./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 997cd7c3 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/safe025_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 2cb0904590711f61fe562550478334c4bfa7ca51 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-997cd7c-m [2021-09-22 14:51:39,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-09-22 14:51:39,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-09-22 14:51:39,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-09-22 14:51:39,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-09-22 14:51:39,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-09-22 14:51:39,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-09-22 14:51:39,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-09-22 14:51:39,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-09-22 14:51:39,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-09-22 14:51:39,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-09-22 14:51:39,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-09-22 14:51:39,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-09-22 14:51:39,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-09-22 14:51:39,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-09-22 14:51:39,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-09-22 14:51:39,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-09-22 14:51:39,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-09-22 14:51:39,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-09-22 14:51:39,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-09-22 14:51:39,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-09-22 14:51:39,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-09-22 14:51:39,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-09-22 14:51:39,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-09-22 14:51:39,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-09-22 14:51:39,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-09-22 14:51:39,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-09-22 14:51:39,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-09-22 14:51:39,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-09-22 14:51:39,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-09-22 14:51:39,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-09-22 14:51:39,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-09-22 14:51:39,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-09-22 14:51:39,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-09-22 14:51:39,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-09-22 14:51:39,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-09-22 14:51:39,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-09-22 14:51:39,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-09-22 14:51:39,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-09-22 14:51:39,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-09-22 14:51:39,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-09-22 14:51:39,987 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-09-22 14:51:40,020 INFO L113 SettingsManager]: Loading preferences was successful [2021-09-22 14:51:40,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-09-22 14:51:40,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-09-22 14:51:40,022 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-09-22 14:51:40,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-09-22 14:51:40,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-09-22 14:51:40,024 INFO L138 SettingsManager]: * Use SBE=true [2021-09-22 14:51:40,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-09-22 14:51:40,024 INFO L138 SettingsManager]: * sizeof long=4 [2021-09-22 14:51:40,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-09-22 14:51:40,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-09-22 14:51:40,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-09-22 14:51:40,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-09-22 14:51:40,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-09-22 14:51:40,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-09-22 14:51:40,026 INFO L138 SettingsManager]: * sizeof long double=12 [2021-09-22 14:51:40,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-09-22 14:51:40,027 INFO L138 SettingsManager]: * Use constant arrays=true [2021-09-22 14:51:40,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-09-22 14:51:40,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-09-22 14:51:40,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-09-22 14:51:40,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-09-22 14:51:40,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:51:40,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-09-22 14:51:40,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-09-22 14:51:40,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-09-22 14:51:40,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-09-22 14:51:40,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-09-22 14:51:40,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-09-22 14:51:40,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-09-22 14:51:40,029 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cb0904590711f61fe562550478334c4bfa7ca51 [2021-09-22 14:51:40,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-09-22 14:51:40,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-09-22 14:51:40,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-09-22 14:51:40,346 INFO L271 PluginConnector]: Initializing CDTParser... [2021-09-22 14:51:40,346 INFO L275 PluginConnector]: CDTParser initialized [2021-09-22 14:51:40,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i [2021-09-22 14:51:40,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b208b2a8/1be70fcacc824209b9625a0f725113c7/FLAGb89e5ef3a [2021-09-22 14:51:40,979 INFO L306 CDTParser]: Found 1 translation units. [2021-09-22 14:51:40,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i [2021-09-22 14:51:40,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b208b2a8/1be70fcacc824209b9625a0f725113c7/FLAGb89e5ef3a [2021-09-22 14:51:41,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b208b2a8/1be70fcacc824209b9625a0f725113c7 [2021-09-22 14:51:41,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-09-22 14:51:41,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-09-22 14:51:41,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-09-22 14:51:41,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-09-22 14:51:41,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-09-22 14:51:41,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:51:41" (1/1) ... [2021-09-22 14:51:41,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12199087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:51:41, skipping insertion in model container [2021-09-22 14:51:41,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:51:41" (1/1) ... [2021-09-22 14:51:41,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-09-22 14:51:41,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-09-22 14:51:41,622 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/safe025_tso.opt.i[949,962] [2021-09-22 14:51:41,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:51:41,828 INFO L203 MainTranslator]: Completed pre-run [2021-09-22 14:51:41,841 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/safe025_tso.opt.i[949,962] [2021-09-22 14:51:41,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:51:41,924 INFO L208 MainTranslator]: Completed translation [2021-09-22 14:51:41,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:51:41 WrapperNode [2021-09-22 14:51:41,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-09-22 14:51:41,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-09-22 14:51:41,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-09-22 14:51:41,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-09-22 14:51:41,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:51:41" (1/1) ... [2021-09-22 14:51:41,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:51:41" (1/1) ... [2021-09-22 14:51:42,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-09-22 14:51:42,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-09-22 14:51:42,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-09-22 14:51:42,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-09-22 14:51:42,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:51:41" (1/1) ... [2021-09-22 14:51:42,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:51:41" (1/1) ... [2021-09-22 14:51:42,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:51:41" (1/1) ... [2021-09-22 14:51:42,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:51:41" (1/1) ... [2021-09-22 14:51:42,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:51:41" (1/1) ... [2021-09-22 14:51:42,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:51:41" (1/1) ... [2021-09-22 14:51:42,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:51:41" (1/1) ... [2021-09-22 14:51:42,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-09-22 14:51:42,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-09-22 14:51:42,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-09-22 14:51:42,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-09-22 14:51:42,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:51:41" (1/1) ... [2021-09-22 14:51:42,061 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:51:42,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:51:42,086 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) [2021-09-22 14:51:42,108 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 [2021-09-22 14:51:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-09-22 14:51:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-09-22 14:51:42,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-09-22 14:51:42,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-09-22 14:51:42,124 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-09-22 14:51:42,125 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-09-22 14:51:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-09-22 14:51:42,125 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-09-22 14:51:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-09-22 14:51:42,125 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-09-22 14:51:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-09-22 14:51:42,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-09-22 14:51:42,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-09-22 14:51:42,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-09-22 14:51:42,127 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-09-22 14:51:42,462 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-09-22 14:51:42,462 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-09-22 14:51:42,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:51:42 BoogieIcfgContainer [2021-09-22 14:51:42,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-09-22 14:51:42,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-09-22 14:51:42,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-09-22 14:51:42,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-09-22 14:51:42,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.09 02:51:41" (1/3) ... [2021-09-22 14:51:42,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c0932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:51:42, skipping insertion in model container [2021-09-22 14:51:42,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:51:41" (2/3) ... [2021-09-22 14:51:42,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c0932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:51:42, skipping insertion in model container [2021-09-22 14:51:42,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:51:42" (3/3) ... [2021-09-22 14:51:42,471 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.opt.i [2021-09-22 14:51:42,483 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-09-22 14:51:42,484 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-09-22 14:51:42,484 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-09-22 14:51:42,484 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-09-22 14:51:42,523 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,523 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,523 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,523 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,524 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,524 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,524 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,524 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,526 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,526 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,527 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,527 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,529 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,529 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,535 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,535 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,535 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,535 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,536 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,536 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,536 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,537 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,537 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,537 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,537 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,538 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,538 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,538 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,538 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,538 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,542 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,543 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,549 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,550 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,552 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,553 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:51:42,556 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-09-22 14:51:42,589 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-09-22 14:51:42,597 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 [2021-09-22 14:51:42,598 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-09-22 14:51:42,620 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-09-22 14:51:42,633 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 84 transitions, 183 flow [2021-09-22 14:51:42,639 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 84 transitions, 183 flow [2021-09-22 14:51:42,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-09-22 14:51:42,695 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-09-22 14:51:42,695 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-09-22 14:51:42,699 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. [2021-09-22 14:51:42,704 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-09-22 14:51:45,358 INFO L131 LiptonReduction]: Checked pairs total: 2476 [2021-09-22 14:51:45,358 INFO L133 LiptonReduction]: Total number of compositions: 73 [2021-09-22 14:51:45,365 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-09-22 14:51:45,386 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) [2021-09-22 14:51:45,389 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) [2021-09-22 14:51:45,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-09-22 14:51:45,393 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:51:45,394 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:51:45,394 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:51:45,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:51:45,399 INFO L82 PathProgramCache]: Analyzing trace with hash -892154175, now seen corresponding path program 1 times [2021-09-22 14:51:45,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:51:45,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324726481] [2021-09-22 14:51:45,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:51:45,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:51:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:51:45,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:51:45,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:51:45,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324726481] [2021-09-22 14:51:45,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324726481] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:51:45,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:51:45,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-09-22 14:51:45,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218942977] [2021-09-22 14:51:45,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-09-22 14:51:45,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:51:45,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-09-22 14:51:45,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:51:45,648 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) [2021-09-22 14:51:45,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:51:45,686 INFO L93 Difference]: Finished difference Result 218 states and 600 transitions. [2021-09-22 14:51:45,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-09-22 14:51:45,690 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 [2021-09-22 14:51:45,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:51:45,713 INFO L225 Difference]: With dead ends: 218 [2021-09-22 14:51:45,713 INFO L226 Difference]: Without dead ends: 218 [2021-09-22 14:51:45,715 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:51:45,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-09-22 14:51:45,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-09-22 14:51:45,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.7649769585253456) internal successors, (600), 217 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:51:45,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2021-09-22 14:51:45,785 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2021-09-22 14:51:45,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:51:45,786 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2021-09-22 14:51:45,786 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) [2021-09-22 14:51:45,787 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2021-09-22 14:51:45,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-09-22 14:51:45,789 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:51:45,789 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:51:45,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-09-22 14:51:45,789 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:51:45,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:51:45,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1887028520, now seen corresponding path program 1 times [2021-09-22 14:51:45,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:51:45,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999603642] [2021-09-22 14:51:45,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:51:45,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:51:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:51:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:51:45,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:51:45,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999603642] [2021-09-22 14:51:45,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999603642] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:51:45,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:51:45,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:51:45,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865873757] [2021-09-22 14:51:45,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:51:45,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:51:45,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:51:45,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:51:45,908 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:51:45,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:51:45,926 INFO L93 Difference]: Finished difference Result 284 states and 746 transitions. [2021-09-22 14:51:45,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-09-22 14:51:45,926 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 [2021-09-22 14:51:45,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:51:45,929 INFO L225 Difference]: With dead ends: 284 [2021-09-22 14:51:45,929 INFO L226 Difference]: Without dead ends: 268 [2021-09-22 14:51:45,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:51:45,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-09-22 14:51:45,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 238. [2021-09-22 14:51:45,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 2.7046413502109705) internal successors, (641), 237 states have internal predecessors, (641), 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) [2021-09-22 14:51:45,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 641 transitions. [2021-09-22 14:51:45,943 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 641 transitions. Word has length 9 [2021-09-22 14:51:45,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:51:45,944 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 641 transitions. [2021-09-22 14:51:45,944 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) [2021-09-22 14:51:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 641 transitions. [2021-09-22 14:51:45,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-09-22 14:51:45,945 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:51:45,946 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:51:45,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-09-22 14:51:45,946 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:51:45,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:51:45,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1631617646, now seen corresponding path program 1 times [2021-09-22 14:51:45,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:51:45,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261358664] [2021-09-22 14:51:45,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:51:45,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:51:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:51:45,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:51:45,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:51:45,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261358664] [2021-09-22 14:51:45,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261358664] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:51:45,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:51:45,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:51:45,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246027519] [2021-09-22 14:51:46,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:51:46,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:51:46,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:51:46,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:51:46,011 INFO L87 Difference]: Start difference. First operand 238 states and 641 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2021-09-22 14:51:46,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:51:46,041 INFO L93 Difference]: Finished difference Result 266 states and 688 transitions. [2021-09-22 14:51:46,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-09-22 14:51:46,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 [2021-09-22 14:51:46,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:51:46,046 INFO L225 Difference]: With dead ends: 266 [2021-09-22 14:51:46,046 INFO L226 Difference]: Without dead ends: 266 [2021-09-22 14:51:46,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:51:46,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-09-22 14:51:46,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 202. [2021-09-22 14:51:46,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.63681592039801) internal successors, (530), 201 states have internal predecessors, (530), 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) [2021-09-22 14:51:46,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 530 transitions. [2021-09-22 14:51:46,072 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 530 transitions. Word has length 10 [2021-09-22 14:51:46,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:51:46,073 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 530 transitions. [2021-09-22 14:51:46,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2021-09-22 14:51:46,073 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 530 transitions. [2021-09-22 14:51:46,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-09-22 14:51:46,078 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:51:46,079 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:51:46,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-09-22 14:51:46,079 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:51:46,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:51:46,081 INFO L82 PathProgramCache]: Analyzing trace with hash -947911244, now seen corresponding path program 1 times [2021-09-22 14:51:46,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:51:46,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360614790] [2021-09-22 14:51:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:51:46,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:51:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:51:46,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:51:46,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:51:46,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360614790] [2021-09-22 14:51:46,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360614790] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:51:46,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:51:46,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:51:46,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775500242] [2021-09-22 14:51:46,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-09-22 14:51:46,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:51:46,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-09-22 14:51:46,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:51:46,151 INFO L87 Difference]: Start difference. First operand 202 states and 530 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:51:46,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:51:46,173 INFO L93 Difference]: Finished difference Result 306 states and 780 transitions. [2021-09-22 14:51:46,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-09-22 14:51:46,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-09-22 14:51:46,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:51:46,175 INFO L225 Difference]: With dead ends: 306 [2021-09-22 14:51:46,176 INFO L226 Difference]: Without dead ends: 202 [2021-09-22 14:51:46,176 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.8ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-09-22 14:51:46,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-09-22 14:51:46,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 178. [2021-09-22 14:51:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.553672316384181) internal successors, (452), 177 states have internal predecessors, (452), 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) [2021-09-22 14:51:46,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 452 transitions. [2021-09-22 14:51:46,182 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 452 transitions. Word has length 11 [2021-09-22 14:51:46,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:51:46,182 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 452 transitions. [2021-09-22 14:51:46,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:51:46,183 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 452 transitions. [2021-09-22 14:51:46,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-09-22 14:51:46,183 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:51:46,184 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:51:46,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-09-22 14:51:46,184 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:51:46,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:51:46,185 INFO L82 PathProgramCache]: Analyzing trace with hash -959529734, now seen corresponding path program 2 times [2021-09-22 14:51:46,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:51:46,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356614138] [2021-09-22 14:51:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:51:46,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:51:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:51:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:51:46,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:51:46,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356614138] [2021-09-22 14:51:46,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356614138] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:51:46,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:51:46,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-09-22 14:51:46,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156237949] [2021-09-22 14:51:46,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-09-22 14:51:46,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:51:46,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-09-22 14:51:46,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:51:46,244 INFO L87 Difference]: Start difference. First operand 178 states and 452 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:51:46,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:51:46,276 INFO L93 Difference]: Finished difference Result 262 states and 636 transitions. [2021-09-22 14:51:46,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-09-22 14:51:46,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-09-22 14:51:46,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:51:46,278 INFO L225 Difference]: With dead ends: 262 [2021-09-22 14:51:46,278 INFO L226 Difference]: Without dead ends: 182 [2021-09-22 14:51:46,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.0ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-09-22 14:51:46,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-09-22 14:51:46,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 154. [2021-09-22 14:51:46,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.4444444444444446) internal successors, (374), 153 states have internal predecessors, (374), 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) [2021-09-22 14:51:46,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 374 transitions. [2021-09-22 14:51:46,285 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 374 transitions. Word has length 11 [2021-09-22 14:51:46,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:51:46,285 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 374 transitions. [2021-09-22 14:51:46,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:51:46,286 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 374 transitions. [2021-09-22 14:51:46,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-09-22 14:51:46,287 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:51:46,287 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:51:46,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-09-22 14:51:46,287 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:51:46,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:51:46,288 INFO L82 PathProgramCache]: Analyzing trace with hash -960394634, now seen corresponding path program 3 times [2021-09-22 14:51:46,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:51:46,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977388839] [2021-09-22 14:51:46,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:51:46,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:51:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:51:46,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:51:46,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:51:46,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977388839] [2021-09-22 14:51:46,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977388839] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:51:46,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:51:46,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:51:46,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228834742] [2021-09-22 14:51:46,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:51:46,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:51:46,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:51:46,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:51:46,378 INFO L87 Difference]: Start difference. First operand 154 states and 374 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:51:46,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:51:46,410 INFO L93 Difference]: Finished difference Result 176 states and 391 transitions. [2021-09-22 14:51:46,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-09-22 14:51:46,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-09-22 14:51:46,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:51:46,412 INFO L225 Difference]: With dead ends: 176 [2021-09-22 14:51:46,412 INFO L226 Difference]: Without dead ends: 132 [2021-09-22 14:51:46,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:51:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-09-22 14:51:46,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-09-22 14:51:46,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.236641221374046) internal successors, (293), 131 states have internal predecessors, (293), 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) [2021-09-22 14:51:46,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 293 transitions. [2021-09-22 14:51:46,417 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 293 transitions. Word has length 11 [2021-09-22 14:51:46,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:51:46,417 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 293 transitions. [2021-09-22 14:51:46,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:51:46,418 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 293 transitions. [2021-09-22 14:51:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-09-22 14:51:46,419 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:51:46,420 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:51:46,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-09-22 14:51:46,420 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:51:46,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:51:46,422 INFO L82 PathProgramCache]: Analyzing trace with hash 293420561, now seen corresponding path program 1 times [2021-09-22 14:51:46,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:51:46,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497194445] [2021-09-22 14:51:46,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:51:46,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:51:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:51:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:51:46,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:51:46,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497194445] [2021-09-22 14:51:46,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497194445] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:51:46,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:51:46,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:51:46,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647746005] [2021-09-22 14:51:46,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-09-22 14:51:46,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:51:46,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-09-22 14:51:46,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:51:46,503 INFO L87 Difference]: Start difference. First operand 132 states and 293 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) [2021-09-22 14:51:46,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:51:46,534 INFO L93 Difference]: Finished difference Result 130 states and 267 transitions. [2021-09-22 14:51:46,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-09-22 14:51:46,534 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 [2021-09-22 14:51:46,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:51:46,535 INFO L225 Difference]: With dead ends: 130 [2021-09-22 14:51:46,535 INFO L226 Difference]: Without dead ends: 102 [2021-09-22 14:51:46,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-09-22 14:51:46,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-09-22 14:51:46,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-09-22 14:51:46,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.0495049504950495) internal successors, (207), 101 states have internal predecessors, (207), 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) [2021-09-22 14:51:46,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 207 transitions. [2021-09-22 14:51:46,541 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 207 transitions. Word has length 12 [2021-09-22 14:51:46,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:51:46,541 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 207 transitions. [2021-09-22 14:51:46,541 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) [2021-09-22 14:51:46,542 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 207 transitions. [2021-09-22 14:51:46,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-09-22 14:51:46,542 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:51:46,542 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:51:46,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-09-22 14:51:46,547 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:51:46,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:51:46,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1492658743, now seen corresponding path program 1 times [2021-09-22 14:51:46,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:51:46,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167383851] [2021-09-22 14:51:46,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:51:46,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:51:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:51:46,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:51:46,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:51:46,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167383851] [2021-09-22 14:51:46,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167383851] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:51:46,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:51:46,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-09-22 14:51:46,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107414878] [2021-09-22 14:51:46,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-09-22 14:51:46,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:51:46,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-09-22 14:51:46,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-09-22 14:51:46,633 INFO L87 Difference]: Start difference. First operand 102 states and 207 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-09-22 14:51:46,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:51:46,667 INFO L93 Difference]: Finished difference Result 97 states and 195 transitions. [2021-09-22 14:51:46,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-09-22 14:51:46,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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 [2021-09-22 14:51:46,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:51:46,668 INFO L225 Difference]: With dead ends: 97 [2021-09-22 14:51:46,669 INFO L226 Difference]: Without dead ends: 80 [2021-09-22 14:51:46,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.1ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-09-22 14:51:46,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-09-22 14:51:46,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2021-09-22 14:51:46,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.08) internal successors, (156), 75 states have internal predecessors, (156), 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) [2021-09-22 14:51:46,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 156 transitions. [2021-09-22 14:51:46,674 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 156 transitions. Word has length 14 [2021-09-22 14:51:46,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:51:46,675 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 156 transitions. [2021-09-22 14:51:46,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-09-22 14:51:46,675 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 156 transitions. [2021-09-22 14:51:46,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-09-22 14:51:46,675 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:51:46,676 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:51:46,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-09-22 14:51:46,676 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:51:46,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:51:46,677 INFO L82 PathProgramCache]: Analyzing trace with hash -30593963, now seen corresponding path program 1 times [2021-09-22 14:51:46,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:51:46,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393717217] [2021-09-22 14:51:46,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:51:46,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:51:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:51:46,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:51:46,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:51:46,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393717217] [2021-09-22 14:51:46,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393717217] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:51:46,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:51:46,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:51:46,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285746593] [2021-09-22 14:51:46,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:51:46,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:51:46,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:51:46,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:51:46,751 INFO L87 Difference]: Start difference. First operand 76 states and 156 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-09-22 14:51:46,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:51:46,766 INFO L93 Difference]: Finished difference Result 101 states and 201 transitions. [2021-09-22 14:51:46,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-09-22 14:51:46,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-09-22 14:51:46,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:51:46,767 INFO L225 Difference]: With dead ends: 101 [2021-09-22 14:51:46,767 INFO L226 Difference]: Without dead ends: 60 [2021-09-22 14:51:46,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:51:46,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-09-22 14:51:46,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-09-22 14:51:46,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.9322033898305084) internal successors, (114), 59 states have internal predecessors, (114), 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) [2021-09-22 14:51:46,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 114 transitions. [2021-09-22 14:51:46,770 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 114 transitions. Word has length 17 [2021-09-22 14:51:46,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:51:46,770 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 114 transitions. [2021-09-22 14:51:46,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-09-22 14:51:46,771 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 114 transitions. [2021-09-22 14:51:46,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-09-22 14:51:46,771 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:51:46,771 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:51:46,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-09-22 14:51:46,772 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:51:46,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:51:46,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1931758473, now seen corresponding path program 2 times [2021-09-22 14:51:46,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:51:46,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054880109] [2021-09-22 14:51:46,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:51:46,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:51:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:51:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:51:46,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:51:46,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054880109] [2021-09-22 14:51:46,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054880109] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:51:46,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:51:46,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:51:46,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274273754] [2021-09-22 14:51:46,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:51:46,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:51:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:51:46,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:51:46,826 INFO L87 Difference]: Start difference. First operand 60 states and 114 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-09-22 14:51:46,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:51:46,840 INFO L93 Difference]: Finished difference Result 91 states and 172 transitions. [2021-09-22 14:51:46,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-09-22 14:51:46,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-09-22 14:51:46,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:51:46,841 INFO L225 Difference]: With dead ends: 91 [2021-09-22 14:51:46,841 INFO L226 Difference]: Without dead ends: 54 [2021-09-22 14:51:46,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:51:46,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-09-22 14:51:46,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-09-22 14:51:46,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.849056603773585) internal successors, (98), 53 states have internal predecessors, (98), 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) [2021-09-22 14:51:46,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2021-09-22 14:51:46,844 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2021-09-22 14:51:46,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:51:46,844 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2021-09-22 14:51:46,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-09-22 14:51:46,844 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2021-09-22 14:51:46,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-09-22 14:51:46,845 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:51:46,845 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:51:46,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-09-22 14:51:46,845 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-09-22 14:51:46,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:51:46,846 INFO L82 PathProgramCache]: Analyzing trace with hash -247295787, now seen corresponding path program 3 times [2021-09-22 14:51:46,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:51:46,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207764218] [2021-09-22 14:51:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:51:46,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:51:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:51:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:51:46,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:51:46,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207764218] [2021-09-22 14:51:46,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207764218] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:51:46,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:51:46,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:51:46,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79279083] [2021-09-22 14:51:46,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:51:46,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:51:46,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:51:46,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:51:46,888 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-09-22 14:51:46,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:51:46,897 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2021-09-22 14:51:46,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-09-22 14:51:46,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-09-22 14:51:46,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:51:46,899 INFO L225 Difference]: With dead ends: 53 [2021-09-22 14:51:46,899 INFO L226 Difference]: Without dead ends: 0 [2021-09-22 14:51:46,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:51:46,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-09-22 14:51:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-09-22 14:51:46,900 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) [2021-09-22 14:51:46,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-09-22 14:51:46,900 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-09-22 14:51:46,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:51:46,900 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-09-22 14:51:46,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-09-22 14:51:46,901 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-09-22 14:51:46,901 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-09-22 14:51:46,903 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:51:46,903 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-09-22 14:51:46,904 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-09-22 14:51:46,904 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-09-22 14:51:46,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-09-22 14:51:46,907 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-09-22 14:51:46,907 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-09-22 14:51:46,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.09 02:51:46 BasicIcfg [2021-09-22 14:51:46,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-09-22 14:51:46,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-09-22 14:51:46,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-09-22 14:51:46,913 INFO L275 PluginConnector]: Witness Printer initialized [2021-09-22 14:51:46,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:51:42" (3/4) ... [2021-09-22 14:51:46,916 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-09-22 14:51:46,921 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-09-22 14:51:46,922 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-09-22 14:51:46,922 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-09-22 14:51:46,927 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-09-22 14:51:46,928 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-09-22 14:51:46,928 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-09-22 14:51:46,928 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-09-22 14:51:46,961 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-09-22 14:51:46,961 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-09-22 14:51:46,963 INFO L168 Benchmark]: Toolchain (without parser) took 5529.75 ms. Allocated memory was 48.2 MB in the beginning and 86.0 MB in the end (delta: 37.7 MB). Free memory was 23.1 MB in the beginning and 62.5 MB in the end (delta: -39.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:51:46,963 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 48.2 MB. Free memory was 31.1 MB in the beginning and 31.0 MB in the end (delta: 39.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:51:46,963 INFO L168 Benchmark]: CACSL2BoogieTranslator took 494.18 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.8 MB in the beginning and 32.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-09-22 14:51:46,964 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.92 ms. Allocated memory is still 58.7 MB. Free memory was 32.6 MB in the beginning and 42.2 MB in the end (delta: -9.6 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-09-22 14:51:46,964 INFO L168 Benchmark]: Boogie Preprocessor took 46.17 ms. Allocated memory is still 58.7 MB. Free memory was 42.2 MB in the beginning and 40.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:51:46,964 INFO L168 Benchmark]: RCFGBuilder took 414.67 ms. Allocated memory is still 58.7 MB. Free memory was 40.7 MB in the beginning and 28.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-09-22 14:51:46,965 INFO L168 Benchmark]: TraceAbstraction took 4444.13 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 28.6 MB in the beginning and 31.6 MB in the end (delta: -3.0 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2021-09-22 14:51:46,965 INFO L168 Benchmark]: Witness Printer took 48.27 ms. Allocated memory is still 86.0 MB. Free memory was 65.3 MB in the beginning and 62.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:51:46,966 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 48.2 MB. Free memory was 31.1 MB in the beginning and 31.0 MB in the end (delta: 39.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 494.18 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.8 MB in the beginning and 32.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.92 ms. Allocated memory is still 58.7 MB. Free memory was 32.6 MB in the beginning and 42.2 MB in the end (delta: -9.6 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.17 ms. Allocated memory is still 58.7 MB. Free memory was 42.2 MB in the beginning and 40.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 414.67 ms. Allocated memory is still 58.7 MB. Free memory was 40.7 MB in the beginning and 28.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4444.13 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 28.6 MB in the beginning and 31.6 MB in the end (delta: -3.0 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. * Witness Printer took 48.27 ms. Allocated memory is still 86.0 MB. Free memory was 65.3 MB in the beginning and 62.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2719.0ms, 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: 1499, positive: 1418, positive conditional: 0, positive unconditional: 1418, 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: 1042, positive: 989, positive conditional: 0, positive unconditional: 989, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1042, positive: 974, positive conditional: 0, positive unconditional: 974, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 68, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 149, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 104, negative conditional: 0, negative unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1499, positive: 429, positive conditional: 0, positive unconditional: 429, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 1042, unknown conditional: 0, unknown unconditional: 1042] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4318.9ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 20.1ms, AutomataDifference: 359.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2788.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 218 SDtfs, 240 SDslu, 276 SDs, 0 SdLazy, 158 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 126.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 106.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=238occurred in iteration=2, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 127.9ms AutomataMinimizationTime, 11 MinimizatonAttempts, 150 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.7ms SsaConstructionTime, 218.6ms SatisfiabilityAnalysisTime, 530.6ms InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 440 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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! [2021-09-22 14:51:47,000 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...