./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/safe016_pso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b55cd39bd506cf3dcd548eec1f2cee49419f161 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 18:28:56,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 18:28:56,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 18:28:56,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 18:28:56,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 18:28:56,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 18:28:56,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 18:28:56,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 18:28:56,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 18:28:56,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 18:28:56,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 18:28:56,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 18:28:56,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 18:28:56,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 18:28:56,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 18:28:56,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 18:28:56,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 18:28:56,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 18:28:56,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 18:28:56,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 18:28:56,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 18:28:56,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 18:28:56,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 18:28:56,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 18:28:56,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 18:28:56,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 18:28:56,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 18:28:56,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 18:28:56,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 18:28:56,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 18:28:56,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 18:28:56,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 18:28:56,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 18:28:56,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 18:28:56,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 18:28:56,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 18:28:56,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 18:28:56,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 18:28:56,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 18:28:56,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 18:28:56,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 18:28:56,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 18:28:56,390 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 18:28:56,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 18:28:56,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 18:28:56,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 18:28:56,395 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 18:28:56,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 18:28:56,398 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 18:28:56,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 18:28:56,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 18:28:56,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 18:28:56,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 18:28:56,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 18:28:56,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 18:28:56,400 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 18:28:56,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 18:28:56,401 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 18:28:56,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 18:28:56,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 18:28:56,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 18:28:56,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 18:28:56,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 18:28:56,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 18:28:56,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 18:28:56,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 18:28:56,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 18:28:56,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 18:28:56,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 18:28:56,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 18:28:56,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 18:28:56,405 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(__VERIFIER_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 -> 5b55cd39bd506cf3dcd548eec1f2cee49419f161 [2019-11-28 18:28:56,727 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 18:28:56,748 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 18:28:56,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 18:28:56,754 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 18:28:56,755 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 18:28:56,756 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i [2019-11-28 18:28:56,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf1f4fbb/e112a7cdd6eb4e3092996424df41b700/FLAG807fcfacc [2019-11-28 18:28:57,399 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 18:28:57,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i [2019-11-28 18:28:57,415 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf1f4fbb/e112a7cdd6eb4e3092996424df41b700/FLAG807fcfacc [2019-11-28 18:28:57,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf1f4fbb/e112a7cdd6eb4e3092996424df41b700 [2019-11-28 18:28:57,673 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 18:28:57,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 18:28:57,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 18:28:57,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 18:28:57,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 18:28:57,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:28:57" (1/1) ... [2019-11-28 18:28:57,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@737469c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:57, skipping insertion in model container [2019-11-28 18:28:57,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:28:57" (1/1) ... [2019-11-28 18:28:57,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 18:28:57,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 18:28:58,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:28:58,303 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 18:28:58,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:28:58,464 INFO L208 MainTranslator]: Completed translation [2019-11-28 18:28:58,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:58 WrapperNode [2019-11-28 18:28:58,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 18:28:58,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 18:28:58,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 18:28:58,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 18:28:58,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:58" (1/1) ... [2019-11-28 18:28:58,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:58" (1/1) ... [2019-11-28 18:28:58,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 18:28:58,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 18:28:58,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 18:28:58,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 18:28:58,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:58" (1/1) ... [2019-11-28 18:28:58,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:58" (1/1) ... [2019-11-28 18:28:58,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:58" (1/1) ... [2019-11-28 18:28:58,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:58" (1/1) ... [2019-11-28 18:28:58,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:58" (1/1) ... [2019-11-28 18:28:58,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:58" (1/1) ... [2019-11-28 18:28:58,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:58" (1/1) ... [2019-11-28 18:28:58,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 18:28:58,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 18:28:58,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 18:28:58,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 18:28:58,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:58" (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 [2019-11-28 18:28:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 18:28:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-28 18:28:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 18:28:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 18:28:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-28 18:28:58,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-28 18:28:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-28 18:28:58,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-28 18:28:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-28 18:28:58,644 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-28 18:28:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-11-28 18:28:58,644 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-11-28 18:28:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-28 18:28:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 18:28:58,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 18:28:58,646 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-28 18:28:59,004 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 18:28:59,005 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 18:28:59,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:28:59 BoogieIcfgContainer [2019-11-28 18:28:59,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 18:28:59,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 18:28:59,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 18:28:59,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 18:28:59,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:28:57" (1/3) ... [2019-11-28 18:28:59,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ff2bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:28:59, skipping insertion in model container [2019-11-28 18:28:59,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:58" (2/3) ... [2019-11-28 18:28:59,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ff2bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:28:59, skipping insertion in model container [2019-11-28 18:28:59,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:28:59" (3/3) ... [2019-11-28 18:28:59,015 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2019-11-28 18:28:59,023 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-28 18:28:59,023 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 18:28:59,030 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 18:28:59,031 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-11-28 18:28:59,061 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,062 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,062 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,063 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,063 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,063 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,064 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,064 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,064 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,065 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,065 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,065 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,066 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,066 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,066 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,067 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,067 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,067 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,068 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,068 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,069 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,069 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,069 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,070 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:59,094 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-28 18:28:59,116 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 18:28:59,116 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 18:28:59,116 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 18:28:59,117 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 18:28:59,117 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 18:28:59,117 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 18:28:59,117 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 18:28:59,117 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 18:28:59,129 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 63 transitions [2019-11-28 18:28:59,131 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 75 places, 63 transitions [2019-11-28 18:28:59,176 INFO L134 PetriNetUnfolder]: 1/59 cut-off events. [2019-11-28 18:28:59,176 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:28:59,184 INFO L76 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs. 12/69 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-11-28 18:28:59,187 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 75 places, 63 transitions [2019-11-28 18:28:59,208 INFO L134 PetriNetUnfolder]: 1/59 cut-off events. [2019-11-28 18:28:59,208 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:28:59,210 INFO L76 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs. 12/69 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-11-28 18:28:59,212 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 732 [2019-11-28 18:28:59,214 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-11-28 18:29:00,838 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-11-28 18:29:01,040 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2019-11-28 18:29:01,161 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2019-11-28 18:29:01,265 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-11-28 18:29:01,324 INFO L206 etLargeBlockEncoding]: Checked pairs total: 749 [2019-11-28 18:29:01,325 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2019-11-28 18:29:01,329 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 19 transitions [2019-11-28 18:29:01,345 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 94 states. [2019-11-28 18:29:01,347 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2019-11-28 18:29:01,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 18:29:01,358 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:01,359 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:01,360 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:01,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:01,367 INFO L82 PathProgramCache]: Analyzing trace with hash 364087523, now seen corresponding path program 1 times [2019-11-28 18:29:01,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:01,377 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237988271] [2019-11-28 18:29:01,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:01,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:29:01,775 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237988271] [2019-11-28 18:29:01,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:01,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 18:29:01,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789456986] [2019-11-28 18:29:01,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 18:29:01,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:01,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 18:29:01,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 18:29:01,801 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2019-11-28 18:29:01,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:01,831 INFO L93 Difference]: Finished difference Result 86 states and 212 transitions. [2019-11-28 18:29:01,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 18:29:01,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-28 18:29:01,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:01,864 INFO L225 Difference]: With dead ends: 86 [2019-11-28 18:29:01,869 INFO L226 Difference]: Without dead ends: 70 [2019-11-28 18:29:01,874 INFO L630 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 [2019-11-28 18:29:01,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-28 18:29:01,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2019-11-28 18:29:01,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-28 18:29:01,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 164 transitions. [2019-11-28 18:29:01,942 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 164 transitions. Word has length 10 [2019-11-28 18:29:01,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:01,944 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 164 transitions. [2019-11-28 18:29:01,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 18:29:01,944 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 164 transitions. [2019-11-28 18:29:01,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 18:29:01,948 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:01,951 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:01,952 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:01,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:01,953 INFO L82 PathProgramCache]: Analyzing trace with hash -662886856, now seen corresponding path program 1 times [2019-11-28 18:29:01,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:01,954 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752765473] [2019-11-28 18:29:01,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:02,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:29:02,097 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752765473] [2019-11-28 18:29:02,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:02,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:29:02,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393248431] [2019-11-28 18:29:02,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:29:02,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:02,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:29:02,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:29:02,101 INFO L87 Difference]: Start difference. First operand 70 states and 164 transitions. Second operand 4 states. [2019-11-28 18:29:02,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:02,127 INFO L93 Difference]: Finished difference Result 89 states and 189 transitions. [2019-11-28 18:29:02,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:29:02,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 18:29:02,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:02,129 INFO L225 Difference]: With dead ends: 89 [2019-11-28 18:29:02,130 INFO L226 Difference]: Without dead ends: 79 [2019-11-28 18:29:02,130 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:29:02,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-11-28 18:29:02,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2019-11-28 18:29:02,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-11-28 18:29:02,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 149 transitions. [2019-11-28 18:29:02,141 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 149 transitions. Word has length 11 [2019-11-28 18:29:02,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:02,142 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 149 transitions. [2019-11-28 18:29:02,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:29:02,142 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 149 transitions. [2019-11-28 18:29:02,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 18:29:02,143 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:02,143 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:02,143 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:02,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:02,144 INFO L82 PathProgramCache]: Analyzing trace with hash 925343788, now seen corresponding path program 1 times [2019-11-28 18:29:02,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:02,144 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709147100] [2019-11-28 18:29:02,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:02,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:29:02,255 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709147100] [2019-11-28 18:29:02,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:02,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 18:29:02,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141851296] [2019-11-28 18:29:02,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 18:29:02,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:02,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 18:29:02,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 18:29:02,257 INFO L87 Difference]: Start difference. First operand 71 states and 149 transitions. Second operand 6 states. [2019-11-28 18:29:02,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:02,359 INFO L93 Difference]: Finished difference Result 76 states and 150 transitions. [2019-11-28 18:29:02,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 18:29:02,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-28 18:29:02,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:02,360 INFO L225 Difference]: With dead ends: 76 [2019-11-28 18:29:02,360 INFO L226 Difference]: Without dead ends: 59 [2019-11-28 18:29:02,361 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-28 18:29:02,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-28 18:29:02,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2019-11-28 18:29:02,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-28 18:29:02,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 109 transitions. [2019-11-28 18:29:02,367 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 109 transitions. Word has length 12 [2019-11-28 18:29:02,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:02,368 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 109 transitions. [2019-11-28 18:29:02,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 18:29:02,368 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 109 transitions. [2019-11-28 18:29:02,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 18:29:02,369 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:02,369 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:02,369 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:02,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:02,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1348878632, now seen corresponding path program 1 times [2019-11-28 18:29:02,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:02,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711714142] [2019-11-28 18:29:02,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:29:02,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711714142] [2019-11-28 18:29:02,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:02,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 18:29:02,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723146103] [2019-11-28 18:29:02,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 18:29:02,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:02,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 18:29:02,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-28 18:29:02,493 INFO L87 Difference]: Start difference. First operand 58 states and 109 transitions. Second operand 7 states. [2019-11-28 18:29:02,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:02,608 INFO L93 Difference]: Finished difference Result 56 states and 103 transitions. [2019-11-28 18:29:02,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 18:29:02,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-11-28 18:29:02,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:02,611 INFO L225 Difference]: With dead ends: 56 [2019-11-28 18:29:02,611 INFO L226 Difference]: Without dead ends: 49 [2019-11-28 18:29:02,611 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-28 18:29:02,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-28 18:29:02,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2019-11-28 18:29:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-28 18:29:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 88 transitions. [2019-11-28 18:29:02,616 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 88 transitions. Word has length 13 [2019-11-28 18:29:02,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:02,616 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 88 transitions. [2019-11-28 18:29:02,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 18:29:02,617 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 88 transitions. [2019-11-28 18:29:02,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:29:02,617 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:02,618 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:02,619 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:02,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:02,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1134517083, now seen corresponding path program 1 times [2019-11-28 18:29:02,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:02,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813053514] [2019-11-28 18:29:02,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:02,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:29:02,710 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813053514] [2019-11-28 18:29:02,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:02,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:29:02,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825616083] [2019-11-28 18:29:02,714 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:29:02,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:02,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:29:02,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:29:02,715 INFO L87 Difference]: Start difference. First operand 45 states and 88 transitions. Second operand 5 states. [2019-11-28 18:29:02,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:02,759 INFO L93 Difference]: Finished difference Result 59 states and 104 transitions. [2019-11-28 18:29:02,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:29:02,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-28 18:29:02,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:02,761 INFO L225 Difference]: With dead ends: 59 [2019-11-28 18:29:02,761 INFO L226 Difference]: Without dead ends: 37 [2019-11-28 18:29:02,762 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-28 18:29:02,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-28 18:29:02,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2019-11-28 18:29:02,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-28 18:29:02,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 54 transitions. [2019-11-28 18:29:02,771 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 54 transitions. Word has length 14 [2019-11-28 18:29:02,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:02,772 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 54 transitions. [2019-11-28 18:29:02,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:29:02,772 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 54 transitions. [2019-11-28 18:29:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:29:02,772 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:02,772 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:02,773 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:02,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:02,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1937154369, now seen corresponding path program 2 times [2019-11-28 18:29:02,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:02,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280273619] [2019-11-28 18:29:02,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:29:02,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280273619] [2019-11-28 18:29:02,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:02,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:29:02,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604942471] [2019-11-28 18:29:02,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:29:02,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:02,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:29:02,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:29:02,893 INFO L87 Difference]: Start difference. First operand 33 states and 54 transitions. Second operand 5 states. [2019-11-28 18:29:02,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:02,930 INFO L93 Difference]: Finished difference Result 42 states and 64 transitions. [2019-11-28 18:29:02,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:29:02,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-28 18:29:02,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:02,931 INFO L225 Difference]: With dead ends: 42 [2019-11-28 18:29:02,931 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 18:29:02,932 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-28 18:29:02,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 18:29:02,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-28 18:29:02,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 18:29:02,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2019-11-28 18:29:02,935 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 14 [2019-11-28 18:29:02,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:02,935 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-11-28 18:29:02,935 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:29:02,936 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2019-11-28 18:29:02,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:29:02,936 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:02,936 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:02,936 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:02,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:02,937 INFO L82 PathProgramCache]: Analyzing trace with hash 562302313, now seen corresponding path program 3 times [2019-11-28 18:29:02,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:02,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655418847] [2019-11-28 18:29:02,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:29:02,995 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655418847] [2019-11-28 18:29:02,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:02,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:29:02,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298318096] [2019-11-28 18:29:02,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:29:02,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:02,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:29:02,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:29:02,997 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand 4 states. [2019-11-28 18:29:03,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:03,024 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2019-11-28 18:29:03,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:29:03,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 18:29:03,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:03,026 INFO L225 Difference]: With dead ends: 28 [2019-11-28 18:29:03,026 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 18:29:03,027 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:29:03,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 18:29:03,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-28 18:29:03,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 18:29:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2019-11-28 18:29:03,033 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 14 [2019-11-28 18:29:03,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:03,034 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-11-28 18:29:03,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:29:03,034 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2019-11-28 18:29:03,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:29:03,034 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:03,035 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:03,035 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:03,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:03,036 INFO L82 PathProgramCache]: Analyzing trace with hash 586461853, now seen corresponding path program 4 times [2019-11-28 18:29:03,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:03,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884941288] [2019-11-28 18:29:03,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:03,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:29:03,113 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884941288] [2019-11-28 18:29:03,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:03,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:29:03,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235233877] [2019-11-28 18:29:03,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:29:03,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:03,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:29:03,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:29:03,115 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand 4 states. [2019-11-28 18:29:03,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:03,130 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2019-11-28 18:29:03,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:29:03,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 18:29:03,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:03,131 INFO L225 Difference]: With dead ends: 22 [2019-11-28 18:29:03,132 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 18:29:03,132 INFO L630 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 [2019-11-28 18:29:03,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 18:29:03,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 18:29:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 18:29:03,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 18:29:03,133 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-11-28 18:29:03,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:03,133 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 18:29:03,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:29:03,133 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 18:29:03,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 18:29:03,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:29:03 BasicIcfg [2019-11-28 18:29:03,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 18:29:03,143 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 18:29:03,143 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 18:29:03,143 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 18:29:03,144 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:28:59" (3/4) ... [2019-11-28 18:29:03,151 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 18:29:03,160 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-28 18:29:03,160 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-28 18:29:03,160 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-28 18:29:03,163 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-11-28 18:29:03,172 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-28 18:29:03,172 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 18:29:03,172 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 18:29:03,251 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 18:29:03,251 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 18:29:03,259 INFO L168 Benchmark]: Toolchain (without parser) took 5578.48 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 224.9 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -118.5 MB). Peak memory consumption was 106.4 MB. Max. memory is 11.5 GB. [2019-11-28 18:29:03,263 INFO L168 Benchmark]: CDTParser took 1.07 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:29:03,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 788.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-28 18:29:03,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:29:03,265 INFO L168 Benchmark]: Boogie Preprocessor took 31.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-28 18:29:03,267 INFO L168 Benchmark]: RCFGBuilder took 455.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-28 18:29:03,268 INFO L168 Benchmark]: TraceAbstraction took 4135.02 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 60.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 80.6 MB. Max. memory is 11.5 GB. [2019-11-28 18:29:03,270 INFO L168 Benchmark]: Witness Printer took 108.46 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:29:03,272 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.07 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 788.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 455.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4135.02 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 60.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 80.6 MB. Max. memory is 11.5 GB. * Witness Printer took 108.46 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 75 ProgramPointsBefore, 27 ProgramPointsAfterwards, 63 TransitionsBefore, 19 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 363 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 749 CheckedPairsTotal, 49 TotalNumberOfCompositions - PositiveResult [Line: 4]: 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 5 procedures, 63 locations, 1 error locations. Result: SAFE, OverallTime: 4.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 104 SDtfs, 134 SDslu, 108 SDs, 0 SdLazy, 97 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred 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, 8 MinimizatonAttempts, 17 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 5183 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...