./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe016_tso.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_tso.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 70bb90fa0308883bebb2300d1d33f198a55ea50c .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:29:00,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 18:29:00,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 18:29:00,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 18:29:00,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 18:29:00,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 18:29:00,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 18:29:00,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 18:29:00,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 18:29:00,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 18:29:00,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 18:29:00,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 18:29:00,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 18:29:00,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 18:29:00,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 18:29:00,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 18:29:00,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 18:29:00,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 18:29:00,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 18:29:00,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 18:29:00,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 18:29:00,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 18:29:00,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 18:29:00,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 18:29:00,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 18:29:00,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 18:29:00,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 18:29:00,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 18:29:00,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 18:29:00,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 18:29:00,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 18:29:00,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 18:29:00,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 18:29:00,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 18:29:00,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 18:29:00,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 18:29:00,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 18:29:00,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 18:29:00,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 18:29:00,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 18:29:00,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 18:29:00,500 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 18:29:00,515 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 18:29:00,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 18:29:00,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 18:29:00,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 18:29:00,518 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 18:29:00,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 18:29:00,519 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 18:29:00,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 18:29:00,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 18:29:00,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 18:29:00,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 18:29:00,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 18:29:00,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 18:29:00,520 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 18:29:00,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 18:29:00,522 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 18:29:00,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 18:29:00,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 18:29:00,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 18:29:00,523 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 18:29:00,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 18:29:00,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 18:29:00,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 18:29:00,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 18:29:00,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 18:29:00,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 18:29:00,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 18:29:00,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 18:29:00,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 18:29:00,525 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 -> 70bb90fa0308883bebb2300d1d33f198a55ea50c [2019-11-28 18:29:00,901 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 18:29:00,917 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 18:29:00,922 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 18:29:00,924 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 18:29:00,924 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 18:29:00,925 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_tso.oepc.i [2019-11-28 18:29:00,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e613914b7/4bcca0b371314fb4809e150751f1be41/FLAG8067345e5 [2019-11-28 18:29:01,478 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 18:29:01,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_tso.oepc.i [2019-11-28 18:29:01,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e613914b7/4bcca0b371314fb4809e150751f1be41/FLAG8067345e5 [2019-11-28 18:29:01,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e613914b7/4bcca0b371314fb4809e150751f1be41 [2019-11-28 18:29:01,746 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 18:29:01,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 18:29:01,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 18:29:01,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 18:29:01,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 18:29:01,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:29:01" (1/1) ... [2019-11-28 18:29:01,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b9b6f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:01, skipping insertion in model container [2019-11-28 18:29:01,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:29:01" (1/1) ... [2019-11-28 18:29:01,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 18:29:01,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 18:29:02,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:29:02,279 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 18:29:02,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:29:02,447 INFO L208 MainTranslator]: Completed translation [2019-11-28 18:29:02,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:02 WrapperNode [2019-11-28 18:29:02,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 18:29:02,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 18:29:02,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 18:29:02,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 18:29:02,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:02" (1/1) ... [2019-11-28 18:29:02,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:02" (1/1) ... [2019-11-28 18:29:02,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 18:29:02,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 18:29:02,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 18:29:02,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 18:29:02,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:02" (1/1) ... [2019-11-28 18:29:02,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:02" (1/1) ... [2019-11-28 18:29:02,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:02" (1/1) ... [2019-11-28 18:29:02,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:02" (1/1) ... [2019-11-28 18:29:02,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:02" (1/1) ... [2019-11-28 18:29:02,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:02" (1/1) ... [2019-11-28 18:29:02,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:02" (1/1) ... [2019-11-28 18:29:02,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 18:29:02,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 18:29:02,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 18:29:02,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 18:29:02,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:02" (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 18:29:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 18:29:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-28 18:29:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 18:29:02,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 18:29:02,666 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-28 18:29:02,666 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-28 18:29:02,666 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-28 18:29:02,666 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-28 18:29:02,666 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-28 18:29:02,667 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-28 18:29:02,667 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-11-28 18:29:02,667 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-11-28 18:29:02,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-28 18:29:02,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 18:29:02,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 18:29:02,669 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 18:29:03,038 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 18:29:03,038 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 18:29:03,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:29:03 BoogieIcfgContainer [2019-11-28 18:29:03,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 18:29:03,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 18:29:03,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 18:29:03,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 18:29:03,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:29:01" (1/3) ... [2019-11-28 18:29:03,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:29:03, skipping insertion in model container [2019-11-28 18:29:03,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:02" (2/3) ... [2019-11-28 18:29:03,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:29:03, skipping insertion in model container [2019-11-28 18:29:03,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:29:03" (3/3) ... [2019-11-28 18:29:03,047 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2019-11-28 18:29:03,055 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-28 18:29:03,055 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 18:29:03,062 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 18:29:03,063 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-11-28 18:29:03,097 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,098 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,098 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,099 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,099 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,099 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,100 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,100 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,100 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,101 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,101 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,101 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,102 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,103 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,103 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,103 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,104 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,105 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,107 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,107 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,107 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,108 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,108 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,108 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:03,147 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-28 18:29:03,169 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 18:29:03,169 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 18:29:03,170 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 18:29:03,170 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 18:29:03,170 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 18:29:03,171 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 18:29:03,171 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 18:29:03,172 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 18:29:03,188 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 63 transitions [2019-11-28 18:29:03,190 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 75 places, 63 transitions [2019-11-28 18:29:03,255 INFO L134 PetriNetUnfolder]: 1/59 cut-off events. [2019-11-28 18:29:03,255 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:29:03,261 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 18:29:03,265 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 75 places, 63 transitions [2019-11-28 18:29:03,283 INFO L134 PetriNetUnfolder]: 1/59 cut-off events. [2019-11-28 18:29:03,283 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:29:03,285 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 18:29:03,288 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 732 [2019-11-28 18:29:03,289 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-11-28 18:29:04,851 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-11-28 18:29:05,014 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2019-11-28 18:29:05,132 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2019-11-28 18:29:05,300 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-11-28 18:29:05,390 INFO L206 etLargeBlockEncoding]: Checked pairs total: 749 [2019-11-28 18:29:05,391 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2019-11-28 18:29:05,395 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 19 transitions [2019-11-28 18:29:05,412 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 94 states. [2019-11-28 18:29:05,415 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2019-11-28 18:29:05,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 18:29:05,423 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:05,424 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:05,424 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:05,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:05,431 INFO L82 PathProgramCache]: Analyzing trace with hash 364087523, now seen corresponding path program 1 times [2019-11-28 18:29:05,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:05,441 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587434232] [2019-11-28 18:29:05,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:05,806 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 18:29:05,808 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587434232] [2019-11-28 18:29:05,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:05,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 18:29:05,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888256737] [2019-11-28 18:29:05,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 18:29:05,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:05,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 18:29:05,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 18:29:05,835 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2019-11-28 18:29:05,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:05,889 INFO L93 Difference]: Finished difference Result 137 states and 310 transitions. [2019-11-28 18:29:05,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 18:29:05,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-28 18:29:05,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:05,913 INFO L225 Difference]: With dead ends: 137 [2019-11-28 18:29:05,913 INFO L226 Difference]: Without dead ends: 103 [2019-11-28 18:29:05,915 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 18:29:05,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-28 18:29:05,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 94. [2019-11-28 18:29:05,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-11-28 18:29:05,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 206 transitions. [2019-11-28 18:29:05,966 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 206 transitions. Word has length 10 [2019-11-28 18:29:05,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:05,967 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 206 transitions. [2019-11-28 18:29:05,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 18:29:05,967 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 206 transitions. [2019-11-28 18:29:05,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 18:29:05,969 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:05,969 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:05,969 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:05,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:05,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1598188831, now seen corresponding path program 1 times [2019-11-28 18:29:05,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:05,970 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889244662] [2019-11-28 18:29:05,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:06,089 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 18:29:06,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889244662] [2019-11-28 18:29:06,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:06,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:29:06,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439888722] [2019-11-28 18:29:06,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:29:06,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:06,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:29:06,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:29:06,094 INFO L87 Difference]: Start difference. First operand 94 states and 206 transitions. Second operand 4 states. [2019-11-28 18:29:06,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:06,125 INFO L93 Difference]: Finished difference Result 91 states and 189 transitions. [2019-11-28 18:29:06,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:29:06,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 18:29:06,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:06,128 INFO L225 Difference]: With dead ends: 91 [2019-11-28 18:29:06,129 INFO L226 Difference]: Without dead ends: 87 [2019-11-28 18:29:06,130 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 18:29:06,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-11-28 18:29:06,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 78. [2019-11-28 18:29:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-11-28 18:29:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 163 transitions. [2019-11-28 18:29:06,141 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 163 transitions. Word has length 11 [2019-11-28 18:29:06,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:06,142 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 163 transitions. [2019-11-28 18:29:06,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:29:06,142 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 163 transitions. [2019-11-28 18:29:06,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 18:29:06,144 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:06,144 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:06,144 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:06,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:06,145 INFO L82 PathProgramCache]: Analyzing trace with hash 925343788, now seen corresponding path program 1 times [2019-11-28 18:29:06,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:06,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868512082] [2019-11-28 18:29:06,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:06,321 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 18:29:06,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868512082] [2019-11-28 18:29:06,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:06,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 18:29:06,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503408753] [2019-11-28 18:29:06,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 18:29:06,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:06,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 18:29:06,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 18:29:06,324 INFO L87 Difference]: Start difference. First operand 78 states and 163 transitions. Second operand 6 states. [2019-11-28 18:29:06,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:06,401 INFO L93 Difference]: Finished difference Result 82 states and 161 transitions. [2019-11-28 18:29:06,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 18:29:06,402 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-28 18:29:06,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:06,403 INFO L225 Difference]: With dead ends: 82 [2019-11-28 18:29:06,403 INFO L226 Difference]: Without dead ends: 64 [2019-11-28 18:29:06,403 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 18:29:06,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-28 18:29:06,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2019-11-28 18:29:06,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-28 18:29:06,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 109 transitions. [2019-11-28 18:29:06,409 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 109 transitions. Word has length 12 [2019-11-28 18:29:06,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:06,410 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 109 transitions. [2019-11-28 18:29:06,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 18:29:06,410 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 109 transitions. [2019-11-28 18:29:06,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 18:29:06,411 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:06,411 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:06,411 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:06,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:06,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1348878632, now seen corresponding path program 1 times [2019-11-28 18:29:06,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:06,414 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146932342] [2019-11-28 18:29:06,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:06,551 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 18:29:06,552 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146932342] [2019-11-28 18:29:06,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:06,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 18:29:06,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951473464] [2019-11-28 18:29:06,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 18:29:06,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:06,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 18:29:06,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-28 18:29:06,555 INFO L87 Difference]: Start difference. First operand 58 states and 109 transitions. Second operand 7 states. [2019-11-28 18:29:06,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:06,663 INFO L93 Difference]: Finished difference Result 56 states and 103 transitions. [2019-11-28 18:29:06,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 18:29:06,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-11-28 18:29:06,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:06,665 INFO L225 Difference]: With dead ends: 56 [2019-11-28 18:29:06,665 INFO L226 Difference]: Without dead ends: 49 [2019-11-28 18:29:06,665 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 18:29:06,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-28 18:29:06,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2019-11-28 18:29:06,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-28 18:29:06,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 88 transitions. [2019-11-28 18:29:06,671 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 88 transitions. Word has length 13 [2019-11-28 18:29:06,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:06,671 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 88 transitions. [2019-11-28 18:29:06,671 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 18:29:06,671 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 88 transitions. [2019-11-28 18:29:06,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:29:06,672 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:06,672 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:06,672 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:06,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:06,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1134517083, now seen corresponding path program 1 times [2019-11-28 18:29:06,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:06,673 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269836449] [2019-11-28 18:29:06,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:06,739 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 18:29:06,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269836449] [2019-11-28 18:29:06,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:06,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:29:06,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214318077] [2019-11-28 18:29:06,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:29:06,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:06,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:29:06,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:29:06,741 INFO L87 Difference]: Start difference. First operand 45 states and 88 transitions. Second operand 5 states. [2019-11-28 18:29:06,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:06,775 INFO L93 Difference]: Finished difference Result 59 states and 104 transitions. [2019-11-28 18:29:06,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:29:06,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-28 18:29:06,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:06,776 INFO L225 Difference]: With dead ends: 59 [2019-11-28 18:29:06,776 INFO L226 Difference]: Without dead ends: 37 [2019-11-28 18:29:06,777 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 18:29:06,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-28 18:29:06,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2019-11-28 18:29:06,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-28 18:29:06,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 54 transitions. [2019-11-28 18:29:06,781 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 54 transitions. Word has length 14 [2019-11-28 18:29:06,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:06,781 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 54 transitions. [2019-11-28 18:29:06,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:29:06,781 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 54 transitions. [2019-11-28 18:29:06,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:29:06,782 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:06,782 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:06,782 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:06,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:06,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1937154369, now seen corresponding path program 2 times [2019-11-28 18:29:06,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:06,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057146469] [2019-11-28 18:29:06,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:06,880 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 18:29:06,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057146469] [2019-11-28 18:29:06,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:06,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:29:06,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243493662] [2019-11-28 18:29:06,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:29:06,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:06,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:29:06,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:29:06,884 INFO L87 Difference]: Start difference. First operand 33 states and 54 transitions. Second operand 5 states. [2019-11-28 18:29:06,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:06,912 INFO L93 Difference]: Finished difference Result 42 states and 64 transitions. [2019-11-28 18:29:06,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:29:06,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-28 18:29:06,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:06,914 INFO L225 Difference]: With dead ends: 42 [2019-11-28 18:29:06,914 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 18:29:06,914 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 18:29:06,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 18:29:06,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-28 18:29:06,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 18:29:06,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2019-11-28 18:29:06,922 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 14 [2019-11-28 18:29:06,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:06,923 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-11-28 18:29:06,923 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:29:06,923 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2019-11-28 18:29:06,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:29:06,923 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:06,926 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:06,926 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:06,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:06,926 INFO L82 PathProgramCache]: Analyzing trace with hash 562302313, now seen corresponding path program 3 times [2019-11-28 18:29:06,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:06,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860615242] [2019-11-28 18:29:06,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:07,002 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 18:29:07,003 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860615242] [2019-11-28 18:29:07,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:07,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:29:07,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229560000] [2019-11-28 18:29:07,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:29:07,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:07,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:29:07,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:29:07,004 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand 4 states. [2019-11-28 18:29:07,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:07,024 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2019-11-28 18:29:07,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:29:07,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 18:29:07,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:07,025 INFO L225 Difference]: With dead ends: 28 [2019-11-28 18:29:07,025 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 18:29:07,026 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 18:29:07,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 18:29:07,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-28 18:29:07,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 18:29:07,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2019-11-28 18:29:07,028 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 14 [2019-11-28 18:29:07,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:07,031 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-11-28 18:29:07,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:29:07,031 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2019-11-28 18:29:07,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:29:07,031 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:07,031 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:07,033 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:07,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:07,035 INFO L82 PathProgramCache]: Analyzing trace with hash 586461853, now seen corresponding path program 4 times [2019-11-28 18:29:07,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:07,036 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655483764] [2019-11-28 18:29:07,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:07,106 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 18:29:07,106 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655483764] [2019-11-28 18:29:07,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:07,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:29:07,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416510694] [2019-11-28 18:29:07,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:29:07,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:07,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:29:07,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:29:07,108 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand 4 states. [2019-11-28 18:29:07,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:07,121 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2019-11-28 18:29:07,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:29:07,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 18:29:07,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:07,122 INFO L225 Difference]: With dead ends: 22 [2019-11-28 18:29:07,122 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 18:29:07,123 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 18:29:07,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 18:29:07,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 18:29:07,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 18:29:07,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 18:29:07,124 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-11-28 18:29:07,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:07,124 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 18:29:07,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:29:07,125 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 18:29:07,125 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 18:29:07,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:29:07 BasicIcfg [2019-11-28 18:29:07,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 18:29:07,136 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 18:29:07,136 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 18:29:07,136 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 18:29:07,137 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:29:03" (3/4) ... [2019-11-28 18:29:07,142 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 18:29:07,150 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-28 18:29:07,150 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-28 18:29:07,150 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-28 18:29:07,153 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-11-28 18:29:07,164 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-28 18:29:07,164 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 18:29:07,164 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 18:29:07,217 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 18:29:07,217 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 18:29:07,219 INFO L168 Benchmark]: Toolchain (without parser) took 5471.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 204.5 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -96.0 MB). Peak memory consumption was 108.5 MB. Max. memory is 11.5 GB. [2019-11-28 18:29:07,219 INFO L168 Benchmark]: CDTParser took 1.45 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 18:29:07,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -131.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-28 18:29:07,221 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.88 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 18:29:07,221 INFO L168 Benchmark]: Boogie Preprocessor took 49.74 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 18:29:07,222 INFO L168 Benchmark]: RCFGBuilder took 456.62 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: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2019-11-28 18:29:07,222 INFO L168 Benchmark]: TraceAbstraction took 4095.10 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 74.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -4.2 MB). Peak memory consumption was 70.2 MB. Max. memory is 11.5 GB. [2019-11-28 18:29:07,223 INFO L168 Benchmark]: Witness Printer took 81.46 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: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 11.5 GB. [2019-11-28 18:29:07,227 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.45 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 699.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -131.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 80.88 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 49.74 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. * RCFGBuilder took 456.62 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: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4095.10 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 74.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -4.2 MB). Peak memory consumption was 70.2 MB. Max. memory is 11.5 GB. * Witness Printer took 81.46 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: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.2s, 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: 0.2s, 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: 3.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 144 SDslu, 108 SDs, 0 SdLazy, 96 SolverSat, 73 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, 32 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 5477 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...