./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe025_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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_pso.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 8629328e258ffe2856bf08bdfdc740db811f6a10 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 03:06:48,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:06:48,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:06:48,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:06:48,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:06:48,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:06:48,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:06:48,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:06:48,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:06:48,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:06:48,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:06:48,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:06:48,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:06:48,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:06:48,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:06:48,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:06:48,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:06:48,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:06:48,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:06:48,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:06:48,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:06:48,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:06:48,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:06:48,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:06:48,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:06:48,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:06:48,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:06:48,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:06:48,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:06:48,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:06:48,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:06:48,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:06:48,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:06:48,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:06:48,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:06:48,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:06:48,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:06:48,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:06:48,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:06:48,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:06:48,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:06:48,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:06:48,166 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:06:48,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:06:48,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:06:48,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:06:48,168 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:06:48,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:06:48,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:06:48,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:06:48,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:06:48,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:06:48,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:06:48,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:06:48,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:06:48,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:06:48,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:06:48,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:06:48,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:06:48,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:06:48,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:06:48,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:06:48,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:06:48,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:06:48,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:06:48,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:06:48,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:06:48,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:06:48,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:06:48,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:06:48,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:06:48,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 8629328e258ffe2856bf08bdfdc740db811f6a10 [2020-10-20 03:06:48,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:06:48,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:06:48,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:06:48,393 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:06:48,394 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:06:48,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe025_pso.opt.i [2020-10-20 03:06:48,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa72cc11/ad2161f9b16d48fdbc16c50f738a513f/FLAGdffcfc2ec [2020-10-20 03:06:49,037 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:06:49,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe025_pso.opt.i [2020-10-20 03:06:49,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa72cc11/ad2161f9b16d48fdbc16c50f738a513f/FLAGdffcfc2ec [2020-10-20 03:06:49,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa72cc11/ad2161f9b16d48fdbc16c50f738a513f [2020-10-20 03:06:49,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:06:49,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:06:49,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:06:49,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:06:49,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:06:49,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:06:49" (1/1) ... [2020-10-20 03:06:49,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c78070d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:49, skipping insertion in model container [2020-10-20 03:06:49,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:06:49" (1/1) ... [2020-10-20 03:06:49,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:06:49,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:06:49,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:06:49,914 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:06:49,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:06:50,093 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:06:50,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:50 WrapperNode [2020-10-20 03:06:50,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:06:50,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:06:50,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:06:50,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:06:50,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:50" (1/1) ... [2020-10-20 03:06:50,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:50" (1/1) ... [2020-10-20 03:06:50,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:06:50,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:06:50,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:06:50,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:06:50,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:50" (1/1) ... [2020-10-20 03:06:50,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:50" (1/1) ... [2020-10-20 03:06:50,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:50" (1/1) ... [2020-10-20 03:06:50,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:50" (1/1) ... [2020-10-20 03:06:50,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:50" (1/1) ... [2020-10-20 03:06:50,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:50" (1/1) ... [2020-10-20 03:06:50,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:50" (1/1) ... [2020-10-20 03:06:50,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:06:50,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:06:50,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:06:50,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:06:50,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:06:50,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:06:50,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:06:50,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:06:50,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:06:50,267 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:06:50,267 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:06:50,267 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:06:50,267 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:06:50,268 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:06:50,268 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:06:50,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:06:50,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:06:50,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:06:50,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:06:50,271 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 03:06:50,642 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:06:50,642 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:06:50,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:06:50 BoogieIcfgContainer [2020-10-20 03:06:50,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:06:50,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:06:50,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:06:50,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:06:50,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:06:49" (1/3) ... [2020-10-20 03:06:50,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76be6e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:06:50, skipping insertion in model container [2020-10-20 03:06:50,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:50" (2/3) ... [2020-10-20 03:06:50,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76be6e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:06:50, skipping insertion in model container [2020-10-20 03:06:50,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:06:50" (3/3) ... [2020-10-20 03:06:50,667 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.opt.i [2020-10-20 03:06:50,690 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:06:50,691 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:06:50,700 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:06:50,701 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:06:50,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,733 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,733 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,733 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,733 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,734 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,735 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,735 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,735 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,735 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,736 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,736 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,737 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,737 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,742 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,742 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,742 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,742 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,749 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,749 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,749 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,750 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,752 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,752 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,753 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,753 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:50,766 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:06:50,782 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:06:50,806 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:06:50,806 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:06:50,807 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:06:50,807 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:06:50,807 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:06:50,807 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:06:50,808 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:06:50,808 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:06:50,828 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:06:50,838 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:06:50,844 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:06:50,847 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-20 03:06:50,918 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-20 03:06:50,919 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:06:50,924 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-20 03:06:50,927 INFO L117 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-20 03:06:52,998 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-20 03:06:53,206 INFO L132 LiptonReduction]: Checked pairs total: 2926 [2020-10-20 03:06:53,206 INFO L134 LiptonReduction]: Total number of compositions: 72 [2020-10-20 03:06:53,213 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-20 03:06:53,241 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-20 03:06:53,244 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-20 03:06:53,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:06:53,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:53,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:53,254 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:53,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:53,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1098074663, now seen corresponding path program 1 times [2020-10-20 03:06:53,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:53,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918614323] [2020-10-20 03:06:53,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:53,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:53,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918614323] [2020-10-20 03:06:53,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:53,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:06:53,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776120790] [2020-10-20 03:06:53,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:06:53,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:53,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:06:53,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:53,517 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-20 03:06:53,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:53,577 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-20 03:06:53,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:06:53,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 03:06:53,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:53,597 INFO L225 Difference]: With dead ends: 282 [2020-10-20 03:06:53,597 INFO L226 Difference]: Without dead ends: 218 [2020-10-20 03:06:53,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:53,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-20 03:06:53,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-20 03:06:53,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-20 03:06:53,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-20 03:06:53,672 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-20 03:06:53,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:53,675 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-20 03:06:53,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:06:53,675 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-20 03:06:53,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:06:53,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:53,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:53,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:06:53,678 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:53,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:53,678 INFO L82 PathProgramCache]: Analyzing trace with hash 305615834, now seen corresponding path program 1 times [2020-10-20 03:06:53,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:53,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787318106] [2020-10-20 03:06:53,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:53,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:53,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787318106] [2020-10-20 03:06:53,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:53,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:06:53,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958994989] [2020-10-20 03:06:53,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:06:53,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:53,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:06:53,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:53,780 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-10-20 03:06:53,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:53,797 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-20 03:06:53,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:06:53,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 03:06:53,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:53,800 INFO L225 Difference]: With dead ends: 202 [2020-10-20 03:06:53,800 INFO L226 Difference]: Without dead ends: 202 [2020-10-20 03:06:53,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:53,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-20 03:06:53,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-20 03:06:53,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-20 03:06:53,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-20 03:06:53,831 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-20 03:06:53,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:53,833 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-20 03:06:53,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:06:53,833 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-20 03:06:53,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:06:53,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:53,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:53,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:06:53,839 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:53,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:53,839 INFO L82 PathProgramCache]: Analyzing trace with hash 839872088, now seen corresponding path program 1 times [2020-10-20 03:06:53,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:53,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849292899] [2020-10-20 03:06:53,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:53,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:53,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849292899] [2020-10-20 03:06:53,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:53,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:06:53,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402388996] [2020-10-20 03:06:53,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:06:53,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:53,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:06:53,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:53,900 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-20 03:06:53,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:53,907 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-10-20 03:06:53,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:06:53,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-20 03:06:53,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:53,910 INFO L225 Difference]: With dead ends: 194 [2020-10-20 03:06:53,911 INFO L226 Difference]: Without dead ends: 194 [2020-10-20 03:06:53,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:53,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-20 03:06:53,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-20 03:06:53,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-20 03:06:53,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-10-20 03:06:53,926 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-10-20 03:06:53,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:53,927 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-10-20 03:06:53,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:06:53,927 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-10-20 03:06:53,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:06:53,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:53,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:53,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:06:53,930 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:53,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:53,930 INFO L82 PathProgramCache]: Analyzing trace with hash 266199867, now seen corresponding path program 1 times [2020-10-20 03:06:53,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:53,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162735075] [2020-10-20 03:06:53,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:54,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:54,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162735075] [2020-10-20 03:06:54,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:54,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:06:54,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808167672] [2020-10-20 03:06:54,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:06:54,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:54,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:06:54,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:06:54,018 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-10-20 03:06:54,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:54,063 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2020-10-20 03:06:54,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:06:54,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 03:06:54,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:54,066 INFO L225 Difference]: With dead ends: 225 [2020-10-20 03:06:54,066 INFO L226 Difference]: Without dead ends: 161 [2020-10-20 03:06:54,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:06:54,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-20 03:06:54,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-10-20 03:06:54,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-20 03:06:54,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 386 transitions. [2020-10-20 03:06:54,077 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 386 transitions. Word has length 11 [2020-10-20 03:06:54,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:54,077 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 386 transitions. [2020-10-20 03:06:54,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:06:54,078 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 386 transitions. [2020-10-20 03:06:54,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:06:54,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:54,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:54,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:06:54,082 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:54,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:54,083 INFO L82 PathProgramCache]: Analyzing trace with hash -297551950, now seen corresponding path program 1 times [2020-10-20 03:06:54,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:54,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924623602] [2020-10-20 03:06:54,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:54,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924623602] [2020-10-20 03:06:54,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:54,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:06:54,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988396356] [2020-10-20 03:06:54,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:06:54,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:54,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:06:54,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:06:54,148 INFO L87 Difference]: Start difference. First operand 161 states and 386 transitions. Second operand 5 states. [2020-10-20 03:06:54,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:54,210 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-10-20 03:06:54,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:06:54,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 03:06:54,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:54,213 INFO L225 Difference]: With dead ends: 160 [2020-10-20 03:06:54,213 INFO L226 Difference]: Without dead ends: 123 [2020-10-20 03:06:54,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:06:54,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-20 03:06:54,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-20 03:06:54,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-20 03:06:54,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-10-20 03:06:54,222 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-10-20 03:06:54,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:54,222 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-10-20 03:06:54,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:06:54,223 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-10-20 03:06:54,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:06:54,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:54,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:54,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:06:54,225 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:54,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:54,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1813731877, now seen corresponding path program 1 times [2020-10-20 03:06:54,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:54,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306518725] [2020-10-20 03:06:54,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:54,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:54,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306518725] [2020-10-20 03:06:54,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:54,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:06:54,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986442152] [2020-10-20 03:06:54,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:06:54,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:54,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:06:54,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:06:54,287 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-10-20 03:06:54,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:54,338 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-10-20 03:06:54,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:06:54,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-20 03:06:54,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:54,341 INFO L225 Difference]: With dead ends: 118 [2020-10-20 03:06:54,341 INFO L226 Difference]: Without dead ends: 108 [2020-10-20 03:06:54,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:06:54,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-20 03:06:54,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-20 03:06:54,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-20 03:06:54,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-10-20 03:06:54,347 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-10-20 03:06:54,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:54,347 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-10-20 03:06:54,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:06:54,347 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-10-20 03:06:54,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:06:54,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:54,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:54,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:06:54,351 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:54,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:54,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1641541318, now seen corresponding path program 1 times [2020-10-20 03:06:54,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:54,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847038447] [2020-10-20 03:06:54,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:54,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847038447] [2020-10-20 03:06:54,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:54,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:06:54,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031947073] [2020-10-20 03:06:54,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:06:54,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:54,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:06:54,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:06:54,392 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-10-20 03:06:54,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:54,407 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-10-20 03:06:54,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:06:54,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-20 03:06:54,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:54,408 INFO L225 Difference]: With dead ends: 133 [2020-10-20 03:06:54,408 INFO L226 Difference]: Without dead ends: 54 [2020-10-20 03:06:54,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:06:54,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-20 03:06:54,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-20 03:06:54,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-20 03:06:54,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-10-20 03:06:54,413 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-10-20 03:06:54,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:54,414 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-10-20 03:06:54,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:06:54,414 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-10-20 03:06:54,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:06:54,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:54,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:54,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:06:54,415 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:54,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:54,416 INFO L82 PathProgramCache]: Analyzing trace with hash -2114303388, now seen corresponding path program 2 times [2020-10-20 03:06:54,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:54,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853867605] [2020-10-20 03:06:54,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:54,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853867605] [2020-10-20 03:06:54,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:54,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:06:54,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790320985] [2020-10-20 03:06:54,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:06:54,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:54,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:06:54,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:06:54,498 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-10-20 03:06:54,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:54,530 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-10-20 03:06:54,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:06:54,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-20 03:06:54,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:54,531 INFO L225 Difference]: With dead ends: 63 [2020-10-20 03:06:54,531 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 03:06:54,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:06:54,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 03:06:54,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-20 03:06:54,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 03:06:54,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-10-20 03:06:54,535 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-10-20 03:06:54,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:54,539 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-10-20 03:06:54,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:06:54,539 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-10-20 03:06:54,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:06:54,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:54,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:54,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:06:54,540 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:54,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:54,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1534085368, now seen corresponding path program 3 times [2020-10-20 03:06:54,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:54,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768682716] [2020-10-20 03:06:54,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:54,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768682716] [2020-10-20 03:06:54,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:54,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:06:54,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258712730] [2020-10-20 03:06:54,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:06:54,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:54,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:06:54,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:06:54,624 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-10-20 03:06:54,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:54,648 INFO L93 Difference]: Finished difference Result 51 states and 83 transitions. [2020-10-20 03:06:54,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:06:54,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-20 03:06:54,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:54,649 INFO L225 Difference]: With dead ends: 51 [2020-10-20 03:06:54,650 INFO L226 Difference]: Without dead ends: 30 [2020-10-20 03:06:54,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:06:54,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-20 03:06:54,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-20 03:06:54,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 03:06:54,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-10-20 03:06:54,655 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-10-20 03:06:54,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:54,655 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-10-20 03:06:54,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:06:54,656 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-10-20 03:06:54,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:06:54,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:54,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:54,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 03:06:54,657 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:54,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:54,657 INFO L82 PathProgramCache]: Analyzing trace with hash 172930902, now seen corresponding path program 4 times [2020-10-20 03:06:54,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:54,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455273576] [2020-10-20 03:06:54,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:06:54,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455273576] [2020-10-20 03:06:54,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:54,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:06:54,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485855093] [2020-10-20 03:06:54,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:06:54,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:54,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:06:54,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:06:54,749 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-10-20 03:06:54,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:54,765 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-10-20 03:06:54,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:06:54,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-20 03:06:54,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:54,766 INFO L225 Difference]: With dead ends: 29 [2020-10-20 03:06:54,767 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:06:54,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:06:54,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:06:54,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:06:54,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:06:54,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:06:54,768 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-20 03:06:54,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:54,768 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:06:54,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:06:54,769 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:06:54,769 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:06:54,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 03:06:54,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:06:54 BasicIcfg [2020-10-20 03:06:54,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:06:54,776 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:06:54,776 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:06:54,776 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:06:54,777 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:06:50" (3/4) ... [2020-10-20 03:06:54,781 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:06:54,790 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:06:54,791 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:06:54,791 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:06:54,798 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:06:54,798 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:06:54,799 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:06:54,799 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:06:54,873 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:06:54,873 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:06:54,875 INFO L168 Benchmark]: Toolchain (without parser) took 5564.42 ms. Allocated memory was 34.6 MB in the beginning and 76.5 MB in the end (delta: 41.9 MB). Free memory was 10.6 MB in the beginning and 25.3 MB in the end (delta: -14.8 MB). Peak memory consumption was 27.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:54,875 INFO L168 Benchmark]: CDTParser took 1.05 ms. Allocated memory is still 33.6 MB. Free memory was 18.6 MB in the beginning and 18.5 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-20 03:06:54,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 777.50 ms. Allocated memory was 34.6 MB in the beginning and 44.0 MB in the end (delta: 9.4 MB). Free memory was 9.7 MB in the beginning and 15.1 MB in the end (delta: -5.4 MB). Peak memory consumption was 9.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:54,877 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.58 ms. Allocated memory was 44.0 MB in the beginning and 44.6 MB in the end (delta: 524.3 kB). Free memory was 15.1 MB in the beginning and 27.8 MB in the end (delta: -12.7 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:54,877 INFO L168 Benchmark]: Boogie Preprocessor took 29.59 ms. Allocated memory is still 44.6 MB. Free memory was 27.8 MB in the beginning and 26.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:54,878 INFO L168 Benchmark]: RCFGBuilder took 467.77 ms. Allocated memory was 44.6 MB in the beginning and 45.1 MB in the end (delta: 524.3 kB). Free memory was 26.1 MB in the beginning and 17.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 16.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:54,878 INFO L168 Benchmark]: TraceAbstraction took 4127.00 ms. Allocated memory was 45.1 MB in the beginning and 76.5 MB in the end (delta: 31.5 MB). Free memory was 17.1 MB in the beginning and 29.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:54,879 INFO L168 Benchmark]: Witness Printer took 97.22 ms. Allocated memory is still 76.5 MB. Free memory was 29.0 MB in the beginning and 25.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:54,882 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.05 ms. Allocated memory is still 33.6 MB. Free memory was 18.6 MB in the beginning and 18.5 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 777.50 ms. Allocated memory was 34.6 MB in the beginning and 44.0 MB in the end (delta: 9.4 MB). Free memory was 9.7 MB in the beginning and 15.1 MB in the end (delta: -5.4 MB). Peak memory consumption was 9.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 54.58 ms. Allocated memory was 44.0 MB in the beginning and 44.6 MB in the end (delta: 524.3 kB). Free memory was 15.1 MB in the beginning and 27.8 MB in the end (delta: -12.7 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 29.59 ms. Allocated memory is still 44.6 MB. Free memory was 27.8 MB in the beginning and 26.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 467.77 ms. Allocated memory was 44.6 MB in the beginning and 45.1 MB in the end (delta: 524.3 kB). Free memory was 26.1 MB in the beginning and 17.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 16.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4127.00 ms. Allocated memory was 45.1 MB in the beginning and 76.5 MB in the end (delta: 31.5 MB). Free memory was 17.1 MB in the beginning and 29.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 14.3 GB. * Witness Printer took 97.22 ms. Allocated memory is still 76.5 MB. Free memory was 29.0 MB in the beginning and 25.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1015 VarBasedMoverChecksPositive, 51 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.3s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2926 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 206 SDtfs, 147 SDslu, 245 SDs, 0 SdLazy, 128 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4352 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...