/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/weaver/popl20-more-min-le-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 20:22:40,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 20:22:40,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 20:22:40,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 20:22:40,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 20:22:40,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 20:22:40,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 20:22:40,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 20:22:40,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 20:22:40,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 20:22:40,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 20:22:40,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 20:22:40,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 20:22:40,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 20:22:40,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 20:22:40,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 20:22:40,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 20:22:40,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 20:22:40,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 20:22:40,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 20:22:40,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 20:22:40,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 20:22:40,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 20:22:40,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 20:22:40,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 20:22:40,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 20:22:40,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 20:22:40,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 20:22:40,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 20:22:40,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 20:22:40,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 20:22:40,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 20:22:40,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 20:22:40,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 20:22:40,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 20:22:40,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 20:22:40,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 20:22:40,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 20:22:40,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 20:22:40,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 20:22:40,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 20:22:40,561 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 20:22:40,583 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 20:22:40,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 20:22:40,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 20:22:40,584 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 20:22:40,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 20:22:40,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 20:22:40,585 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 20:22:40,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 20:22:40,585 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 20:22:40,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 20:22:40,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 20:22:40,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 20:22:40,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 20:22:40,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 20:22:40,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 20:22:40,586 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 20:22:40,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 20:22:40,587 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 20:22:40,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 20:22:40,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 20:22:40,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 20:22:40,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 20:22:40,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 20:22:40,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 20:22:40,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 20:22:40,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 20:22:40,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 20:22:40,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 20:22:40,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 20:22:40,588 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 20:22:40,588 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 20:22:40,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 20:22:40,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 20:22:40,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 20:22:40,923 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 20:22:40,924 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 20:22:40,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2022-12-12 20:22:42,154 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 20:22:42,402 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 20:22:42,402 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2022-12-12 20:22:42,409 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2713ac2/d9eae36cc4b74aa892458bfc7dcadd6b/FLAGf45491a00 [2022-12-12 20:22:42,429 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2713ac2/d9eae36cc4b74aa892458bfc7dcadd6b [2022-12-12 20:22:42,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 20:22:42,433 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 20:22:42,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 20:22:42,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 20:22:42,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 20:22:42,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 08:22:42" (1/1) ... [2022-12-12 20:22:42,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bbbc960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:22:42, skipping insertion in model container [2022-12-12 20:22:42,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 08:22:42" (1/1) ... [2022-12-12 20:22:42,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 20:22:42,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 20:22:42,631 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:22:42,635 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:22:42,639 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:22:42,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:22:42,641 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:22:42,642 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:22:42,659 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2022-12-12 20:22:42,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 20:22:42,681 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 20:22:42,697 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:22:42,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:22:42,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:22:42,703 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:22:42,704 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:22:42,704 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:22:42,719 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2022-12-12 20:22:42,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 20:22:42,739 INFO L208 MainTranslator]: Completed translation [2022-12-12 20:22:42,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:22:42 WrapperNode [2022-12-12 20:22:42,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 20:22:42,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 20:22:42,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 20:22:42,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 20:22:42,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:22:42" (1/1) ... [2022-12-12 20:22:42,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:22:42" (1/1) ... [2022-12-12 20:22:42,791 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2022-12-12 20:22:42,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 20:22:42,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 20:22:42,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 20:22:42,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 20:22:42,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:22:42" (1/1) ... [2022-12-12 20:22:42,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:22:42" (1/1) ... [2022-12-12 20:22:42,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:22:42" (1/1) ... [2022-12-12 20:22:42,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:22:42" (1/1) ... [2022-12-12 20:22:42,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:22:42" (1/1) ... [2022-12-12 20:22:42,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:22:42" (1/1) ... [2022-12-12 20:22:42,819 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:22:42" (1/1) ... [2022-12-12 20:22:42,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:22:42" (1/1) ... [2022-12-12 20:22:42,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 20:22:42,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 20:22:42,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 20:22:42,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 20:22:42,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:22:42" (1/1) ... [2022-12-12 20:22:42,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 20:22:42,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:22:42,856 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 20:22:42,881 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 20:22:42,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 20:22:42,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 20:22:42,900 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 20:22:42,900 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 20:22:42,900 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 20:22:42,900 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 20:22:42,900 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 20:22:42,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 20:22:42,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 20:22:42,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 20:22:42,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 20:22:42,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 20:22:42,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 20:22:42,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 20:22:42,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 20:22:42,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 20:22:42,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 20:22:42,903 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 20:22:42,986 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 20:22:42,988 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 20:22:43,321 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 20:22:43,391 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 20:22:43,391 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-12 20:22:43,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 08:22:43 BoogieIcfgContainer [2022-12-12 20:22:43,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 20:22:43,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 20:22:43,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 20:22:43,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 20:22:43,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 08:22:42" (1/3) ... [2022-12-12 20:22:43,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0bfb10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 08:22:43, skipping insertion in model container [2022-12-12 20:22:43,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:22:42" (2/3) ... [2022-12-12 20:22:43,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0bfb10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 08:22:43, skipping insertion in model container [2022-12-12 20:22:43,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 08:22:43" (3/3) ... [2022-12-12 20:22:43,409 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2022-12-12 20:22:43,427 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 20:22:43,427 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 20:22:43,427 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 20:22:43,524 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 20:22:43,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 138 transitions, 300 flow [2022-12-12 20:22:43,630 INFO L130 PetriNetUnfolder]: 10/135 cut-off events. [2022-12-12 20:22:43,630 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 20:22:43,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 135 events. 10/135 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2022-12-12 20:22:43,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 138 transitions, 300 flow [2022-12-12 20:22:43,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 125 transitions, 268 flow [2022-12-12 20:22:43,642 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 20:22:43,660 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 125 transitions, 268 flow [2022-12-12 20:22:43,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 125 transitions, 268 flow [2022-12-12 20:22:43,694 INFO L130 PetriNetUnfolder]: 10/125 cut-off events. [2022-12-12 20:22:43,694 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 20:22:43,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 10/125 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2022-12-12 20:22:43,697 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 125 transitions, 268 flow [2022-12-12 20:22:43,697 INFO L226 LiptonReduction]: Number of co-enabled transitions 914 [2022-12-12 20:22:48,270 INFO L241 LiptonReduction]: Total number of compositions: 103 [2022-12-12 20:22:48,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 20:22:48,289 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;@26e29bf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 20:22:48,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 20:22:48,296 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2022-12-12 20:22:48,297 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 20:22:48,297 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:22:48,297 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:22:48,298 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 20:22:48,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:22:48,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1721174170, now seen corresponding path program 1 times [2022-12-12 20:22:48,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:22:48,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802817609] [2022-12-12 20:22:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:22:48,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:22:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:22:48,757 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 20:22:48,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:22:48,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802817609] [2022-12-12 20:22:48,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802817609] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:22:48,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:22:48,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 20:22:48,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668662098] [2022-12-12 20:22:48,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:22:48,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 20:22:48,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:22:48,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 20:22:48,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 20:22:48,790 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 22 [2022-12-12 20:22:48,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 20:22:48,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:22:48,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 22 [2022-12-12 20:22:48,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:22:48,933 INFO L130 PetriNetUnfolder]: 202/304 cut-off events. [2022-12-12 20:22:48,933 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-12-12 20:22:48,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 304 events. 202/304 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 932 event pairs, 92 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 533. Up to 231 conditions per place. [2022-12-12 20:22:48,939 INFO L137 encePairwiseOnDemand]: 18/22 looper letters, 27 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2022-12-12 20:22:48,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 146 flow [2022-12-12 20:22:48,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 20:22:48,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 20:22:48,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 35 transitions. [2022-12-12 20:22:48,950 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2022-12-12 20:22:48,953 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2022-12-12 20:22:48,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 31 transitions, 146 flow [2022-12-12 20:22:48,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 31 transitions, 146 flow [2022-12-12 20:22:48,958 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 146 flow [2022-12-12 20:22:48,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 20:22:48,958 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:22:48,959 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:22:48,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 20:22:48,960 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 20:22:48,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:22:48,968 INFO L85 PathProgramCache]: Analyzing trace with hash 267479801, now seen corresponding path program 1 times [2022-12-12 20:22:48,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:22:48,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237309118] [2022-12-12 20:22:48,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:22:48,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:22:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:22:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:22:49,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:22:49,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237309118] [2022-12-12 20:22:49,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237309118] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:22:49,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:22:49,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 20:22:49,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064748497] [2022-12-12 20:22:49,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:22:49,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 20:22:49,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:22:49,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 20:22:49,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 20:22:49,086 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 22 [2022-12-12 20:22:49,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 20:22:49,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:22:49,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 22 [2022-12-12 20:22:49,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:22:49,162 INFO L130 PetriNetUnfolder]: 202/305 cut-off events. [2022-12-12 20:22:49,163 INFO L131 PetriNetUnfolder]: For 24/26 co-relation queries the response was YES. [2022-12-12 20:22:49,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 305 events. 202/305 cut-off events. For 24/26 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 944 event pairs, 92 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 784. Up to 304 conditions per place. [2022-12-12 20:22:49,165 INFO L137 encePairwiseOnDemand]: 19/22 looper letters, 29 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2022-12-12 20:22:49,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 212 flow [2022-12-12 20:22:49,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 20:22:49,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 20:22:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 26 transitions. [2022-12-12 20:22:49,167 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2022-12-12 20:22:49,168 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2022-12-12 20:22:49,168 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 32 transitions, 212 flow [2022-12-12 20:22:49,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 32 transitions, 212 flow [2022-12-12 20:22:49,170 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 212 flow [2022-12-12 20:22:49,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 20:22:49,170 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:22:49,171 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:22:49,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 20:22:49,171 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 20:22:49,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:22:49,172 INFO L85 PathProgramCache]: Analyzing trace with hash -424310356, now seen corresponding path program 1 times [2022-12-12 20:22:49,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:22:49,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326048126] [2022-12-12 20:22:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:22:49,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:22:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:22:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:22:49,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:22:49,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326048126] [2022-12-12 20:22:49,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326048126] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:22:49,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754820312] [2022-12-12 20:22:49,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:22:49,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:22:49,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:22:49,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:22:49,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 20:22:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:22:49,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 20:22:49,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:22:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:22:49,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:22:49,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:22:49,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754820312] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 20:22:49,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 20:22:49,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-12-12 20:22:49,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469552000] [2022-12-12 20:22:49,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:22:49,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 20:22:49,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:22:49,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 20:22:49,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-12 20:22:49,523 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 22 [2022-12-12 20:22:49,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 20:22:49,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:22:49,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 22 [2022-12-12 20:22:49,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:22:49,645 INFO L130 PetriNetUnfolder]: 232/360 cut-off events. [2022-12-12 20:22:49,645 INFO L131 PetriNetUnfolder]: For 124/130 co-relation queries the response was YES. [2022-12-12 20:22:49,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1440 conditions, 360 events. 232/360 cut-off events. For 124/130 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1110 event pairs, 71 based on Foata normal form. 6/311 useless extension candidates. Maximal degree in co-relation 1212. Up to 340 conditions per place. [2022-12-12 20:22:49,649 INFO L137 encePairwiseOnDemand]: 17/22 looper letters, 41 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2022-12-12 20:22:49,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 403 flow [2022-12-12 20:22:49,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:22:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:22:49,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 37 transitions. [2022-12-12 20:22:49,650 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2022-12-12 20:22:49,651 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2022-12-12 20:22:49,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 47 transitions, 403 flow [2022-12-12 20:22:49,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 47 transitions, 403 flow [2022-12-12 20:22:49,654 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 47 transitions, 403 flow [2022-12-12 20:22:49,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 20:22:49,654 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:22:49,654 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:22:49,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 20:22:49,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:22:49,861 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 20:22:49,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:22:49,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2139733235, now seen corresponding path program 1 times [2022-12-12 20:22:49,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:22:49,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568671967] [2022-12-12 20:22:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:22:49,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:22:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:22:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:22:50,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:22:50,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568671967] [2022-12-12 20:22:50,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568671967] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:22:50,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998017560] [2022-12-12 20:22:50,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:22:50,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:22:50,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:22:50,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:22:50,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 20:22:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:22:50,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 20:22:50,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:22:50,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-12 20:22:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 20:22:50,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 20:22:50,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998017560] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:22:50,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 20:22:50,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-12 20:22:50,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386669198] [2022-12-12 20:22:50,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:22:50,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 20:22:50,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:22:50,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 20:22:50,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-12 20:22:50,318 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 22 [2022-12-12 20:22:50,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 47 transitions, 403 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 20:22:50,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:22:50,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 22 [2022-12-12 20:22:50,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:22:50,395 INFO L130 PetriNetUnfolder]: 232/359 cut-off events. [2022-12-12 20:22:50,395 INFO L131 PetriNetUnfolder]: For 302/308 co-relation queries the response was YES. [2022-12-12 20:22:50,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 359 events. 232/359 cut-off events. For 302/308 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1139 event pairs, 34 based on Foata normal form. 7/311 useless extension candidates. Maximal degree in co-relation 1481. Up to 339 conditions per place. [2022-12-12 20:22:50,400 INFO L137 encePairwiseOnDemand]: 19/22 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2022-12-12 20:22:50,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 68 transitions, 712 flow [2022-12-12 20:22:50,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 20:22:50,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 20:22:50,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 37 transitions. [2022-12-12 20:22:50,409 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2022-12-12 20:22:50,410 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2022-12-12 20:22:50,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 68 transitions, 712 flow [2022-12-12 20:22:50,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 20:22:50,411 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 20:22:50,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 20:22:50,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 20:22:50,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 20:22:50,418 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 20:22:50,419 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 20:22:50,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 20:22:50,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-12 20:22:50,624 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-12 20:22:50,627 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 20:22:50,628 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 20:22:50,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 08:22:50 BasicIcfg [2022-12-12 20:22:50,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 20:22:50,631 INFO L158 Benchmark]: Toolchain (without parser) took 8197.75ms. Allocated memory was 187.7MB in the beginning and 260.0MB in the end (delta: 72.4MB). Free memory was 164.5MB in the beginning and 134.5MB in the end (delta: 30.0MB). Peak memory consumption was 103.2MB. Max. memory is 8.0GB. [2022-12-12 20:22:50,635 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 187.7MB. Free memory is still 164.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 20:22:50,637 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.34ms. Allocated memory is still 187.7MB. Free memory was 164.5MB in the beginning and 152.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 20:22:50,638 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.99ms. Allocated memory is still 187.7MB. Free memory was 152.2MB in the beginning and 150.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 20:22:50,638 INFO L158 Benchmark]: Boogie Preprocessor took 28.65ms. Allocated memory is still 187.7MB. Free memory was 150.7MB in the beginning and 149.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 20:22:50,638 INFO L158 Benchmark]: RCFGBuilder took 571.09ms. Allocated memory is still 187.7MB. Free memory was 149.1MB in the beginning and 130.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-12 20:22:50,639 INFO L158 Benchmark]: TraceAbstraction took 7228.96ms. Allocated memory was 187.7MB in the beginning and 260.0MB in the end (delta: 72.4MB). Free memory was 128.6MB in the beginning and 134.5MB in the end (delta: -5.9MB). Peak memory consumption was 67.5MB. Max. memory is 8.0GB. [2022-12-12 20:22:50,640 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 187.7MB. Free memory is still 164.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 304.34ms. Allocated memory is still 187.7MB. Free memory was 164.5MB in the beginning and 152.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.99ms. Allocated memory is still 187.7MB. Free memory was 152.2MB in the beginning and 150.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.65ms. Allocated memory is still 187.7MB. Free memory was 150.7MB in the beginning and 149.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 571.09ms. Allocated memory is still 187.7MB. Free memory was 149.1MB in the beginning and 130.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 7228.96ms. Allocated memory was 187.7MB in the beginning and 260.0MB in the end (delta: 72.4MB). Free memory was 128.6MB in the beginning and 134.5MB in the end (delta: -5.9MB). Peak memory consumption was 67.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 125 PlacesBefore, 29 PlacesAfterwards, 125 TransitionsBefore, 22 TransitionsAfterwards, 914 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 70 TrivialYvCompositions, 26 ConcurrentYvCompositions, 7 ChoiceCompositions, 103 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 477, independent: 474, independent conditional: 474, independent unconditional: 0, dependent: 3, dependent conditional: 3, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 477, independent: 474, independent conditional: 0, independent unconditional: 474, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 477, independent: 474, independent conditional: 0, independent unconditional: 474, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 477, independent: 474, independent conditional: 0, independent unconditional: 474, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 477, independent: 474, independent conditional: 0, independent unconditional: 474, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 477, independent: 474, independent conditional: 0, independent unconditional: 474, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 8, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 477, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 477, unknown conditional: 0, unknown unconditional: 477] , Statistics on independence cache: Total cache size (in pairs): 744, Positive cache size: 741, Positive conditional cache size: 0, Positive unconditional cache size: 741, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 98]: 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, 154 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: 7.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 79 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 202 IncrementalHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 3 mSDtfsCounter, 202 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=403occurred in iteration=3, 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, 4 MinimizatonAttempts, 712 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 374 SizeOfPredicates, 8 NumberOfNonLiveVariables, 438 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 10/13 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 20:22:50,656 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...