./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe000_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/safe000_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 df496559a91a2db4243d0588658a413b8c876321 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:24:47,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 18:24:47,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 18:24:47,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 18:24:47,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 18:24:47,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 18:24:47,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 18:24:47,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 18:24:47,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 18:24:47,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 18:24:47,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 18:24:47,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 18:24:47,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 18:24:47,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 18:24:47,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 18:24:47,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 18:24:47,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 18:24:47,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 18:24:47,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 18:24:47,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 18:24:47,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 18:24:47,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 18:24:47,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 18:24:47,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 18:24:47,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 18:24:47,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 18:24:47,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 18:24:47,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 18:24:47,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 18:24:47,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 18:24:47,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 18:24:47,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 18:24:47,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 18:24:47,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 18:24:47,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 18:24:47,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 18:24:47,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 18:24:47,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 18:24:47,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 18:24:47,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 18:24:47,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 18:24:47,726 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 18:24:47,762 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 18:24:47,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 18:24:47,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 18:24:47,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 18:24:47,767 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 18:24:47,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 18:24:47,770 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 18:24:47,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 18:24:47,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 18:24:47,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 18:24:47,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 18:24:47,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 18:24:47,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 18:24:47,773 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 18:24:47,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 18:24:47,775 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 18:24:47,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 18:24:47,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 18:24:47,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 18:24:47,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 18:24:47,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 18:24:47,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 18:24:47,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 18:24:47,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 18:24:47,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 18:24:47,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 18:24:47,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 18:24:47,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 18:24:47,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 18:24:47,780 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 -> df496559a91a2db4243d0588658a413b8c876321 [2019-11-28 18:24:48,135 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 18:24:48,157 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 18:24:48,161 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 18:24:48,163 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 18:24:48,165 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 18:24:48,165 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe000_pso.opt.i [2019-11-28 18:24:48,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fb9653c9/2881b3286ee04e329708342df122832e/FLAGa4d1ee8c0 [2019-11-28 18:24:48,901 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 18:24:48,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_pso.opt.i [2019-11-28 18:24:48,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fb9653c9/2881b3286ee04e329708342df122832e/FLAGa4d1ee8c0 [2019-11-28 18:24:49,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fb9653c9/2881b3286ee04e329708342df122832e [2019-11-28 18:24:49,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 18:24:49,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 18:24:49,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 18:24:49,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 18:24:49,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 18:24:49,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:24:49" (1/1) ... [2019-11-28 18:24:49,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@778b5d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:49, skipping insertion in model container [2019-11-28 18:24:49,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:24:49" (1/1) ... [2019-11-28 18:24:49,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 18:24:49,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 18:24:49,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:24:49,683 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 18:24:49,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:24:49,852 INFO L208 MainTranslator]: Completed translation [2019-11-28 18:24:49,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:49 WrapperNode [2019-11-28 18:24:49,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 18:24:49,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 18:24:49,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 18:24:49,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 18:24:49,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:49" (1/1) ... [2019-11-28 18:24:49,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:49" (1/1) ... [2019-11-28 18:24:49,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 18:24:49,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 18:24:49,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 18:24:49,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 18:24:49,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:49" (1/1) ... [2019-11-28 18:24:49,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:49" (1/1) ... [2019-11-28 18:24:49,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:49" (1/1) ... [2019-11-28 18:24:49,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:49" (1/1) ... [2019-11-28 18:24:49,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:49" (1/1) ... [2019-11-28 18:24:49,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:49" (1/1) ... [2019-11-28 18:24:49,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:49" (1/1) ... [2019-11-28 18:24:49,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 18:24:49,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 18:24:49,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 18:24:49,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 18:24:49,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:49" (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 18:24:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 18:24:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-28 18:24:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 18:24:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 18:24:50,030 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-28 18:24:50,030 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-28 18:24:50,030 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-28 18:24:50,030 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-28 18:24:50,030 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-28 18:24:50,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-28 18:24:50,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-28 18:24:50,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 18:24:50,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 18:24:50,032 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 18:24:50,412 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 18:24:50,413 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 18:24:50,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:24:50 BoogieIcfgContainer [2019-11-28 18:24:50,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 18:24:50,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 18:24:50,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 18:24:50,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 18:24:50,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:24:49" (1/3) ... [2019-11-28 18:24:50,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de69ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:24:50, skipping insertion in model container [2019-11-28 18:24:50,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:24:49" (2/3) ... [2019-11-28 18:24:50,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de69ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:24:50, skipping insertion in model container [2019-11-28 18:24:50,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:24:50" (3/3) ... [2019-11-28 18:24:50,424 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_pso.opt.i [2019-11-28 18:24:50,433 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-28 18:24:50,433 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 18:24:50,441 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 18:24:50,442 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-11-28 18:24:50,470 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:50,470 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:50,471 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:50,471 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:50,472 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:50,472 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:50,472 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:50,472 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:50,473 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:50,473 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:50,473 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:50,474 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:50,474 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:50,474 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:50,475 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:50,475 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:50,475 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:50,475 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:24:50,503 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 18:24:50,522 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 18:24:50,522 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 18:24:50,522 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 18:24:50,522 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 18:24:50,522 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 18:24:50,522 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 18:24:50,522 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 18:24:50,523 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 18:24:50,535 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-11-28 18:24:50,537 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-11-28 18:24:50,581 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-11-28 18:24:50,582 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:24:50,590 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-11-28 18:24:50,595 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-11-28 18:24:50,614 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-11-28 18:24:50,615 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:24:50,617 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-11-28 18:24:50,619 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-11-28 18:24:50,621 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-11-28 18:24:52,014 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-11-28 18:24:52,126 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-11-28 18:24:52,246 INFO L206 etLargeBlockEncoding]: Checked pairs total: 478 [2019-11-28 18:24:52,248 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2019-11-28 18:24:52,252 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-11-28 18:24:52,278 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-11-28 18:24:52,281 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-11-28 18:24:52,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 18:24:52,294 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:24:52,295 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:24:52,296 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:24:52,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:24:52,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1804038140, now seen corresponding path program 1 times [2019-11-28 18:24:52,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:24:52,323 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035098419] [2019-11-28 18:24:52,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:24:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:24:52,701 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 18:24:52,702 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035098419] [2019-11-28 18:24:52,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:24:52,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:24:52,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722833769] [2019-11-28 18:24:52,710 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:24:52,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:24:52,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:24:52,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:24:52,730 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2019-11-28 18:24:52,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:24:52,795 INFO L93 Difference]: Finished difference Result 58 states and 113 transitions. [2019-11-28 18:24:52,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:24:52,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-28 18:24:52,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:24:52,810 INFO L225 Difference]: With dead ends: 58 [2019-11-28 18:24:52,810 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 18:24:52,812 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:24:52,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 18:24:52,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-28 18:24:52,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 18:24:52,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-11-28 18:24:52,853 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-11-28 18:24:52,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:24:52,854 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-11-28 18:24:52,854 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:24:52,854 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-11-28 18:24:52,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 18:24:52,855 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:24:52,856 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:24:52,856 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:24:52,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:24:52,856 INFO L82 PathProgramCache]: Analyzing trace with hash 982750768, now seen corresponding path program 1 times [2019-11-28 18:24:52,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:24:52,857 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590189154] [2019-11-28 18:24:52,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:24:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:24:52,996 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 18:24:52,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590189154] [2019-11-28 18:24:52,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:24:52,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:24:53,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742670540] [2019-11-28 18:24:53,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:24:53,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:24:53,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:24:53,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:24:53,003 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 4 states. [2019-11-28 18:24:53,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:24:53,022 INFO L93 Difference]: Finished difference Result 39 states and 65 transitions. [2019-11-28 18:24:53,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:24:53,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-28 18:24:53,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:24:53,024 INFO L225 Difference]: With dead ends: 39 [2019-11-28 18:24:53,024 INFO L226 Difference]: Without dead ends: 37 [2019-11-28 18:24:53,025 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 18:24:53,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-28 18:24:53,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-11-28 18:24:53,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-28 18:24:53,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 61 transitions. [2019-11-28 18:24:53,032 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 61 transitions. Word has length 9 [2019-11-28 18:24:53,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:24:53,032 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 61 transitions. [2019-11-28 18:24:53,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:24:53,033 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 61 transitions. [2019-11-28 18:24:53,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 18:24:53,034 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:24:53,034 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:24:53,034 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:24:53,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:24:53,035 INFO L82 PathProgramCache]: Analyzing trace with hash 90665039, now seen corresponding path program 1 times [2019-11-28 18:24:53,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:24:53,035 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231407247] [2019-11-28 18:24:53,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:24:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:24:53,162 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 18:24:53,162 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231407247] [2019-11-28 18:24:53,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:24:53,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:24:53,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076219841] [2019-11-28 18:24:53,165 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:24:53,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:24:53,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:24:53,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:24:53,166 INFO L87 Difference]: Start difference. First operand 35 states and 61 transitions. Second operand 4 states. [2019-11-28 18:24:53,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:24:53,192 INFO L93 Difference]: Finished difference Result 41 states and 64 transitions. [2019-11-28 18:24:53,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:24:53,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-28 18:24:53,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:24:53,194 INFO L225 Difference]: With dead ends: 41 [2019-11-28 18:24:53,194 INFO L226 Difference]: Without dead ends: 39 [2019-11-28 18:24:53,194 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 18:24:53,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-28 18:24:53,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2019-11-28 18:24:53,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 18:24:53,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 56 transitions. [2019-11-28 18:24:53,200 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 56 transitions. Word has length 9 [2019-11-28 18:24:53,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:24:53,201 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 56 transitions. [2019-11-28 18:24:53,201 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:24:53,201 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 56 transitions. [2019-11-28 18:24:53,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 18:24:53,202 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:24:53,202 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:24:53,203 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:24:53,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:24:53,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1542654109, now seen corresponding path program 1 times [2019-11-28 18:24:53,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:24:53,204 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750614218] [2019-11-28 18:24:53,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:24:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:24:53,318 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 18:24:53,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750614218] [2019-11-28 18:24:53,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:24:53,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:24:53,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551725942] [2019-11-28 18:24:53,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:24:53,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:24:53,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:24:53,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:24:53,322 INFO L87 Difference]: Start difference. First operand 34 states and 56 transitions. Second operand 5 states. [2019-11-28 18:24:53,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:24:53,352 INFO L93 Difference]: Finished difference Result 38 states and 58 transitions. [2019-11-28 18:24:53,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:24:53,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-28 18:24:53,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:24:53,353 INFO L225 Difference]: With dead ends: 38 [2019-11-28 18:24:53,353 INFO L226 Difference]: Without dead ends: 20 [2019-11-28 18:24:53,354 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 18:24:53,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-28 18:24:53,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-28 18:24:53,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 18:24:53,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2019-11-28 18:24:53,357 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 10 [2019-11-28 18:24:53,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:24:53,358 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 27 transitions. [2019-11-28 18:24:53,358 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:24:53,358 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2019-11-28 18:24:53,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 18:24:53,358 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:24:53,359 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:24:53,359 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:24:53,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:24:53,359 INFO L82 PathProgramCache]: Analyzing trace with hash -525836137, now seen corresponding path program 1 times [2019-11-28 18:24:53,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:24:53,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655889358] [2019-11-28 18:24:53,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:24:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:24:53,422 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 18:24:53,423 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655889358] [2019-11-28 18:24:53,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:24:53,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:24:53,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083794803] [2019-11-28 18:24:53,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:24:53,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:24:53,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:24:53,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:24:53,426 INFO L87 Difference]: Start difference. First operand 20 states and 27 transitions. Second operand 4 states. [2019-11-28 18:24:53,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:24:53,451 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2019-11-28 18:24:53,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:24:53,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 18:24:53,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:24:53,452 INFO L225 Difference]: With dead ends: 19 [2019-11-28 18:24:53,452 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 18:24:53,453 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:24:53,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 18:24:53,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 18:24:53,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 18:24:53,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 18:24:53,456 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-28 18:24:53,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:24:53,457 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 18:24:53,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:24:53,457 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 18:24:53,457 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 18:24:53,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:24:53 BasicIcfg [2019-11-28 18:24:53,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 18:24:53,462 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 18:24:53,467 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 18:24:53,467 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 18:24:53,467 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:24:50" (3/4) ... [2019-11-28 18:24:53,473 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 18:24:53,480 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-28 18:24:53,480 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-28 18:24:53,480 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-28 18:24:53,488 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-28 18:24:53,489 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 18:24:53,489 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 18:24:53,553 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 18:24:53,553 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 18:24:53,557 INFO L168 Benchmark]: Toolchain (without parser) took 4447.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 960.4 MB in the beginning and 799.1 MB in the end (delta: 161.3 MB). Peak memory consumption was 287.1 MB. Max. memory is 11.5 GB. [2019-11-28 18:24:53,558 INFO L168 Benchmark]: CDTParser took 0.95 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 18:24:53,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 743.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -132.4 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2019-11-28 18:24:53,564 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.40 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 18:24:53,564 INFO L168 Benchmark]: Boogie Preprocessor took 40.75 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 18:24:53,565 INFO L168 Benchmark]: RCFGBuilder took 451.54 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2019-11-28 18:24:53,570 INFO L168 Benchmark]: TraceAbstraction took 3044.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 805.9 MB in the end (delta: 261.8 MB). Peak memory consumption was 261.8 MB. Max. memory is 11.5 GB. [2019-11-28 18:24:53,570 INFO L168 Benchmark]: Witness Printer took 93.34 ms. Allocated memory is still 1.2 GB. Free memory was 805.9 MB in the beginning and 799.1 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 18:24:53,575 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95 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 743.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -132.4 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 67.40 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 40.75 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 451.54 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3044.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 805.9 MB in the end (delta: 261.8 MB). Peak memory consumption was 261.8 MB. Max. memory is 11.5 GB. * Witness Printer took 93.34 ms. Allocated memory is still 1.2 GB. Free memory was 805.9 MB in the beginning and 799.1 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 63 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 232 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 13 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 478 CheckedPairsTotal, 47 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, 54 locations, 1 error locations. Result: SAFE, OverallTime: 2.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 54 SDslu, 36 SDs, 0 SdLazy, 39 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 2166 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...