./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe024_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe024_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f830c559346dfed293d38cb3f451f57bf45496349320c2696ae4150a4c0c44e9 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:38:07,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:38:07,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:38:07,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:38:07,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:38:07,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:38:07,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:38:07,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:38:07,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:38:07,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:38:07,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:38:07,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:38:07,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:38:07,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:38:07,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:38:07,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:38:07,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:38:07,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:38:07,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:38:07,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:38:07,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:38:07,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:38:07,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:38:07,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:38:07,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:38:07,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:38:07,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:38:07,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:38:07,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:38:07,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:38:07,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:38:07,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:38:07,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:38:07,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:38:07,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:38:07,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:38:07,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:38:07,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:38:07,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:38:07,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:38:07,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:38:07,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 16:38:07,625 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:38:07,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:38:07,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:38:07,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:38:07,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:38:07,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:38:07,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:38:07,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:38:07,627 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:38:07,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:38:07,628 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 16:38:07,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 16:38:07,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 16:38:07,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:38:07,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:38:07,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:38:07,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:38:07,629 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 16:38:07,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:38:07,629 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:38:07,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:38:07,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:38:07,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:38:07,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:38:07,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:38:07,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:38:07,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:38:07,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:38:07,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 16:38:07,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 16:38:07,631 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:38:07,631 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:38:07,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:38:07,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:38:07,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f830c559346dfed293d38cb3f451f57bf45496349320c2696ae4150a4c0c44e9 [2021-12-14 16:38:07,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:38:07,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:38:07,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:38:07,824 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:38:07,835 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:38:07,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe024_tso.i [2021-12-14 16:38:07,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8a5f8cb6/dc69063e06124adabc8625d17ffb2aaa/FLAGc39cdfbbf [2021-12-14 16:38:08,248 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:38:08,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe024_tso.i [2021-12-14 16:38:08,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8a5f8cb6/dc69063e06124adabc8625d17ffb2aaa/FLAGc39cdfbbf [2021-12-14 16:38:08,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8a5f8cb6/dc69063e06124adabc8625d17ffb2aaa [2021-12-14 16:38:08,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:38:08,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:38:08,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:38:08,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:38:08,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:38:08,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:38:08" (1/1) ... [2021-12-14 16:38:08,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9f26607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:38:08, skipping insertion in model container [2021-12-14 16:38:08,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:38:08" (1/1) ... [2021-12-14 16:38:08,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:38:08,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:38:08,850 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe024_tso.i[945,958] [2021-12-14 16:38:08,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:38:08,998 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:38:09,008 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe024_tso.i[945,958] [2021-12-14 16:38:09,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:38:09,055 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:38:09,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:38:09 WrapperNode [2021-12-14 16:38:09,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:38:09,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:38:09,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:38:09,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:38:09,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:38:09" (1/1) ... [2021-12-14 16:38:09,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:38:09" (1/1) ... [2021-12-14 16:38:09,106 INFO L137 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2021-12-14 16:38:09,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:38:09,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:38:09,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:38:09,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:38:09,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:38:09" (1/1) ... [2021-12-14 16:38:09,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:38:09" (1/1) ... [2021-12-14 16:38:09,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:38:09" (1/1) ... [2021-12-14 16:38:09,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:38:09" (1/1) ... [2021-12-14 16:38:09,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:38:09" (1/1) ... [2021-12-14 16:38:09,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:38:09" (1/1) ... [2021-12-14 16:38:09,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:38:09" (1/1) ... [2021-12-14 16:38:09,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:38:09,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:38:09,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:38:09,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:38:09,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:38:09" (1/1) ... [2021-12-14 16:38:09,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:38:09,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:38:09,169 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) [2021-12-14 16:38:09,223 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 [2021-12-14 16:38:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 16:38:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-14 16:38:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:38:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 16:38:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 16:38:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-14 16:38:09,252 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-14 16:38:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-14 16:38:09,252 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-14 16:38:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-14 16:38:09,252 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-14 16:38:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 16:38:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-14 16:38:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:38:09,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:38:09,254 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-14 16:38:09,331 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:38:09,332 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:38:09,439 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:38:09,443 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:38:09,444 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 16:38:09,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:38:09 BoogieIcfgContainer [2021-12-14 16:38:09,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:38:09,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:38:09,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:38:09,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:38:09,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:38:08" (1/3) ... [2021-12-14 16:38:09,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426dc91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:38:09, skipping insertion in model container [2021-12-14 16:38:09,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:38:09" (2/3) ... [2021-12-14 16:38:09,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426dc91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:38:09, skipping insertion in model container [2021-12-14 16:38:09,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:38:09" (3/3) ... [2021-12-14 16:38:09,451 INFO L111 eAbstractionObserver]: Analyzing ICFG safe024_tso.i [2021-12-14 16:38:09,455 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-14 16:38:09,455 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:38:09,456 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 16:38:09,456 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-14 16:38:09,484 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,484 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,484 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,485 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,485 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,485 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,485 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,485 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,486 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,486 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,486 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,486 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,486 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,487 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,487 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,487 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,487 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,487 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,487 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,493 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,494 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,494 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,494 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,494 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,494 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,495 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,495 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,495 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,495 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,495 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,495 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,495 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,496 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,496 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,496 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,496 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,499 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,499 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,499 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,499 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,501 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,502 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,502 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,502 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,503 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,503 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,503 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,503 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:38:09,504 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-14 16:38:09,534 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:38:09,539 INFO L339 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=true, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 16:38:09,539 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-14 16:38:09,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 201 flow [2021-12-14 16:38:09,577 INFO L129 PetriNetUnfolder]: 2/90 cut-off events. [2021-12-14 16:38:09,578 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-14 16:38:09,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-12-14 16:38:09,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 201 flow [2021-12-14 16:38:09,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 76 transitions, 161 flow [2021-12-14 16:38:09,597 INFO L129 PetriNetUnfolder]: 1/75 cut-off events. [2021-12-14 16:38:09,598 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-14 16:38:09,598 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:38:09,598 INFO L254 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] [2021-12-14 16:38:09,599 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:38:09,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:38:09,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1963335275, now seen corresponding path program 1 times [2021-12-14 16:38:09,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:38:09,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930241057] [2021-12-14 16:38:09,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:38:09,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:38:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:38:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:38:09,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:38:09,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930241057] [2021-12-14 16:38:09,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930241057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:38:09,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:38:09,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 16:38:09,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428533595] [2021-12-14 16:38:09,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:38:09,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:38:09,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:38:09,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:38:09,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 16:38:09,884 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 93 [2021-12-14 16:38:09,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 161 flow. Second operand has 6 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 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) [2021-12-14 16:38:09,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:38:09,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 93 [2021-12-14 16:38:09,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:38:10,029 INFO L129 PetriNetUnfolder]: 3/91 cut-off events. [2021-12-14 16:38:10,029 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-14 16:38:10,030 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 91 events. 3/91 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 0 based on Foata normal form. 4/94 useless extension candidates. Maximal degree in co-relation 88. Up to 7 conditions per place. [2021-12-14 16:38:10,031 INFO L132 encePairwiseOnDemand]: 86/93 looper letters, 9 selfloop transitions, 2 changer transitions 11/85 dead transitions. [2021-12-14 16:38:10,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 85 transitions, 221 flow [2021-12-14 16:38:10,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 16:38:10,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-14 16:38:10,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 727 transitions. [2021-12-14 16:38:10,043 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8685782556750299 [2021-12-14 16:38:10,044 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 727 transitions. [2021-12-14 16:38:10,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 727 transitions. [2021-12-14 16:38:10,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:38:10,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 727 transitions. [2021-12-14 16:38:10,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.77777777777777) internal successors, (727), 9 states have internal predecessors, (727), 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) [2021-12-14 16:38:10,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2021-12-14 16:38:10,061 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2021-12-14 16:38:10,062 INFO L186 Difference]: Start difference. First operand has 85 places, 76 transitions, 161 flow. Second operand 9 states and 727 transitions. [2021-12-14 16:38:10,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 85 transitions, 221 flow [2021-12-14 16:38:10,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 85 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-14 16:38:10,068 INFO L242 Difference]: Finished difference. Result has 97 places, 74 transitions, 174 flow [2021-12-14 16:38:10,069 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=174, PETRI_PLACES=97, PETRI_TRANSITIONS=74} [2021-12-14 16:38:10,071 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 12 predicate places. [2021-12-14 16:38:10,072 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 74 transitions, 174 flow [2021-12-14 16:38:10,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 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) [2021-12-14 16:38:10,072 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:38:10,072 INFO L254 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] [2021-12-14 16:38:10,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 16:38:10,073 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:38:10,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:38:10,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1391130700, now seen corresponding path program 1 times [2021-12-14 16:38:10,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:38:10,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909131736] [2021-12-14 16:38:10,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:38:10,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:38:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:38:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:38:10,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:38:10,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909131736] [2021-12-14 16:38:10,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909131736] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:38:10,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:38:10,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:38:10,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103158046] [2021-12-14 16:38:10,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:38:10,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:38:10,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:38:10,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:38:10,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:38:10,252 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2021-12-14 16:38:10,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 74 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 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) [2021-12-14 16:38:10,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:38:10,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2021-12-14 16:38:10,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:38:10,366 INFO L129 PetriNetUnfolder]: 5/102 cut-off events. [2021-12-14 16:38:10,366 INFO L130 PetriNetUnfolder]: For 23/30 co-relation queries the response was YES. [2021-12-14 16:38:10,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 102 events. 5/102 cut-off events. For 23/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 146 event pairs, 0 based on Foata normal form. 2/104 useless extension candidates. Maximal degree in co-relation 156. Up to 7 conditions per place. [2021-12-14 16:38:10,367 INFO L132 encePairwiseOnDemand]: 85/93 looper letters, 10 selfloop transitions, 4 changer transitions 12/87 dead transitions. [2021-12-14 16:38:10,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 87 transitions, 277 flow [2021-12-14 16:38:10,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 16:38:10,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-14 16:38:10,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 788 transitions. [2021-12-14 16:38:10,371 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8473118279569892 [2021-12-14 16:38:10,371 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 788 transitions. [2021-12-14 16:38:10,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 788 transitions. [2021-12-14 16:38:10,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:38:10,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 788 transitions. [2021-12-14 16:38:10,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.8) internal successors, (788), 10 states have internal predecessors, (788), 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) [2021-12-14 16:38:10,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2021-12-14 16:38:10,379 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2021-12-14 16:38:10,379 INFO L186 Difference]: Start difference. First operand has 97 places, 74 transitions, 174 flow. Second operand 10 states and 788 transitions. [2021-12-14 16:38:10,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 87 transitions, 277 flow [2021-12-14 16:38:10,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 87 transitions, 243 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-12-14 16:38:10,382 INFO L242 Difference]: Finished difference. Result has 99 places, 74 transitions, 188 flow [2021-12-14 16:38:10,382 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=188, PETRI_PLACES=99, PETRI_TRANSITIONS=74} [2021-12-14 16:38:10,383 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 14 predicate places. [2021-12-14 16:38:10,383 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 74 transitions, 188 flow [2021-12-14 16:38:10,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 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) [2021-12-14 16:38:10,384 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:38:10,384 INFO L254 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] [2021-12-14 16:38:10,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 16:38:10,384 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:38:10,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:38:10,385 INFO L85 PathProgramCache]: Analyzing trace with hash 509569347, now seen corresponding path program 1 times [2021-12-14 16:38:10,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:38:10,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631954981] [2021-12-14 16:38:10,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:38:10,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:38:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:38:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:38:10,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:38:10,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631954981] [2021-12-14 16:38:10,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631954981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:38:10,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:38:10,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 16:38:10,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472433506] [2021-12-14 16:38:10,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:38:10,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:38:10,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:38:10,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:38:10,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 16:38:10,484 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2021-12-14 16:38:10,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 74 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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) [2021-12-14 16:38:10,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:38:10,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2021-12-14 16:38:10,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:38:10,587 INFO L129 PetriNetUnfolder]: 96/342 cut-off events. [2021-12-14 16:38:10,587 INFO L130 PetriNetUnfolder]: For 48/49 co-relation queries the response was YES. [2021-12-14 16:38:10,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 626 conditions, 342 events. 96/342 cut-off events. For 48/49 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1583 event pairs, 3 based on Foata normal form. 8/346 useless extension candidates. Maximal degree in co-relation 586. Up to 81 conditions per place. [2021-12-14 16:38:10,590 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 15 selfloop transitions, 6 changer transitions 19/101 dead transitions. [2021-12-14 16:38:10,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 101 transitions, 326 flow [2021-12-14 16:38:10,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 16:38:10,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-14 16:38:10,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 726 transitions. [2021-12-14 16:38:10,592 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8673835125448028 [2021-12-14 16:38:10,593 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 726 transitions. [2021-12-14 16:38:10,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 726 transitions. [2021-12-14 16:38:10,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:38:10,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 726 transitions. [2021-12-14 16:38:10,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.66666666666667) internal successors, (726), 9 states have internal predecessors, (726), 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) [2021-12-14 16:38:10,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2021-12-14 16:38:10,596 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2021-12-14 16:38:10,597 INFO L186 Difference]: Start difference. First operand has 99 places, 74 transitions, 188 flow. Second operand 9 states and 726 transitions. [2021-12-14 16:38:10,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 101 transitions, 326 flow [2021-12-14 16:38:10,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 101 transitions, 300 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-12-14 16:38:10,600 INFO L242 Difference]: Finished difference. Result has 97 places, 77 transitions, 218 flow [2021-12-14 16:38:10,601 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=97, PETRI_TRANSITIONS=77} [2021-12-14 16:38:10,601 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 12 predicate places. [2021-12-14 16:38:10,601 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 77 transitions, 218 flow [2021-12-14 16:38:10,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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) [2021-12-14 16:38:10,602 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:38:10,602 INFO L254 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] [2021-12-14 16:38:10,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 16:38:10,603 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:38:10,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:38:10,603 INFO L85 PathProgramCache]: Analyzing trace with hash 886086076, now seen corresponding path program 1 times [2021-12-14 16:38:10,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:38:10,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32733184] [2021-12-14 16:38:10,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:38:10,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:38:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:38:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:38:10,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:38:10,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32733184] [2021-12-14 16:38:10,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32733184] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:38:10,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:38:10,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:38:10,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679695344] [2021-12-14 16:38:10,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:38:10,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:38:10,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:38:10,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:38:10,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:38:10,678 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2021-12-14 16:38:10,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 77 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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) [2021-12-14 16:38:10,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:38:10,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2021-12-14 16:38:10,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:38:10,787 INFO L129 PetriNetUnfolder]: 57/236 cut-off events. [2021-12-14 16:38:10,787 INFO L130 PetriNetUnfolder]: For 313/319 co-relation queries the response was YES. [2021-12-14 16:38:10,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 236 events. 57/236 cut-off events. For 313/319 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 840 event pairs, 0 based on Foata normal form. 9/243 useless extension candidates. Maximal degree in co-relation 610. Up to 80 conditions per place. [2021-12-14 16:38:10,792 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 16 selfloop transitions, 9 changer transitions 19/105 dead transitions. [2021-12-14 16:38:10,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 105 transitions, 495 flow [2021-12-14 16:38:10,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 16:38:10,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-14 16:38:10,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 806 transitions. [2021-12-14 16:38:10,795 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2021-12-14 16:38:10,795 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 806 transitions. [2021-12-14 16:38:10,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 806 transitions. [2021-12-14 16:38:10,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:38:10,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 806 transitions. [2021-12-14 16:38:10,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.6) internal successors, (806), 10 states have internal predecessors, (806), 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) [2021-12-14 16:38:10,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2021-12-14 16:38:10,799 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2021-12-14 16:38:10,799 INFO L186 Difference]: Start difference. First operand has 97 places, 77 transitions, 218 flow. Second operand 10 states and 806 transitions. [2021-12-14 16:38:10,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 105 transitions, 495 flow [2021-12-14 16:38:10,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 105 transitions, 471 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-12-14 16:38:10,807 INFO L242 Difference]: Finished difference. Result has 103 places, 80 transitions, 286 flow [2021-12-14 16:38:10,807 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=286, PETRI_PLACES=103, PETRI_TRANSITIONS=80} [2021-12-14 16:38:10,808 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 18 predicate places. [2021-12-14 16:38:10,808 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 80 transitions, 286 flow [2021-12-14 16:38:10,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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) [2021-12-14 16:38:10,809 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:38:10,809 INFO L254 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] [2021-12-14 16:38:10,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 16:38:10,810 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:38:10,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:38:10,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1056938009, now seen corresponding path program 1 times [2021-12-14 16:38:10,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:38:10,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873857527] [2021-12-14 16:38:10,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:38:10,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:38:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:38:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:38:10,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:38:10,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873857527] [2021-12-14 16:38:10,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873857527] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:38:10,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:38:10,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 16:38:10,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112162392] [2021-12-14 16:38:10,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:38:10,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 16:38:10,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:38:10,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 16:38:10,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-14 16:38:10,892 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2021-12-14 16:38:10,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 80 transitions, 286 flow. Second operand has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 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) [2021-12-14 16:38:10,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:38:10,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2021-12-14 16:38:10,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:38:10,998 INFO L129 PetriNetUnfolder]: 21/153 cut-off events. [2021-12-14 16:38:10,998 INFO L130 PetriNetUnfolder]: For 411/421 co-relation queries the response was YES. [2021-12-14 16:38:10,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 153 events. 21/153 cut-off events. For 411/421 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 379 event pairs, 0 based on Foata normal form. 6/159 useless extension candidates. Maximal degree in co-relation 410. Up to 35 conditions per place. [2021-12-14 16:38:10,999 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 10 selfloop transitions, 12 changer transitions 13/96 dead transitions. [2021-12-14 16:38:11,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 96 transitions, 494 flow [2021-12-14 16:38:11,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 16:38:11,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-14 16:38:11,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 873 transitions. [2021-12-14 16:38:11,002 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8533724340175953 [2021-12-14 16:38:11,002 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 873 transitions. [2021-12-14 16:38:11,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 873 transitions. [2021-12-14 16:38:11,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:38:11,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 873 transitions. [2021-12-14 16:38:11,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 79.36363636363636) internal successors, (873), 11 states have internal predecessors, (873), 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) [2021-12-14 16:38:11,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 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) [2021-12-14 16:38:11,006 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 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) [2021-12-14 16:38:11,006 INFO L186 Difference]: Start difference. First operand has 103 places, 80 transitions, 286 flow. Second operand 11 states and 873 transitions. [2021-12-14 16:38:11,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 96 transitions, 494 flow [2021-12-14 16:38:11,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 96 transitions, 395 flow, removed 39 selfloop flow, removed 10 redundant places. [2021-12-14 16:38:11,009 INFO L242 Difference]: Finished difference. Result has 105 places, 80 transitions, 272 flow [2021-12-14 16:38:11,010 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=272, PETRI_PLACES=105, PETRI_TRANSITIONS=80} [2021-12-14 16:38:11,010 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 20 predicate places. [2021-12-14 16:38:11,010 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 80 transitions, 272 flow [2021-12-14 16:38:11,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 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) [2021-12-14 16:38:11,011 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:38:11,011 INFO L254 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] [2021-12-14 16:38:11,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 16:38:11,011 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:38:11,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:38:11,012 INFO L85 PathProgramCache]: Analyzing trace with hash 851912681, now seen corresponding path program 1 times [2021-12-14 16:38:11,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:38:11,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301185964] [2021-12-14 16:38:11,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:38:11,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:38:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:38:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:38:11,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:38:11,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301185964] [2021-12-14 16:38:11,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301185964] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:38:11,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:38:11,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:38:11,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633485115] [2021-12-14 16:38:11,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:38:11,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:38:11,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:38:11,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:38:11,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:38:11,091 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2021-12-14 16:38:11,092 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 80 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 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) [2021-12-14 16:38:11,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:38:11,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2021-12-14 16:38:11,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:38:11,158 INFO L129 PetriNetUnfolder]: 13/145 cut-off events. [2021-12-14 16:38:11,159 INFO L130 PetriNetUnfolder]: For 160/170 co-relation queries the response was YES. [2021-12-14 16:38:11,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 145 events. 13/145 cut-off events. For 160/170 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 314 event pairs, 0 based on Foata normal form. 1/144 useless extension candidates. Maximal degree in co-relation 275. Up to 23 conditions per place. [2021-12-14 16:38:11,160 INFO L132 encePairwiseOnDemand]: 87/93 looper letters, 12 selfloop transitions, 1 changer transitions 7/87 dead transitions. [2021-12-14 16:38:11,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 87 transitions, 330 flow [2021-12-14 16:38:11,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 16:38:11,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-14 16:38:11,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 553 transitions. [2021-12-14 16:38:11,161 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8494623655913979 [2021-12-14 16:38:11,161 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 553 transitions. [2021-12-14 16:38:11,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 553 transitions. [2021-12-14 16:38:11,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:38:11,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 553 transitions. [2021-12-14 16:38:11,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 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) [2021-12-14 16:38:11,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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) [2021-12-14 16:38:11,164 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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) [2021-12-14 16:38:11,164 INFO L186 Difference]: Start difference. First operand has 105 places, 80 transitions, 272 flow. Second operand 7 states and 553 transitions. [2021-12-14 16:38:11,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 87 transitions, 330 flow [2021-12-14 16:38:11,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 87 transitions, 248 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-12-14 16:38:11,167 INFO L242 Difference]: Finished difference. Result has 97 places, 80 transitions, 203 flow [2021-12-14 16:38:11,167 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=203, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2021-12-14 16:38:11,168 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 12 predicate places. [2021-12-14 16:38:11,168 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 203 flow [2021-12-14 16:38:11,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 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) [2021-12-14 16:38:11,168 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:38:11,168 INFO L254 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] [2021-12-14 16:38:11,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 16:38:11,169 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:38:11,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:38:11,169 INFO L85 PathProgramCache]: Analyzing trace with hash -140209223, now seen corresponding path program 2 times [2021-12-14 16:38:11,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:38:11,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891837744] [2021-12-14 16:38:11,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:38:11,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:38:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:38:11,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:38:11,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:38:11,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891837744] [2021-12-14 16:38:11,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891837744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:38:11,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:38:11,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:38:11,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798479942] [2021-12-14 16:38:11,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:38:11,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:38:11,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:38:11,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:38:11,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:38:11,242 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2021-12-14 16:38:11,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 203 flow. Second operand has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 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) [2021-12-14 16:38:11,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:38:11,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2021-12-14 16:38:11,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:38:11,295 INFO L129 PetriNetUnfolder]: 13/144 cut-off events. [2021-12-14 16:38:11,295 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-14 16:38:11,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 144 events. 13/144 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 373 event pairs, 2 based on Foata normal form. 1/141 useless extension candidates. Maximal degree in co-relation 222. Up to 12 conditions per place. [2021-12-14 16:38:11,295 INFO L132 encePairwiseOnDemand]: 87/93 looper letters, 0 selfloop transitions, 0 changer transitions 81/81 dead transitions. [2021-12-14 16:38:11,296 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 81 transitions, 237 flow [2021-12-14 16:38:11,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 16:38:11,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-14 16:38:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 548 transitions. [2021-12-14 16:38:11,297 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8417818740399385 [2021-12-14 16:38:11,297 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 548 transitions. [2021-12-14 16:38:11,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 548 transitions. [2021-12-14 16:38:11,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:38:11,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 548 transitions. [2021-12-14 16:38:11,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.28571428571429) internal successors, (548), 7 states have internal predecessors, (548), 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) [2021-12-14 16:38:11,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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) [2021-12-14 16:38:11,300 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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) [2021-12-14 16:38:11,300 INFO L186 Difference]: Start difference. First operand has 97 places, 80 transitions, 203 flow. Second operand 7 states and 548 transitions. [2021-12-14 16:38:11,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 81 transitions, 237 flow [2021-12-14 16:38:11,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 81 transitions, 230 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-12-14 16:38:11,301 INFO L242 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2021-12-14 16:38:11,301 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2021-12-14 16:38:11,302 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 8 predicate places. [2021-12-14 16:38:11,302 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2021-12-14 16:38:11,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 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) [2021-12-14 16:38:11,304 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-14 16:38:11,305 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-14 16:38:11,305 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-14 16:38:11,305 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-14 16:38:11,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 16:38:11,308 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2021-12-14 16:38:11,309 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-14 16:38:11,309 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 16:38:11,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:38:11 BasicIcfg [2021-12-14 16:38:11,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 16:38:11,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 16:38:11,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 16:38:11,312 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 16:38:11,312 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:38:09" (3/4) ... [2021-12-14 16:38:11,314 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-14 16:38:11,318 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-14 16:38:11,318 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-14 16:38:11,318 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-14 16:38:11,321 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-14 16:38:11,321 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-14 16:38:11,321 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-14 16:38:11,321 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-14 16:38:11,340 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 16:38:11,340 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 16:38:11,341 INFO L158 Benchmark]: Toolchain (without parser) took 2686.76ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 45.8MB in the beginning and 38.3MB in the end (delta: 7.6MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. [2021-12-14 16:38:11,341 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 63.8MB in the beginning and 63.7MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 16:38:11,341 INFO L158 Benchmark]: CACSL2BoogieTranslator took 400.69ms. Allocated memory is still 83.9MB. Free memory was 45.6MB in the beginning and 49.1MB in the end (delta: -3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-14 16:38:11,342 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.99ms. Allocated memory is still 83.9MB. Free memory was 49.1MB in the beginning and 47.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:38:11,342 INFO L158 Benchmark]: Boogie Preprocessor took 39.20ms. Allocated memory is still 83.9MB. Free memory was 47.0MB in the beginning and 45.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:38:11,342 INFO L158 Benchmark]: RCFGBuilder took 298.67ms. Allocated memory is still 83.9MB. Free memory was 45.7MB in the beginning and 33.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-14 16:38:11,342 INFO L158 Benchmark]: TraceAbstraction took 1864.67ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 33.1MB in the beginning and 41.4MB in the end (delta: -8.3MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2021-12-14 16:38:11,343 INFO L158 Benchmark]: Witness Printer took 28.77ms. Allocated memory is still 121.6MB. Free memory was 41.4MB in the beginning and 38.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:38:11,344 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 63.8MB in the beginning and 63.7MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 400.69ms. Allocated memory is still 83.9MB. Free memory was 45.6MB in the beginning and 49.1MB in the end (delta: -3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.99ms. Allocated memory is still 83.9MB. Free memory was 49.1MB in the beginning and 47.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.20ms. Allocated memory is still 83.9MB. Free memory was 47.0MB in the beginning and 45.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 298.67ms. Allocated memory is still 83.9MB. Free memory was 45.7MB in the beginning and 33.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1864.67ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 33.1MB in the beginning and 41.4MB in the end (delta: -8.3MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. * Witness Printer took 28.77ms. Allocated memory is still 121.6MB. Free memory was 41.4MB in the beginning and 38.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 116 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: 1.8s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 151 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 151 mSDsluCounter, 190 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 236 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 358 IncrementalHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 46 mSDtfsCounter, 358 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=286occurred in iteration=4, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 437 NumberOfCodeBlocks, 437 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 430 ConstructedInterpolants, 0 QuantifiedInterpolants, 1188 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-14 16:38:11,372 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE