./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe010_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/safe010_tso.opt.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 d7b99eb0691db756f3c08dc52ba10dd69081a5de .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 14:37:57,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 14:37:57,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 14:37:57,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 14:37:57,492 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 14:37:57,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 14:37:57,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 14:37:57,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 14:37:57,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 14:37:57,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 14:37:57,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 14:37:57,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 14:37:57,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 14:37:57,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 14:37:57,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 14:37:57,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 14:37:57,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 14:37:57,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 14:37:57,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 14:37:57,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 14:37:57,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 14:37:57,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 14:37:57,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 14:37:57,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 14:37:57,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 14:37:57,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 14:37:57,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 14:37:57,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 14:37:57,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 14:37:57,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 14:37:57,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 14:37:57,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 14:37:57,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 14:37:57,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 14:37:57,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 14:37:57,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 14:37:57,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 14:37:57,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 14:37:57,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 14:37:57,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 14:37:57,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 14:37:57,553 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 14:37:57,589 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 14:37:57,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 14:37:57,591 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 14:37:57,591 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 14:37:57,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 14:37:57,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 14:37:57,593 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 14:37:57,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 14:37:57,594 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 14:37:57,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 14:37:57,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 14:37:57,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 14:37:57,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 14:37:57,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 14:37:57,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 14:37:57,596 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 14:37:57,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 14:37:57,597 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 14:37:57,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 14:37:57,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 14:37:57,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 14:37:57,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 14:37:57,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 14:37:57,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 14:37:57,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 14:37:57,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 14:37:57,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 14:37:57,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 14:37:57,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 14:37:57,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 14:37:57,608 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b99eb0691db756f3c08dc52ba10dd69081a5de [2021-08-26 14:37:57,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 14:37:57,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 14:37:57,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 14:37:57,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 14:37:57,972 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 14:37:57,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe010_tso.opt.i [2021-08-26 14:37:58,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25a452ee4/a62182c2fea74d9689ca2107b4d7ce70/FLAG24188bd46 [2021-08-26 14:37:58,493 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 14:37:58,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe010_tso.opt.i [2021-08-26 14:37:58,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25a452ee4/a62182c2fea74d9689ca2107b4d7ce70/FLAG24188bd46 [2021-08-26 14:37:58,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25a452ee4/a62182c2fea74d9689ca2107b4d7ce70 [2021-08-26 14:37:58,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 14:37:58,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 14:37:58,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 14:37:58,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 14:37:58,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 14:37:58,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:37:58" (1/1) ... [2021-08-26 14:37:58,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc86e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:58, skipping insertion in model container [2021-08-26 14:37:58,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:37:58" (1/1) ... [2021-08-26 14:37:58,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 14:37:58,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 14:37:59,145 WARN L228 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/safe010_tso.opt.i[949,962] [2021-08-26 14:37:59,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 14:37:59,319 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 14:37:59,330 WARN L228 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/safe010_tso.opt.i[949,962] [2021-08-26 14:37:59,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 14:37:59,402 INFO L208 MainTranslator]: Completed translation [2021-08-26 14:37:59,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:59 WrapperNode [2021-08-26 14:37:59,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 14:37:59,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 14:37:59,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 14:37:59,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 14:37:59,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:59" (1/1) ... [2021-08-26 14:37:59,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:59" (1/1) ... [2021-08-26 14:37:59,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 14:37:59,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 14:37:59,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 14:37:59,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 14:37:59,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:59" (1/1) ... [2021-08-26 14:37:59,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:59" (1/1) ... [2021-08-26 14:37:59,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:59" (1/1) ... [2021-08-26 14:37:59,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:59" (1/1) ... [2021-08-26 14:37:59,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:59" (1/1) ... [2021-08-26 14:37:59,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:59" (1/1) ... [2021-08-26 14:37:59,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:59" (1/1) ... [2021-08-26 14:37:59,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 14:37:59,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 14:37:59,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 14:37:59,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 14:37:59,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:59" (1/1) ... [2021-08-26 14:37:59,513 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 14:37:59,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:37:59,534 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) [2021-08-26 14:37:59,558 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 [2021-08-26 14:37:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 14:37:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-26 14:37:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 14:37:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 14:37:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-26 14:37:59,580 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-26 14:37:59,580 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-26 14:37:59,580 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-26 14:37:59,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 14:37:59,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-26 14:37:59,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 14:37:59,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 14:37:59,582 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-26 14:37:59,856 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 14:37:59,856 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-26 14:37:59,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:37:59 BoogieIcfgContainer [2021-08-26 14:37:59,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 14:37:59,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 14:37:59,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 14:37:59,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 14:37:59,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:37:58" (1/3) ... [2021-08-26 14:37:59,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa0af74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:37:59, skipping insertion in model container [2021-08-26 14:37:59,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:37:59" (2/3) ... [2021-08-26 14:37:59,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa0af74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:37:59, skipping insertion in model container [2021-08-26 14:37:59,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:37:59" (3/3) ... [2021-08-26 14:37:59,863 INFO L111 eAbstractionObserver]: Analyzing ICFG safe010_tso.opt.i [2021-08-26 14:37:59,866 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-26 14:37:59,867 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 14:37:59,867 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 14:37:59,867 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-26 14:37:59,887 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,888 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,888 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,892 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,892 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,893 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,893 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,893 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,894 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,894 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,894 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,894 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,895 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,895 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,895 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,895 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,895 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,896 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,896 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,896 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,896 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,897 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,897 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,897 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,900 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,900 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,900 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,900 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,905 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,905 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,905 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,905 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:37:59,907 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-26 14:37:59,938 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 14:37:59,943 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-26 14:37:59,943 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-26 14:37:59,953 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-26 14:37:59,961 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 66 transitions, 142 flow [2021-08-26 14:37:59,964 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 66 transitions, 142 flow [2021-08-26 14:37:59,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 66 transitions, 142 flow [2021-08-26 14:38:00,014 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2021-08-26 14:38:00,015 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-26 14:38:00,020 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-08-26 14:38:00,022 INFO L116 LiptonReduction]: Number of co-enabled transitions 756 [2021-08-26 14:38:02,174 INFO L131 LiptonReduction]: Checked pairs total: 1287 [2021-08-26 14:38:02,174 INFO L133 LiptonReduction]: Total number of compositions: 58 [2021-08-26 14:38:02,183 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2021-08-26 14:38:02,193 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 74 states, 73 states have (on average 2.410958904109589) internal successors, (176), 73 states have internal predecessors, (176), 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) [2021-08-26 14:38:02,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 73 states have (on average 2.410958904109589) internal successors, (176), 73 states have internal predecessors, (176), 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) [2021-08-26 14:38:02,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 14:38:02,199 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:38:02,199 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 14:38:02,200 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-26 14:38:02,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:38:02,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1456741025, now seen corresponding path program 1 times [2021-08-26 14:38:02,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:38:02,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804420048] [2021-08-26 14:38:02,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:38:02,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:38:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:38:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:38:02,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:38:02,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804420048] [2021-08-26 14:38:02,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804420048] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:38:02,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:38:02,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 14:38:02,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815871529] [2021-08-26 14:38:02,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 14:38:02,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:38:02,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 14:38:02,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 14:38:02,401 INFO L87 Difference]: Start difference. First operand has 74 states, 73 states have (on average 2.410958904109589) internal successors, (176), 73 states have internal predecessors, (176), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-08-26 14:38:02,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:38:02,411 INFO L93 Difference]: Finished difference Result 74 states and 160 transitions. [2021-08-26 14:38:02,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 14:38:02,412 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2021-08-26 14:38:02,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:38:02,418 INFO L225 Difference]: With dead ends: 74 [2021-08-26 14:38:02,419 INFO L226 Difference]: Without dead ends: 74 [2021-08-26 14:38:02,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 14:38:02,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-08-26 14:38:02,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-08-26 14:38:02,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.191780821917808) internal successors, (160), 73 states have internal predecessors, (160), 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) [2021-08-26 14:38:02,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2021-08-26 14:38:02,447 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2021-08-26 14:38:02,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:38:02,448 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2021-08-26 14:38:02,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-08-26 14:38:02,448 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2021-08-26 14:38:02,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 14:38:02,449 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:38:02,449 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:38:02,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 14:38:02,450 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-26 14:38:02,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:38:02,450 INFO L82 PathProgramCache]: Analyzing trace with hash 2085655470, now seen corresponding path program 1 times [2021-08-26 14:38:02,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:38:02,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203416658] [2021-08-26 14:38:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:38:02,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:38:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:38:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:38:02,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:38:02,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203416658] [2021-08-26 14:38:02,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203416658] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:38:02,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:38:02,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 14:38:02,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761906091] [2021-08-26 14:38:02,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 14:38:02,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:38:02,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 14:38:02,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:38:02,563 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-08-26 14:38:02,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:38:02,603 INFO L93 Difference]: Finished difference Result 118 states and 232 transitions. [2021-08-26 14:38:02,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 14:38:02,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) Word has length 7 [2021-08-26 14:38:02,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:38:02,607 INFO L225 Difference]: With dead ends: 118 [2021-08-26 14:38:02,607 INFO L226 Difference]: Without dead ends: 84 [2021-08-26 14:38:02,608 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:38:02,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-26 14:38:02,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2021-08-26 14:38:02,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.056338028169014) internal successors, (146), 71 states have internal predecessors, (146), 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) [2021-08-26 14:38:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 146 transitions. [2021-08-26 14:38:02,620 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 146 transitions. Word has length 7 [2021-08-26 14:38:02,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:38:02,620 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 146 transitions. [2021-08-26 14:38:02,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-08-26 14:38:02,620 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 146 transitions. [2021-08-26 14:38:02,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 14:38:02,621 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:38:02,621 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:38:02,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 14:38:02,622 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-26 14:38:02,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:38:02,623 INFO L82 PathProgramCache]: Analyzing trace with hash 250794568, now seen corresponding path program 1 times [2021-08-26 14:38:02,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:38:02,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334490327] [2021-08-26 14:38:02,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:38:02,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:38:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:38:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:38:02,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:38:02,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334490327] [2021-08-26 14:38:02,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334490327] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:38:02,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:38:02,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 14:38:02,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627124141] [2021-08-26 14:38:02,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 14:38:02,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:38:02,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 14:38:02,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:38:02,716 INFO L87 Difference]: Start difference. First operand 72 states and 146 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-08-26 14:38:02,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:38:02,729 INFO L93 Difference]: Finished difference Result 78 states and 150 transitions. [2021-08-26 14:38:02,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 14:38:02,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2021-08-26 14:38:02,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:38:02,730 INFO L225 Difference]: With dead ends: 78 [2021-08-26 14:38:02,730 INFO L226 Difference]: Without dead ends: 66 [2021-08-26 14:38:02,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:38:02,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-26 14:38:02,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-08-26 14:38:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.0) internal successors, (130), 65 states have internal predecessors, (130), 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) [2021-08-26 14:38:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 130 transitions. [2021-08-26 14:38:02,735 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 130 transitions. Word has length 8 [2021-08-26 14:38:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:38:02,736 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 130 transitions. [2021-08-26 14:38:02,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-08-26 14:38:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 130 transitions. [2021-08-26 14:38:02,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 14:38:02,737 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:38:02,737 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:38:02,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 14:38:02,737 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-26 14:38:02,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:38:02,738 INFO L82 PathProgramCache]: Analyzing trace with hash 230779821, now seen corresponding path program 1 times [2021-08-26 14:38:02,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:38:02,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907431439] [2021-08-26 14:38:02,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:38:02,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:38:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:38:02,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:38:02,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:38:02,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907431439] [2021-08-26 14:38:02,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907431439] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:38:02,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:38:02,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 14:38:02,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481983586] [2021-08-26 14:38:02,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 14:38:02,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:38:02,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 14:38:02,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 14:38:02,819 INFO L87 Difference]: Start difference. First operand 66 states and 130 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-08-26 14:38:02,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:38:02,865 INFO L93 Difference]: Finished difference Result 90 states and 161 transitions. [2021-08-26 14:38:02,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 14:38:02,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) Word has length 8 [2021-08-26 14:38:02,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:38:02,866 INFO L225 Difference]: With dead ends: 90 [2021-08-26 14:38:02,867 INFO L226 Difference]: Without dead ends: 72 [2021-08-26 14:38:02,867 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 28.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-08-26 14:38:02,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-08-26 14:38:02,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2021-08-26 14:38:02,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.9661016949152543) internal successors, (116), 59 states have internal predecessors, (116), 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) [2021-08-26 14:38:02,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 116 transitions. [2021-08-26 14:38:02,873 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 116 transitions. Word has length 8 [2021-08-26 14:38:02,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:38:02,873 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 116 transitions. [2021-08-26 14:38:02,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-08-26 14:38:02,874 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 116 transitions. [2021-08-26 14:38:02,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 14:38:02,874 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:38:02,874 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:38:02,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 14:38:02,875 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-26 14:38:02,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:38:02,876 INFO L82 PathProgramCache]: Analyzing trace with hash -815333293, now seen corresponding path program 1 times [2021-08-26 14:38:02,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:38:02,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910711057] [2021-08-26 14:38:02,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:38:02,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:38:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:38:02,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:38:02,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:38:02,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910711057] [2021-08-26 14:38:02,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910711057] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:38:02,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:38:02,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 14:38:02,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137185137] [2021-08-26 14:38:02,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 14:38:02,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:38:02,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 14:38:02,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:38:02,921 INFO L87 Difference]: Start difference. First operand 60 states and 116 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-08-26 14:38:02,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:38:02,947 INFO L93 Difference]: Finished difference Result 67 states and 121 transitions. [2021-08-26 14:38:02,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 14:38:02,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9 [2021-08-26 14:38:02,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:38:02,948 INFO L225 Difference]: With dead ends: 67 [2021-08-26 14:38:02,948 INFO L226 Difference]: Without dead ends: 34 [2021-08-26 14:38:02,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-26 14:38:02,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-26 14:38:02,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-08-26 14:38:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.696969696969697) internal successors, (56), 33 states have internal predecessors, (56), 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) [2021-08-26 14:38:02,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 56 transitions. [2021-08-26 14:38:02,951 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 56 transitions. Word has length 9 [2021-08-26 14:38:02,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:38:02,951 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 56 transitions. [2021-08-26 14:38:02,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-08-26 14:38:02,952 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 56 transitions. [2021-08-26 14:38:02,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 14:38:02,952 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:38:02,952 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:38:02,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-26 14:38:02,953 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-26 14:38:02,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:38:02,953 INFO L82 PathProgramCache]: Analyzing trace with hash 493577445, now seen corresponding path program 1 times [2021-08-26 14:38:02,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:38:02,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234671855] [2021-08-26 14:38:02,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:38:02,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:38:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:38:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:38:03,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:38:03,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234671855] [2021-08-26 14:38:03,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234671855] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:38:03,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:38:03,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 14:38:03,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122574711] [2021-08-26 14:38:03,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 14:38:03,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:38:03,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 14:38:03,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:38:03,021 INFO L87 Difference]: Start difference. First operand 34 states and 56 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-08-26 14:38:03,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:38:03,036 INFO L93 Difference]: Finished difference Result 30 states and 43 transitions. [2021-08-26 14:38:03,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 14:38:03,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) Word has length 10 [2021-08-26 14:38:03,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:38:03,037 INFO L225 Difference]: With dead ends: 30 [2021-08-26 14:38:03,037 INFO L226 Difference]: Without dead ends: 24 [2021-08-26 14:38:03,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:38:03,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-08-26 14:38:03,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-08-26 14:38:03,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 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) [2021-08-26 14:38:03,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2021-08-26 14:38:03,041 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 10 [2021-08-26 14:38:03,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:38:03,042 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2021-08-26 14:38:03,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-08-26 14:38:03,042 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2021-08-26 14:38:03,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 14:38:03,042 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:38:03,042 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:38:03,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-26 14:38:03,043 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-26 14:38:03,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:38:03,043 INFO L82 PathProgramCache]: Analyzing trace with hash 892009993, now seen corresponding path program 1 times [2021-08-26 14:38:03,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:38:03,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739957358] [2021-08-26 14:38:03,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:38:03,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:38:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:38:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:38:03,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:38:03,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739957358] [2021-08-26 14:38:03,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739957358] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:38:03,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:38:03,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 14:38:03,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994909620] [2021-08-26 14:38:03,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 14:38:03,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:38:03,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 14:38:03,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:38:03,125 INFO L87 Difference]: Start difference. First operand 24 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-08-26 14:38:03,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:38:03,136 INFO L93 Difference]: Finished difference Result 18 states and 25 transitions. [2021-08-26 14:38:03,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 14:38:03,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) Word has length 11 [2021-08-26 14:38:03,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:38:03,137 INFO L225 Difference]: With dead ends: 18 [2021-08-26 14:38:03,137 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 14:38:03,137 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.4ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 14:38:03,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 14:38:03,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 14:38:03,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-26 14:38:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 14:38:03,138 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-08-26 14:38:03,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:38:03,138 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 14:38:03,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-08-26 14:38:03,138 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 14:38:03,138 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 14:38:03,140 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 14:38:03,141 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-26 14:38:03,141 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-26 14:38:03,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-26 14:38:03,144 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-26 14:38:03,144 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 14:38:03,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 02:38:03 BasicIcfg [2021-08-26 14:38:03,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 14:38:03,146 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 14:38:03,146 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 14:38:03,146 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 14:38:03,147 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:37:59" (3/4) ... [2021-08-26 14:38:03,149 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 14:38:03,154 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-08-26 14:38:03,154 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-08-26 14:38:03,157 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-08-26 14:38:03,158 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 14:38:03,158 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 14:38:03,158 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 14:38:03,180 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 14:38:03,181 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 14:38:03,182 INFO L168 Benchmark]: Toolchain (without parser) took 4332.73 ms. Allocated memory was 54.5 MB in the beginning and 98.6 MB in the end (delta: 44.0 MB). Free memory was 36.2 MB in the beginning and 63.4 MB in the end (delta: -27.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-08-26 14:38:03,182 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 44.0 MB. Free memory was 26.5 MB in the beginning and 26.5 MB in the end (delta: 53.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 14:38:03,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 554.61 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 28.6 MB in the end (delta: 7.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2021-08-26 14:38:03,183 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.32 ms. Allocated memory is still 54.5 MB. Free memory was 28.5 MB in the beginning and 26.6 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 14:38:03,183 INFO L168 Benchmark]: Boogie Preprocessor took 46.25 ms. Allocated memory is still 54.5 MB. Free memory was 26.6 MB in the beginning and 37.4 MB in the end (delta: -10.8 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2021-08-26 14:38:03,184 INFO L168 Benchmark]: RCFGBuilder took 351.32 ms. Allocated memory is still 54.5 MB. Free memory was 37.4 MB in the beginning and 28.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-08-26 14:38:03,184 INFO L168 Benchmark]: TraceAbstraction took 3286.69 ms. Allocated memory was 54.5 MB in the beginning and 98.6 MB in the end (delta: 44.0 MB). Free memory was 27.8 MB in the beginning and 66.7 MB in the end (delta: -38.9 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-08-26 14:38:03,184 INFO L168 Benchmark]: Witness Printer took 34.58 ms. Allocated memory is still 98.6 MB. Free memory was 66.7 MB in the beginning and 63.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 14:38:03,186 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 44.0 MB. Free memory was 26.5 MB in the beginning and 26.5 MB in the end (delta: 53.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 554.61 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 28.6 MB in the end (delta: 7.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.32 ms. Allocated memory is still 54.5 MB. Free memory was 28.5 MB in the beginning and 26.6 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.25 ms. Allocated memory is still 54.5 MB. Free memory was 26.6 MB in the beginning and 37.4 MB in the end (delta: -10.8 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 351.32 ms. Allocated memory is still 54.5 MB. Free memory was 37.4 MB in the beginning and 28.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3286.69 ms. Allocated memory was 54.5 MB in the beginning and 98.6 MB in the end (delta: 44.0 MB). Free memory was 27.8 MB in the beginning and 66.7 MB in the end (delta: -38.9 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * Witness Printer took 34.58 ms. Allocated memory is still 98.6 MB. Free memory was 66.7 MB in the beginning and 63.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2210.4ms, 71 PlacesBefore, 23 PlacesAfterwards, 66 TransitionsBefore, 17 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 58 TotalNumberOfCompositions, 1287 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 768, positive: 706, positive conditional: 0, positive unconditional: 706, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 509, positive: 490, positive conditional: 0, positive unconditional: 490, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 509, positive: 487, positive conditional: 0, positive unconditional: 487, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 22, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 42, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 768, positive: 216, positive conditional: 0, positive unconditional: 216, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 509, unknown conditional: 0, unknown unconditional: 509] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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 5 procedures, 81 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3207.3ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 9.3ms, AutomataDifference: 204.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2249.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 111 SDtfs, 93 SDslu, 122 SDs, 0 SdLazy, 58 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 54.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 106.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 44.9ms AutomataMinimizationTime, 7 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.0ms SsaConstructionTime, 149.8ms SatisfiabilityAnalysisTime, 360.7ms InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 229 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! [2021-08-26 14:38:03,215 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...