./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe015_pso.opt.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/safe015_pso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b3072994703d5ce5162562d4f2c85a4160bb68b .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:28:44,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 18:28:44,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 18:28:44,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 18:28:44,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 18:28:44,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 18:28:44,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 18:28:44,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 18:28:44,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 18:28:44,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 18:28:44,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 18:28:44,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 18:28:44,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 18:28:44,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 18:28:44,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 18:28:44,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 18:28:44,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 18:28:44,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 18:28:44,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 18:28:44,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 18:28:44,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 18:28:44,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 18:28:44,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 18:28:44,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 18:28:44,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 18:28:44,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 18:28:44,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 18:28:44,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 18:28:44,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 18:28:44,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 18:28:44,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 18:28:44,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 18:28:44,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 18:28:44,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 18:28:44,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 18:28:44,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 18:28:44,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 18:28:44,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 18:28:44,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 18:28:44,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 18:28:44,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 18:28:44,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 18:28:44,572 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 18:28:44,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 18:28:44,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 18:28:44,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 18:28:44,574 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 18:28:44,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 18:28:44,575 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 18:28:44,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 18:28:44,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 18:28:44,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 18:28:44,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 18:28:44,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 18:28:44,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 18:28:44,577 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 18:28:44,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 18:28:44,577 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 18:28:44,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 18:28:44,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 18:28:44,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 18:28:44,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 18:28:44,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 18:28:44,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 18:28:44,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 18:28:44,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 18:28:44,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 18:28:44,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 18:28:44,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 18:28:44,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 18:28:44,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 18:28:44,581 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 -> 1b3072994703d5ce5162562d4f2c85a4160bb68b [2019-11-28 18:28:44,890 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 18:28:44,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 18:28:44,908 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 18:28:44,910 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 18:28:44,911 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 18:28:44,912 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i [2019-11-28 18:28:44,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c029c9e21/6f84c098ba1e46d0ae8ad37e07fc5dec/FLAGbd9597478 [2019-11-28 18:28:45,560 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 18:28:45,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i [2019-11-28 18:28:45,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c029c9e21/6f84c098ba1e46d0ae8ad37e07fc5dec/FLAGbd9597478 [2019-11-28 18:28:45,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c029c9e21/6f84c098ba1e46d0ae8ad37e07fc5dec [2019-11-28 18:28:45,904 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 18:28:45,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 18:28:45,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 18:28:45,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 18:28:45,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 18:28:45,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:28:45" (1/1) ... [2019-11-28 18:28:45,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58705288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:45, skipping insertion in model container [2019-11-28 18:28:45,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:28:45" (1/1) ... [2019-11-28 18:28:45,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 18:28:45,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 18:28:46,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:28:46,438 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 18:28:46,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:28:46,594 INFO L208 MainTranslator]: Completed translation [2019-11-28 18:28:46,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:46 WrapperNode [2019-11-28 18:28:46,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 18:28:46,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 18:28:46,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 18:28:46,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 18:28:46,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:46" (1/1) ... [2019-11-28 18:28:46,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:46" (1/1) ... [2019-11-28 18:28:46,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 18:28:46,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 18:28:46,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 18:28:46,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 18:28:46,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:46" (1/1) ... [2019-11-28 18:28:46,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:46" (1/1) ... [2019-11-28 18:28:46,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:46" (1/1) ... [2019-11-28 18:28:46,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:46" (1/1) ... [2019-11-28 18:28:46,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:46" (1/1) ... [2019-11-28 18:28:46,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:46" (1/1) ... [2019-11-28 18:28:46,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:46" (1/1) ... [2019-11-28 18:28:46,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 18:28:46,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 18:28:46,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 18:28:46,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 18:28:46,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:46" (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 18:28:46,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 18:28:46,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-28 18:28:46,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 18:28:46,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 18:28:46,739 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-28 18:28:46,740 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-28 18:28:46,740 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-28 18:28:46,740 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-28 18:28:46,740 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-28 18:28:46,741 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-28 18:28:46,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-28 18:28:46,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 18:28:46,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 18:28:46,743 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 18:28:47,106 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 18:28:47,107 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 18:28:47,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:28:47 BoogieIcfgContainer [2019-11-28 18:28:47,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 18:28:47,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 18:28:47,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 18:28:47,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 18:28:47,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:28:45" (1/3) ... [2019-11-28 18:28:47,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3735613a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:28:47, skipping insertion in model container [2019-11-28 18:28:47,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:46" (2/3) ... [2019-11-28 18:28:47,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3735613a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:28:47, skipping insertion in model container [2019-11-28 18:28:47,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:28:47" (3/3) ... [2019-11-28 18:28:47,116 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2019-11-28 18:28:47,125 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-28 18:28:47,125 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 18:28:47,132 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 18:28:47,133 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-11-28 18:28:47,156 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:47,156 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:47,156 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:47,157 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:47,157 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:47,157 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:47,158 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:47,158 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:47,158 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:47,158 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:47,159 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:47,159 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:47,159 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:47,160 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:47,160 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:47,160 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:47,160 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:47,161 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:47,194 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 18:28:47,214 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 18:28:47,214 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 18:28:47,214 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 18:28:47,215 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 18:28:47,215 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 18:28:47,215 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 18:28:47,215 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 18:28:47,215 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 18:28:47,230 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 53 transitions [2019-11-28 18:28:47,232 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-11-28 18:28:47,287 INFO L134 PetriNetUnfolder]: 1/50 cut-off events. [2019-11-28 18:28:47,288 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:28:47,297 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-11-28 18:28:47,301 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-11-28 18:28:47,318 INFO L134 PetriNetUnfolder]: 1/50 cut-off events. [2019-11-28 18:28:47,319 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:28:47,319 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-11-28 18:28:47,321 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-11-28 18:28:47,322 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-11-28 18:28:48,573 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-11-28 18:28:48,979 WARN L192 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-11-28 18:28:48,995 INFO L206 etLargeBlockEncoding]: Checked pairs total: 504 [2019-11-28 18:28:48,995 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2019-11-28 18:28:48,999 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-11-28 18:28:49,013 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-11-28 18:28:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-11-28 18:28:49,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 18:28:49,022 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:28:49,023 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:28:49,024 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:28:49,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:28:49,031 INFO L82 PathProgramCache]: Analyzing trace with hash -411766657, now seen corresponding path program 1 times [2019-11-28 18:28:49,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:28:49,042 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492833569] [2019-11-28 18:28:49,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:28:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:28:49,331 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 18:28:49,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492833569] [2019-11-28 18:28:49,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:28:49,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 18:28:49,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716018107] [2019-11-28 18:28:49,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 18:28:49,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:28:49,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 18:28:49,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 18:28:49,357 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-11-28 18:28:49,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:28:49,398 INFO L93 Difference]: Finished difference Result 57 states and 102 transitions. [2019-11-28 18:28:49,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 18:28:49,399 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-28 18:28:49,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:28:49,410 INFO L225 Difference]: With dead ends: 57 [2019-11-28 18:28:49,410 INFO L226 Difference]: Without dead ends: 37 [2019-11-28 18:28:49,411 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 18:28:49,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-28 18:28:49,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2019-11-28 18:28:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 18:28:49,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 54 transitions. [2019-11-28 18:28:49,443 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 54 transitions. Word has length 8 [2019-11-28 18:28:49,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:28:49,444 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 54 transitions. [2019-11-28 18:28:49,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 18:28:49,444 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 54 transitions. [2019-11-28 18:28:49,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 18:28:49,445 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:28:49,445 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:28:49,447 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:28:49,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:28:49,447 INFO L82 PathProgramCache]: Analyzing trace with hash 116613460, now seen corresponding path program 1 times [2019-11-28 18:28:49,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:28:49,448 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363964937] [2019-11-28 18:28:49,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:28:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:28:49,550 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 18:28:49,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363964937] [2019-11-28 18:28:49,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:28:49,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:28:49,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803299196] [2019-11-28 18:28:49,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:28:49,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:28:49,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:28:49,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:28:49,554 INFO L87 Difference]: Start difference. First operand 34 states and 54 transitions. Second operand 5 states. [2019-11-28 18:28:49,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:28:49,631 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2019-11-28 18:28:49,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:28:49,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-28 18:28:49,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:28:49,634 INFO L225 Difference]: With dead ends: 37 [2019-11-28 18:28:49,634 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 18:28:49,635 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-28 18:28:49,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 18:28:49,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-28 18:28:49,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 18:28:49,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2019-11-28 18:28:49,639 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 9 [2019-11-28 18:28:49,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:28:49,639 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2019-11-28 18:28:49,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:28:49,640 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2019-11-28 18:28:49,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 18:28:49,640 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:28:49,641 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:28:49,641 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:28:49,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:28:49,641 INFO L82 PathProgramCache]: Analyzing trace with hash 934712652, now seen corresponding path program 1 times [2019-11-28 18:28:49,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:28:49,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963245232] [2019-11-28 18:28:49,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:28:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:28:49,747 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 18:28:49,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963245232] [2019-11-28 18:28:49,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:28:49,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 18:28:49,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538512052] [2019-11-28 18:28:49,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 18:28:49,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:28:49,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 18:28:49,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 18:28:49,750 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand 6 states. [2019-11-28 18:28:49,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:28:49,813 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2019-11-28 18:28:49,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 18:28:49,814 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-28 18:28:49,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:28:49,815 INFO L225 Difference]: With dead ends: 25 [2019-11-28 18:28:49,815 INFO L226 Difference]: Without dead ends: 17 [2019-11-28 18:28:49,815 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-28 18:28:49,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-28 18:28:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-28 18:28:49,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-28 18:28:49,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-28 18:28:49,819 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-11-28 18:28:49,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:28:49,819 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-28 18:28:49,819 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 18:28:49,820 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-28 18:28:49,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 18:28:49,820 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:28:49,820 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:28:49,821 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:28:49,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:28:49,838 INFO L82 PathProgramCache]: Analyzing trace with hash -977833272, now seen corresponding path program 1 times [2019-11-28 18:28:49,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:28:49,838 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53054195] [2019-11-28 18:28:49,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:28:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:28:49,975 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 18:28:49,976 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53054195] [2019-11-28 18:28:49,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:28:49,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:28:49,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493910809] [2019-11-28 18:28:49,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:28:49,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:28:49,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:28:49,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:28:49,979 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-11-28 18:28:50,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:28:50,000 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-11-28 18:28:50,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:28:50,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 18:28:50,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:28:50,002 INFO L225 Difference]: With dead ends: 20 [2019-11-28 18:28:50,002 INFO L226 Difference]: Without dead ends: 12 [2019-11-28 18:28:50,002 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 18:28:50,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-28 18:28:50,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-28 18:28:50,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 18:28:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-11-28 18:28:50,005 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2019-11-28 18:28:50,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:28:50,006 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-11-28 18:28:50,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:28:50,007 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-11-28 18:28:50,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 18:28:50,008 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:28:50,008 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:28:50,008 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:28:50,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:28:50,008 INFO L82 PathProgramCache]: Analyzing trace with hash -462405218, now seen corresponding path program 2 times [2019-11-28 18:28:50,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:28:50,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52518711] [2019-11-28 18:28:50,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:28:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:28:50,134 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 18:28:50,135 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52518711] [2019-11-28 18:28:50,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:28:50,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:28:50,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457299300] [2019-11-28 18:28:50,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:28:50,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:28:50,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:28:50,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:28:50,137 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 5 states. [2019-11-28 18:28:50,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:28:50,154 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-11-28 18:28:50,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:28:50,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 18:28:50,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:28:50,155 INFO L225 Difference]: With dead ends: 11 [2019-11-28 18:28:50,155 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 18:28:50,155 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 18:28:50,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 18:28:50,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 18:28:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 18:28:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 18:28:50,157 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-28 18:28:50,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:28:50,157 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 18:28:50,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:28:50,157 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 18:28:50,158 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 18:28:50,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:28:50 BasicIcfg [2019-11-28 18:28:50,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 18:28:50,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 18:28:50,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 18:28:50,162 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 18:28:50,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:28:47" (3/4) ... [2019-11-28 18:28:50,166 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 18:28:50,173 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-28 18:28:50,174 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-28 18:28:50,174 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-28 18:28:50,178 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-28 18:28:50,178 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 18:28:50,179 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 18:28:50,222 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 18:28:50,223 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 18:28:50,224 INFO L168 Benchmark]: Toolchain (without parser) took 4319.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 217.1 MB). Free memory was 955.0 MB in the beginning and 1.2 GB in the end (delta: -223.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:28:50,225 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:28:50,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -154.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-28 18:28:50,226 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.17 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 18:28:50,227 INFO L168 Benchmark]: Boogie Preprocessor took 27.31 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 18:28:50,228 INFO L168 Benchmark]: RCFGBuilder took 439.79 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-11-28 18:28:50,228 INFO L168 Benchmark]: TraceAbstraction took 3052.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -93.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:28:50,229 INFO L168 Benchmark]: Witness Printer took 60.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2019-11-28 18:28:50,233 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 689.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -154.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.17 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 27.31 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 439.79 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3052.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -93.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 60.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 62 ProgramPointsBefore, 21 ProgramPointsAfterwards, 53 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 246 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 18 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 504 CheckedPairsTotal, 44 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 4 procedures, 53 locations, 1 error locations. Result: SAFE, OverallTime: 2.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 55 SDslu, 31 SDs, 0 SdLazy, 46 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 2424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...