./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-nondet/nondet-array-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 701f399f 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-nondet/nondet-array-1.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 bd7f48506d18b6e9cdd68178e930b6c5cab4d379 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-701f399 [2019-11-22 10:05:15,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-22 10:05:15,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-22 10:05:15,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-22 10:05:15,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-22 10:05:15,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-22 10:05:15,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-22 10:05:15,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-22 10:05:15,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-22 10:05:15,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-22 10:05:15,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-22 10:05:15,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-22 10:05:15,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-22 10:05:15,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-22 10:05:15,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-22 10:05:15,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-22 10:05:15,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-22 10:05:15,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-22 10:05:15,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-22 10:05:15,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-22 10:05:15,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-22 10:05:15,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-22 10:05:15,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-22 10:05:15,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-22 10:05:15,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-22 10:05:15,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-22 10:05:15,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-22 10:05:15,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-22 10:05:15,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-22 10:05:15,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-22 10:05:15,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-22 10:05:15,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-22 10:05:15,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-22 10:05:15,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-22 10:05:15,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-22 10:05:15,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-22 10:05:15,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-22 10:05:15,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-22 10:05:15,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-22 10:05:15,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-22 10:05:15,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-22 10:05:15,547 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-22 10:05:15,561 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-22 10:05:15,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-22 10:05:15,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-22 10:05:15,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-22 10:05:15,564 INFO L138 SettingsManager]: * Use SBE=true [2019-11-22 10:05:15,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-22 10:05:15,564 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-22 10:05:15,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-22 10:05:15,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-22 10:05:15,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-22 10:05:15,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-22 10:05:15,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-22 10:05:15,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-22 10:05:15,566 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-22 10:05:15,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-22 10:05:15,567 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-22 10:05:15,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-22 10:05:15,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-22 10:05:15,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-22 10:05:15,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-22 10:05:15,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-22 10:05:15,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-22 10:05:15,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-22 10:05:15,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-22 10:05:15,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-22 10:05:15,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-22 10:05:15,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-22 10:05:15,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-22 10:05:15,574 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 -> bd7f48506d18b6e9cdd68178e930b6c5cab4d379 [2019-11-22 10:05:15,889 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-22 10:05:15,902 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-22 10:05:15,906 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-22 10:05:15,908 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-22 10:05:15,908 INFO L275 PluginConnector]: CDTParser initialized [2019-11-22 10:05:15,909 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-nondet/nondet-array-1.i [2019-11-22 10:05:15,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c5f214ea/87533b259b5f4f57b3fb82cbc2ead4f0/FLAGb85c58b78 [2019-11-22 10:05:16,488 INFO L306 CDTParser]: Found 1 translation units. [2019-11-22 10:05:16,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-nondet/nondet-array-1.i [2019-11-22 10:05:16,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c5f214ea/87533b259b5f4f57b3fb82cbc2ead4f0/FLAGb85c58b78 [2019-11-22 10:05:16,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c5f214ea/87533b259b5f4f57b3fb82cbc2ead4f0 [2019-11-22 10:05:16,795 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-22 10:05:16,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-22 10:05:16,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-22 10:05:16,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-22 10:05:16,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-22 10:05:16,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:05:16" (1/1) ... [2019-11-22 10:05:16,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb46d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:16, skipping insertion in model container [2019-11-22 10:05:16,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:05:16" (1/1) ... [2019-11-22 10:05:16,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-22 10:05:16,874 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-22 10:05:17,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 10:05:17,315 INFO L201 MainTranslator]: Completed pre-run [2019-11-22 10:05:17,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-22 10:05:17,486 INFO L205 MainTranslator]: Completed translation [2019-11-22 10:05:17,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:17 WrapperNode [2019-11-22 10:05:17,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-22 10:05:17,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-22 10:05:17,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-22 10:05:17,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-22 10:05:17,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:17" (1/1) ... [2019-11-22 10:05:17,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:17" (1/1) ... [2019-11-22 10:05:17,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-22 10:05:17,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-22 10:05:17,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-22 10:05:17,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-22 10:05:17,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:17" (1/1) ... [2019-11-22 10:05:17,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:17" (1/1) ... [2019-11-22 10:05:17,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:17" (1/1) ... [2019-11-22 10:05:17,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:17" (1/1) ... [2019-11-22 10:05:17,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:17" (1/1) ... [2019-11-22 10:05:17,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:17" (1/1) ... [2019-11-22 10:05:17,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:17" (1/1) ... [2019-11-22 10:05:17,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-22 10:05:17,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-22 10:05:17,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-22 10:05:17,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-22 10:05:17,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:17" (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 [2019-11-22 10:05:17,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-22 10:05:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-22 10:05:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-22 10:05:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2019-11-22 10:05:17,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2019-11-22 10:05:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-22 10:05:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-22 10:05:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-22 10:05:17,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-22 10:05:17,654 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-22 10:05:18,043 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-22 10:05:18,043 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-22 10:05:18,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:05:18 BoogieIcfgContainer [2019-11-22 10:05:18,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-22 10:05:18,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-22 10:05:18,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-22 10:05:18,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-22 10:05:18,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:05:16" (1/3) ... [2019-11-22 10:05:18,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a52ac87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:05:18, skipping insertion in model container [2019-11-22 10:05:18,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:17" (2/3) ... [2019-11-22 10:05:18,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a52ac87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:05:18, skipping insertion in model container [2019-11-22 10:05:18,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:05:18" (3/3) ... [2019-11-22 10:05:18,052 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2019-11-22 10:05:18,086 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,087 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,087 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,087 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,088 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,088 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,089 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,089 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,090 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,090 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,090 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,090 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,091 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,091 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,092 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,092 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,092 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,092 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,093 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,093 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,094 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-22 10:05:18,113 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-22 10:05:18,114 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-22 10:05:18,122 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-22 10:05:18,131 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-22 10:05:18,147 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-22 10:05:18,148 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-22 10:05:18,148 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-22 10:05:18,148 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-22 10:05:18,149 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-22 10:05:18,149 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-22 10:05:18,149 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-22 10:05:18,149 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-22 10:05:18,158 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 79 transitions [2019-11-22 10:05:19,162 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 10826 states. [2019-11-22 10:05:19,167 INFO L276 IsEmpty]: Start isEmpty. Operand 10826 states. [2019-11-22 10:05:19,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-22 10:05:19,184 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 10:05:19,185 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-22 10:05:19,186 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-22 10:05:19,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 10:05:19,196 INFO L82 PathProgramCache]: Analyzing trace with hash 197122563, now seen corresponding path program 1 times [2019-11-22 10:05:19,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-22 10:05:19,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792909375] [2019-11-22 10:05:19,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-22 10:05:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 10:05:19,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-22 10:05:19,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792909375] [2019-11-22 10:05:19,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-22 10:05:19,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-22 10:05:19,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293031897] [2019-11-22 10:05:19,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-22 10:05:19,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-22 10:05:19,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-22 10:05:19,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-22 10:05:19,513 INFO L87 Difference]: Start difference. First operand 10826 states. Second operand 2 states. [2019-11-22 10:05:19,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-22 10:05:19,677 INFO L93 Difference]: Finished difference Result 10826 states and 34276 transitions. [2019-11-22 10:05:19,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-22 10:05:19,679 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2019-11-22 10:05:19,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-22 10:05:19,773 INFO L225 Difference]: With dead ends: 10826 [2019-11-22 10:05:19,774 INFO L226 Difference]: Without dead ends: 8334 [2019-11-22 10:05:19,775 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 [2019-11-22 10:05:19,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8334 states. [2019-11-22 10:05:20,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8334 to 8334. [2019-11-22 10:05:20,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8334 states. [2019-11-22 10:05:20,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8334 states to 8334 states and 26294 transitions. [2019-11-22 10:05:20,284 INFO L78 Accepts]: Start accepts. Automaton has 8334 states and 26294 transitions. Word has length 29 [2019-11-22 10:05:20,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-22 10:05:20,284 INFO L462 AbstractCegarLoop]: Abstraction has 8334 states and 26294 transitions. [2019-11-22 10:05:20,285 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-22 10:05:20,285 INFO L276 IsEmpty]: Start isEmpty. Operand 8334 states and 26294 transitions. [2019-11-22 10:05:20,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-22 10:05:20,286 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 10:05:20,287 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-22 10:05:20,287 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-22 10:05:20,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 10:05:20,288 INFO L82 PathProgramCache]: Analyzing trace with hash 916313188, now seen corresponding path program 1 times [2019-11-22 10:05:20,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-22 10:05:20,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892421513] [2019-11-22 10:05:20,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-22 10:05:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 10:05:20,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-22 10:05:20,427 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892421513] [2019-11-22 10:05:20,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-22 10:05:20,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-22 10:05:20,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277452822] [2019-11-22 10:05:20,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-22 10:05:20,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-22 10:05:20,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-22 10:05:20,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-22 10:05:20,431 INFO L87 Difference]: Start difference. First operand 8334 states and 26294 transitions. Second operand 4 states. [2019-11-22 10:05:20,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-22 10:05:20,568 INFO L93 Difference]: Finished difference Result 6020 states and 17029 transitions. [2019-11-22 10:05:20,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-22 10:05:20,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2019-11-22 10:05:20,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-22 10:05:20,606 INFO L225 Difference]: With dead ends: 6020 [2019-11-22 10:05:20,606 INFO L226 Difference]: Without dead ends: 6020 [2019-11-22 10:05:20,607 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-22 10:05:20,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6020 states. [2019-11-22 10:05:20,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6020 to 5262. [2019-11-22 10:05:20,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5262 states. [2019-11-22 10:05:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5262 states to 5262 states and 15165 transitions. [2019-11-22 10:05:20,766 INFO L78 Accepts]: Start accepts. Automaton has 5262 states and 15165 transitions. Word has length 29 [2019-11-22 10:05:20,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-22 10:05:20,767 INFO L462 AbstractCegarLoop]: Abstraction has 5262 states and 15165 transitions. [2019-11-22 10:05:20,767 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-22 10:05:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 5262 states and 15165 transitions. [2019-11-22 10:05:20,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-22 10:05:20,786 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 10:05:20,786 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-22 10:05:20,786 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-22 10:05:20,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 10:05:20,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1176794984, now seen corresponding path program 1 times [2019-11-22 10:05:20,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-22 10:05:20,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684972555] [2019-11-22 10:05:20,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-22 10:05:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 10:05:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-22 10:05:21,130 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684972555] [2019-11-22 10:05:21,130 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504842231] [2019-11-22 10:05:21,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-22 10:05:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 10:05:21,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-22 10:05:21,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-22 10:05:21,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-22 10:05:21,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-22 10:05:21,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6] total 18 [2019-11-22 10:05:21,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780092527] [2019-11-22 10:05:21,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-22 10:05:21,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-22 10:05:21,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-22 10:05:21,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2019-11-22 10:05:21,395 INFO L87 Difference]: Start difference. First operand 5262 states and 15165 transitions. Second operand 18 states. [2019-11-22 10:05:21,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-22 10:05:21,676 INFO L93 Difference]: Finished difference Result 5993 states and 16981 transitions. [2019-11-22 10:05:21,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-22 10:05:21,677 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 55 [2019-11-22 10:05:21,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-22 10:05:21,707 INFO L225 Difference]: With dead ends: 5993 [2019-11-22 10:05:21,713 INFO L226 Difference]: Without dead ends: 5993 [2019-11-22 10:05:21,714 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2019-11-22 10:05:21,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5993 states. [2019-11-22 10:05:21,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5993 to 5250. [2019-11-22 10:05:21,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5250 states. [2019-11-22 10:05:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5250 states to 5250 states and 15137 transitions. [2019-11-22 10:05:21,881 INFO L78 Accepts]: Start accepts. Automaton has 5250 states and 15137 transitions. Word has length 55 [2019-11-22 10:05:21,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-22 10:05:21,882 INFO L462 AbstractCegarLoop]: Abstraction has 5250 states and 15137 transitions. [2019-11-22 10:05:21,883 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-22 10:05:21,883 INFO L276 IsEmpty]: Start isEmpty. Operand 5250 states and 15137 transitions. [2019-11-22 10:05:21,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-22 10:05:21,897 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 10:05:21,898 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-22 10:05:22,103 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-22 10:05:22,103 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-22 10:05:22,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 10:05:22,105 INFO L82 PathProgramCache]: Analyzing trace with hash -960128164, now seen corresponding path program 1 times [2019-11-22 10:05:22,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-22 10:05:22,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380481750] [2019-11-22 10:05:22,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-22 10:05:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 10:05:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-22 10:05:22,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380481750] [2019-11-22 10:05:22,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110114500] [2019-11-22 10:05:22,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-22 10:05:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 10:05:22,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-22 10:05:22,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-22 10:05:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-22 10:05:22,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-22 10:05:22,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8] total 22 [2019-11-22 10:05:22,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598780397] [2019-11-22 10:05:22,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-22 10:05:22,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-22 10:05:22,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-22 10:05:22,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2019-11-22 10:05:22,691 INFO L87 Difference]: Start difference. First operand 5250 states and 15137 transitions. Second operand 22 states. [2019-11-22 10:05:23,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-22 10:05:23,126 INFO L93 Difference]: Finished difference Result 5813 states and 16519 transitions. [2019-11-22 10:05:23,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-22 10:05:23,128 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 62 [2019-11-22 10:05:23,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-22 10:05:23,144 INFO L225 Difference]: With dead ends: 5813 [2019-11-22 10:05:23,144 INFO L226 Difference]: Without dead ends: 5813 [2019-11-22 10:05:23,145 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2019-11-22 10:05:23,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5813 states. [2019-11-22 10:05:23,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5813 to 5178. [2019-11-22 10:05:23,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5178 states. [2019-11-22 10:05:23,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5178 states to 5178 states and 14909 transitions. [2019-11-22 10:05:23,275 INFO L78 Accepts]: Start accepts. Automaton has 5178 states and 14909 transitions. Word has length 62 [2019-11-22 10:05:23,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-22 10:05:23,276 INFO L462 AbstractCegarLoop]: Abstraction has 5178 states and 14909 transitions. [2019-11-22 10:05:23,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-22 10:05:23,277 INFO L276 IsEmpty]: Start isEmpty. Operand 5178 states and 14909 transitions. [2019-11-22 10:05:23,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-22 10:05:23,289 INFO L402 BasicCegarLoop]: Found error trace [2019-11-22 10:05:23,289 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-22 10:05:23,492 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-22 10:05:23,492 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-22 10:05:23,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-22 10:05:23,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1663676489, now seen corresponding path program 1 times [2019-11-22 10:05:23,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-22 10:05:23,493 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985435875] [2019-11-22 10:05:23,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-22 10:05:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 10:05:23,827 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-22 10:05:23,828 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985435875] [2019-11-22 10:05:23,828 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551710803] [2019-11-22 10:05:23,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-22 10:05:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-22 10:05:23,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-22 10:05:23,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-22 10:05:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-22 10:05:24,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-22 10:05:24,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10] total 26 [2019-11-22 10:05:24,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33639186] [2019-11-22 10:05:24,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-22 10:05:24,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-22 10:05:24,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-22 10:05:24,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2019-11-22 10:05:24,092 INFO L87 Difference]: Start difference. First operand 5178 states and 14909 transitions. Second operand 26 states. [2019-11-22 10:05:24,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-22 10:05:24,356 INFO L93 Difference]: Finished difference Result 1395 states and 4334 transitions. [2019-11-22 10:05:24,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-22 10:05:24,357 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 69 [2019-11-22 10:05:24,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-22 10:05:24,357 INFO L225 Difference]: With dead ends: 1395 [2019-11-22 10:05:24,357 INFO L226 Difference]: Without dead ends: 0 [2019-11-22 10:05:24,358 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=827, Unknown=0, NotChecked=0, Total=1056 [2019-11-22 10:05:24,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-22 10:05:24,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-22 10:05:24,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-22 10:05:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-22 10:05:24,359 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2019-11-22 10:05:24,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-22 10:05:24,360 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-22 10:05:24,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-22 10:05:24,360 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-22 10:05:24,360 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-22 10:05:24,565 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-22 10:05:24,570 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-22 10:05:24,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 10:05:24 BasicIcfg [2019-11-22 10:05:24,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-22 10:05:24,572 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-22 10:05:24,572 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-22 10:05:24,572 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-22 10:05:24,573 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:05:18" (3/4) ... [2019-11-22 10:05:24,576 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-22 10:05:24,583 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr [2019-11-22 10:05:24,588 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-22 10:05:24,588 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-22 10:05:24,588 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-22 10:05:24,632 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-22 10:05:24,633 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-22 10:05:24,635 INFO L168 Benchmark]: Toolchain (without parser) took 7837.54 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 349.2 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -107.8 MB). Peak memory consumption was 241.3 MB. Max. memory is 11.5 GB. [2019-11-22 10:05:24,636 INFO L168 Benchmark]: CDTParser took 0.24 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. [2019-11-22 10:05:24,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -156.2 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-11-22 10:05:24,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.00 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. [2019-11-22 10:05:24,638 INFO L168 Benchmark]: Boogie Preprocessor took 28.24 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. [2019-11-22 10:05:24,638 INFO L168 Benchmark]: RCFGBuilder took 455.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2019-11-22 10:05:24,639 INFO L168 Benchmark]: TraceAbstraction took 6526.64 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 198.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.3 MB). Peak memory consumption was 222.0 MB. Max. memory is 11.5 GB. [2019-11-22 10:05:24,640 INFO L168 Benchmark]: Witness Printer took 60.80 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2019-11-22 10:05:24,645 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 686.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -156.2 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 72.00 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 28.24 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 455.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6526.64 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 198.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.3 MB). Peak memory consumption was 222.0 MB. Max. memory is 11.5 GB. * Witness Printer took 60.80 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 675]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 78 locations, 1 error locations. Result: SAFE, OverallTime: 6.4s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 342 SDtfs, 973 SDslu, 1650 SDs, 0 SdLazy, 496 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 252 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10826occurred 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: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 2136 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 430 NumberOfCodeBlocks, 430 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 422 ConstructedInterpolants, 0 QuantifiedInterpolants, 100082 SizeOfPredicates, 18 NumberOfNonLiveVariables, 378 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 6/80 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...