/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-atomic/time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 18:29:43,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 18:29:43,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 18:29:43,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 18:29:43,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 18:29:43,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 18:29:43,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 18:29:43,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 18:29:43,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 18:29:43,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 18:29:43,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 18:29:43,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 18:29:43,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 18:29:43,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 18:29:43,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 18:29:43,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 18:29:43,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 18:29:43,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 18:29:43,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 18:29:43,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 18:29:43,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 18:29:43,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 18:29:43,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 18:29:43,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 18:29:43,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 18:29:43,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 18:29:43,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 18:29:43,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 18:29:43,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 18:29:43,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 18:29:43,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 18:29:43,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 18:29:43,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 18:29:43,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 18:29:43,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 18:29:43,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 18:29:43,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 18:29:43,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 18:29:43,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 18:29:43,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 18:29:43,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 18:29:43,784 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 18:29:43,817 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 18:29:43,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 18:29:43,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 18:29:43,819 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 18:29:43,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 18:29:43,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 18:29:43,820 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 18:29:43,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 18:29:43,820 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 18:29:43,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 18:29:43,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 18:29:43,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 18:29:43,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 18:29:43,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 18:29:43,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 18:29:43,822 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 18:29:43,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 18:29:43,822 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 18:29:43,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 18:29:43,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 18:29:43,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 18:29:43,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 18:29:43,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 18:29:43,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:29:43,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 18:29:43,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 18:29:43,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 18:29:43,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 18:29:43,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 18:29:43,823 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 18:29:43,823 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 18:29:44,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 18:29:44,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 18:29:44,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 18:29:44,112 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 18:29:44,112 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 18:29:44,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2022-12-12 18:29:45,057 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 18:29:45,301 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 18:29:45,301 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2022-12-12 18:29:45,314 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e063a7b/008470f6f8f14528a3c55b19ac660c1a/FLAG04fbd59d7 [2022-12-12 18:29:45,329 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e063a7b/008470f6f8f14528a3c55b19ac660c1a [2022-12-12 18:29:45,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 18:29:45,334 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 18:29:45,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 18:29:45,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 18:29:45,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 18:29:45,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:29:45" (1/1) ... [2022-12-12 18:29:45,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494a3ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:45, skipping insertion in model container [2022-12-12 18:29:45,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:29:45" (1/1) ... [2022-12-12 18:29:45,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 18:29:45,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 18:29:45,628 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/time_var_mutex.i[30247,30260] [2022-12-12 18:29:45,632 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/time_var_mutex.i[30452,30465] [2022-12-12 18:29:45,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:29:45,651 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 18:29:45,682 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/time_var_mutex.i[30247,30260] [2022-12-12 18:29:45,683 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/time_var_mutex.i[30452,30465] [2022-12-12 18:29:45,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:29:45,726 INFO L208 MainTranslator]: Completed translation [2022-12-12 18:29:45,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:45 WrapperNode [2022-12-12 18:29:45,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 18:29:45,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 18:29:45,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 18:29:45,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 18:29:45,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:45" (1/1) ... [2022-12-12 18:29:45,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:45" (1/1) ... [2022-12-12 18:29:45,758 INFO L138 Inliner]: procedures = 169, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2022-12-12 18:29:45,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 18:29:45,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 18:29:45,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 18:29:45,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 18:29:45,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:45" (1/1) ... [2022-12-12 18:29:45,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:45" (1/1) ... [2022-12-12 18:29:45,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:45" (1/1) ... [2022-12-12 18:29:45,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:45" (1/1) ... [2022-12-12 18:29:45,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:45" (1/1) ... [2022-12-12 18:29:45,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:45" (1/1) ... [2022-12-12 18:29:45,773 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:45" (1/1) ... [2022-12-12 18:29:45,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:45" (1/1) ... [2022-12-12 18:29:45,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 18:29:45,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 18:29:45,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 18:29:45,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 18:29:45,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:45" (1/1) ... [2022-12-12 18:29:45,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:29:45,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:29:45,802 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 18:29:45,804 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 18:29:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2022-12-12 18:29:45,825 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2022-12-12 18:29:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 18:29:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2022-12-12 18:29:45,825 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2022-12-12 18:29:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 18:29:45,826 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 18:29:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 18:29:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 18:29:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 18:29:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 18:29:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 18:29:45,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 18:29:45,829 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 18:29:45,973 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 18:29:45,979 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 18:29:46,126 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 18:29:46,131 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 18:29:46,131 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 18:29:46,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:29:46 BoogieIcfgContainer [2022-12-12 18:29:46,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 18:29:46,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 18:29:46,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 18:29:46,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 18:29:46,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 06:29:45" (1/3) ... [2022-12-12 18:29:46,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7197df27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:29:46, skipping insertion in model container [2022-12-12 18:29:46,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:45" (2/3) ... [2022-12-12 18:29:46,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7197df27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:29:46, skipping insertion in model container [2022-12-12 18:29:46,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:29:46" (3/3) ... [2022-12-12 18:29:46,138 INFO L112 eAbstractionObserver]: Analyzing ICFG time_var_mutex.i [2022-12-12 18:29:46,156 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 18:29:46,156 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-12 18:29:46,157 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 18:29:46,210 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 18:29:46,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 96 transitions, 208 flow [2022-12-12 18:29:46,337 INFO L130 PetriNetUnfolder]: 5/94 cut-off events. [2022-12-12 18:29:46,338 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:29:46,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 94 events. 5/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 94 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2022-12-12 18:29:46,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 96 transitions, 208 flow [2022-12-12 18:29:46,344 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 85 transitions, 179 flow [2022-12-12 18:29:46,346 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 18:29:46,357 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 85 transitions, 179 flow [2022-12-12 18:29:46,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 85 transitions, 179 flow [2022-12-12 18:29:46,375 INFO L130 PetriNetUnfolder]: 5/85 cut-off events. [2022-12-12 18:29:46,375 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:29:46,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 85 events. 5/85 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 95 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2022-12-12 18:29:46,377 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 85 transitions, 179 flow [2022-12-12 18:29:46,377 INFO L226 LiptonReduction]: Number of co-enabled transitions 1042 [2022-12-12 18:29:49,811 INFO L241 LiptonReduction]: Total number of compositions: 67 [2022-12-12 18:29:49,822 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 18:29:49,826 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;@5cf1f0b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 18:29:49,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-12 18:29:49,830 INFO L130 PetriNetUnfolder]: 1/22 cut-off events. [2022-12-12 18:29:49,830 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:29:49,830 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:49,831 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-12 18:29:49,831 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 18:29:49,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:49,835 INFO L85 PathProgramCache]: Analyzing trace with hash 346632985, now seen corresponding path program 1 times [2022-12-12 18:29:49,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:49,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387066526] [2022-12-12 18:29:49,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:49,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:50,010 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 18:29:50,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:50,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387066526] [2022-12-12 18:29:50,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387066526] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:29:50,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:29:50,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:29:50,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317651697] [2022-12-12 18:29:50,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:29:50,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:29:50,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:50,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:29:50,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:29:50,036 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2022-12-12 18:29:50,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 18:29:50,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:50,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2022-12-12 18:29:50,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:50,180 INFO L130 PetriNetUnfolder]: 483/1030 cut-off events. [2022-12-12 18:29:50,180 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-12-12 18:29:50,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 1030 events. 483/1030 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6117 event pairs, 266 based on Foata normal form. 0/714 useless extension candidates. Maximal degree in co-relation 1795. Up to 491 conditions per place. [2022-12-12 18:29:50,186 INFO L137 encePairwiseOnDemand]: 40/47 looper letters, 42 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2022-12-12 18:29:50,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 214 flow [2022-12-12 18:29:50,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:29:50,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:29:50,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2022-12-12 18:29:50,196 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6312056737588653 [2022-12-12 18:29:50,199 INFO L295 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2022-12-12 18:29:50,200 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 57 transitions, 214 flow [2022-12-12 18:29:50,204 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 57 transitions, 214 flow [2022-12-12 18:29:50,205 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 57 transitions, 214 flow [2022-12-12 18:29:50,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 18:29:50,206 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:50,206 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:50,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 18:29:50,206 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 18:29:50,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:50,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1900548389, now seen corresponding path program 1 times [2022-12-12 18:29:50,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:50,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953897169] [2022-12-12 18:29:50,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:50,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:50,275 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 18:29:50,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:50,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953897169] [2022-12-12 18:29:50,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953897169] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:29:50,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:29:50,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:29:50,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768157118] [2022-12-12 18:29:50,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:29:50,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:29:50,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:50,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:29:50,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:29:50,278 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2022-12-12 18:29:50,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 57 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 18:29:50,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:50,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2022-12-12 18:29:50,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:50,392 INFO L130 PetriNetUnfolder]: 665/1294 cut-off events. [2022-12-12 18:29:50,392 INFO L131 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2022-12-12 18:29:50,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3529 conditions, 1294 events. 665/1294 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7329 event pairs, 291 based on Foata normal form. 82/976 useless extension candidates. Maximal degree in co-relation 3338. Up to 717 conditions per place. [2022-12-12 18:29:50,397 INFO L137 encePairwiseOnDemand]: 40/47 looper letters, 55 selfloop transitions, 5 changer transitions 7/76 dead transitions. [2022-12-12 18:29:50,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 76 transitions, 426 flow [2022-12-12 18:29:50,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:29:50,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:29:50,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2022-12-12 18:29:50,398 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5815602836879432 [2022-12-12 18:29:50,399 INFO L295 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2022-12-12 18:29:50,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 76 transitions, 426 flow [2022-12-12 18:29:50,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 69 transitions, 383 flow [2022-12-12 18:29:50,403 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 69 transitions, 383 flow [2022-12-12 18:29:50,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 18:29:50,403 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:50,403 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:50,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 18:29:50,403 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 18:29:50,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:50,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1298156403, now seen corresponding path program 1 times [2022-12-12 18:29:50,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:50,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142815750] [2022-12-12 18:29:50,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:50,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:50,429 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 18:29:50,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:50,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142815750] [2022-12-12 18:29:50,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142815750] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:29:50,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:29:50,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:29:50,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74581207] [2022-12-12 18:29:50,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:29:50,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:29:50,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:50,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:29:50,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:29:50,431 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2022-12-12 18:29:50,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 69 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 18:29:50,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:50,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2022-12-12 18:29:50,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:50,543 INFO L130 PetriNetUnfolder]: 386/818 cut-off events. [2022-12-12 18:29:50,543 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2022-12-12 18:29:50,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2925 conditions, 818 events. 386/818 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4480 event pairs, 159 based on Foata normal form. 70/686 useless extension candidates. Maximal degree in co-relation 2715. Up to 438 conditions per place. [2022-12-12 18:29:50,546 INFO L137 encePairwiseOnDemand]: 41/47 looper letters, 29 selfloop transitions, 4 changer transitions 26/67 dead transitions. [2022-12-12 18:29:50,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 67 transitions, 489 flow [2022-12-12 18:29:50,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:29:50,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:29:50,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2022-12-12 18:29:50,548 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2022-12-12 18:29:50,549 INFO L295 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2022-12-12 18:29:50,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 67 transitions, 489 flow [2022-12-12 18:29:50,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 41 transitions, 289 flow [2022-12-12 18:29:50,552 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 289 flow [2022-12-12 18:29:50,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 18:29:50,553 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:50,553 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:50,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 18:29:50,553 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 18:29:50,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:50,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1590452600, now seen corresponding path program 1 times [2022-12-12 18:29:50,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:50,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759004335] [2022-12-12 18:29:50,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:50,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:50,628 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 18:29:50,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:50,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759004335] [2022-12-12 18:29:50,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759004335] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:29:50,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:29:50,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:29:50,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312071238] [2022-12-12 18:29:50,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:29:50,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:29:50,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:50,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:29:50,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:29:50,632 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2022-12-12 18:29:50,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 18:29:50,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:50,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2022-12-12 18:29:50,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:50,681 INFO L130 PetriNetUnfolder]: 127/341 cut-off events. [2022-12-12 18:29:50,681 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2022-12-12 18:29:50,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 341 events. 127/341 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1709 event pairs, 49 based on Foata normal form. 17/301 useless extension candidates. Maximal degree in co-relation 1337. Up to 205 conditions per place. [2022-12-12 18:29:50,683 INFO L137 encePairwiseOnDemand]: 45/47 looper letters, 25 selfloop transitions, 1 changer transitions 6/43 dead transitions. [2022-12-12 18:29:50,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 372 flow [2022-12-12 18:29:50,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:29:50,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:29:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2022-12-12 18:29:50,686 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45390070921985815 [2022-12-12 18:29:50,687 INFO L295 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2022-12-12 18:29:50,687 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 43 transitions, 372 flow [2022-12-12 18:29:50,689 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 37 transitions, 303 flow [2022-12-12 18:29:50,689 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 303 flow [2022-12-12 18:29:50,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 18:29:50,689 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:50,689 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:50,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 18:29:50,689 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 18:29:50,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:50,690 INFO L85 PathProgramCache]: Analyzing trace with hash -426818031, now seen corresponding path program 1 times [2022-12-12 18:29:50,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:50,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149798388] [2022-12-12 18:29:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:50,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:50,766 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 18:29:50,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:50,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149798388] [2022-12-12 18:29:50,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149798388] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:29:50,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:29:50,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 18:29:50,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985988740] [2022-12-12 18:29:50,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:29:50,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:29:50,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:50,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:29:50,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:29:50,768 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 47 [2022-12-12 18:29:50,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 18:29:50,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:50,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 47 [2022-12-12 18:29:50,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:50,811 INFO L130 PetriNetUnfolder]: 36/112 cut-off events. [2022-12-12 18:29:50,812 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-12-12 18:29:50,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 112 events. 36/112 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 408 event pairs, 4 based on Foata normal form. 9/107 useless extension candidates. Maximal degree in co-relation 536. Up to 67 conditions per place. [2022-12-12 18:29:50,814 INFO L137 encePairwiseOnDemand]: 40/47 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2022-12-12 18:29:50,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 382 flow [2022-12-12 18:29:50,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:29:50,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:29:50,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2022-12-12 18:29:50,819 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2765957446808511 [2022-12-12 18:29:50,821 INFO L295 CegarLoopForPetriNet]: 51 programPoint places, -9 predicate places. [2022-12-12 18:29:50,822 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 37 transitions, 382 flow [2022-12-12 18:29:50,822 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 18:29:50,822 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 18:29:50,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 18:29:50,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-12 18:29:50,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-12-12 18:29:50,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-12-12 18:29:50,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-12-12 18:29:50,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-12-12 18:29:50,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-12-12 18:29:50,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 18:29:50,829 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-12 18:29:50,832 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 18:29:50,832 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 18:29:50,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 06:29:50 BasicIcfg [2022-12-12 18:29:50,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 18:29:50,836 INFO L158 Benchmark]: Toolchain (without parser) took 5501.22ms. Allocated memory was 185.6MB in the beginning and 292.6MB in the end (delta: 107.0MB). Free memory was 158.6MB in the beginning and 180.6MB in the end (delta: -22.0MB). Peak memory consumption was 86.2MB. Max. memory is 8.0GB. [2022-12-12 18:29:50,836 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 185.6MB. Free memory is still 161.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 18:29:50,839 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.73ms. Allocated memory is still 185.6MB. Free memory was 158.3MB in the beginning and 138.7MB in the end (delta: 19.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-12 18:29:50,841 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.83ms. Allocated memory is still 185.6MB. Free memory was 138.7MB in the beginning and 136.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 18:29:50,841 INFO L158 Benchmark]: Boogie Preprocessor took 16.34ms. Allocated memory is still 185.6MB. Free memory was 136.6MB in the beginning and 135.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 18:29:50,841 INFO L158 Benchmark]: RCFGBuilder took 356.71ms. Allocated memory is still 185.6MB. Free memory was 135.3MB in the beginning and 121.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-12 18:29:50,841 INFO L158 Benchmark]: TraceAbstraction took 4700.21ms. Allocated memory was 185.6MB in the beginning and 292.6MB in the end (delta: 107.0MB). Free memory was 120.2MB in the beginning and 180.6MB in the end (delta: -60.4MB). Peak memory consumption was 47.4MB. Max. memory is 8.0GB. [2022-12-12 18:29:50,843 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 185.6MB. Free memory is still 161.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 392.73ms. Allocated memory is still 185.6MB. Free memory was 158.3MB in the beginning and 138.7MB in the end (delta: 19.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.83ms. Allocated memory is still 185.6MB. Free memory was 138.7MB in the beginning and 136.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.34ms. Allocated memory is still 185.6MB. Free memory was 136.6MB in the beginning and 135.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 356.71ms. Allocated memory is still 185.6MB. Free memory was 135.3MB in the beginning and 121.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 4700.21ms. Allocated memory was 185.6MB in the beginning and 292.6MB in the end (delta: 107.0MB). Free memory was 120.2MB in the beginning and 180.6MB in the end (delta: -60.4MB). Peak memory consumption was 47.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 87 PlacesBefore, 51 PlacesAfterwards, 85 TransitionsBefore, 47 TransitionsAfterwards, 1042 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 37 TrivialYvCompositions, 21 ConcurrentYvCompositions, 2 ChoiceCompositions, 67 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1795, independent: 1704, independent conditional: 1704, independent unconditional: 0, dependent: 91, dependent conditional: 91, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1795, independent: 1704, independent conditional: 0, independent unconditional: 1704, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1795, independent: 1704, independent conditional: 0, independent unconditional: 1704, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1795, independent: 1704, independent conditional: 0, independent unconditional: 1704, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 883, independent: 854, independent conditional: 0, independent unconditional: 854, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 883, independent: 805, independent conditional: 0, independent unconditional: 805, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 78, independent: 49, independent conditional: 0, independent unconditional: 49, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 91, independent: 44, independent conditional: 0, independent unconditional: 44, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1795, independent: 850, independent conditional: 0, independent unconditional: 850, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 883, unknown conditional: 0, unknown unconditional: 883] , Statistics on independence cache: Total cache size (in pairs): 1557, Positive cache size: 1528, Positive conditional cache size: 0, Positive unconditional cache size: 1528, Negative cache size: 29, Negative conditional cache size: 0, Negative unconditional cache size: 29, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 702]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 710]: 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, 125 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: 4.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 95 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 246 IncrementalHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 10 mSDtfsCounter, 246 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=383occurred in iteration=2, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 694 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 63 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! [2022-12-12 18:29:50,858 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...