./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe018_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/safe018_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 b79dddd7d9e2c4a1dea51534d81c18928c635387 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 18:29:35,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 18:29:35,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 18:29:35,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 18:29:35,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 18:29:35,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 18:29:35,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 18:29:35,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 18:29:35,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 18:29:35,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 18:29:35,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 18:29:35,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 18:29:35,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 18:29:35,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 18:29:35,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 18:29:35,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 18:29:35,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 18:29:35,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 18:29:35,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 18:29:35,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 18:29:35,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 18:29:35,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 18:29:35,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 18:29:35,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 18:29:35,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 18:29:35,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 18:29:35,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 18:29:35,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 18:29:35,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 18:29:35,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 18:29:35,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 18:29:35,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 18:29:35,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 18:29:35,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 18:29:35,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 18:29:35,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 18:29:35,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 18:29:35,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 18:29:35,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 18:29:35,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 18:29:35,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 18:29:35,848 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 18:29:35,873 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 18:29:35,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 18:29:35,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 18:29:35,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 18:29:35,877 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 18:29:35,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 18:29:35,878 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 18:29:35,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 18:29:35,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 18:29:35,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 18:29:35,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 18:29:35,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 18:29:35,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 18:29:35,881 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 18:29:35,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 18:29:35,881 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 18:29:35,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 18:29:35,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 18:29:35,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 18:29:35,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 18:29:35,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 18:29:35,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 18:29:35,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 18:29:35,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 18:29:35,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 18:29:35,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 18:29:35,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 18:29:35,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 18:29:35,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 18:29:35,884 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 -> b79dddd7d9e2c4a1dea51534d81c18928c635387 [2019-11-28 18:29:36,181 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 18:29:36,195 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 18:29:36,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 18:29:36,199 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 18:29:36,200 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 18:29:36,201 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe018_pso.opt.i [2019-11-28 18:29:36,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d936dd9/5d073a8243084d899cc199c55152dc08/FLAG853e75326 [2019-11-28 18:29:36,771 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 18:29:36,772 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe018_pso.opt.i [2019-11-28 18:29:36,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d936dd9/5d073a8243084d899cc199c55152dc08/FLAG853e75326 [2019-11-28 18:29:37,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d936dd9/5d073a8243084d899cc199c55152dc08 [2019-11-28 18:29:37,070 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 18:29:37,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 18:29:37,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 18:29:37,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 18:29:37,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 18:29:37,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:29:37" (1/1) ... [2019-11-28 18:29:37,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6555944c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:37, skipping insertion in model container [2019-11-28 18:29:37,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:29:37" (1/1) ... [2019-11-28 18:29:37,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 18:29:37,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 18:29:37,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:29:37,755 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 18:29:37,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:29:37,925 INFO L208 MainTranslator]: Completed translation [2019-11-28 18:29:37,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:37 WrapperNode [2019-11-28 18:29:37,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 18:29:37,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 18:29:37,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 18:29:37,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 18:29:37,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:37" (1/1) ... [2019-11-28 18:29:37,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:37" (1/1) ... [2019-11-28 18:29:37,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 18:29:37,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 18:29:37,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 18:29:37,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 18:29:37,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:37" (1/1) ... [2019-11-28 18:29:37,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:37" (1/1) ... [2019-11-28 18:29:37,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:37" (1/1) ... [2019-11-28 18:29:37,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:37" (1/1) ... [2019-11-28 18:29:37,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:37" (1/1) ... [2019-11-28 18:29:37,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:37" (1/1) ... [2019-11-28 18:29:37,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:37" (1/1) ... [2019-11-28 18:29:37,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 18:29:37,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 18:29:37,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 18:29:37,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 18:29:38,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 18:29:38,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 18:29:38,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-28 18:29:38,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 18:29:38,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 18:29:38,070 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-28 18:29:38,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-28 18:29:38,071 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-28 18:29:38,071 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-28 18:29:38,071 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-28 18:29:38,071 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-28 18:29:38,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-28 18:29:38,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 18:29:38,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 18:29:38,074 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-28 18:29:38,426 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 18:29:38,426 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 18:29:38,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:29:38 BoogieIcfgContainer [2019-11-28 18:29:38,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 18:29:38,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 18:29:38,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 18:29:38,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 18:29:38,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:29:37" (1/3) ... [2019-11-28 18:29:38,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33584a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:29:38, skipping insertion in model container [2019-11-28 18:29:38,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:29:37" (2/3) ... [2019-11-28 18:29:38,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33584a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:29:38, skipping insertion in model container [2019-11-28 18:29:38,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:29:38" (3/3) ... [2019-11-28 18:29:38,437 INFO L109 eAbstractionObserver]: Analyzing ICFG safe018_pso.opt.i [2019-11-28 18:29:38,447 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-28 18:29:38,448 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 18:29:38,455 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 18:29:38,456 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-11-28 18:29:38,482 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:38,482 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:38,482 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:38,483 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:38,483 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:38,483 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:38,484 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:38,484 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:38,484 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:38,484 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:38,484 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:38,485 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:38,485 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:38,485 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:38,485 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:38,486 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:38,486 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:38,486 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:29:38,506 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 18:29:38,524 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 18:29:38,525 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 18:29:38,525 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 18:29:38,525 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 18:29:38,526 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 18:29:38,526 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 18:29:38,526 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 18:29:38,526 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 18:29:38,541 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-11-28 18:29:38,543 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-11-28 18:29:38,600 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-11-28 18:29:38,600 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:29:38,607 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 24 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-11-28 18:29:38,609 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-11-28 18:29:38,626 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-11-28 18:29:38,626 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:29:38,627 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 24 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-11-28 18:29:38,629 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-11-28 18:29:38,630 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-11-28 18:29:39,870 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-11-28 18:29:40,027 INFO L206 etLargeBlockEncoding]: Checked pairs total: 482 [2019-11-28 18:29:40,027 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-11-28 18:29:40,032 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-11-28 18:29:40,047 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-11-28 18:29:40,049 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-11-28 18:29:40,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 18:29:40,061 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:40,062 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:40,063 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:40,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:40,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1824698528, now seen corresponding path program 1 times [2019-11-28 18:29:40,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:40,077 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564712914] [2019-11-28 18:29:40,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:40,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:29:40,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564712914] [2019-11-28 18:29:40,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:40,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 18:29:40,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282147018] [2019-11-28 18:29:40,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 18:29:40,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:40,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 18:29:40,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 18:29:40,435 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-11-28 18:29:40,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:40,472 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2019-11-28 18:29:40,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 18:29:40,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-28 18:29:40,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:40,500 INFO L225 Difference]: With dead ends: 50 [2019-11-28 18:29:40,504 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 18:29:40,507 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 18:29:40,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 18:29:40,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-28 18:29:40,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 18:29:40,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 69 transitions. [2019-11-28 18:29:40,544 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 69 transitions. Word has length 8 [2019-11-28 18:29:40,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:40,545 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 69 transitions. [2019-11-28 18:29:40,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 18:29:40,546 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 69 transitions. [2019-11-28 18:29:40,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 18:29:40,547 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:40,547 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:40,547 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:40,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:40,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1592223242, now seen corresponding path program 1 times [2019-11-28 18:29:40,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:40,550 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332078213] [2019-11-28 18:29:40,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:40,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:29:40,681 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332078213] [2019-11-28 18:29:40,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:40,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:29:40,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299810884] [2019-11-28 18:29:40,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:29:40,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:40,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:29:40,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:29:40,684 INFO L87 Difference]: Start difference. First operand 36 states and 69 transitions. Second operand 4 states. [2019-11-28 18:29:40,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:40,699 INFO L93 Difference]: Finished difference Result 34 states and 64 transitions. [2019-11-28 18:29:40,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 18:29:40,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-28 18:29:40,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:40,700 INFO L225 Difference]: With dead ends: 34 [2019-11-28 18:29:40,701 INFO L226 Difference]: Without dead ends: 34 [2019-11-28 18:29:40,701 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:29:40,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-28 18:29:40,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-28 18:29:40,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 18:29:40,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-11-28 18:29:40,708 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 9 [2019-11-28 18:29:40,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:40,708 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-11-28 18:29:40,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:29:40,709 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-11-28 18:29:40,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 18:29:40,710 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:40,710 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:40,710 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:40,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:40,710 INFO L82 PathProgramCache]: Analyzing trace with hash -731020953, now seen corresponding path program 1 times [2019-11-28 18:29:40,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:40,711 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966161505] [2019-11-28 18:29:40,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:29:40,831 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966161505] [2019-11-28 18:29:40,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:40,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:29:40,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987118872] [2019-11-28 18:29:40,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:29:40,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:40,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:29:40,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:29:40,833 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 5 states. [2019-11-28 18:29:40,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:40,883 INFO L93 Difference]: Finished difference Result 37 states and 64 transitions. [2019-11-28 18:29:40,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:29:40,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-28 18:29:40,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:40,884 INFO L225 Difference]: With dead ends: 37 [2019-11-28 18:29:40,885 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 18:29:40,885 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 18:29:40,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 18:29:40,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-28 18:29:40,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 18:29:40,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 48 transitions. [2019-11-28 18:29:40,890 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 48 transitions. Word has length 9 [2019-11-28 18:29:40,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:40,891 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 48 transitions. [2019-11-28 18:29:40,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:29:40,891 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 48 transitions. [2019-11-28 18:29:40,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 18:29:40,892 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:40,892 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:40,892 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:40,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:40,892 INFO L82 PathProgramCache]: Analyzing trace with hash 2114338813, now seen corresponding path program 1 times [2019-11-28 18:29:40,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:40,893 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734017370] [2019-11-28 18:29:40,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:40,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:29:40,965 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734017370] [2019-11-28 18:29:40,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:40,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:29:40,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608552002] [2019-11-28 18:29:40,968 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:29:40,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:40,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:29:40,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:29:40,970 INFO L87 Difference]: Start difference. First operand 29 states and 48 transitions. Second operand 4 states. [2019-11-28 18:29:41,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:41,010 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2019-11-28 18:29:41,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:29:41,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 18:29:41,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:41,013 INFO L225 Difference]: With dead ends: 35 [2019-11-28 18:29:41,013 INFO L226 Difference]: Without dead ends: 31 [2019-11-28 18:29:41,015 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 18:29:41,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-28 18:29:41,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-28 18:29:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 18:29:41,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 50 transitions. [2019-11-28 18:29:41,025 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 50 transitions. Word has length 10 [2019-11-28 18:29:41,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:41,025 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 50 transitions. [2019-11-28 18:29:41,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:29:41,025 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 50 transitions. [2019-11-28 18:29:41,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 18:29:41,026 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:41,027 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:41,029 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:41,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:41,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1301449846, now seen corresponding path program 1 times [2019-11-28 18:29:41,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:41,030 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951909570] [2019-11-28 18:29:41,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:29:41,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951909570] [2019-11-28 18:29:41,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:41,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:29:41,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545202373] [2019-11-28 18:29:41,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:29:41,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:41,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:29:41,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:29:41,135 INFO L87 Difference]: Start difference. First operand 31 states and 50 transitions. Second operand 4 states. [2019-11-28 18:29:41,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:41,148 INFO L93 Difference]: Finished difference Result 30 states and 48 transitions. [2019-11-28 18:29:41,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 18:29:41,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 18:29:41,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:41,149 INFO L225 Difference]: With dead ends: 30 [2019-11-28 18:29:41,149 INFO L226 Difference]: Without dead ends: 30 [2019-11-28 18:29:41,150 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:29:41,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-28 18:29:41,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2019-11-28 18:29:41,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 18:29:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 45 transitions. [2019-11-28 18:29:41,157 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 45 transitions. Word has length 10 [2019-11-28 18:29:41,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:41,157 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 45 transitions. [2019-11-28 18:29:41,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:29:41,159 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 45 transitions. [2019-11-28 18:29:41,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 18:29:41,159 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:41,159 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:41,160 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:41,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:41,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1186765067, now seen corresponding path program 2 times [2019-11-28 18:29:41,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:41,166 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896454951] [2019-11-28 18:29:41,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:41,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:29:41,261 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896454951] [2019-11-28 18:29:41,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:41,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:29:41,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82507900] [2019-11-28 18:29:41,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:29:41,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:41,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:29:41,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:29:41,264 INFO L87 Difference]: Start difference. First operand 28 states and 45 transitions. Second operand 5 states. [2019-11-28 18:29:41,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:41,296 INFO L93 Difference]: Finished difference Result 31 states and 47 transitions. [2019-11-28 18:29:41,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:29:41,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-28 18:29:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:41,297 INFO L225 Difference]: With dead ends: 31 [2019-11-28 18:29:41,298 INFO L226 Difference]: Without dead ends: 24 [2019-11-28 18:29:41,298 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 18:29:41,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-28 18:29:41,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-28 18:29:41,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 18:29:41,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 37 transitions. [2019-11-28 18:29:41,304 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 37 transitions. Word has length 10 [2019-11-28 18:29:41,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:41,304 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 37 transitions. [2019-11-28 18:29:41,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:29:41,304 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 37 transitions. [2019-11-28 18:29:41,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 18:29:41,305 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:41,306 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:41,306 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:41,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:41,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1005356980, now seen corresponding path program 1 times [2019-11-28 18:29:41,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:41,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435799237] [2019-11-28 18:29:41,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:41,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:29:41,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435799237] [2019-11-28 18:29:41,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:41,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:29:41,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949931995] [2019-11-28 18:29:41,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:29:41,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:41,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:29:41,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:29:41,385 INFO L87 Difference]: Start difference. First operand 24 states and 37 transitions. Second operand 5 states. [2019-11-28 18:29:41,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:41,408 INFO L93 Difference]: Finished difference Result 26 states and 38 transitions. [2019-11-28 18:29:41,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:29:41,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 18:29:41,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:41,409 INFO L225 Difference]: With dead ends: 26 [2019-11-28 18:29:41,409 INFO L226 Difference]: Without dead ends: 15 [2019-11-28 18:29:41,409 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 18:29:41,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-28 18:29:41,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-28 18:29:41,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 18:29:41,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-28 18:29:41,411 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2019-11-28 18:29:41,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:41,412 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-28 18:29:41,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:29:41,412 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-28 18:29:41,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 18:29:41,412 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:29:41,413 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:29:41,413 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:29:41,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:29:41,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1690191566, now seen corresponding path program 2 times [2019-11-28 18:29:41,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:29:41,414 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726200050] [2019-11-28 18:29:41,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:29:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:29:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:29:41,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726200050] [2019-11-28 18:29:41,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:29:41,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:29:41,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160564256] [2019-11-28 18:29:41,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:29:41,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:29:41,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:29:41,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:29:41,522 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2019-11-28 18:29:41,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:29:41,541 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2019-11-28 18:29:41,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:29:41,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 18:29:41,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:29:41,544 INFO L225 Difference]: With dead ends: 14 [2019-11-28 18:29:41,544 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 18:29:41,544 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:29:41,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 18:29:41,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 18:29:41,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 18:29:41,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 18:29:41,547 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-28 18:29:41,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:29:41,547 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 18:29:41,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:29:41,547 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 18:29:41,547 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 18:29:41,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:29:41 BasicIcfg [2019-11-28 18:29:41,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 18:29:41,552 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 18:29:41,552 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 18:29:41,552 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 18:29:41,552 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:29:38" (3/4) ... [2019-11-28 18:29:41,558 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 18:29:41,567 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-28 18:29:41,568 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-28 18:29:41,569 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-28 18:29:41,578 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-28 18:29:41,578 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 18:29:41,578 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 18:29:41,624 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 18:29:41,624 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 18:29:41,626 INFO L168 Benchmark]: Toolchain (without parser) took 4554.04 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 226.5 MB). Free memory was 956.3 MB in the beginning and 1.2 GB in the end (delta: -245.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:29:41,626 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:29:41,627 INFO L168 Benchmark]: CACSL2BoogieTranslator took 852.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 18:29:41,627 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:29:41,628 INFO L168 Benchmark]: Boogie Preprocessor took 26.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:29:41,628 INFO L168 Benchmark]: RCFGBuilder took 428.96 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: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2019-11-28 18:29:41,629 INFO L168 Benchmark]: TraceAbstraction took 3122.17 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -118.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:29:41,630 INFO L168 Benchmark]: Witness Printer took 72.39 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 11.5 GB. [2019-11-28 18:29:41,633 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 852.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.05 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 26.23 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 428.96 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: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3122.17 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -118.8 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 72.39 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 63 ProgramPointsBefore, 21 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 243 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 17 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 482 CheckedPairsTotal, 45 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: 3.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 89 SDslu, 64 SDs, 0 SdLazy, 58 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s 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, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 3754 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...