./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe023_tso.opt.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/safe023_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d3cc59967c9878975720f1b2e67b62ec3484487d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 22:23:51,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 22:23:51,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 22:23:51,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 22:23:51,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 22:23:51,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 22:23:51,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 22:23:51,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 22:23:51,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 22:23:51,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 22:23:51,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 22:23:51,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 22:23:51,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 22:23:51,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 22:23:51,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 22:23:51,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 22:23:51,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 22:23:51,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 22:23:51,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 22:23:51,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 22:23:51,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 22:23:51,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 22:23:51,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 22:23:51,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 22:23:51,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 22:23:51,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 22:23:51,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 22:23:51,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 22:23:51,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 22:23:51,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 22:23:51,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 22:23:51,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 22:23:51,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 22:23:51,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 22:23:51,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 22:23:51,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 22:23:51,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 22:23:51,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 22:23:51,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 22:23:51,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 22:23:51,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 22:23:51,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 22:23:51,961 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 22:23:51,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 22:23:51,962 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 22:23:51,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 22:23:51,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 22:23:51,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 22:23:51,964 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 22:23:51,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 22:23:51,964 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 22:23:51,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 22:23:51,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 22:23:51,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 22:23:51,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 22:23:51,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 22:23:51,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 22:23:51,965 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 22:23:51,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 22:23:51,965 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 22:23:51,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 22:23:51,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 22:23:51,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 22:23:51,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 22:23:51,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:23:51,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 22:23:51,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 22:23:51,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 22:23:51,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 22:23:51,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 22:23:51,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 22:23:51,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 22:23:51,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3cc59967c9878975720f1b2e67b62ec3484487d [2021-08-29 22:23:52,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 22:23:52,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 22:23:52,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 22:23:52,230 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 22:23:52,230 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 22:23:52,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe023_tso.opt.i [2021-08-29 22:23:52,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/759a78ab7/c352c4cd57ea40a48be71431e258252b/FLAGcc7960c84 [2021-08-29 22:23:52,828 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 22:23:52,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe023_tso.opt.i [2021-08-29 22:23:52,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/759a78ab7/c352c4cd57ea40a48be71431e258252b/FLAGcc7960c84 [2021-08-29 22:23:53,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/759a78ab7/c352c4cd57ea40a48be71431e258252b [2021-08-29 22:23:53,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 22:23:53,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 22:23:53,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 22:23:53,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 22:23:53,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 22:23:53,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:23:53" (1/1) ... [2021-08-29 22:23:53,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ca7ffe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:53, skipping insertion in model container [2021-08-29 22:23:53,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:23:53" (1/1) ... [2021-08-29 22:23:53,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 22:23:53,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 22:23:53,483 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/safe023_tso.opt.i[949,962] [2021-08-29 22:23:53,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:23:53,621 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 22:23:53,629 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/safe023_tso.opt.i[949,962] [2021-08-29 22:23:53,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:23:53,689 INFO L208 MainTranslator]: Completed translation [2021-08-29 22:23:53,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:53 WrapperNode [2021-08-29 22:23:53,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 22:23:53,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 22:23:53,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 22:23:53,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 22:23:53,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:53" (1/1) ... [2021-08-29 22:23:53,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:53" (1/1) ... [2021-08-29 22:23:53,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 22:23:53,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 22:23:53,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 22:23:53,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 22:23:53,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:53" (1/1) ... [2021-08-29 22:23:53,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:53" (1/1) ... [2021-08-29 22:23:53,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:53" (1/1) ... [2021-08-29 22:23:53,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:53" (1/1) ... [2021-08-29 22:23:53,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:53" (1/1) ... [2021-08-29 22:23:53,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:53" (1/1) ... [2021-08-29 22:23:53,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:53" (1/1) ... [2021-08-29 22:23:53,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 22:23:53,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 22:23:53,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 22:23:53,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 22:23:53,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:53" (1/1) ... [2021-08-29 22:23:53,770 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:23:53,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:23:53,794 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 22:23:53,815 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 22:23:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 22:23:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-29 22:23:53,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 22:23:53,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 22:23:53,827 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-29 22:23:53,827 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-29 22:23:53,827 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-29 22:23:53,827 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-29 22:23:53,827 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-29 22:23:53,827 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-29 22:23:53,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 22:23:53,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-29 22:23:53,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 22:23:53,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 22:23:53,829 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 22:23:54,007 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 22:23:54,007 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-29 22:23:54,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:23:54 BoogieIcfgContainer [2021-08-29 22:23:54,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 22:23:54,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 22:23:54,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 22:23:54,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 22:23:54,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:23:53" (1/3) ... [2021-08-29 22:23:54,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6df71a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:23:54, skipping insertion in model container [2021-08-29 22:23:54,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:53" (2/3) ... [2021-08-29 22:23:54,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6df71a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:23:54, skipping insertion in model container [2021-08-29 22:23:54,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:23:54" (3/3) ... [2021-08-29 22:23:54,017 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2021-08-29 22:23:54,022 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-29 22:23:54,023 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 22:23:54,023 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 22:23:54,023 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-29 22:23:54,052 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,053 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,053 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,053 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,053 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,053 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,054 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,054 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,054 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,054 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,054 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,054 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,055 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,055 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,055 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,055 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,056 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,056 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,057 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,057 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,060 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,061 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,061 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,061 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,062 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,062 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,062 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,063 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,063 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,063 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,063 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,064 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,064 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,067 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,067 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,067 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,067 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,070 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,071 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,071 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,071 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,072 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,073 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,073 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,073 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:54,074 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-29 22:23:54,112 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 22:23:54,120 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 22:23:54,120 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-29 22:23:54,139 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-29 22:23:54,149 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 84 transitions, 183 flow [2021-08-29 22:23:54,151 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 84 transitions, 183 flow [2021-08-29 22:23:54,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-08-29 22:23:54,208 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-08-29 22:23:54,208 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-29 22:23:54,212 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 22:23:54,214 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-08-29 22:23:56,608 INFO L131 LiptonReduction]: Checked pairs total: 2476 [2021-08-29 22:23:56,609 INFO L133 LiptonReduction]: Total number of compositions: 73 [2021-08-29 22:23:56,615 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-08-29 22:23:56,631 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 22:23:56,633 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 22:23:56,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 22:23:56,637 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:56,637 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:56,638 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 22:23:56,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:56,641 INFO L82 PathProgramCache]: Analyzing trace with hash -892154175, now seen corresponding path program 1 times [2021-08-29 22:23:56,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:56,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477748956] [2021-08-29 22:23:56,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:56,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:56,815 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 22:23:56,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:56,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477748956] [2021-08-29 22:23:56,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477748956] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:56,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:56,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-29 22:23:56,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770140689] [2021-08-29 22:23:56,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:23:56,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:56,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:23:56,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:23:56,841 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 22:23:56,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:56,891 INFO L93 Difference]: Finished difference Result 383 states and 1008 transitions. [2021-08-29 22:23:56,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:23:56,893 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 22:23:56,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:56,906 INFO L225 Difference]: With dead ends: 383 [2021-08-29 22:23:56,907 INFO L226 Difference]: Without dead ends: 317 [2021-08-29 22:23:56,908 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.06ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:23:56,911 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.73ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.06ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:56,912 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 17 Invalid, 18 Unknown, 0 Unchecked, 0.73ms Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 15.06ms Time] [2021-08-29 22:23:56,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-08-29 22:23:56,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 272. [2021-08-29 22:23:56,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 2.5276752767527677) internal successors, (685), 271 states have internal predecessors, (685), 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 22:23:56,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 685 transitions. [2021-08-29 22:23:56,962 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 685 transitions. Word has length 8 [2021-08-29 22:23:56,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:56,963 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 685 transitions. [2021-08-29 22:23:56,963 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 22:23:56,963 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 685 transitions. [2021-08-29 22:23:56,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 22:23:56,965 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:56,965 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:56,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 22:23:56,966 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 22:23:56,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:56,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1887016027, now seen corresponding path program 1 times [2021-08-29 22:23:56,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:56,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037454682] [2021-08-29 22:23:56,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:56,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:57,042 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 22:23:57,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:57,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037454682] [2021-08-29 22:23:57,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037454682] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:57,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:57,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:23:57,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031201483] [2021-08-29 22:23:57,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:23:57,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:57,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:23:57,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:57,045 INFO L87 Difference]: Start difference. First operand 272 states and 685 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 22:23:57,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:57,078 INFO L93 Difference]: Finished difference Result 329 states and 782 transitions. [2021-08-29 22:23:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:23:57,078 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 22:23:57,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:57,082 INFO L225 Difference]: With dead ends: 329 [2021-08-29 22:23:57,083 INFO L226 Difference]: Without dead ends: 305 [2021-08-29 22:23:57,084 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.92ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:57,084 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.70ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.70ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:57,085 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 28 Invalid, 37 Unknown, 0 Unchecked, 0.70ms Time], IncrementalHoareTripleChecker [14 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 19.70ms Time] [2021-08-29 22:23:57,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-08-29 22:23:57,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 254. [2021-08-29 22:23:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 2.4466403162055337) internal successors, (619), 253 states have internal predecessors, (619), 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 22:23:57,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 619 transitions. [2021-08-29 22:23:57,101 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 619 transitions. Word has length 9 [2021-08-29 22:23:57,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:57,102 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 619 transitions. [2021-08-29 22:23:57,102 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 22:23:57,104 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 619 transitions. [2021-08-29 22:23:57,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 22:23:57,106 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:57,106 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:57,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 22:23:57,107 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 22:23:57,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:57,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1887028520, now seen corresponding path program 1 times [2021-08-29 22:23:57,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:57,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956372005] [2021-08-29 22:23:57,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:57,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:57,172 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 22:23:57,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:57,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956372005] [2021-08-29 22:23:57,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956372005] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:57,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:57,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:23:57,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928854428] [2021-08-29 22:23:57,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:23:57,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:57,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:23:57,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:57,175 INFO L87 Difference]: Start difference. First operand 254 states and 619 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 22:23:57,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:57,191 INFO L93 Difference]: Finished difference Result 281 states and 664 transitions. [2021-08-29 22:23:57,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:23:57,191 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 22:23:57,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:57,193 INFO L225 Difference]: With dead ends: 281 [2021-08-29 22:23:57,193 INFO L226 Difference]: Without dead ends: 281 [2021-08-29 22:23:57,193 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.49ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:57,194 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.34ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.49ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:57,194 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 21 Invalid, 21 Unknown, 0 Unchecked, 0.34ms Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 12.49ms Time] [2021-08-29 22:23:57,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-08-29 22:23:57,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 206. [2021-08-29 22:23:57,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.395121951219512) internal successors, (491), 205 states have internal predecessors, (491), 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 22:23:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 491 transitions. [2021-08-29 22:23:57,202 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 491 transitions. Word has length 9 [2021-08-29 22:23:57,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:57,202 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 491 transitions. [2021-08-29 22:23:57,203 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 22:23:57,203 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 491 transitions. [2021-08-29 22:23:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 22:23:57,203 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:57,203 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:57,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 22:23:57,204 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 22:23:57,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:57,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1631992436, now seen corresponding path program 1 times [2021-08-29 22:23:57,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:57,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877016847] [2021-08-29 22:23:57,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:57,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:57,244 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 22:23:57,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:57,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877016847] [2021-08-29 22:23:57,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877016847] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:57,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:57,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:23:57,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674321763] [2021-08-29 22:23:57,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:23:57,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:57,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:23:57,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:57,247 INFO L87 Difference]: Start difference. First operand 206 states and 491 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:23:57,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:57,266 INFO L93 Difference]: Finished difference Result 228 states and 517 transitions. [2021-08-29 22:23:57,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:23:57,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-29 22:23:57,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:57,267 INFO L225 Difference]: With dead ends: 228 [2021-08-29 22:23:57,268 INFO L226 Difference]: Without dead ends: 192 [2021-08-29 22:23:57,268 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.66ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:57,268 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.36ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.04ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:57,269 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 24 Invalid, 21 Unknown, 0 Unchecked, 0.36ms Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 16.04ms Time] [2021-08-29 22:23:57,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-08-29 22:23:57,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 152. [2021-08-29 22:23:57,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.3642384105960264) internal successors, (357), 151 states have internal predecessors, (357), 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 22:23:57,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 357 transitions. [2021-08-29 22:23:57,274 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 357 transitions. Word has length 10 [2021-08-29 22:23:57,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:57,274 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 357 transitions. [2021-08-29 22:23:57,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:23:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 357 transitions. [2021-08-29 22:23:57,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 22:23:57,275 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:57,275 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:57,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 22:23:57,275 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 22:23:57,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:57,276 INFO L82 PathProgramCache]: Analyzing trace with hash 730984259, now seen corresponding path program 1 times [2021-08-29 22:23:57,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:57,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370145240] [2021-08-29 22:23:57,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:57,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:57,326 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 22:23:57,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:57,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370145240] [2021-08-29 22:23:57,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370145240] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:57,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:57,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:23:57,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764680534] [2021-08-29 22:23:57,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:23:57,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:57,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:23:57,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:57,328 INFO L87 Difference]: Start difference. First operand 152 states and 357 transitions. Second operand has 5 states, 4 states have (on average 3.0) 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 22:23:57,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:57,344 INFO L93 Difference]: Finished difference Result 154 states and 342 transitions. [2021-08-29 22:23:57,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:23:57,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) 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 22:23:57,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:57,345 INFO L225 Difference]: With dead ends: 154 [2021-08-29 22:23:57,345 INFO L226 Difference]: Without dead ends: 94 [2021-08-29 22:23:57,345 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.54ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:23:57,346 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 45 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.42ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.14ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:57,346 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 23 Invalid, 20 Unknown, 0 Unchecked, 0.42ms Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 10.14ms Time] [2021-08-29 22:23:57,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-08-29 22:23:57,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-08-29 22:23:57,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.193548387096774) internal successors, (204), 93 states have internal predecessors, (204), 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 22:23:57,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 204 transitions. [2021-08-29 22:23:57,350 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 204 transitions. Word has length 12 [2021-08-29 22:23:57,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:57,350 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 204 transitions. [2021-08-29 22:23:57,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) 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 22:23:57,350 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 204 transitions. [2021-08-29 22:23:57,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 22:23:57,351 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:57,351 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:57,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 22:23:57,351 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 22:23:57,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:57,352 INFO L82 PathProgramCache]: Analyzing trace with hash 516036299, now seen corresponding path program 1 times [2021-08-29 22:23:57,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:57,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265093626] [2021-08-29 22:23:57,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:57,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:57,425 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 22:23:57,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:57,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265093626] [2021-08-29 22:23:57,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265093626] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:57,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:57,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:23:57,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210497211] [2021-08-29 22:23:57,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:23:57,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:57,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:23:57,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:57,427 INFO L87 Difference]: Start difference. First operand 94 states and 204 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) 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 22:23:57,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:57,446 INFO L93 Difference]: Finished difference Result 162 states and 353 transitions. [2021-08-29 22:23:57,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:23:57,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) 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 22:23:57,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:57,448 INFO L225 Difference]: With dead ends: 162 [2021-08-29 22:23:57,448 INFO L226 Difference]: Without dead ends: 106 [2021-08-29 22:23:57,449 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.03ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:57,449 INFO L928 BasicCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.38ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.59ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:57,450 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 26 Invalid, 28 Unknown, 0 Unchecked, 0.38ms Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 16.59ms Time] [2021-08-29 22:23:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-08-29 22:23:57,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 82. [2021-08-29 22:23:57,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.111111111111111) internal successors, (171), 81 states have internal predecessors, (171), 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 22:23:57,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 171 transitions. [2021-08-29 22:23:57,454 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 171 transitions. Word has length 13 [2021-08-29 22:23:57,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:57,455 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 171 transitions. [2021-08-29 22:23:57,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) 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 22:23:57,455 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 171 transitions. [2021-08-29 22:23:57,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 22:23:57,456 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:57,456 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:57,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 22:23:57,456 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 22:23:57,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:57,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1567407223, now seen corresponding path program 2 times [2021-08-29 22:23:57,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:57,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144793913] [2021-08-29 22:23:57,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:57,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:57,503 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 22:23:57,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:57,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144793913] [2021-08-29 22:23:57,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144793913] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:57,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:57,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:23:57,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371390414] [2021-08-29 22:23:57,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:23:57,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:57,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:23:57,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:57,508 INFO L87 Difference]: Start difference. First operand 82 states and 171 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 22:23:57,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:57,552 INFO L93 Difference]: Finished difference Result 88 states and 172 transitions. [2021-08-29 22:23:57,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:23:57,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 22:23:57,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:57,553 INFO L225 Difference]: With dead ends: 88 [2021-08-29 22:23:57,553 INFO L226 Difference]: Without dead ends: 71 [2021-08-29 22:23:57,553 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.66ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:57,554 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.59ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.83ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:57,554 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 25 Invalid, 38 Unknown, 0 Unchecked, 0.59ms Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 29.83ms Time] [2021-08-29 22:23:57,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-08-29 22:23:57,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-08-29 22:23:57,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.9714285714285715) internal successors, (138), 70 states have internal predecessors, (138), 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 22:23:57,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 138 transitions. [2021-08-29 22:23:57,557 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 138 transitions. Word has length 13 [2021-08-29 22:23:57,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:57,557 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 138 transitions. [2021-08-29 22:23:57,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 22:23:57,558 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 138 transitions. [2021-08-29 22:23:57,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 22:23:57,561 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:57,561 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:57,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 22:23:57,561 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:23:57,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:57,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1544054034, now seen corresponding path program 1 times [2021-08-29 22:23:57,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:57,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122507916] [2021-08-29 22:23:57,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:57,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:57,594 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 22:23:57,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:57,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122507916] [2021-08-29 22:23:57,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122507916] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:57,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:57,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:23:57,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013185647] [2021-08-29 22:23:57,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:23:57,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:57,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:23:57,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:57,596 INFO L87 Difference]: Start difference. First operand 71 states and 138 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 22:23:57,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:57,623 INFO L93 Difference]: Finished difference Result 67 states and 127 transitions. [2021-08-29 22:23:57,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:23:57,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-08-29 22:23:57,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:57,624 INFO L225 Difference]: With dead ends: 67 [2021-08-29 22:23:57,624 INFO L226 Difference]: Without dead ends: 58 [2021-08-29 22:23:57,624 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.80ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:23:57,625 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 23 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.44ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.94ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:57,625 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 27 Invalid, 44 Unknown, 0 Unchecked, 0.44ms Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 20.94ms Time] [2021-08-29 22:23:57,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-08-29 22:23:57,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-08-29 22:23:57,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.9298245614035088) internal successors, (110), 57 states have internal predecessors, (110), 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 22:23:57,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 110 transitions. [2021-08-29 22:23:57,627 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 110 transitions. Word has length 14 [2021-08-29 22:23:57,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:57,627 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 110 transitions. [2021-08-29 22:23:57,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 22:23:57,627 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 110 transitions. [2021-08-29 22:23:57,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 22:23:57,628 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:57,628 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:57,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-29 22:23:57,628 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:23:57,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:57,628 INFO L82 PathProgramCache]: Analyzing trace with hash 621018445, now seen corresponding path program 1 times [2021-08-29 22:23:57,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:57,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217985935] [2021-08-29 22:23:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:57,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:57,672 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 22:23:57,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:57,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217985935] [2021-08-29 22:23:57,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217985935] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:57,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:57,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:23:57,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255749620] [2021-08-29 22:23:57,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 22:23:57,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:57,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 22:23:57,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:23:57,675 INFO L87 Difference]: Start difference. First operand 58 states and 110 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 22:23:57,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:57,699 INFO L93 Difference]: Finished difference Result 55 states and 107 transitions. [2021-08-29 22:23:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:23:57,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2021-08-29 22:23:57,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:57,700 INFO L225 Difference]: With dead ends: 55 [2021-08-29 22:23:57,700 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 22:23:57,700 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 12.69ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:23:57,701 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 39 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.71ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.76ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:57,701 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 21 Invalid, 31 Unknown, 0 Unchecked, 0.71ms Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 17.76ms Time] [2021-08-29 22:23:57,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 22:23:57,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 22:23:57,702 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 22:23:57,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 22:23:57,703 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-08-29 22:23:57,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:57,703 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 22:23:57,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 22:23:57,703 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 22:23:57,703 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 22:23:57,707 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-08-29 22:23:57,708 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-08-29 22:23:57,708 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-08-29 22:23:57,708 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-08-29 22:23:57,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-29 22:23:57,711 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-29 22:23:57,711 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 22:23:57,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:23:57 BasicIcfg [2021-08-29 22:23:57,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 22:23:57,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 22:23:57,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 22:23:57,714 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 22:23:57,715 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:23:54" (3/4) ... [2021-08-29 22:23:57,717 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 22:23:57,721 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-08-29 22:23:57,721 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-08-29 22:23:57,722 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-08-29 22:23:57,726 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-08-29 22:23:57,726 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 22:23:57,726 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:23:57,726 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:23:57,751 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 22:23:57,751 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 22:23:57,752 INFO L158 Benchmark]: Toolchain (without parser) took 4466.32ms. Allocated memory was 52.4MB in the beginning and 92.3MB in the end (delta: 39.8MB). Free memory was 28.3MB in the beginning and 39.0MB in the end (delta: -10.8MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. [2021-08-29 22:23:57,752 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 52.4MB. Free memory was 35.1MB in the beginning and 35.0MB in the end (delta: 33.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:23:57,753 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.13ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 28.1MB in the beginning and 38.0MB in the end (delta: -9.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-08-29 22:23:57,753 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.59ms. Allocated memory is still 62.9MB. Free memory was 37.8MB in the beginning and 35.8MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:23:57,753 INFO L158 Benchmark]: Boogie Preprocessor took 24.65ms. Allocated memory is still 62.9MB. Free memory was 35.8MB in the beginning and 34.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:23:57,753 INFO L158 Benchmark]: RCFGBuilder took 246.58ms. Allocated memory is still 62.9MB. Free memory was 34.5MB in the beginning and 38.6MB in the end (delta: -4.0MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2021-08-29 22:23:57,754 INFO L158 Benchmark]: TraceAbstraction took 3701.07ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 38.2MB in the beginning and 41.9MB in the end (delta: -3.6MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2021-08-29 22:23:57,754 INFO L158 Benchmark]: Witness Printer took 37.32ms. Allocated memory is still 92.3MB. Free memory was 41.9MB in the beginning and 39.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:23:57,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 52.4MB. Free memory was 35.1MB in the beginning and 35.0MB in the end (delta: 33.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 393.13ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 28.1MB in the beginning and 38.0MB in the end (delta: -9.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.59ms. Allocated memory is still 62.9MB. Free memory was 37.8MB in the beginning and 35.8MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.65ms. Allocated memory is still 62.9MB. Free memory was 35.8MB in the beginning and 34.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 246.58ms. Allocated memory is still 62.9MB. Free memory was 34.5MB in the beginning and 38.6MB in the end (delta: -4.0MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3701.07ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 38.2MB in the beginning and 41.9MB in the end (delta: -3.6MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. * Witness Printer took 37.32ms. Allocated memory is still 92.3MB. Free memory was 41.9MB in the beginning and 39.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2457.55ms, 92 PlacesBefore, 31 PlacesAfterwards, 84 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2476 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1521, positive: 1440, positive conditional: 0, positive unconditional: 1440, negative: 81, negative conditional: 0, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1033, positive: 982, positive conditional: 0, positive unconditional: 982, 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: 1033, positive: 967, positive conditional: 0, positive unconditional: 967, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 66, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 129, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 91, negative conditional: 0, negative unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1521, positive: 458, positive conditional: 0, positive unconditional: 458, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 1033, unknown conditional: 0, unknown unconditional: 1033] , Statistics on independence cache: Total cache size (in pairs): 89, Positive cache size: 72, Positive conditional cache size: 0, Positive unconditional cache size: 72, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17 - 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: 3600.08ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 15.43ms, AutomataDifference: 333.67ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 2510.92ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 210 SdHoareTripleChecker+Valid, 158.56ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 210 mSDsluCounter, 212 SdHoareTripleChecker+Invalid, 123.86ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 175 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 209 IncrementalHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 99 mSDtfsCounter, 209 mSolverCounterSat, 4.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 76.84ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=272occurred in iteration=1, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 74.01ms AutomataMinimizationTime, 9 MinimizatonAttempts, 235 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.50ms SsaConstructionTime, 149.40ms SatisfiabilityAnalysisTime, 339.15ms InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 506 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 22:23:57,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...