./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/safe000_tso.oepc.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 7b9ee3f88e8f44d2d06ff193dda062789325bd80 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 22:20:00,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 22:20:00,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 22:20:00,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 22:20:00,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 22:20:00,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 22:20:00,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 22:20:00,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 22:20:00,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 22:20:00,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 22:20:00,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 22:20:00,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 22:20:00,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 22:20:00,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 22:20:00,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 22:20:00,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 22:20:00,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 22:20:00,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 22:20:00,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 22:20:00,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 22:20:00,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 22:20:00,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 22:20:00,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 22:20:00,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 22:20:00,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 22:20:00,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 22:20:00,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 22:20:00,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 22:20:00,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 22:20:00,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 22:20:00,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 22:20:00,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 22:20:00,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 22:20:00,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 22:20:00,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 22:20:00,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 22:20:00,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 22:20:00,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 22:20:00,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 22:20:00,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 22:20:00,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 22:20:00,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 22:20:00,698 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 22:20:00,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 22:20:00,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 22:20:00,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 22:20:00,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 22:20:00,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 22:20:00,700 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 22:20:00,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 22:20:00,700 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 22:20:00,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 22:20:00,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 22:20:00,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 22:20:00,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 22:20:00,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 22:20:00,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 22:20:00,701 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 22:20:00,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 22:20:00,701 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 22:20:00,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 22:20:00,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 22:20:00,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 22:20:00,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 22:20:00,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:20:00,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 22:20:00,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 22:20:00,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 22:20:00,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 22:20:00,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 22:20:00,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 22:20:00,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 22:20:00,702 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b9ee3f88e8f44d2d06ff193dda062789325bd80 [2021-08-29 22:20:00,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 22:20:00,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 22:20:00,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 22:20:00,976 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 22:20:00,978 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 22:20:00,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i [2021-08-29 22:20:01,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a6b2bc54/be95924a709e40e2b72a546cdc1bb6d4/FLAG024844b56 [2021-08-29 22:20:01,461 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 22:20:01,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i [2021-08-29 22:20:01,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a6b2bc54/be95924a709e40e2b72a546cdc1bb6d4/FLAG024844b56 [2021-08-29 22:20:01,489 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a6b2bc54/be95924a709e40e2b72a546cdc1bb6d4 [2021-08-29 22:20:01,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 22:20:01,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 22:20:01,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 22:20:01,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 22:20:01,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 22:20:01,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:20:01" (1/1) ... [2021-08-29 22:20:01,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3e07be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:20:01, skipping insertion in model container [2021-08-29 22:20:01,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:20:01" (1/1) ... [2021-08-29 22:20:01,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 22:20:01,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 22:20:01,649 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/safe000_tso.oepc.i[950,963] [2021-08-29 22:20:01,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:20:01,777 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 22:20:01,787 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/safe000_tso.oepc.i[950,963] [2021-08-29 22:20:01,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:20:01,864 INFO L208 MainTranslator]: Completed translation [2021-08-29 22:20:01,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:20:01 WrapperNode [2021-08-29 22:20:01,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 22:20:01,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 22:20:01,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 22:20:01,867 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 22:20:01,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:20:01" (1/1) ... [2021-08-29 22:20:01,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:20:01" (1/1) ... [2021-08-29 22:20:01,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 22:20:01,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 22:20:01,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 22:20:01,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 22:20:01,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:20:01" (1/1) ... [2021-08-29 22:20:01,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:20:01" (1/1) ... [2021-08-29 22:20:01,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:20:01" (1/1) ... [2021-08-29 22:20:01,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:20:01" (1/1) ... [2021-08-29 22:20:01,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:20:01" (1/1) ... [2021-08-29 22:20:01,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:20:01" (1/1) ... [2021-08-29 22:20:01,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:20:01" (1/1) ... [2021-08-29 22:20:01,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 22:20:01,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 22:20:01,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 22:20:01,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 22:20:01,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:20:01" (1/1) ... [2021-08-29 22:20:01,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:20:01,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:20:01,975 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) [2021-08-29 22:20:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 22:20:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-29 22:20:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 22:20:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 22:20:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-29 22:20:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-29 22:20:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-29 22:20:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-29 22:20:02,004 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-29 22:20:02,004 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-29 22:20:02,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 22:20:02,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-29 22:20:02,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 22:20:02,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 22:20:01,996 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 [2021-08-29 22:20:02,005 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-29 22:20:02,186 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 22:20:02,186 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-29 22:20:02,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:20:02 BoogieIcfgContainer [2021-08-29 22:20:02,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 22:20:02,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 22:20:02,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 22:20:02,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 22:20:02,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:20:01" (1/3) ... [2021-08-29 22:20:02,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f07a226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:20:02, skipping insertion in model container [2021-08-29 22:20:02,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:20:01" (2/3) ... [2021-08-29 22:20:02,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f07a226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:20:02, skipping insertion in model container [2021-08-29 22:20:02,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:20:02" (3/3) ... [2021-08-29 22:20:02,192 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_tso.oepc.i [2021-08-29 22:20:02,195 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-29 22:20:02,195 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 22:20:02,195 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 22:20:02,196 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-29 22:20:02,225 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,225 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,225 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,226 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,226 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,226 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,226 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,226 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,226 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,226 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,226 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,226 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,227 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,227 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,228 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,228 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,229 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,229 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,232 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,232 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,232 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,232 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,233 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,233 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,233 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,233 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,233 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,233 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,233 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,233 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,234 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,234 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,234 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,234 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,237 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,237 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,237 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,237 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,241 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,241 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,241 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,242 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,243 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,243 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,243 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,243 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:20:02,244 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-29 22:20:02,278 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 22:20:02,284 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 [2021-08-29 22:20:02,284 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-29 22:20:02,303 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-29 22:20:02,314 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 84 transitions, 183 flow [2021-08-29 22:20:02,316 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 84 transitions, 183 flow [2021-08-29 22:20:02,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-08-29 22:20:02,366 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-08-29 22:20:02,367 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-29 22:20:02,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-08-29 22:20:02,372 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-08-29 22:20:04,577 INFO L131 LiptonReduction]: Checked pairs total: 2964 [2021-08-29 22:20:04,577 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-08-29 22:20:04,584 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-08-29 22:20:04,617 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 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) [2021-08-29 22:20:04,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 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) [2021-08-29 22:20:04,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 22:20:04,626 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:20:04,626 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:20:04,627 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:20:04,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:20:04,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1631224648, now seen corresponding path program 1 times [2021-08-29 22:20:04,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:20:04,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824257916] [2021-08-29 22:20:04,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:20:04,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:20:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:20:04,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:20:04,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:20:04,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824257916] [2021-08-29 22:20:04,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824257916] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:20:04,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:20:04,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-29 22:20:04,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668486788] [2021-08-29 22:20:04,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:20:04,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:20:04,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:20:04,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:20:04,810 INFO L87 Difference]: Start difference. First operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 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 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-08-29 22:20:04,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:20:04,837 INFO L93 Difference]: Finished difference Result 218 states and 600 transitions. [2021-08-29 22:20:04,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:20:04,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 [2021-08-29 22:20:04,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:20:04,846 INFO L225 Difference]: With dead ends: 218 [2021-08-29 22:20:04,846 INFO L226 Difference]: Without dead ends: 218 [2021-08-29 22:20:04,846 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:20:04,848 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.40ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.35ms IncrementalHoareTripleChecker+Time [2021-08-29 22:20:04,849 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 17 Invalid, 11 Unknown, 0 Unchecked, 0.40ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 11.35ms Time] [2021-08-29 22:20:04,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-08-29 22:20:04,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-08-29 22:20:04,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.7649769585253456) internal successors, (600), 217 states have internal predecessors, (600), 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) [2021-08-29 22:20:04,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2021-08-29 22:20:04,881 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2021-08-29 22:20:04,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:20:04,882 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2021-08-29 22:20:04,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-08-29 22:20:04,882 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2021-08-29 22:20:04,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 22:20:04,883 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:20:04,883 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:20:04,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 22:20:04,883 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:20:04,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:20:04,884 INFO L82 PathProgramCache]: Analyzing trace with hash -971671350, now seen corresponding path program 1 times [2021-08-29 22:20:04,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:20:04,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876590623] [2021-08-29 22:20:04,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:20:04,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:20:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:20:04,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:20:04,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:20:04,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876590623] [2021-08-29 22:20:04,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876590623] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:20:04,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:20:04,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:20:04,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37088973] [2021-08-29 22:20:04,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:20:04,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:20:04,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:20:04,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:20:04,961 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2021-08-29 22:20:04,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:20:04,992 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2021-08-29 22:20:04,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:20:04,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2021-08-29 22:20:04,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:20:04,993 INFO L225 Difference]: With dead ends: 242 [2021-08-29 22:20:04,993 INFO L226 Difference]: Without dead ends: 146 [2021-08-29 22:20:04,994 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.74ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:20:04,994 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.51ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.87ms IncrementalHoareTripleChecker+Time [2021-08-29 22:20:04,995 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 20 Invalid, 21 Unknown, 0 Unchecked, 0.51ms Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 21.87ms Time] [2021-08-29 22:20:04,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-08-29 22:20:05,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-08-29 22:20:05,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.496551724137931) internal successors, (362), 145 states have internal predecessors, (362), 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) [2021-08-29 22:20:05,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2021-08-29 22:20:05,001 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2021-08-29 22:20:05,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:20:05,001 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2021-08-29 22:20:05,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2021-08-29 22:20:05,002 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2021-08-29 22:20:05,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 22:20:05,002 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:20:05,002 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:20:05,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 22:20:05,003 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:20:05,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:20:05,003 INFO L82 PathProgramCache]: Analyzing trace with hash 352310830, now seen corresponding path program 1 times [2021-08-29 22:20:05,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:20:05,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073156016] [2021-08-29 22:20:05,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:20:05,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:20:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:20:05,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:20:05,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:20:05,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073156016] [2021-08-29 22:20:05,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073156016] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:20:05,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:20:05,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:20:05,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172306577] [2021-08-29 22:20:05,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:20:05,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:20:05,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:20:05,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:20:05,089 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-08-29 22:20:05,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:20:05,114 INFO L93 Difference]: Finished difference Result 176 states and 433 transitions. [2021-08-29 22:20:05,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:20:05,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2021-08-29 22:20:05,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:20:05,116 INFO L225 Difference]: With dead ends: 176 [2021-08-29 22:20:05,116 INFO L226 Difference]: Without dead ends: 176 [2021-08-29 22:20:05,116 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.57ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:20:05,117 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.40ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.58ms IncrementalHoareTripleChecker+Time [2021-08-29 22:20:05,117 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 22 Invalid, 22 Unknown, 0 Unchecked, 0.40ms Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 20.58ms Time] [2021-08-29 22:20:05,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-08-29 22:20:05,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 152. [2021-08-29 22:20:05,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.4834437086092715) internal successors, (375), 151 states have internal predecessors, (375), 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) [2021-08-29 22:20:05,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 375 transitions. [2021-08-29 22:20:05,124 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 375 transitions. Word has length 11 [2021-08-29 22:20:05,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:20:05,125 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 375 transitions. [2021-08-29 22:20:05,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-08-29 22:20:05,125 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 375 transitions. [2021-08-29 22:20:05,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 22:20:05,126 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:20:05,126 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:20:05,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 22:20:05,126 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:20:05,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:20:05,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1963292122, now seen corresponding path program 1 times [2021-08-29 22:20:05,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:20:05,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910547824] [2021-08-29 22:20:05,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:20:05,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:20:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:20:05,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:20:05,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:20:05,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910547824] [2021-08-29 22:20:05,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910547824] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:20:05,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:20:05,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:20:05,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030137550] [2021-08-29 22:20:05,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:20:05,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:20:05,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:20:05,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:20:05,198 INFO L87 Difference]: Start difference. First operand 152 states and 375 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-08-29 22:20:05,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:20:05,219 INFO L93 Difference]: Finished difference Result 146 states and 356 transitions. [2021-08-29 22:20:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:20:05,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-08-29 22:20:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:20:05,220 INFO L225 Difference]: With dead ends: 146 [2021-08-29 22:20:05,221 INFO L226 Difference]: Without dead ends: 146 [2021-08-29 22:20:05,221 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.51ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:20:05,222 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.36ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.59ms IncrementalHoareTripleChecker+Time [2021-08-29 22:20:05,222 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 21 Invalid, 24 Unknown, 0 Unchecked, 0.36ms Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 18.59ms Time] [2021-08-29 22:20:05,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-08-29 22:20:05,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 134. [2021-08-29 22:20:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.43609022556391) internal successors, (324), 133 states have internal predecessors, (324), 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) [2021-08-29 22:20:05,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2021-08-29 22:20:05,227 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 12 [2021-08-29 22:20:05,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:20:05,227 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2021-08-29 22:20:05,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-08-29 22:20:05,228 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2021-08-29 22:20:05,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 22:20:05,229 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:20:05,229 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:20:05,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 22:20:05,229 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:20:05,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:20:05,230 INFO L82 PathProgramCache]: Analyzing trace with hash 2018901392, now seen corresponding path program 1 times [2021-08-29 22:20:05,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:20:05,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793621454] [2021-08-29 22:20:05,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:20:05,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:20:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:20:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:20:05,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:20:05,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793621454] [2021-08-29 22:20:05,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793621454] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:20:05,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:20:05,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:20:05,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115803728] [2021-08-29 22:20:05,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:20:05,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:20:05,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:20:05,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:20:05,281 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-08-29 22:20:05,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:20:05,308 INFO L93 Difference]: Finished difference Result 206 states and 498 transitions. [2021-08-29 22:20:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:20:05,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-08-29 22:20:05,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:20:05,310 INFO L225 Difference]: With dead ends: 206 [2021-08-29 22:20:05,310 INFO L226 Difference]: Without dead ends: 116 [2021-08-29 22:20:05,310 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.71ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:20:05,311 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.50ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.95ms IncrementalHoareTripleChecker+Time [2021-08-29 22:20:05,311 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 29 Invalid, 29 Unknown, 0 Unchecked, 0.50ms Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 20.95ms Time] [2021-08-29 22:20:05,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-29 22:20:05,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 104. [2021-08-29 22:20:05,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.3883495145631066) internal successors, (246), 103 states have internal predecessors, (246), 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) [2021-08-29 22:20:05,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2021-08-29 22:20:05,319 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 13 [2021-08-29 22:20:05,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:20:05,319 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2021-08-29 22:20:05,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-08-29 22:20:05,319 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2021-08-29 22:20:05,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 22:20:05,320 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:20:05,320 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:20:05,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 22:20:05,320 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:20:05,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:20:05,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1904814066, now seen corresponding path program 2 times [2021-08-29 22:20:05,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:20:05,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496205680] [2021-08-29 22:20:05,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:20:05,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:20:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:20:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:20:05,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:20:05,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496205680] [2021-08-29 22:20:05,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496205680] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:20:05,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:20:05,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:20:05,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629723056] [2021-08-29 22:20:05,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:20:05,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:20:05,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:20:05,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:20:05,400 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-08-29 22:20:05,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:20:05,423 INFO L93 Difference]: Finished difference Result 128 states and 298 transitions. [2021-08-29 22:20:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:20:05,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2021-08-29 22:20:05,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:20:05,423 INFO L225 Difference]: With dead ends: 128 [2021-08-29 22:20:05,424 INFO L226 Difference]: Without dead ends: 68 [2021-08-29 22:20:05,424 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.82ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:20:05,424 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.51ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.33ms IncrementalHoareTripleChecker+Time [2021-08-29 22:20:05,425 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 33 Invalid, 33 Unknown, 0 Unchecked, 0.51ms Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 17.33ms Time] [2021-08-29 22:20:05,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-08-29 22:20:05,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-08-29 22:20:05,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.1492537313432836) internal successors, (144), 67 states have internal predecessors, (144), 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) [2021-08-29 22:20:05,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2021-08-29 22:20:05,427 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2021-08-29 22:20:05,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:20:05,427 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2021-08-29 22:20:05,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-08-29 22:20:05,428 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2021-08-29 22:20:05,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 22:20:05,428 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:20:05,428 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:20:05,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 22:20:05,428 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:20:05,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:20:05,429 INFO L82 PathProgramCache]: Analyzing trace with hash -733671660, now seen corresponding path program 3 times [2021-08-29 22:20:05,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:20:05,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650640959] [2021-08-29 22:20:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:20:05,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:20:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:20:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:20:05,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:20:05,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650640959] [2021-08-29 22:20:05,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650640959] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:20:05,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:20:05,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:20:05,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790422269] [2021-08-29 22:20:05,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:20:05,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:20:05,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:20:05,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:20:05,474 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-08-29 22:20:05,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:20:05,484 INFO L93 Difference]: Finished difference Result 56 states and 112 transitions. [2021-08-29 22:20:05,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:20:05,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-08-29 22:20:05,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:20:05,485 INFO L225 Difference]: With dead ends: 56 [2021-08-29 22:20:05,485 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 22:20:05,485 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.14ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:20:05,486 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.22ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.97ms IncrementalHoareTripleChecker+Time [2021-08-29 22:20:05,486 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 13 Invalid, 11 Unknown, 0 Unchecked, 0.22ms Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 5.97ms Time] [2021-08-29 22:20:05,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 22:20:05,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 22:20:05,486 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) [2021-08-29 22:20:05,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 22:20:05,487 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-08-29 22:20:05,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:20:05,487 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 22:20:05,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-08-29 22:20:05,487 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 22:20:05,487 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 22:20:05,489 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-08-29 22:20:05,489 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-08-29 22:20:05,489 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-08-29 22:20:05,489 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-08-29 22:20:05,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 22:20:05,491 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-29 22:20:05,492 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 22:20:05,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:20:05 BasicIcfg [2021-08-29 22:20:05,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 22:20:05,494 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 22:20:05,494 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 22:20:05,494 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 22:20:05,494 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:20:02" (3/4) ... [2021-08-29 22:20:05,496 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 22:20:05,500 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-08-29 22:20:05,500 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-08-29 22:20:05,500 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-08-29 22:20:05,503 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-08-29 22:20:05,503 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 22:20:05,503 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:20:05,503 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:20:05,522 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 22:20:05,522 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 22:20:05,523 INFO L158 Benchmark]: Toolchain (without parser) took 4030.86ms. Allocated memory was 52.4MB in the beginning and 98.6MB in the end (delta: 46.1MB). Free memory was 29.0MB in the beginning and 57.7MB in the end (delta: -28.7MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2021-08-29 22:20:05,523 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 52.4MB. Free memory was 34.6MB in the beginning and 34.6MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:20:05,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.35ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 28.7MB in the beginning and 40.9MB in the end (delta: -12.1MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2021-08-29 22:20:05,523 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.92ms. Allocated memory is still 67.1MB. Free memory was 40.7MB in the beginning and 38.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:20:05,523 INFO L158 Benchmark]: Boogie Preprocessor took 41.25ms. Allocated memory is still 67.1MB. Free memory was 38.7MB in the beginning and 37.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:20:05,524 INFO L158 Benchmark]: RCFGBuilder took 232.08ms. Allocated memory is still 67.1MB. Free memory was 37.4MB in the beginning and 43.6MB in the end (delta: -6.2MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2021-08-29 22:20:05,524 INFO L158 Benchmark]: TraceAbstraction took 3304.80ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 43.4MB in the beginning and 61.1MB in the end (delta: -17.7MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2021-08-29 22:20:05,524 INFO L158 Benchmark]: Witness Printer took 28.75ms. Allocated memory is still 98.6MB. Free memory was 61.1MB in the beginning and 57.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 22:20:05,525 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 52.4MB. Free memory was 34.6MB in the beginning and 34.6MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 370.35ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 28.7MB in the beginning and 40.9MB in the end (delta: -12.1MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.92ms. Allocated memory is still 67.1MB. Free memory was 40.7MB in the beginning and 38.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.25ms. Allocated memory is still 67.1MB. Free memory was 38.7MB in the beginning and 37.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 232.08ms. Allocated memory is still 67.1MB. Free memory was 37.4MB in the beginning and 43.6MB in the end (delta: -6.2MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3304.80ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 43.4MB in the beginning and 61.1MB in the end (delta: -17.7MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * Witness Printer took 28.75ms. Allocated memory is still 98.6MB. Free memory was 61.1MB in the beginning and 57.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2261.40ms, 92 PlacesBefore, 31 PlacesAfterwards, 84 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2964 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1563, positive: 1456, positive conditional: 0, positive unconditional: 1456, negative: 107, negative conditional: 0, negative unconditional: 107, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 983, positive: 932, positive conditional: 0, positive unconditional: 932, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 983, positive: 919, positive conditional: 0, positive unconditional: 919, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 64, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 117, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 90, negative conditional: 0, negative unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1563, positive: 524, positive conditional: 0, positive unconditional: 524, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 983, unknown conditional: 0, unknown unconditional: 983] , Statistics on independence cache: Total cache size (in pairs): 77, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms 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, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3214.09ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 11.99ms, AutomataDifference: 216.43ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 2333.41ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 148 SdHoareTripleChecker+Valid, 116.64ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 148 mSDsluCounter, 155 SdHoareTripleChecker+Invalid, 84.72ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 115 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 134 IncrementalHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 78 mSDtfsCounter, 134 mSolverCounterSat, 2.90ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.98ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=0, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 51.21ms AutomataMinimizationTime, 7 MinimizatonAttempts, 48 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.48ms SsaConstructionTime, 133.53ms SatisfiabilityAnalysisTime, 312.02ms InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 336 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! [2021-08-29 22:20:05,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...