./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe033_tso.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/safe033_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 51e6a13673efe5b33c2463d1fc46db9521e3a5a8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 03:08:15,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:08:15,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:08:15,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:08:15,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:08:15,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:08:15,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:08:15,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:08:15,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:08:15,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:08:15,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:08:15,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:08:15,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:08:15,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:08:15,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:08:15,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:08:15,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:08:15,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:08:15,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:08:15,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:08:15,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:08:15,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:08:15,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:08:15,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:08:15,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:08:15,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:08:15,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:08:15,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:08:15,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:08:15,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:08:15,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:08:15,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:08:15,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:08:15,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:08:15,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:08:15,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:08:15,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:08:15,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:08:15,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:08:15,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:08:15,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:08:15,307 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:08:15,328 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:08:15,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:08:15,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:08:15,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:08:15,330 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:08:15,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:08:15,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:08:15,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:08:15,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:08:15,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:08:15,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:08:15,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:08:15,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:08:15,332 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:08:15,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:08:15,332 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:08:15,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:08:15,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:08:15,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:08:15,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:08:15,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:08:15,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:08:15,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:08:15,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:08:15,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:08:15,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:08:15,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:08:15,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:08:15,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:08:15,335 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 -> 51e6a13673efe5b33c2463d1fc46db9521e3a5a8 [2020-10-20 03:08:15,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:08:15,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:08:15,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:08:15,567 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:08:15,567 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:08:15,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe033_tso.opt.i [2020-10-20 03:08:15,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeb730f5e/7b6209fd3f694aac888e955d5c795cba/FLAG186321ee0 [2020-10-20 03:08:16,273 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:08:16,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe033_tso.opt.i [2020-10-20 03:08:16,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeb730f5e/7b6209fd3f694aac888e955d5c795cba/FLAG186321ee0 [2020-10-20 03:08:16,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeb730f5e/7b6209fd3f694aac888e955d5c795cba [2020-10-20 03:08:16,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:08:16,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:08:16,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:08:16,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:08:16,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:08:16,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:08:16" (1/1) ... [2020-10-20 03:08:16,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577edb5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:16, skipping insertion in model container [2020-10-20 03:08:16,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:08:16" (1/1) ... [2020-10-20 03:08:16,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:08:16,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:08:17,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:08:17,143 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:08:17,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:08:17,294 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:08:17,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:17 WrapperNode [2020-10-20 03:08:17,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:08:17,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:08:17,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:08:17,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:08:17,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:17" (1/1) ... [2020-10-20 03:08:17,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:17" (1/1) ... [2020-10-20 03:08:17,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:08:17,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:08:17,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:08:17,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:08:17,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:17" (1/1) ... [2020-10-20 03:08:17,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:17" (1/1) ... [2020-10-20 03:08:17,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:17" (1/1) ... [2020-10-20 03:08:17,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:17" (1/1) ... [2020-10-20 03:08:17,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:17" (1/1) ... [2020-10-20 03:08:17,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:17" (1/1) ... [2020-10-20 03:08:17,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:17" (1/1) ... [2020-10-20 03:08:17,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:08:17,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:08:17,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:08:17,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:08:17,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:17" (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 03:08:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:08:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:08:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:08:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:08:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:08:17,462 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:08:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:08:17,462 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:08:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:08:17,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:08:17,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:08:17,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:08:17,465 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 03:08:17,862 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:08:17,862 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:08:17,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:08:17 BoogieIcfgContainer [2020-10-20 03:08:17,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:08:17,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:08:17,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:08:17,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:08:17,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:08:16" (1/3) ... [2020-10-20 03:08:17,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442e9138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:08:17, skipping insertion in model container [2020-10-20 03:08:17,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:17" (2/3) ... [2020-10-20 03:08:17,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442e9138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:08:17, skipping insertion in model container [2020-10-20 03:08:17,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:08:17" (3/3) ... [2020-10-20 03:08:17,873 INFO L111 eAbstractionObserver]: Analyzing ICFG safe033_tso.opt.i [2020-10-20 03:08:17,896 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:08:17,896 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:08:17,904 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:08:17,905 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:08:17,930 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,931 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,931 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,931 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,932 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,932 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,932 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,933 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,933 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,933 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,933 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,933 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,945 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,945 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,945 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,946 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:17,950 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:08:17,965 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 03:08:17,986 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:08:17,987 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:08:17,987 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:08:17,987 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:08:17,987 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:08:17,987 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:08:17,987 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:08:17,987 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:08:18,000 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:08:18,002 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 64 transitions, 138 flow [2020-10-20 03:08:18,005 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 64 transitions, 138 flow [2020-10-20 03:08:18,006 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 68 places, 64 transitions, 138 flow [2020-10-20 03:08:18,051 INFO L129 PetriNetUnfolder]: 3/62 cut-off events. [2020-10-20 03:08:18,051 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:08:18,056 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 62 events. 3/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-10-20 03:08:18,058 INFO L117 LiptonReduction]: Number of co-enabled transitions 792 [2020-10-20 03:08:19,710 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-20 03:08:20,003 INFO L132 LiptonReduction]: Checked pairs total: 1620 [2020-10-20 03:08:20,003 INFO L134 LiptonReduction]: Total number of compositions: 67 [2020-10-20 03:08:20,010 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-10-20 03:08:20,024 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-10-20 03:08:20,026 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-20 03:08:20,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 03:08:20,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:20,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 03:08:20,035 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:20,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:20,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1340707883, now seen corresponding path program 1 times [2020-10-20 03:08:20,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:20,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237204704] [2020-10-20 03:08:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:20,287 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 03:08:20,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237204704] [2020-10-20 03:08:20,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:20,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:08:20,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937419619] [2020-10-20 03:08:20,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:08:20,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:20,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:08:20,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:08:20,317 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-10-20 03:08:20,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:20,355 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-10-20 03:08:20,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:08:20,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-20 03:08:20,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:20,370 INFO L225 Difference]: With dead ends: 72 [2020-10-20 03:08:20,370 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 03:08:20,372 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 03:08:20,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 03:08:20,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-20 03:08:20,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-20 03:08:20,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-10-20 03:08:20,419 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-10-20 03:08:20,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:20,420 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-10-20 03:08:20,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:08:20,420 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-10-20 03:08:20,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 03:08:20,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:20,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:20,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:08:20,422 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:20,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:20,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1368723103, now seen corresponding path program 1 times [2020-10-20 03:08:20,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:20,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241680933] [2020-10-20 03:08:20,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:20,530 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 03:08:20,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241680933] [2020-10-20 03:08:20,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:20,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:08:20,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108902433] [2020-10-20 03:08:20,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:08:20,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:20,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:08:20,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:08:20,534 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 4 states. [2020-10-20 03:08:20,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:20,564 INFO L93 Difference]: Finished difference Result 56 states and 99 transitions. [2020-10-20 03:08:20,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:08:20,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 03:08:20,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:20,566 INFO L225 Difference]: With dead ends: 56 [2020-10-20 03:08:20,566 INFO L226 Difference]: Without dead ends: 40 [2020-10-20 03:08:20,567 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 03:08:20,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-20 03:08:20,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-20 03:08:20,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-20 03:08:20,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-10-20 03:08:20,573 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 7 [2020-10-20 03:08:20,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:20,574 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-10-20 03:08:20,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:08:20,574 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-10-20 03:08:20,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:08:20,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:20,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:20,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:08:20,575 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:20,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:20,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1081707285, now seen corresponding path program 1 times [2020-10-20 03:08:20,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:20,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474466288] [2020-10-20 03:08:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:20,658 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 03:08:20,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474466288] [2020-10-20 03:08:20,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:20,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:08:20,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683596363] [2020-10-20 03:08:20,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:08:20,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:20,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:08:20,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:08:20,662 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-10-20 03:08:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:20,704 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2020-10-20 03:08:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:08:20,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-20 03:08:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:20,705 INFO L225 Difference]: With dead ends: 35 [2020-10-20 03:08:20,705 INFO L226 Difference]: Without dead ends: 28 [2020-10-20 03:08:20,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:08:20,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-20 03:08:20,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-20 03:08:20,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-20 03:08:20,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-10-20 03:08:20,710 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2020-10-20 03:08:20,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:20,710 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-10-20 03:08:20,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:08:20,710 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-10-20 03:08:20,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:08:20,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:20,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:20,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:08:20,712 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:20,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:20,712 INFO L82 PathProgramCache]: Analyzing trace with hash 370642726, now seen corresponding path program 1 times [2020-10-20 03:08:20,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:20,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308180497] [2020-10-20 03:08:20,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:20,756 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 03:08:20,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308180497] [2020-10-20 03:08:20,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:20,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:08:20,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075130792] [2020-10-20 03:08:20,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:08:20,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:20,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:08:20,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:08:20,758 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 4 states. [2020-10-20 03:08:20,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:20,773 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2020-10-20 03:08:20,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:08:20,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 03:08:20,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:20,775 INFO L225 Difference]: With dead ends: 35 [2020-10-20 03:08:20,775 INFO L226 Difference]: Without dead ends: 22 [2020-10-20 03:08:20,775 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 03:08:20,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-20 03:08:20,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-20 03:08:20,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 03:08:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-10-20 03:08:20,779 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 12 [2020-10-20 03:08:20,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:20,779 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-10-20 03:08:20,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:08:20,779 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-10-20 03:08:20,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:08:20,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:20,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:20,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:08:20,780 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:20,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:20,781 INFO L82 PathProgramCache]: Analyzing trace with hash -7959878, now seen corresponding path program 2 times [2020-10-20 03:08:20,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:20,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790616917] [2020-10-20 03:08:20,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:20,826 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 03:08:20,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790616917] [2020-10-20 03:08:20,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:20,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:08:20,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985100878] [2020-10-20 03:08:20,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:08:20,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:20,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:08:20,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:08:20,829 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 3 states. [2020-10-20 03:08:20,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:20,837 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-10-20 03:08:20,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:08:20,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-20 03:08:20,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:20,841 INFO L225 Difference]: With dead ends: 21 [2020-10-20 03:08:20,841 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:08:20,841 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 03:08:20,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:08:20,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:08:20,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:08:20,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:08:20,842 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-20 03:08:20,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:20,843 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:08:20,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:08:20,843 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:08:20,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:08:20,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:08:20,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:08:20 BasicIcfg [2020-10-20 03:08:20,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:08:20,847 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:08:20,847 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:08:20,848 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:08:20,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:08:17" (3/4) ... [2020-10-20 03:08:20,852 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:08:20,862 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:08:20,863 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:08:20,870 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-10-20 03:08:20,870 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:08:20,871 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:08:20,871 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:08:20,941 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:08:20,942 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:08:20,943 INFO L168 Benchmark]: Toolchain (without parser) took 4291.96 ms. Allocated memory was 36.7 MB in the beginning and 69.7 MB in the end (delta: 33.0 MB). Free memory was 18.4 MB in the beginning and 7.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:20,944 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 33.6 MB. Free memory was 11.9 MB in the beginning and 11.8 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-20 03:08:20,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.11 ms. Allocated memory was 36.7 MB in the beginning and 46.7 MB in the end (delta: 10.0 MB). Free memory was 17.5 MB in the beginning and 19.9 MB in the end (delta: -2.4 MB). Peak memory consumption was 17.1 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:20,946 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.34 ms. Allocated memory is still 46.7 MB. Free memory was 19.9 MB in the beginning and 17.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:20,946 INFO L168 Benchmark]: Boogie Preprocessor took 30.76 ms. Allocated memory is still 46.7 MB. Free memory was 17.7 MB in the beginning and 16.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:20,947 INFO L168 Benchmark]: RCFGBuilder took 484.22 ms. Allocated memory is still 46.7 MB. Free memory was 16.1 MB in the beginning and 11.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 5.8 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:20,948 INFO L168 Benchmark]: TraceAbstraction took 2980.90 ms. Allocated memory was 46.7 MB in the beginning and 69.7 MB in the end (delta: 23.1 MB). Free memory was 11.5 MB in the beginning and 11.5 MB in the end (delta: 21.0 kB). Peak memory consumption was 23.1 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:20,948 INFO L168 Benchmark]: Witness Printer took 94.38 ms. Allocated memory is still 69.7 MB. Free memory was 10.7 MB in the beginning and 7.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:20,952 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 33.6 MB. Free memory was 11.9 MB in the beginning and 11.8 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 635.11 ms. Allocated memory was 36.7 MB in the beginning and 46.7 MB in the end (delta: 10.0 MB). Free memory was 17.5 MB in the beginning and 19.9 MB in the end (delta: -2.4 MB). Peak memory consumption was 17.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 53.34 ms. Allocated memory is still 46.7 MB. Free memory was 19.9 MB in the beginning and 17.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 30.76 ms. Allocated memory is still 46.7 MB. Free memory was 17.7 MB in the beginning and 16.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 484.22 ms. Allocated memory is still 46.7 MB. Free memory was 16.1 MB in the beginning and 11.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 5.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2980.90 ms. Allocated memory was 46.7 MB in the beginning and 69.7 MB in the end (delta: 23.1 MB). Free memory was 11.5 MB in the beginning and 11.5 MB in the end (delta: 21.0 kB). Peak memory consumption was 23.1 MB. Max. memory is 14.3 GB. * Witness Printer took 94.38 ms. Allocated memory is still 69.7 MB. Free memory was 10.7 MB in the beginning and 7.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 565 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 30 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 68 PlacesBefore, 22 PlacesAfterwards, 64 TransitionsBefore, 15 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 67 TotalNumberOfCompositions, 1620 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 3 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 58 SDtfs, 56 SDslu, 50 SDs, 0 SdLazy, 32 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 815 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...