./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23d6b37cce6e4e70f463b4fcfeceed30aecb1d10 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 18:31:53,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 18:31:53,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 18:31:53,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 18:31:53,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 18:31:53,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 18:31:53,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 18:31:53,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 18:31:53,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 18:31:53,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 18:31:53,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 18:31:53,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 18:31:53,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 18:31:53,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 18:31:53,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 18:31:53,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 18:31:53,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 18:31:53,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 18:31:53,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 18:31:53,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 18:31:53,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 18:31:53,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 18:31:53,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 18:31:53,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 18:31:53,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 18:31:53,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 18:31:53,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 18:31:53,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 18:31:53,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 18:31:53,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 18:31:53,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 18:31:53,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 18:31:53,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 18:31:53,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 18:31:53,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 18:31:53,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 18:31:53,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 18:31:53,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 18:31:53,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 18:31:53,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 18:31:53,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 18:31:53,512 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 18:31:53,539 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 18:31:53,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 18:31:53,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 18:31:53,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 18:31:53,542 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 18:31:53,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 18:31:53,542 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 18:31:53,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 18:31:53,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 18:31:53,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 18:31:53,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 18:31:53,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 18:31:53,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 18:31:53,548 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 18:31:53,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 18:31:53,548 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 18:31:53,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 18:31:53,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 18:31:53,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 18:31:53,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 18:31:53,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 18:31:53,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 18:31:53,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 18:31:53,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 18:31:53,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 18:31:53,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 18:31:53,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 18:31:53,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 18:31:53,552 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 18:31:53,552 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 -> 23d6b37cce6e4e70f463b4fcfeceed30aecb1d10 [2019-11-28 18:31:53,839 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 18:31:53,856 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 18:31:53,859 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 18:31:53,861 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 18:31:53,861 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 18:31:53,862 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i [2019-11-28 18:31:53,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3720aea1e/d53c57e8874049f0abd4b1843eec835a/FLAGe77f0ad62 [2019-11-28 18:31:54,541 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 18:31:54,542 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i [2019-11-28 18:31:54,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3720aea1e/d53c57e8874049f0abd4b1843eec835a/FLAGe77f0ad62 [2019-11-28 18:31:54,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3720aea1e/d53c57e8874049f0abd4b1843eec835a [2019-11-28 18:31:54,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 18:31:54,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 18:31:54,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 18:31:54,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 18:31:54,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 18:31:54,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:31:54" (1/1) ... [2019-11-28 18:31:54,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1200897d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:31:54, skipping insertion in model container [2019-11-28 18:31:54,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:31:54" (1/1) ... [2019-11-28 18:31:54,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 18:31:54,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 18:31:55,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:31:55,446 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 18:31:55,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:31:55,588 INFO L208 MainTranslator]: Completed translation [2019-11-28 18:31:55,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:31:55 WrapperNode [2019-11-28 18:31:55,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 18:31:55,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 18:31:55,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 18:31:55,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 18:31:55,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:31:55" (1/1) ... [2019-11-28 18:31:55,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:31:55" (1/1) ... [2019-11-28 18:31:55,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 18:31:55,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 18:31:55,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 18:31:55,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 18:31:55,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:31:55" (1/1) ... [2019-11-28 18:31:55,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:31:55" (1/1) ... [2019-11-28 18:31:55,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:31:55" (1/1) ... [2019-11-28 18:31:55,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:31:55" (1/1) ... [2019-11-28 18:31:55,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:31:55" (1/1) ... [2019-11-28 18:31:55,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:31:55" (1/1) ... [2019-11-28 18:31:55,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:31:55" (1/1) ... [2019-11-28 18:31:55,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 18:31:55,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 18:31:55,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 18:31:55,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 18:31:55,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:31:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 18:31:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 18:31:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-28 18:31:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 18:31:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 18:31:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-28 18:31:55,733 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-28 18:31:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-28 18:31:55,733 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-28 18:31:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-28 18:31:55,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-28 18:31:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-11-28 18:31:55,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-11-28 18:31:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-28 18:31:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 18:31:55,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 18:31:55,736 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-28 18:31:56,092 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 18:31:56,093 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 18:31:56,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:31:56 BoogieIcfgContainer [2019-11-28 18:31:56,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 18:31:56,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 18:31:56,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 18:31:56,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 18:31:56,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:31:54" (1/3) ... [2019-11-28 18:31:56,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51bb7bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:31:56, skipping insertion in model container [2019-11-28 18:31:56,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:31:55" (2/3) ... [2019-11-28 18:31:56,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51bb7bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:31:56, skipping insertion in model container [2019-11-28 18:31:56,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:31:56" (3/3) ... [2019-11-28 18:31:56,103 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_pso.opt.i [2019-11-28 18:31:56,113 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-28 18:31:56,113 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 18:31:56,121 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 18:31:56,122 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-11-28 18:31:56,153 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,154 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,154 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,154 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,155 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,155 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,155 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,156 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,156 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,156 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,157 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,157 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,157 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,158 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,158 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,158 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,158 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,159 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,159 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,160 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,160 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,160 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,160 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,161 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:31:56,199 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-28 18:31:56,217 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 18:31:56,217 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 18:31:56,218 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 18:31:56,218 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 18:31:56,218 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 18:31:56,218 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 18:31:56,218 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 18:31:56,218 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 18:31:56,232 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 65 transitions [2019-11-28 18:31:56,234 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 77 places, 65 transitions [2019-11-28 18:31:56,281 INFO L134 PetriNetUnfolder]: 1/61 cut-off events. [2019-11-28 18:31:56,281 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:31:56,290 INFO L76 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 61 events. 1/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs. 12/71 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-11-28 18:31:56,294 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 77 places, 65 transitions [2019-11-28 18:31:56,314 INFO L134 PetriNetUnfolder]: 1/61 cut-off events. [2019-11-28 18:31:56,315 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:31:56,316 INFO L76 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 61 events. 1/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs. 12/71 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-11-28 18:31:56,319 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 732 [2019-11-28 18:31:56,320 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-11-28 18:31:57,791 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-11-28 18:31:57,974 INFO L206 etLargeBlockEncoding]: Checked pairs total: 687 [2019-11-28 18:31:57,976 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2019-11-28 18:31:57,982 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 21 transitions [2019-11-28 18:31:58,023 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 110 states. [2019-11-28 18:31:58,027 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2019-11-28 18:31:58,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 18:31:58,050 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:31:58,052 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:31:58,053 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:31:58,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:31:58,064 INFO L82 PathProgramCache]: Analyzing trace with hash -162708018, now seen corresponding path program 1 times [2019-11-28 18:31:58,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:31:58,076 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726113196] [2019-11-28 18:31:58,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:31:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:31:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:31:58,455 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726113196] [2019-11-28 18:31:58,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:31:58,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:31:58,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849705749] [2019-11-28 18:31:58,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:31:58,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:31:58,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:31:58,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:31:58,486 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 4 states. [2019-11-28 18:31:58,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:31:58,569 INFO L93 Difference]: Finished difference Result 122 states and 301 transitions. [2019-11-28 18:31:58,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:31:58,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 18:31:58,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:31:58,587 INFO L225 Difference]: With dead ends: 122 [2019-11-28 18:31:58,587 INFO L226 Difference]: Without dead ends: 76 [2019-11-28 18:31:58,591 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:31:58,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-11-28 18:31:58,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2019-11-28 18:31:58,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-28 18:31:58,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 182 transitions. [2019-11-28 18:31:58,645 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 182 transitions. Word has length 10 [2019-11-28 18:31:58,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:31:58,647 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 182 transitions. [2019-11-28 18:31:58,647 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:31:58,648 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 182 transitions. [2019-11-28 18:31:58,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 18:31:58,649 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:31:58,650 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:31:58,650 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:31:58,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:31:58,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1102272548, now seen corresponding path program 1 times [2019-11-28 18:31:58,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:31:58,652 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971227232] [2019-11-28 18:31:58,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:31:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:31:58,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:31:58,789 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971227232] [2019-11-28 18:31:58,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:31:58,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:31:58,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921151569] [2019-11-28 18:31:58,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:31:58,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:31:58,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:31:58,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:31:58,796 INFO L87 Difference]: Start difference. First operand 76 states and 182 transitions. Second operand 5 states. [2019-11-28 18:31:58,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:31:58,885 INFO L93 Difference]: Finished difference Result 83 states and 182 transitions. [2019-11-28 18:31:58,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:31:58,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 18:31:58,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:31:58,891 INFO L225 Difference]: With dead ends: 83 [2019-11-28 18:31:58,891 INFO L226 Difference]: Without dead ends: 68 [2019-11-28 18:31:58,894 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-28 18:31:58,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-28 18:31:58,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-11-28 18:31:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-28 18:31:58,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 150 transitions. [2019-11-28 18:31:58,916 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 150 transitions. Word has length 11 [2019-11-28 18:31:58,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:31:58,917 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 150 transitions. [2019-11-28 18:31:58,917 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:31:58,917 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 150 transitions. [2019-11-28 18:31:58,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 18:31:58,920 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:31:58,920 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:31:58,921 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:31:58,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:31:58,922 INFO L82 PathProgramCache]: Analyzing trace with hash -11530752, now seen corresponding path program 1 times [2019-11-28 18:31:58,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:31:58,922 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137484982] [2019-11-28 18:31:58,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:31:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:31:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:31:59,080 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137484982] [2019-11-28 18:31:59,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:31:59,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 18:31:59,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776477462] [2019-11-28 18:31:59,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 18:31:59,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:31:59,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 18:31:59,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 18:31:59,082 INFO L87 Difference]: Start difference. First operand 68 states and 150 transitions. Second operand 6 states. [2019-11-28 18:31:59,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:31:59,223 INFO L93 Difference]: Finished difference Result 67 states and 136 transitions. [2019-11-28 18:31:59,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 18:31:59,225 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-28 18:31:59,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:31:59,226 INFO L225 Difference]: With dead ends: 67 [2019-11-28 18:31:59,226 INFO L226 Difference]: Without dead ends: 56 [2019-11-28 18:31:59,227 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-28 18:31:59,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-28 18:31:59,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-11-28 18:31:59,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-28 18:31:59,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2019-11-28 18:31:59,241 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 12 [2019-11-28 18:31:59,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:31:59,242 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2019-11-28 18:31:59,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 18:31:59,242 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2019-11-28 18:31:59,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 18:31:59,243 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:31:59,243 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:31:59,243 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:31:59,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:31:59,244 INFO L82 PathProgramCache]: Analyzing trace with hash -349293673, now seen corresponding path program 1 times [2019-11-28 18:31:59,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:31:59,244 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692875063] [2019-11-28 18:31:59,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:31:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:31:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:31:59,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692875063] [2019-11-28 18:31:59,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:31:59,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 18:31:59,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620613395] [2019-11-28 18:31:59,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 18:31:59,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:31:59,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 18:31:59,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-28 18:31:59,379 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 7 states. [2019-11-28 18:31:59,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:31:59,483 INFO L93 Difference]: Finished difference Result 53 states and 106 transitions. [2019-11-28 18:31:59,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 18:31:59,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-11-28 18:31:59,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:31:59,485 INFO L225 Difference]: With dead ends: 53 [2019-11-28 18:31:59,485 INFO L226 Difference]: Without dead ends: 48 [2019-11-28 18:31:59,485 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-28 18:31:59,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-28 18:31:59,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-11-28 18:31:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-28 18:31:59,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 98 transitions. [2019-11-28 18:31:59,491 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 98 transitions. Word has length 13 [2019-11-28 18:31:59,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:31:59,491 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 98 transitions. [2019-11-28 18:31:59,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 18:31:59,492 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 98 transitions. [2019-11-28 18:31:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:31:59,493 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:31:59,493 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:31:59,493 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:31:59,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:31:59,494 INFO L82 PathProgramCache]: Analyzing trace with hash 2056881420, now seen corresponding path program 1 times [2019-11-28 18:31:59,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:31:59,494 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644953900] [2019-11-28 18:31:59,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:31:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:31:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:31:59,628 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644953900] [2019-11-28 18:31:59,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:31:59,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:31:59,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964410418] [2019-11-28 18:31:59,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:31:59,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:31:59,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:31:59,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:31:59,631 INFO L87 Difference]: Start difference. First operand 48 states and 98 transitions. Second operand 5 states. [2019-11-28 18:31:59,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:31:59,656 INFO L93 Difference]: Finished difference Result 53 states and 103 transitions. [2019-11-28 18:31:59,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:31:59,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-28 18:31:59,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:31:59,661 INFO L225 Difference]: With dead ends: 53 [2019-11-28 18:31:59,661 INFO L226 Difference]: Without dead ends: 30 [2019-11-28 18:31:59,661 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 18:31:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-28 18:31:59,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-28 18:31:59,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 18:31:59,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 48 transitions. [2019-11-28 18:31:59,665 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 48 transitions. Word has length 14 [2019-11-28 18:31:59,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:31:59,665 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 48 transitions. [2019-11-28 18:31:59,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:31:59,665 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 48 transitions. [2019-11-28 18:31:59,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:31:59,666 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:31:59,666 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:31:59,666 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:31:59,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:31:59,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1378905044, now seen corresponding path program 2 times [2019-11-28 18:31:59,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:31:59,667 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939486891] [2019-11-28 18:31:59,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:31:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:31:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:31:59,769 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939486891] [2019-11-28 18:31:59,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:31:59,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:31:59,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107263372] [2019-11-28 18:31:59,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:31:59,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:31:59,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:31:59,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:31:59,771 INFO L87 Difference]: Start difference. First operand 30 states and 48 transitions. Second operand 4 states. [2019-11-28 18:31:59,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:31:59,799 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2019-11-28 18:31:59,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:31:59,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 18:31:59,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:31:59,800 INFO L225 Difference]: With dead ends: 33 [2019-11-28 18:31:59,800 INFO L226 Difference]: Without dead ends: 27 [2019-11-28 18:31:59,801 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:31:59,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-28 18:31:59,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-11-28 18:31:59,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 18:31:59,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-11-28 18:31:59,804 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 14 [2019-11-28 18:31:59,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:31:59,804 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-11-28 18:31:59,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:31:59,804 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-11-28 18:31:59,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:31:59,805 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:31:59,805 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:31:59,805 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:31:59,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:31:59,806 INFO L82 PathProgramCache]: Analyzing trace with hash -549919962, now seen corresponding path program 3 times [2019-11-28 18:31:59,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:31:59,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481971316] [2019-11-28 18:31:59,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:31:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:31:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:31:59,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481971316] [2019-11-28 18:31:59,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:31:59,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:31:59,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607205407] [2019-11-28 18:31:59,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:31:59,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:31:59,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:31:59,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:31:59,873 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 4 states. [2019-11-28 18:31:59,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:31:59,894 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2019-11-28 18:31:59,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:31:59,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 18:31:59,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:31:59,896 INFO L225 Difference]: With dead ends: 30 [2019-11-28 18:31:59,896 INFO L226 Difference]: Without dead ends: 19 [2019-11-28 18:31:59,896 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:31:59,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-28 18:31:59,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2019-11-28 18:31:59,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 18:31:59,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-28 18:31:59,899 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 14 [2019-11-28 18:31:59,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:31:59,899 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-28 18:31:59,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:31:59,899 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-28 18:31:59,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:31:59,900 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:31:59,900 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:31:59,900 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:31:59,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:31:59,901 INFO L82 PathProgramCache]: Analyzing trace with hash 2103109014, now seen corresponding path program 4 times [2019-11-28 18:31:59,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:31:59,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984699542] [2019-11-28 18:31:59,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:31:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:31:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:31:59,965 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984699542] [2019-11-28 18:31:59,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:31:59,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:31:59,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210796211] [2019-11-28 18:31:59,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:31:59,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:31:59,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:31:59,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:31:59,967 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2019-11-28 18:31:59,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:31:59,980 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2019-11-28 18:31:59,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:31:59,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-28 18:31:59,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:31:59,981 INFO L225 Difference]: With dead ends: 17 [2019-11-28 18:31:59,981 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 18:31:59,982 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 18:31:59,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 18:31:59,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 18:31:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 18:31:59,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 18:31:59,983 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-11-28 18:31:59,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:31:59,983 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 18:31:59,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:31:59,983 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 18:31:59,983 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 18:31:59,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:31:59 BasicIcfg [2019-11-28 18:31:59,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 18:31:59,988 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 18:31:59,988 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 18:31:59,988 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 18:31:59,989 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:31:56" (3/4) ... [2019-11-28 18:31:59,993 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 18:32:00,000 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-28 18:32:00,000 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-28 18:32:00,001 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-28 18:32:00,001 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-11-28 18:32:00,006 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-28 18:32:00,006 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 18:32:00,007 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 18:32:00,058 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 18:32:00,058 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 18:32:00,060 INFO L168 Benchmark]: Toolchain (without parser) took 5258.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.3 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -133.3 MB). Peak memory consumption was 68.0 MB. Max. memory is 11.5 GB. [2019-11-28 18:32:00,061 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:32:00,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 785.83 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -116.7 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2019-11-28 18:32:00,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.06 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:32:00,062 INFO L168 Benchmark]: Boogie Preprocessor took 27.01 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:32:00,063 INFO L168 Benchmark]: RCFGBuilder took 430.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2019-11-28 18:32:00,064 INFO L168 Benchmark]: TraceAbstraction took 3892.46 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 86.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -49.7 MB). Peak memory consumption was 36.9 MB. Max. memory is 11.5 GB. [2019-11-28 18:32:00,064 INFO L168 Benchmark]: Witness Printer took 70.38 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: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. [2019-11-28 18:32:00,067 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 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 785.83 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -116.7 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.06 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.01 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 430.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3892.46 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 86.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -49.7 MB). Peak memory consumption was 36.9 MB. Max. memory is 11.5 GB. * Witness Printer took 70.38 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: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 77 ProgramPointsBefore, 28 ProgramPointsAfterwards, 65 TransitionsBefore, 21 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 362 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 14 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 687 CheckedPairsTotal, 54 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 65 locations, 1 error locations. Result: SAFE, OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 94 SDtfs, 181 SDslu, 103 SDs, 0 SdLazy, 108 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 5548 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...