./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/15_dekker.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-ext/15_dekker.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 316c62654735ab7f9412d0ff424f710640d92e79 ...................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 17:57:58,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:57:58,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:57:58,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:57:58,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:57:58,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:57:58,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:57:58,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:57:58,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:57:58,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:57:58,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:57:58,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:57:58,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:57:58,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:57:58,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:57:58,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:57:58,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:57:58,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:57:58,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:57:58,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:57:58,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:57:58,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:57:58,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:57:58,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:57:58,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:57:58,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:57:58,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:57:58,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:57:58,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:57:58,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:57:58,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:57:58,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:57:58,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:57:58,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:57:58,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:57:58,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:57:58,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:57:58,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:57:58,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:57:58,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:57:58,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:57:58,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:57:58,735 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:57:58,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:57:58,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:57:58,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:57:58,737 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:57:58,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:57:58,738 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:57:58,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:57:58,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:57:58,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:57:58,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:57:58,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:57:58,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:57:58,742 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:57:58,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:57:58,742 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:57:58,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:57:58,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:57:58,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:57:58,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:57:58,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:57:58,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:57:58,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:57:58,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:57:58,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:57:58,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:57:58,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:57:58,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:57:58,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:57:58,746 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 -> 316c62654735ab7f9412d0ff424f710640d92e79 [2019-11-28 17:57:59,052 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:57:59,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:57:59,076 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:57:59,078 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:57:59,079 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:57:59,080 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/15_dekker.i [2019-11-28 17:57:59,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c8f9dbca/1e24a6e1d267476aaffa0ed998a1bb8a/FLAGf21188adf [2019-11-28 17:57:59,684 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:57:59,685 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/15_dekker.i [2019-11-28 17:57:59,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c8f9dbca/1e24a6e1d267476aaffa0ed998a1bb8a/FLAGf21188adf [2019-11-28 17:58:00,000 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c8f9dbca/1e24a6e1d267476aaffa0ed998a1bb8a [2019-11-28 17:58:00,004 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:58:00,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:58:00,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:58:00,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:58:00,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:58:00,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:58:00" (1/1) ... [2019-11-28 17:58:00,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b8bcb05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:00, skipping insertion in model container [2019-11-28 17:58:00,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:58:00" (1/1) ... [2019-11-28 17:58:00,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:58:00,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:58:00,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:58:00,566 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:58:00,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:58:00,699 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:58:00,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:00 WrapperNode [2019-11-28 17:58:00,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:58:00,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:58:00,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:58:00,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:58:00,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:00" (1/1) ... [2019-11-28 17:58:00,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:00" (1/1) ... [2019-11-28 17:58:00,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:58:00,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:58:00,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:58:00,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:58:00,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:00" (1/1) ... [2019-11-28 17:58:00,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:00" (1/1) ... [2019-11-28 17:58:00,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:00" (1/1) ... [2019-11-28 17:58:00,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:00" (1/1) ... [2019-11-28 17:58:00,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:00" (1/1) ... [2019-11-28 17:58:00,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:00" (1/1) ... [2019-11-28 17:58:00,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:00" (1/1) ... [2019-11-28 17:58:00,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:58:00,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:58:00,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:58:00,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:58:00,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:00" (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 17:58:00,847 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-28 17:58:00,847 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-28 17:58:00,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 17:58:00,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 17:58:00,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 17:58:00,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:58:00,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:58:00,849 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 17:58:01,216 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:58:01,216 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-28 17:58:01,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:58:01 BoogieIcfgContainer [2019-11-28 17:58:01,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:58:01,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:58:01,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:58:01,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:58:01,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:58:00" (1/3) ... [2019-11-28 17:58:01,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d25f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:58:01, skipping insertion in model container [2019-11-28 17:58:01,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:00" (2/3) ... [2019-11-28 17:58:01,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d25f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:58:01, skipping insertion in model container [2019-11-28 17:58:01,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:58:01" (3/3) ... [2019-11-28 17:58:01,225 INFO L109 eAbstractionObserver]: Analyzing ICFG 15_dekker.i [2019-11-28 17:58:01,234 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-28 17:58:01,234 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:58:01,242 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-28 17:58:01,243 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-11-28 17:58:01,264 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:01,265 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:01,265 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:01,265 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:01,266 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:01,266 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:01,289 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 17:58:01,305 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:58:01,305 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:58:01,305 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:58:01,305 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:58:01,305 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:58:01,306 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:58:01,306 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:58:01,306 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:58:01,317 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 65 transitions [2019-11-28 17:58:01,319 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 65 transitions [2019-11-28 17:58:01,360 INFO L134 PetriNetUnfolder]: 12/64 cut-off events. [2019-11-28 17:58:01,361 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 17:58:01,368 INFO L76 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 12/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 140 event pairs. 3/53 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2019-11-28 17:58:01,371 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 65 transitions [2019-11-28 17:58:01,388 INFO L134 PetriNetUnfolder]: 12/64 cut-off events. [2019-11-28 17:58:01,388 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 17:58:01,391 INFO L76 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 12/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 140 event pairs. 3/53 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2019-11-28 17:58:01,395 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1302 [2019-11-28 17:58:01,397 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-11-28 17:58:02,339 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2789 [2019-11-28 17:58:02,340 INFO L214 etLargeBlockEncoding]: Total number of compositions: 39 [2019-11-28 17:58:02,343 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 34 transitions [2019-11-28 17:58:02,363 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 134 states. [2019-11-28 17:58:02,365 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states. [2019-11-28 17:58:02,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 17:58:02,372 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:58:02,373 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 17:58:02,373 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:58:02,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:58:02,379 INFO L82 PathProgramCache]: Analyzing trace with hash 264070407, now seen corresponding path program 1 times [2019-11-28 17:58:02,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:58:02,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994184309] [2019-11-28 17:58:02,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:58:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:58:02,547 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 17:58:02,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994184309] [2019-11-28 17:58:02,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:58:02,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:58:02,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025479102] [2019-11-28 17:58:02,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 17:58:02,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:58:02,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 17:58:02,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:58:02,577 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 2 states. [2019-11-28 17:58:02,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:58:02,597 INFO L93 Difference]: Finished difference Result 134 states and 312 transitions. [2019-11-28 17:58:02,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 17:58:02,599 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-28 17:58:02,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:58:02,613 INFO L225 Difference]: With dead ends: 134 [2019-11-28 17:58:02,614 INFO L226 Difference]: Without dead ends: 122 [2019-11-28 17:58:02,615 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:58:02,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-11-28 17:58:02,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2019-11-28 17:58:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-11-28 17:58:02,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 288 transitions. [2019-11-28 17:58:02,668 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 288 transitions. Word has length 5 [2019-11-28 17:58:02,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:58:02,669 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 288 transitions. [2019-11-28 17:58:02,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 17:58:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 288 transitions. [2019-11-28 17:58:02,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 17:58:02,671 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:58:02,671 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 17:58:02,671 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:58:02,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:58:02,672 INFO L82 PathProgramCache]: Analyzing trace with hash -403790346, now seen corresponding path program 1 times [2019-11-28 17:58:02,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:58:02,672 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295682122] [2019-11-28 17:58:02,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:58:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:58:02,745 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 17:58:02,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295682122] [2019-11-28 17:58:02,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:58:02,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:58:02,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690200558] [2019-11-28 17:58:02,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:58:02,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:58:02,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:58:02,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:58:02,751 INFO L87 Difference]: Start difference. First operand 122 states and 288 transitions. Second operand 3 states. [2019-11-28 17:58:02,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:58:02,796 INFO L93 Difference]: Finished difference Result 128 states and 286 transitions. [2019-11-28 17:58:02,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:58:02,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-28 17:58:02,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:58:02,802 INFO L225 Difference]: With dead ends: 128 [2019-11-28 17:58:02,803 INFO L226 Difference]: Without dead ends: 100 [2019-11-28 17:58:02,807 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:58:02,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-11-28 17:58:02,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2019-11-28 17:58:02,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-11-28 17:58:02,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 216 transitions. [2019-11-28 17:58:02,836 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 216 transitions. Word has length 6 [2019-11-28 17:58:02,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:58:02,837 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 216 transitions. [2019-11-28 17:58:02,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:58:02,838 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 216 transitions. [2019-11-28 17:58:02,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 17:58:02,840 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:58:02,840 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 17:58:02,841 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:58:02,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:58:02,842 INFO L82 PathProgramCache]: Analyzing trace with hash -404462025, now seen corresponding path program 1 times [2019-11-28 17:58:02,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:58:02,848 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957008021] [2019-11-28 17:58:02,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:58:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:58:02,918 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 17:58:02,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957008021] [2019-11-28 17:58:02,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:58:02,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:58:02,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561368280] [2019-11-28 17:58:02,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:58:02,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:58:02,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:58:02,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:58:02,921 INFO L87 Difference]: Start difference. First operand 94 states and 216 transitions. Second operand 3 states. [2019-11-28 17:58:02,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:58:02,953 INFO L93 Difference]: Finished difference Result 89 states and 198 transitions. [2019-11-28 17:58:02,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:58:02,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-28 17:58:02,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:58:02,955 INFO L225 Difference]: With dead ends: 89 [2019-11-28 17:58:02,955 INFO L226 Difference]: Without dead ends: 68 [2019-11-28 17:58:02,956 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:58:02,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-28 17:58:02,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-11-28 17:58:02,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-28 17:58:02,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 151 transitions. [2019-11-28 17:58:02,965 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 151 transitions. Word has length 6 [2019-11-28 17:58:02,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:58:02,965 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 151 transitions. [2019-11-28 17:58:02,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:58:02,966 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 151 transitions. [2019-11-28 17:58:02,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 17:58:02,967 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:58:02,967 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:58:02,968 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:58:02,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:58:02,968 INFO L82 PathProgramCache]: Analyzing trace with hash -2065038419, now seen corresponding path program 1 times [2019-11-28 17:58:02,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:58:02,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600547805] [2019-11-28 17:58:02,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:58:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:58:03,020 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 17:58:03,020 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600547805] [2019-11-28 17:58:03,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:58:03,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 17:58:03,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003267228] [2019-11-28 17:58:03,021 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:58:03,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:58:03,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:58:03,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:58:03,023 INFO L87 Difference]: Start difference. First operand 68 states and 151 transitions. Second operand 3 states. [2019-11-28 17:58:03,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:58:03,044 INFO L93 Difference]: Finished difference Result 68 states and 146 transitions. [2019-11-28 17:58:03,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:58:03,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 17:58:03,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:58:03,046 INFO L225 Difference]: With dead ends: 68 [2019-11-28 17:58:03,047 INFO L226 Difference]: Without dead ends: 58 [2019-11-28 17:58:03,047 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:58:03,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-28 17:58:03,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2019-11-28 17:58:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-28 17:58:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 122 transitions. [2019-11-28 17:58:03,054 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 122 transitions. Word has length 9 [2019-11-28 17:58:03,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:58:03,055 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 122 transitions. [2019-11-28 17:58:03,055 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:58:03,056 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 122 transitions. [2019-11-28 17:58:03,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 17:58:03,057 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:58:03,057 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:58:03,057 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:58:03,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:58:03,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1895831409, now seen corresponding path program 2 times [2019-11-28 17:58:03,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:58:03,059 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743255432] [2019-11-28 17:58:03,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:58:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:58:03,107 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 17:58:03,108 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743255432] [2019-11-28 17:58:03,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:58:03,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 17:58:03,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602100059] [2019-11-28 17:58:03,110 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:58:03,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:58:03,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:58:03,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:58:03,111 INFO L87 Difference]: Start difference. First operand 58 states and 122 transitions. Second operand 3 states. [2019-11-28 17:58:03,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:58:03,129 INFO L93 Difference]: Finished difference Result 37 states and 93 transitions. [2019-11-28 17:58:03,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:58:03,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 17:58:03,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:58:03,131 INFO L225 Difference]: With dead ends: 37 [2019-11-28 17:58:03,131 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:58:03,132 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:58:03,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:58:03,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:58:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:58:03,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:58:03,133 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-11-28 17:58:03,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:58:03,133 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:58:03,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:58:03,134 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:58:03,135 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:58:03,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:58:03 BasicIcfg [2019-11-28 17:58:03,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:58:03,141 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:58:03,141 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:58:03,141 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:58:03,142 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:58:01" (3/4) ... [2019-11-28 17:58:03,146 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:58:03,154 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-11-28 17:58:03,167 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-28 17:58:03,167 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 17:58:03,168 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 17:58:03,214 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:58:03,215 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:58:03,217 INFO L168 Benchmark]: Toolchain (without parser) took 3210.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 960.4 MB in the beginning and 934.3 MB in the end (delta: 26.1 MB). Peak memory consumption was 174.5 MB. Max. memory is 11.5 GB. [2019-11-28 17:58:03,217 INFO L168 Benchmark]: CDTParser took 0.86 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 17:58:03,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2019-11-28 17:58:03,219 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:58:03,220 INFO L168 Benchmark]: Boogie Preprocessor took 26.84 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 17:58:03,220 INFO L168 Benchmark]: RCFGBuilder took 438.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-11-28 17:58:03,221 INFO L168 Benchmark]: TraceAbstraction took 1922.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 940.8 MB in the end (delta: 152.2 MB). Peak memory consumption was 152.2 MB. Max. memory is 11.5 GB. [2019-11-28 17:58:03,222 INFO L168 Benchmark]: Witness Printer took 73.84 ms. Allocated memory is still 1.2 GB. Free memory was 940.8 MB in the beginning and 934.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:58:03,226 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86 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 692.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.84 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 438.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1922.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 940.8 MB in the end (delta: 152.2 MB). Peak memory consumption was 152.2 MB. Max. memory is 11.5 GB. * Witness Printer took 73.84 ms. Allocated memory is still 1.2 GB. Free memory was 940.8 MB in the beginning and 934.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.0s, 57 ProgramPointsBefore, 26 ProgramPointsAfterwards, 65 TransitionsBefore, 34 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 6 FixpointIterations, 10 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 649 VarBasedMoverChecksPositive, 46 VarBasedMoverChecksNegative, 26 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2789 CheckedPairsTotal, 39 TotalNumberOfCompositions - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 701]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 2 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 156 SDtfs, 67 SDslu, 49 SDs, 0 SdLazy, 28 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred 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, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 310 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...