2022-12-12 18:44:15,994 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 101 transitions, 1146 flow [2022-12-12 18:44:15,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 66 transitions, 734 flow [2022-12-12 18:44:15,999 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 66 transitions, 734 flow [2022-12-12 18:44:15,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2022-12-12 18:44:15,999 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:44:15,999 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:44:15,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 18:44:15,999 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 18:44:16,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:44:16,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1097525286, now seen corresponding path program 1 times [2022-12-12 18:44:16,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:44:16,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879170709] [2022-12-12 18:44:16,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:44:16,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:44:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:44:16,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:44:16,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:44:16,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879170709] [2022-12-12 18:44:16,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879170709] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:44:16,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:44:16,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:44:16,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089143542] [2022-12-12 18:44:16,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:44:16,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:44:16,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:44:16,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:44:16,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:44:16,097 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 18:44:16,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 66 transitions, 734 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2022-12-12 18:44:16,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:44:16,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 18:44:16,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:44:16,198 INFO L130 PetriNetUnfolder]: 286/580 cut-off events. [2022-12-12 18:44:16,198 INFO L131 PetriNetUnfolder]: For 1570/1609 co-relation queries the response was YES. [2022-12-12 18:44:16,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 580 events. 286/580 cut-off events. For 1570/1609 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2879 event pairs, 0 based on Foata normal form. 36/487 useless extension candidates. Maximal degree in co-relation 3585. Up to 462 conditions per place. [2022-12-12 18:44:16,200 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 0 selfloop transitions, 0 changer transitions 96/96 dead transitions. [2022-12-12 18:44:16,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 96 transitions, 1258 flow [2022-12-12 18:44:16,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:44:16,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:44:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2022-12-12 18:44:16,201 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2022-12-12 18:44:16,202 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2022-12-12 18:44:16,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 96 transitions, 1258 flow [2022-12-12 18:44:16,203 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 18:44:16,203 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 18:44:16,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2022-12-12 18:44:16,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 18:44:16,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 18:44:16,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 18:44:16,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 18:44:16,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 18:44:16,207 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-12-12 18:44:16,210 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 18:44:16,210 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 18:44:16,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 06:44:16 BasicIcfg [2022-12-12 18:44:16,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 18:44:16,213 INFO L158 Benchmark]: Toolchain (without parser) took 5729.56ms. Allocated memory was 182.5MB in the beginning and 287.3MB in the end (delta: 104.9MB). Free memory was 157.4MB in the beginning and 163.2MB in the end (delta: -5.8MB). Peak memory consumption was 99.4MB. Max. memory is 8.0GB. [2022-12-12 18:44:16,213 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 182.5MB. Free memory is still 159.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 18:44:16,213 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.27ms. Allocated memory is still 182.5MB. Free memory was 157.0MB in the beginning and 133.2MB in the end (delta: 23.7MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-12-12 18:44:16,214 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.34ms. Allocated memory is still 182.5MB. Free memory was 133.2MB in the beginning and 131.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 18:44:16,214 INFO L158 Benchmark]: Boogie Preprocessor took 20.12ms. Allocated memory is still 182.5MB. Free memory was 131.2MB in the beginning and 129.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 18:44:16,214 INFO L158 Benchmark]: RCFGBuilder took 415.25ms. Allocated memory is still 182.5MB. Free memory was 129.7MB in the beginning and 115.9MB in the end (delta: 13.8MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 18:44:16,215 INFO L158 Benchmark]: TraceAbstraction took 4842.68ms. Allocated memory was 182.5MB in the beginning and 287.3MB in the end (delta: 104.9MB). Free memory was 114.8MB in the beginning and 163.2MB in the end (delta: -48.4MB). Peak memory consumption was 57.5MB. Max. memory is 8.0GB. [2022-12-12 18:44:16,216 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 182.5MB. Free memory is still 159.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 413.27ms. Allocated memory is still 182.5MB. Free memory was 157.0MB in the beginning and 133.2MB in the end (delta: 23.7MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.34ms. Allocated memory is still 182.5MB. Free memory was 133.2MB in the beginning and 131.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.12ms. Allocated memory is still 182.5MB. Free memory was 131.2MB in the beginning and 129.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 415.25ms. Allocated memory is still 182.5MB. Free memory was 129.7MB in the beginning and 115.9MB in the end (delta: 13.8MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4842.68ms. Allocated memory was 182.5MB in the beginning and 287.3MB in the end (delta: 104.9MB). Free memory was 114.8MB in the beginning and 163.2MB in the end (delta: -48.4MB). Peak memory consumption was 57.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 80 PlacesBefore, 36 PlacesAfterwards, 71 TransitionsBefore, 27 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 32 ConcurrentYvCompositions, 0 ChoiceCompositions, 54 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1047, independent: 989, independent conditional: 989, independent unconditional: 0, dependent: 58, dependent conditional: 58, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1047, independent: 989, independent conditional: 0, independent unconditional: 989, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1047, independent: 989, independent conditional: 0, independent unconditional: 989, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1047, independent: 989, independent conditional: 0, independent unconditional: 989, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 815, independent: 774, independent conditional: 0, independent unconditional: 774, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 815, independent: 752, independent conditional: 0, independent unconditional: 752, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 63, independent: 22, independent conditional: 0, independent unconditional: 22, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 100, independent: 31, independent conditional: 0, independent unconditional: 31, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1047, independent: 215, independent conditional: 0, independent unconditional: 215, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 815, unknown conditional: 0, unknown unconditional: 815] , Statistics on independence cache: Total cache size (in pairs): 1143, Positive cache size: 1102, Positive conditional cache size: 0, Positive unconditional cache size: 1102, Negative cache size: 41, Negative conditional cache size: 0, Negative unconditional cache size: 41, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 109 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 219 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 219 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 390 IncrementalHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 6 mSDtfsCounter, 390 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=734occurred in iteration=5, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 2297 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 231 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 18:44:16,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...