/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 12:20:10,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 12:20:10,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 12:20:10,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 12:20:10,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 12:20:10,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 12:20:10,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 12:20:10,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 12:20:10,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 12:20:10,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 12:20:10,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 12:20:10,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 12:20:10,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 12:20:10,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 12:20:10,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 12:20:10,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 12:20:10,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 12:20:10,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 12:20:10,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 12:20:10,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 12:20:10,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 12:20:10,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 12:20:10,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 12:20:10,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 12:20:10,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 12:20:10,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 12:20:10,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 12:20:10,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 12:20:10,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 12:20:10,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 12:20:10,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 12:20:10,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 12:20:10,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 12:20:10,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 12:20:10,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 12:20:10,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 12:20:10,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 12:20:10,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 12:20:10,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 12:20:10,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 12:20:10,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 12:20:10,589 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-12 12:20:10,618 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 12:20:10,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 12:20:10,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 12:20:10,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 12:20:10,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 12:20:10,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 12:20:10,621 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 12:20:10,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 12:20:10,621 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 12:20:10,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 12:20:10,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 12:20:10,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 12:20:10,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 12:20:10,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 12:20:10,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 12:20:10,622 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 12:20:10,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 12:20:10,622 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 12:20:10,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 12:20:10,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 12:20:10,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 12:20:10,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 12:20:10,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 12:20:10,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:20:10,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 12:20:10,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 12:20:10,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 12:20:10,624 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 12:20:10,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 12:20:10,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 12:20:10,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 12:20:10,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 12:20:10,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 12:20:10,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 12:20:10,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 12:20:10,875 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 12:20:10,875 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 12:20:10,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2022-12-12 12:20:11,862 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 12:20:12,115 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 12:20:12,115 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2022-12-12 12:20:12,137 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/266f378e0/64e9644060d743aa8d57c84ebc62b781/FLAGa23e57b9a [2022-12-12 12:20:12,154 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/266f378e0/64e9644060d743aa8d57c84ebc62b781 [2022-12-12 12:20:12,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 12:20:12,157 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 12:20:12,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 12:20:12,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 12:20:12,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 12:20:12,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:20:12" (1/1) ... [2022-12-12 12:20:12,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b82482e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:12, skipping insertion in model container [2022-12-12 12:20:12,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:20:12" (1/1) ... [2022-12-12 12:20:12,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 12:20:12,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 12:20:12,314 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2022-12-12 12:20:12,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:20:12,451 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 12:20:12,461 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2022-12-12 12:20:12,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:20:12,541 INFO L208 MainTranslator]: Completed translation [2022-12-12 12:20:12,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:12 WrapperNode [2022-12-12 12:20:12,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 12:20:12,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 12:20:12,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 12:20:12,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 12:20:12,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:12" (1/1) ... [2022-12-12 12:20:12,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:12" (1/1) ... [2022-12-12 12:20:12,588 INFO L138 Inliner]: procedures = 163, calls = 52, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 104 [2022-12-12 12:20:12,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 12:20:12,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 12:20:12,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 12:20:12,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 12:20:12,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:12" (1/1) ... [2022-12-12 12:20:12,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:12" (1/1) ... [2022-12-12 12:20:12,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:12" (1/1) ... [2022-12-12 12:20:12,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:12" (1/1) ... [2022-12-12 12:20:12,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:12" (1/1) ... [2022-12-12 12:20:12,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:12" (1/1) ... [2022-12-12 12:20:12,614 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:12" (1/1) ... [2022-12-12 12:20:12,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:12" (1/1) ... [2022-12-12 12:20:12,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 12:20:12,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 12:20:12,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 12:20:12,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 12:20:12,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:12" (1/1) ... [2022-12-12 12:20:12,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:20:12,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:20:12,651 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 12:20:12,668 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 12:20:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 12:20:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-12 12:20:12,679 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-12 12:20:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 12:20:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 12:20:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 12:20:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 12:20:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-12 12:20:12,679 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-12 12:20:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 12:20:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 12:20:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 12:20:12,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 12:20:12,681 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 12:20:12,766 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 12:20:12,767 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 12:20:12,953 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 12:20:12,958 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 12:20:12,959 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 12:20:12,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:20:12 BoogieIcfgContainer [2022-12-12 12:20:12,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 12:20:12,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 12:20:12,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 12:20:12,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 12:20:12,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 12:20:12" (1/3) ... [2022-12-12 12:20:12,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e95c13b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:20:12, skipping insertion in model container [2022-12-12 12:20:12,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:12" (2/3) ... [2022-12-12 12:20:12,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e95c13b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:20:12, skipping insertion in model container [2022-12-12 12:20:12,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:20:12" (3/3) ... [2022-12-12 12:20:12,966 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2022-12-12 12:20:12,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 12:20:12,979 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-12 12:20:12,979 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 12:20:13,060 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 12:20:13,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 147 transitions, 310 flow [2022-12-12 12:20:13,179 INFO L130 PetriNetUnfolder]: 4/145 cut-off events. [2022-12-12 12:20:13,180 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 12:20:13,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 145 events. 4/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 136 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2022-12-12 12:20:13,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 147 transitions, 310 flow [2022-12-12 12:20:13,188 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 127 transitions, 260 flow [2022-12-12 12:20:13,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 12:20:13,201 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;@257be5dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 12:20:13,201 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-12 12:20:13,218 INFO L130 PetriNetUnfolder]: 0/82 cut-off events. [2022-12-12 12:20:13,218 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 12:20:13,219 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:20:13,219 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:20:13,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-12 12:20:13,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:20:13,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1480730660, now seen corresponding path program 1 times [2022-12-12 12:20:13,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:20:13,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599580384] [2022-12-12 12:20:13,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:20:13,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:20:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:20:13,723 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 12:20:13,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:20:13,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599580384] [2022-12-12 12:20:13,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599580384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:20:13,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:20:13,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 12:20:13,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449444631] [2022-12-12 12:20:13,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:20:13,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 12:20:13,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:20:13,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 12:20:13,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 12:20:13,765 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 147 [2022-12-12 12:20:13,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 127 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 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 12:20:13,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:20:13,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 147 [2022-12-12 12:20:13,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:20:14,006 INFO L130 PetriNetUnfolder]: 93/522 cut-off events. [2022-12-12 12:20:14,007 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-12 12:20:14,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 522 events. 93/522 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2629 event pairs, 24 based on Foata normal form. 16/525 useless extension candidates. Maximal degree in co-relation 718. Up to 78 conditions per place. [2022-12-12 12:20:14,015 INFO L137 encePairwiseOnDemand]: 126/147 looper letters, 37 selfloop transitions, 23 changer transitions 5/160 dead transitions. [2022-12-12 12:20:14,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 160 transitions, 459 flow [2022-12-12 12:20:14,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 12:20:14,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 12:20:14,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1065 transitions. [2022-12-12 12:20:14,033 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8049886621315193 [2022-12-12 12:20:14,036 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 5 predicate places. [2022-12-12 12:20:14,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 160 transitions, 459 flow [2022-12-12 12:20:14,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 160 transitions, 454 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-12 12:20:14,046 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 160 transitions, 454 flow [2022-12-12 12:20:14,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 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 12:20:14,047 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:20:14,048 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:20:14,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 12:20:14,048 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-12 12:20:14,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:20:14,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1706799489, now seen corresponding path program 1 times [2022-12-12 12:20:14,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:20:14,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347846010] [2022-12-12 12:20:14,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:20:14,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:20:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:20:14,351 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 12:20:14,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:20:14,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347846010] [2022-12-12 12:20:14,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347846010] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:20:14,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:20:14,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 12:20:14,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833744950] [2022-12-12 12:20:14,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:20:14,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 12:20:14,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:20:14,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 12:20:14,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-12 12:20:14,356 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 147 [2022-12-12 12:20:14,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 160 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 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 12:20:14,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:20:14,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 147 [2022-12-12 12:20:14,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:20:14,684 INFO L130 PetriNetUnfolder]: 648/2452 cut-off events. [2022-12-12 12:20:14,684 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-12 12:20:14,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4318 conditions, 2452 events. 648/2452 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 19555 event pairs, 217 based on Foata normal form. 90/2454 useless extension candidates. Maximal degree in co-relation 4261. Up to 685 conditions per place. [2022-12-12 12:20:14,696 INFO L137 encePairwiseOnDemand]: 140/147 looper letters, 52 selfloop transitions, 7 changer transitions 0/182 dead transitions. [2022-12-12 12:20:14,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 182 transitions, 624 flow [2022-12-12 12:20:14,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 12:20:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 12:20:14,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 554 transitions. [2022-12-12 12:20:14,699 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7537414965986394 [2022-12-12 12:20:14,700 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 7 predicate places. [2022-12-12 12:20:14,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 182 transitions, 624 flow [2022-12-12 12:20:14,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 182 transitions, 599 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-12-12 12:20:14,710 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 182 transitions, 599 flow [2022-12-12 12:20:14,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 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 12:20:14,714 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:20:14,715 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:20:14,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 12:20:14,715 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-12 12:20:14,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:20:14,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1829434678, now seen corresponding path program 1 times [2022-12-12 12:20:14,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:20:14,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286909891] [2022-12-12 12:20:14,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:20:14,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:20:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:20:14,923 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 12:20:14,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:20:14,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286909891] [2022-12-12 12:20:14,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286909891] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:20:14,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:20:14,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 12:20:14,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217930729] [2022-12-12 12:20:14,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:20:14,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 12:20:14,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:20:14,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 12:20:14,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-12 12:20:14,926 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 147 [2022-12-12 12:20:14,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 182 transitions, 599 flow. Second operand has 8 states, 8 states have (on average 109.625) internal successors, (877), 8 states have internal predecessors, (877), 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 12:20:14,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:20:14,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 147 [2022-12-12 12:20:14,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:20:15,536 INFO L130 PetriNetUnfolder]: 929/3128 cut-off events. [2022-12-12 12:20:15,536 INFO L131 PetriNetUnfolder]: For 408/552 co-relation queries the response was YES. [2022-12-12 12:20:15,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6767 conditions, 3128 events. 929/3128 cut-off events. For 408/552 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 25581 event pairs, 174 based on Foata normal form. 95/3151 useless extension candidates. Maximal degree in co-relation 6720. Up to 876 conditions per place. [2022-12-12 12:20:15,552 INFO L137 encePairwiseOnDemand]: 124/147 looper letters, 106 selfloop transitions, 122 changer transitions 4/345 dead transitions. [2022-12-12 12:20:15,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 345 transitions, 1723 flow [2022-12-12 12:20:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-12 12:20:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-12 12:20:15,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3007 transitions. [2022-12-12 12:20:15,558 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7867608581894296 [2022-12-12 12:20:15,560 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 30 predicate places. [2022-12-12 12:20:15,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 345 transitions, 1723 flow [2022-12-12 12:20:15,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 345 transitions, 1528 flow, removed 81 selfloop flow, removed 5 redundant places. [2022-12-12 12:20:15,566 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 345 transitions, 1528 flow [2022-12-12 12:20:15,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 109.625) internal successors, (877), 8 states have internal predecessors, (877), 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 12:20:15,567 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:20:15,567 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:20:15,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 12:20:15,567 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-12 12:20:15,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:20:15,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1366546949, now seen corresponding path program 1 times [2022-12-12 12:20:15,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:20:15,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861674609] [2022-12-12 12:20:15,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:20:15,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:20:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:20:15,688 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 12:20:15,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:20:15,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861674609] [2022-12-12 12:20:15,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861674609] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:20:15,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:20:15,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 12:20:15,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500533654] [2022-12-12 12:20:15,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:20:15,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 12:20:15,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:20:15,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 12:20:15,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 12:20:15,695 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 147 [2022-12-12 12:20:15,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 345 transitions, 1528 flow. Second operand has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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 12:20:15,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:20:15,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 147 [2022-12-12 12:20:15,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:20:15,984 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([183] L19-18-->L19-19: Formula: (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_8| |v_ULTIMATE.start___VERIFIER_assert_~cond#1_14|) InVars {ULTIMATE.start___VERIFIER_assert_#in~cond#1=|v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_8|} OutVars{ULTIMATE.start___VERIFIER_assert_~cond#1=|v_ULTIMATE.start___VERIFIER_assert_~cond#1_14|, ULTIMATE.start___VERIFIER_assert_#in~cond#1=|v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_8|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_~cond#1][309], [113#L702-2true, t2_funThread1of1ForFork1InUse, t_funThread1of1ForFork0InUse, 175#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 207#(and (<= ~g1~0 1) (= |t_funThread1of1ForFork0_#t~post3| 0) (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (not (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0)) (<= 1 ~g1~0)), 36#L19-19true, 228#true, 163#(and (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (not (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0)))]) [2022-12-12 12:20:15,984 INFO L382 tUnfolder$Statistics]: this new event has 97 ancestors and is cut-off event [2022-12-12 12:20:15,984 INFO L385 tUnfolder$Statistics]: existing Event has 97 ancestors and is cut-off event [2022-12-12 12:20:15,984 INFO L385 tUnfolder$Statistics]: existing Event has 97 ancestors and is cut-off event [2022-12-12 12:20:15,985 INFO L385 tUnfolder$Statistics]: existing Event has 97 ancestors and is cut-off event [2022-12-12 12:20:16,032 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([183] L19-18-->L19-19: Formula: (= |v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_8| |v_ULTIMATE.start___VERIFIER_assert_~cond#1_14|) InVars {ULTIMATE.start___VERIFIER_assert_#in~cond#1=|v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_8|} OutVars{ULTIMATE.start___VERIFIER_assert_~cond#1=|v_ULTIMATE.start___VERIFIER_assert_~cond#1_14|, ULTIMATE.start___VERIFIER_assert_#in~cond#1=|v_ULTIMATE.start___VERIFIER_assert_#in~cond#1_8|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_~cond#1][321], [113#L702-2true, t2_funThread1of1ForFork1InUse, t_funThread1of1ForFork0InUse, 175#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 213#(and (<= ~g1~0 1) (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (not (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0)) (<= 1 ~g1~0)), 109#L689true, 36#L19-19true, 228#true, 163#(and (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (not (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0)))]) [2022-12-12 12:20:16,033 INFO L382 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-12-12 12:20:16,033 INFO L385 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-12-12 12:20:16,033 INFO L385 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-12-12 12:20:16,033 INFO L385 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-12-12 12:20:16,117 INFO L130 PetriNetUnfolder]: 1679/4956 cut-off events. [2022-12-12 12:20:16,117 INFO L131 PetriNetUnfolder]: For 2012/2034 co-relation queries the response was YES. [2022-12-12 12:20:16,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10857 conditions, 4956 events. 1679/4956 cut-off events. For 2012/2034 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 42837 event pairs, 303 based on Foata normal form. 9/4775 useless extension candidates. Maximal degree in co-relation 10809. Up to 1348 conditions per place. [2022-12-12 12:20:16,140 INFO L137 encePairwiseOnDemand]: 135/147 looper letters, 177 selfloop transitions, 124 changer transitions 15/449 dead transitions. [2022-12-12 12:20:16,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 449 transitions, 2694 flow [2022-12-12 12:20:16,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 12:20:16,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 12:20:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1050 transitions. [2022-12-12 12:20:16,142 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7936507936507936 [2022-12-12 12:20:16,144 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 33 predicate places. [2022-12-12 12:20:16,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 449 transitions, 2694 flow [2022-12-12 12:20:16,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 449 transitions, 2670 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-12-12 12:20:16,150 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 449 transitions, 2670 flow [2022-12-12 12:20:16,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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 12:20:16,151 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:20:16,151 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:20:16,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 12:20:16,152 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-12 12:20:16,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:20:16,152 INFO L85 PathProgramCache]: Analyzing trace with hash -155392563, now seen corresponding path program 1 times [2022-12-12 12:20:16,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:20:16,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968315080] [2022-12-12 12:20:16,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:20:16,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:20:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:20:16,247 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 12:20:16,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:20:16,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968315080] [2022-12-12 12:20:16,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968315080] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:20:16,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:20:16,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 12:20:16,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812584818] [2022-12-12 12:20:16,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:20:16,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 12:20:16,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:20:16,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 12:20:16,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 12:20:16,249 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 147 [2022-12-12 12:20:16,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 449 transitions, 2670 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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 12:20:16,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:20:16,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 147 [2022-12-12 12:20:16,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:20:16,657 INFO L130 PetriNetUnfolder]: 954/3866 cut-off events. [2022-12-12 12:20:16,659 INFO L131 PetriNetUnfolder]: For 1816/2071 co-relation queries the response was YES. [2022-12-12 12:20:16,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9640 conditions, 3866 events. 954/3866 cut-off events. For 1816/2071 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 34419 event pairs, 70 based on Foata normal form. 239/4045 useless extension candidates. Maximal degree in co-relation 9585. Up to 930 conditions per place. [2022-12-12 12:20:16,677 INFO L137 encePairwiseOnDemand]: 129/147 looper letters, 49 selfloop transitions, 34 changer transitions 39/428 dead transitions. [2022-12-12 12:20:16,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 428 transitions, 2608 flow [2022-12-12 12:20:16,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 12:20:16,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 12:20:16,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2022-12-12 12:20:16,679 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8344671201814059 [2022-12-12 12:20:16,681 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 35 predicate places. [2022-12-12 12:20:16,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 428 transitions, 2608 flow [2022-12-12 12:20:16,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 428 transitions, 2550 flow, removed 29 selfloop flow, removed 0 redundant places. [2022-12-12 12:20:16,690 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 428 transitions, 2550 flow [2022-12-12 12:20:16,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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 12:20:16,691 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:20:16,691 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:20:16,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 12:20:16,692 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-12 12:20:16,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:20:16,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1308230379, now seen corresponding path program 2 times [2022-12-12 12:20:16,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:20:16,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113370103] [2022-12-12 12:20:16,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:20:16,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:20:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:20:16,963 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 12:20:16,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:20:16,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113370103] [2022-12-12 12:20:16,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113370103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:20:16,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:20:16,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:20:16,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534666650] [2022-12-12 12:20:16,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:20:16,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:20:16,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:20:16,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:20:16,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:20:16,965 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 147 [2022-12-12 12:20:16,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 428 transitions, 2550 flow. Second operand has 7 states, 7 states have (on average 97.28571428571429) internal successors, (681), 7 states have internal predecessors, (681), 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 12:20:16,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:20:16,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 147 [2022-12-12 12:20:16,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:20:17,128 INFO L130 PetriNetUnfolder]: 263/1393 cut-off events. [2022-12-12 12:20:17,128 INFO L131 PetriNetUnfolder]: For 1103/1376 co-relation queries the response was YES. [2022-12-12 12:20:17,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4117 conditions, 1393 events. 263/1393 cut-off events. For 1103/1376 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 9357 event pairs, 36 based on Foata normal form. 92/1460 useless extension candidates. Maximal degree in co-relation 4049. Up to 480 conditions per place. [2022-12-12 12:20:17,133 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 76 selfloop transitions, 10 changer transitions 49/237 dead transitions. [2022-12-12 12:20:17,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 237 transitions, 1506 flow [2022-12-12 12:20:17,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 12:20:17,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 12:20:17,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 609 transitions. [2022-12-12 12:20:17,135 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2022-12-12 12:20:17,136 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 17 predicate places. [2022-12-12 12:20:17,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 237 transitions, 1506 flow [2022-12-12 12:20:17,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 237 transitions, 1257 flow, removed 85 selfloop flow, removed 6 redundant places. [2022-12-12 12:20:17,140 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 237 transitions, 1257 flow [2022-12-12 12:20:17,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.28571428571429) internal successors, (681), 7 states have internal predecessors, (681), 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 12:20:17,140 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:20:17,140 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:20:17,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 12:20:17,141 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-12 12:20:17,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:20:17,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1277562093, now seen corresponding path program 1 times [2022-12-12 12:20:17,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:20:17,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500905575] [2022-12-12 12:20:17,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:20:17,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:20:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:20:17,330 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 12:20:17,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:20:17,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500905575] [2022-12-12 12:20:17,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500905575] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:20:17,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:20:17,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 12:20:17,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584952338] [2022-12-12 12:20:17,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:20:17,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 12:20:17,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:20:17,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 12:20:17,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-12 12:20:17,332 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 147 [2022-12-12 12:20:17,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 237 transitions, 1257 flow. Second operand has 8 states, 8 states have (on average 96.75) internal successors, (774), 8 states have internal predecessors, (774), 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 12:20:17,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:20:17,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 147 [2022-12-12 12:20:17,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:20:17,469 INFO L130 PetriNetUnfolder]: 90/743 cut-off events. [2022-12-12 12:20:17,469 INFO L131 PetriNetUnfolder]: For 635/720 co-relation queries the response was YES. [2022-12-12 12:20:17,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2071 conditions, 743 events. 90/743 cut-off events. For 635/720 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4133 event pairs, 4 based on Foata normal form. 52/792 useless extension candidates. Maximal degree in co-relation 2002. Up to 171 conditions per place. [2022-12-12 12:20:17,472 INFO L137 encePairwiseOnDemand]: 140/147 looper letters, 78 selfloop transitions, 11 changer transitions 51/232 dead transitions. [2022-12-12 12:20:17,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 232 transitions, 1441 flow [2022-12-12 12:20:17,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 12:20:17,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 12:20:17,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 612 transitions. [2022-12-12 12:20:17,474 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6938775510204082 [2022-12-12 12:20:17,474 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 15 predicate places. [2022-12-12 12:20:17,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 232 transitions, 1441 flow [2022-12-12 12:20:17,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 232 transitions, 1354 flow, removed 41 selfloop flow, removed 3 redundant places. [2022-12-12 12:20:17,477 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 232 transitions, 1354 flow [2022-12-12 12:20:17,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 96.75) internal successors, (774), 8 states have internal predecessors, (774), 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 12:20:17,478 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:20:17,478 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:20:17,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 12:20:17,479 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-12 12:20:17,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:20:17,479 INFO L85 PathProgramCache]: Analyzing trace with hash -639504141, now seen corresponding path program 1 times [2022-12-12 12:20:17,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:20:17,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121112320] [2022-12-12 12:20:17,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:20:17,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:20:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:20:17,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:20:17,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:20:17,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121112320] [2022-12-12 12:20:17,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121112320] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:20:17,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:20:17,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 12:20:17,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656755377] [2022-12-12 12:20:17,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:20:17,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 12:20:17,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:20:17,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 12:20:17,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-12 12:20:17,633 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 147 [2022-12-12 12:20:17,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 232 transitions, 1354 flow. Second operand has 8 states, 8 states have (on average 110.625) internal successors, (885), 8 states have internal predecessors, (885), 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 12:20:17,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:20:17,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 147 [2022-12-12 12:20:17,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:20:17,837 INFO L130 PetriNetUnfolder]: 98/749 cut-off events. [2022-12-12 12:20:17,837 INFO L131 PetriNetUnfolder]: For 800/884 co-relation queries the response was YES. [2022-12-12 12:20:17,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2292 conditions, 749 events. 98/749 cut-off events. For 800/884 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4151 event pairs, 2 based on Foata normal form. 24/773 useless extension candidates. Maximal degree in co-relation 2239. Up to 166 conditions per place. [2022-12-12 12:20:17,839 INFO L137 encePairwiseOnDemand]: 131/147 looper letters, 0 selfloop transitions, 0 changer transitions 263/263 dead transitions. [2022-12-12 12:20:17,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 263 transitions, 1782 flow [2022-12-12 12:20:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-12 12:20:17,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-12 12:20:17,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2328 transitions. [2022-12-12 12:20:17,843 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7541302235179786 [2022-12-12 12:20:17,843 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 30 predicate places. [2022-12-12 12:20:17,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 263 transitions, 1782 flow [2022-12-12 12:20:17,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 263 transitions, 1647 flow, removed 51 selfloop flow, removed 6 redundant places. [2022-12-12 12:20:17,847 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 263 transitions, 1647 flow [2022-12-12 12:20:17,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 110.625) internal successors, (885), 8 states have internal predecessors, (885), 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 12:20:17,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-12 12:20:17,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-12-12 12:20:17,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-12-12 12:20:17,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-12-12 12:20:17,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2022-12-12 12:20:17,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2022-12-12 12:20:17,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 12:20:17,851 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-12-12 12:20:17,853 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 12:20:17,853 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 12:20:17,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 12:20:17 BasicIcfg [2022-12-12 12:20:17,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 12:20:17,856 INFO L158 Benchmark]: Toolchain (without parser) took 5699.48ms. Allocated memory was 206.6MB in the beginning and 414.2MB in the end (delta: 207.6MB). Free memory was 181.5MB in the beginning and 260.1MB in the end (delta: -78.5MB). Peak memory consumption was 130.5MB. Max. memory is 8.0GB. [2022-12-12 12:20:17,856 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 206.6MB. Free memory is still 182.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 12:20:17,856 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.51ms. Allocated memory is still 206.6MB. Free memory was 180.8MB in the beginning and 161.4MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-12 12:20:17,857 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.37ms. Allocated memory is still 206.6MB. Free memory was 161.4MB in the beginning and 159.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 12:20:17,857 INFO L158 Benchmark]: Boogie Preprocessor took 27.36ms. Allocated memory is still 206.6MB. Free memory was 159.4MB in the beginning and 157.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 12:20:17,857 INFO L158 Benchmark]: RCFGBuilder took 343.10ms. Allocated memory is still 206.6MB. Free memory was 157.8MB in the beginning and 140.0MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-12-12 12:20:17,857 INFO L158 Benchmark]: TraceAbstraction took 4893.63ms. Allocated memory was 206.6MB in the beginning and 414.2MB in the end (delta: 207.6MB). Free memory was 138.9MB in the beginning and 260.1MB in the end (delta: -121.2MB). Peak memory consumption was 87.5MB. Max. memory is 8.0GB. [2022-12-12 12:20:17,858 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 206.6MB. Free memory is still 182.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 384.51ms. Allocated memory is still 206.6MB. Free memory was 180.8MB in the beginning and 161.4MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.37ms. Allocated memory is still 206.6MB. Free memory was 161.4MB in the beginning and 159.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.36ms. Allocated memory is still 206.6MB. Free memory was 159.4MB in the beginning and 157.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 343.10ms. Allocated memory is still 206.6MB. Free memory was 157.8MB in the beginning and 140.0MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 4893.63ms. Allocated memory was 206.6MB in the beginning and 414.2MB in the end (delta: 207.6MB). Free memory was 138.9MB in the beginning and 260.1MB in the end (delta: -121.2MB). Peak memory consumption was 87.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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, 184 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: 4.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 575 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 575 mSDsluCounter, 662 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 463 mSDsCounter, 160 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 887 IncrementalHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 160 mSolverCounterUnsat, 199 mSDtfsCounter, 887 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2670occurred in iteration=4, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 778 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 582 NumberOfCodeBlocks, 582 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 574 ConstructedInterpolants, 0 QuantifiedInterpolants, 2284 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 12:20:17,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...