./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-lit/qw2004-2.i --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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-lit/qw2004-2.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 ab7e7f2ca8b7089c8f939f9a52a987e511d5449d ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 21:49:38,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 21:49:38,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 21:49:38,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 21:49:38,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 21:49:38,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 21:49:38,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 21:49:38,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 21:49:38,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 21:49:38,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 21:49:38,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 21:49:38,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 21:49:38,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 21:49:38,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 21:49:38,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 21:49:38,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 21:49:38,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 21:49:38,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 21:49:38,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 21:49:38,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 21:49:38,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 21:49:38,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 21:49:38,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 21:49:38,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 21:49:38,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 21:49:38,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 21:49:38,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 21:49:38,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 21:49:38,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 21:49:38,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 21:49:38,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 21:49:38,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 21:49:38,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 21:49:38,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 21:49:38,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 21:49:38,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 21:49:38,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 21:49:38,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 21:49:38,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 21:49:38,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 21:49:38,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 21:49:38,122 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 21:49:38,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 21:49:38,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 21:49:38,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 21:49:38,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 21:49:38,139 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 21:49:38,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 21:49:38,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 21:49:38,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 21:49:38,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 21:49:38,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 21:49:38,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 21:49:38,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 21:49:38,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 21:49:38,142 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 21:49:38,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 21:49:38,143 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 21:49:38,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 21:49:38,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 21:49:38,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 21:49:38,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 21:49:38,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 21:49:38,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 21:49:38,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 21:49:38,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 21:49:38,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 21:49:38,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 21:49:38,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 21:49:38,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 21:49:38,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 21:49:38,147 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 -> ab7e7f2ca8b7089c8f939f9a52a987e511d5449d [2020-07-28 21:49:38,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 21:49:38,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 21:49:38,491 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 21:49:38,497 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 21:49:38,499 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 21:49:38,501 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/qw2004-2.i [2020-07-28 21:49:38,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b81bb7508/eafc92d7e5144894845af1cc3668d7fa/FLAGfa3213036 [2020-07-28 21:49:39,203 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 21:49:39,205 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/qw2004-2.i [2020-07-28 21:49:39,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b81bb7508/eafc92d7e5144894845af1cc3668d7fa/FLAGfa3213036 [2020-07-28 21:49:39,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b81bb7508/eafc92d7e5144894845af1cc3668d7fa [2020-07-28 21:49:39,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 21:49:39,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 21:49:39,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 21:49:39,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 21:49:39,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 21:49:39,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 09:49:39" (1/1) ... [2020-07-28 21:49:39,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee44997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 09:49:39, skipping insertion in model container [2020-07-28 21:49:39,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 09:49:39" (1/1) ... [2020-07-28 21:49:39,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 21:49:39,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 21:49:40,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 21:49:40,133 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 21:49:40,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 21:49:40,312 INFO L208 MainTranslator]: Completed translation [2020-07-28 21:49:40,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 09:49:40 WrapperNode [2020-07-28 21:49:40,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 21:49:40,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 21:49:40,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 21:49:40,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 21:49:40,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 09:49:40" (1/1) ... [2020-07-28 21:49:40,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 09:49:40" (1/1) ... [2020-07-28 21:49:40,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 21:49:40,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 21:49:40,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 21:49:40,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 21:49:40,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 09:49:40" (1/1) ... [2020-07-28 21:49:40,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 09:49:40" (1/1) ... [2020-07-28 21:49:40,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 09:49:40" (1/1) ... [2020-07-28 21:49:40,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 09:49:40" (1/1) ... [2020-07-28 21:49:40,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 09:49:40" (1/1) ... [2020-07-28 21:49:40,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 09:49:40" (1/1) ... [2020-07-28 21:49:40,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 09:49:40" (1/1) ... [2020-07-28 21:49:40,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 21:49:40,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 21:49:40,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 21:49:40,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 21:49:40,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 09:49:40" (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 [2020-07-28 21:49:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-07-28 21:49:40,520 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-07-28 21:49:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 21:49:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-07-28 21:49:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 21:49:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 21:49:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-07-28 21:49:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 21:49:40,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 21:49:40,524 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-07-28 21:49:41,113 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 21:49:41,114 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-07-28 21:49:41,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 09:49:41 BoogieIcfgContainer [2020-07-28 21:49:41,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 21:49:41,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 21:49:41,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 21:49:41,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 21:49:41,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 09:49:39" (1/3) ... [2020-07-28 21:49:41,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0d6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 09:49:41, skipping insertion in model container [2020-07-28 21:49:41,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 09:49:40" (2/3) ... [2020-07-28 21:49:41,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0d6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 09:49:41, skipping insertion in model container [2020-07-28 21:49:41,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 09:49:41" (3/3) ... [2020-07-28 21:49:41,127 INFO L109 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2020-07-28 21:49:41,139 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-07-28 21:49:41,139 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 21:49:41,148 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 21:49:41,149 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-07-28 21:49:41,180 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,181 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,181 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,181 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,182 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,182 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,182 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,183 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,183 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,183 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,184 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,184 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,184 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,185 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,185 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,185 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,186 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,186 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,186 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,186 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,187 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,187 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,187 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,188 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,188 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,188 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,189 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,189 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,189 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,190 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,193 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,194 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,194 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,194 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,195 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,195 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,195 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,195 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,196 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,196 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,196 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-07-28 21:49:41,213 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-28 21:49:41,235 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 21:49:41,236 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 21:49:41,236 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 21:49:41,236 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 21:49:41,237 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 21:49:41,237 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 21:49:41,237 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 21:49:41,237 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 21:49:41,255 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 87 transitions, 179 flow [2020-07-28 21:49:41,258 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 87 transitions, 179 flow [2020-07-28 21:49:41,307 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2020-07-28 21:49:41,307 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-07-28 21:49:41,314 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 6/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2020-07-28 21:49:41,319 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 87 transitions, 179 flow [2020-07-28 21:49:41,344 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2020-07-28 21:49:41,344 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-07-28 21:49:41,346 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 6/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2020-07-28 21:49:41,349 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2208 [2020-07-28 21:49:41,351 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-07-28 21:49:44,549 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2663 [2020-07-28 21:49:44,549 INFO L214 etLargeBlockEncoding]: Total number of compositions: 94 [2020-07-28 21:49:44,553 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 17 transitions, 39 flow [2020-07-28 21:49:44,563 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-07-28 21:49:44,565 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-07-28 21:49:44,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-28 21:49:44,572 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 21:49:44,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-28 21:49:44,573 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 21:49:44,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 21:49:44,580 INFO L82 PathProgramCache]: Analyzing trace with hash 11055550, now seen corresponding path program 1 times [2020-07-28 21:49:44,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 21:49:44,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972002794] [2020-07-28 21:49:44,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 21:49:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 21:49:44,758 INFO L280 TraceCheckUtils]: 0: Hoare triple {176#true} [332] ULTIMATE.startENTRY-->L734-1: Formula: (let ((.cse0 (store |v_#valid_51| 0 0))) (and (= 0 v_~stoppingFlag~0_49) (= 0 |v_#NULL.base_5|) (= |v_#valid_50| (store .cse0 |v_ULTIMATE.start_main_~#t~0.base_40| 1)) (< 0 |v_#StackHeapBarrier_10|) (< |v_#StackHeapBarrier_10| |v_ULTIMATE.start_main_~#t~0.base_40|) (= v_~pendingIo~0_132 1) (= 0 |v_#NULL.offset_5|) (= v_~stoppingEvent~0_66 0) (= (store |v_#length_12| |v_ULTIMATE.start_main_~#t~0.base_40| 4) |v_#length_11|) (= (store |v_#memory_int_6| |v_ULTIMATE.start_main_~#t~0.base_40| (store (select |v_#memory_int_6| |v_ULTIMATE.start_main_~#t~0.base_40|) |v_ULTIMATE.start_main_~#t~0.offset_26| 0)) |v_#memory_int_5|) (= |v_ULTIMATE.start_main_~#t~0.offset_26| 0) (= 0 v_~stopped~0_38) (= 0 (select .cse0 |v_ULTIMATE.start_main_~#t~0.base_40|)))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_10|, #valid=|v_#valid_51|, #memory_int=|v_#memory_int_6|, #length=|v_#length_12|} OutVars{ULTIMATE.start_main_#t~ret6.base=|v_ULTIMATE.start_main_#t~ret6.base_29|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_11|, ~stoppingFlag~0=v_~stoppingFlag~0_49, ULTIMATE.start_main_#t~ret6.offset=|v_ULTIMATE.start_main_#t~ret6.offset_29|, ~stopped~0=v_~stopped~0_38, #NULL.offset=|v_#NULL.offset_5|, ULTIMATE.start_main_~#t~0.offset=|v_ULTIMATE.start_main_~#t~0.offset_26|, #NULL.base=|v_#NULL.base_5|, ~pendingIo~0=v_~pendingIo~0_132, ~stoppingEvent~0=v_~stoppingEvent~0_66, #StackHeapBarrier=|v_#StackHeapBarrier_10|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_23|, #valid=|v_#valid_50|, #memory_int=|v_#memory_int_5|, ULTIMATE.start_main_~#t~0.base=|v_ULTIMATE.start_main_~#t~0.base_40|, #length=|v_#length_11|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret6.base, ULTIMATE.start_main_#t~nondet5, ~stoppingFlag~0, ULTIMATE.start_main_#t~ret6.offset, ~stopped~0, #NULL.offset, ULTIMATE.start_main_~#t~0.offset, #NULL.base, ~pendingIo~0, ~stoppingEvent~0, ULTIMATE.start_main_#res, #valid, #memory_int, ULTIMATE.start_main_~#t~0.base, #length] {178#(= 0 ~stoppingFlag~0)} is VALID [2020-07-28 21:49:44,759 INFO L280 TraceCheckUtils]: 1: Hoare triple {178#(= 0 ~stoppingFlag~0)} [240] L734-1-->BCSP_PnpStopENTRY: Formula: (and (= 0 |v_BCSP_PnpStopThread1of1ForFork0_#in~arg.base_3|) (= v_BCSP_PnpStopThread1of1ForFork0_thidvar0_2 0) (= 0 |v_BCSP_PnpStopThread1of1ForFork0_#in~arg.offset_3|)) InVars {} OutVars{BCSP_PnpStopThread1of1ForFork0_thidvar0=v_BCSP_PnpStopThread1of1ForFork0_thidvar0_2, BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0=v_BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0_5, BCSP_PnpStopThread1of1ForFork0_dec_#res=|v_BCSP_PnpStopThread1of1ForFork0_dec_#res_5|, BCSP_PnpStopThread1of1ForFork0_#in~arg.offset=|v_BCSP_PnpStopThread1of1ForFork0_#in~arg.offset_3|, BCSP_PnpStopThread1of1ForFork0_~arg.offset=v_BCSP_PnpStopThread1of1ForFork0_~arg.offset_3, BCSP_PnpStopThread1of1ForFork0_dec_#t~post2=|v_BCSP_PnpStopThread1of1ForFork0_dec_#t~post2_4|, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=v_BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_6, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|v_BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_4|, BCSP_PnpStopThread1of1ForFork0_~arg.base=v_BCSP_PnpStopThread1of1ForFork0_~arg.base_3, BCSP_PnpStopThread1of1ForFork0_#res.base=|v_BCSP_PnpStopThread1of1ForFork0_#res.base_3|, BCSP_PnpStopThread1of1ForFork0_#res.offset=|v_BCSP_PnpStopThread1of1ForFork0_#res.offset_3|, BCSP_PnpStopThread1of1ForFork0_#in~arg.base=|v_BCSP_PnpStopThread1of1ForFork0_#in~arg.base_3|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3=|v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3_7|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0=v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_7} AuxVars[] AssignedVars[BCSP_PnpStopThread1of1ForFork0_thidvar0, BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0, BCSP_PnpStopThread1of1ForFork0_dec_#res, BCSP_PnpStopThread1of1ForFork0_#in~arg.offset, BCSP_PnpStopThread1of1ForFork0_~arg.offset, BCSP_PnpStopThread1of1ForFork0_dec_#t~post2, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond, BCSP_PnpStopThread1of1ForFork0_~arg.base, BCSP_PnpStopThread1of1ForFork0_#res.base, BCSP_PnpStopThread1of1ForFork0_#res.offset, BCSP_PnpStopThread1of1ForFork0_#in~arg.base, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0] {178#(= 0 ~stoppingFlag~0)} is VALID [2020-07-28 21:49:44,760 INFO L280 TraceCheckUtils]: 2: Hoare triple {178#(= 0 ~stoppingFlag~0)} [337] L734-2-->L714-2: Formula: (and (= (- 1) |v_ULTIMATE.start_BCSP_IoIncrement_#res_48|) (= 0 |v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.base_17|) (= |v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_73| |v_ULTIMATE.start_BCSP_IoIncrement_#res_48|) (= v_ULTIMATE.start_BCSP_PnpAdd_~arg.base_19 |v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.base_17|) (not (= 0 v_~stoppingFlag~0_58)) (= 0 |v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset_17|) (= v_ULTIMATE.start_BCSP_PnpAdd_~arg.offset_19 |v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset_17|)) InVars {~stoppingFlag~0=v_~stoppingFlag~0_58} OutVars{ULTIMATE.start_BCSP_PnpAdd_#res.offset=|v_ULTIMATE.start_BCSP_PnpAdd_#res.offset_50|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_15|, ULTIMATE.start_BCSP_PnpAdd_~arg.base=v_ULTIMATE.start_BCSP_PnpAdd_~arg.base_19, ULTIMATE.start_BCSP_PnpAdd_#in~arg.base=|v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.base_17|, ~stoppingFlag~0=v_~stoppingFlag~0_58, ULTIMATE.start_BCSP_PnpAdd_#res.base=|v_ULTIMATE.start_BCSP_PnpAdd_#res.base_50|, ULTIMATE.start_BCSP_IoIncrement_#res=|v_ULTIMATE.start_BCSP_IoIncrement_#res_48|, ULTIMATE.start_BCSP_PnpAdd_#t~ret4=|v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_73|, ULTIMATE.start_BCSP_PnpAdd_~status~0=v_ULTIMATE.start_BCSP_PnpAdd_~status~0_67, ULTIMATE.start_BCSP_PnpAdd_~arg.offset=v_ULTIMATE.start_BCSP_PnpAdd_~arg.offset_19, ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset=|v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset_17|} AuxVars[] AssignedVars[ULTIMATE.start_BCSP_PnpAdd_#res.offset, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_BCSP_PnpAdd_~arg.base, ULTIMATE.start_BCSP_PnpAdd_#in~arg.base, ULTIMATE.start_BCSP_PnpAdd_#res.base, ULTIMATE.start_BCSP_IoIncrement_#res, ULTIMATE.start_BCSP_PnpAdd_#t~ret4, ULTIMATE.start_BCSP_PnpAdd_~status~0, ULTIMATE.start_BCSP_PnpAdd_~arg.offset, ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset] {177#false} is VALID [2020-07-28 21:49:44,761 INFO L280 TraceCheckUtils]: 3: Hoare triple {177#false} [330] L714-2-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= v_ULTIMATE.start___VERIFIER_assert_~cond_18 |v_ULTIMATE.start___VERIFIER_assert_#in~cond_17|) (= 0 v_ULTIMATE.start_BCSP_PnpAdd_~status~0_44) (not (= 0 v_~stopped~0_37)) (= 0 v_ULTIMATE.start___VERIFIER_assert_~cond_18) (= |v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_34| v_ULTIMATE.start_BCSP_PnpAdd_~status~0_44)) InVars {~stopped~0=v_~stopped~0_37, ULTIMATE.start_BCSP_PnpAdd_#t~ret4=|v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_34|} OutVars{ULTIMATE.start___VERIFIER_assert_~cond=v_ULTIMATE.start___VERIFIER_assert_~cond_18, ~stopped~0=v_~stopped~0_37, ULTIMATE.start___VERIFIER_assert_#in~cond=|v_ULTIMATE.start___VERIFIER_assert_#in~cond_17|, ULTIMATE.start_BCSP_PnpAdd_~status~0=v_ULTIMATE.start_BCSP_PnpAdd_~status~0_44, ULTIMATE.start_BCSP_PnpAdd_#t~ret4=|v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_33|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_~cond, ULTIMATE.start___VERIFIER_assert_#in~cond, ULTIMATE.start_BCSP_PnpAdd_~status~0, ULTIMATE.start_BCSP_PnpAdd_#t~ret4] {177#false} is VALID [2020-07-28 21:49:44,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 21:49:44,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972002794] [2020-07-28 21:49:44,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 21:49:44,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 21:49:44,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361057158] [2020-07-28 21:49:44,772 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-07-28 21:49:44,774 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 21:49:44,778 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-28 21:49:44,794 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 21:49:44,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-28 21:49:44,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 21:49:44,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-28 21:49:44,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 21:49:44,808 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-07-28 21:49:44,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 21:49:44,891 INFO L93 Difference]: Finished difference Result 74 states and 151 transitions. [2020-07-28 21:49:44,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-28 21:49:44,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-07-28 21:49:44,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 21:49:44,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 21:49:44,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 29 transitions. [2020-07-28 21:49:44,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 21:49:44,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 29 transitions. [2020-07-28 21:49:44,898 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 29 transitions. [2020-07-28 21:49:44,956 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 21:49:44,977 INFO L225 Difference]: With dead ends: 74 [2020-07-28 21:49:44,977 INFO L226 Difference]: Without dead ends: 41 [2020-07-28 21:49:44,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 21:49:44,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-28 21:49:45,005 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,007 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,008 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,008 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,008 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,008 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,009 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,009 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,009 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,009 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,010 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,010 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,010 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,010 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,011 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,011 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,011 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,011 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,011 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,012 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,012 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,012 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,012 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,013 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,013 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,013 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2020-07-28 21:49:45,014 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 21:49:45,015 INFO L82 GeneralOperation]: Start isEquivalent. First operand 41 states. Second operand 26 states. [2020-07-28 21:49:45,015 INFO L74 IsIncluded]: Start isIncluded. First operand 41 states. Second operand 26 states. [2020-07-28 21:49:45,016 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 26 states. [2020-07-28 21:49:45,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 21:49:45,021 INFO L93 Difference]: Finished difference Result 41 states and 74 transitions. [2020-07-28 21:49:45,021 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 74 transitions. [2020-07-28 21:49:45,022 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 21:49:45,022 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 21:49:45,022 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 41 states. [2020-07-28 21:49:45,022 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 41 states. [2020-07-28 21:49:45,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 21:49:45,027 INFO L93 Difference]: Finished difference Result 41 states and 74 transitions. [2020-07-28 21:49:45,027 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 74 transitions. [2020-07-28 21:49:45,028 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 21:49:45,028 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 21:49:45,028 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 21:49:45,028 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 21:49:45,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-28 21:49:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 49 transitions. [2020-07-28 21:49:45,033 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 49 transitions. Word has length 4 [2020-07-28 21:49:45,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 21:49:45,033 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 49 transitions. [2020-07-28 21:49:45,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-28 21:49:45,033 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 49 transitions. [2020-07-28 21:49:45,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-28 21:49:45,034 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 21:49:45,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-28 21:49:45,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 21:49:45,035 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 21:49:45,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 21:49:45,035 INFO L82 PathProgramCache]: Analyzing trace with hash 342711158, now seen corresponding path program 1 times [2020-07-28 21:49:45,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 21:49:45,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217970230] [2020-07-28 21:49:45,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 21:49:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 21:49:45,111 INFO L280 TraceCheckUtils]: 0: Hoare triple {389#true} [332] ULTIMATE.startENTRY-->L734-1: Formula: (let ((.cse0 (store |v_#valid_51| 0 0))) (and (= 0 v_~stoppingFlag~0_49) (= 0 |v_#NULL.base_5|) (= |v_#valid_50| (store .cse0 |v_ULTIMATE.start_main_~#t~0.base_40| 1)) (< 0 |v_#StackHeapBarrier_10|) (< |v_#StackHeapBarrier_10| |v_ULTIMATE.start_main_~#t~0.base_40|) (= v_~pendingIo~0_132 1) (= 0 |v_#NULL.offset_5|) (= v_~stoppingEvent~0_66 0) (= (store |v_#length_12| |v_ULTIMATE.start_main_~#t~0.base_40| 4) |v_#length_11|) (= (store |v_#memory_int_6| |v_ULTIMATE.start_main_~#t~0.base_40| (store (select |v_#memory_int_6| |v_ULTIMATE.start_main_~#t~0.base_40|) |v_ULTIMATE.start_main_~#t~0.offset_26| 0)) |v_#memory_int_5|) (= |v_ULTIMATE.start_main_~#t~0.offset_26| 0) (= 0 v_~stopped~0_38) (= 0 (select .cse0 |v_ULTIMATE.start_main_~#t~0.base_40|)))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_10|, #valid=|v_#valid_51|, #memory_int=|v_#memory_int_6|, #length=|v_#length_12|} OutVars{ULTIMATE.start_main_#t~ret6.base=|v_ULTIMATE.start_main_#t~ret6.base_29|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_11|, ~stoppingFlag~0=v_~stoppingFlag~0_49, ULTIMATE.start_main_#t~ret6.offset=|v_ULTIMATE.start_main_#t~ret6.offset_29|, ~stopped~0=v_~stopped~0_38, #NULL.offset=|v_#NULL.offset_5|, ULTIMATE.start_main_~#t~0.offset=|v_ULTIMATE.start_main_~#t~0.offset_26|, #NULL.base=|v_#NULL.base_5|, ~pendingIo~0=v_~pendingIo~0_132, ~stoppingEvent~0=v_~stoppingEvent~0_66, #StackHeapBarrier=|v_#StackHeapBarrier_10|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_23|, #valid=|v_#valid_50|, #memory_int=|v_#memory_int_5|, ULTIMATE.start_main_~#t~0.base=|v_ULTIMATE.start_main_~#t~0.base_40|, #length=|v_#length_11|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret6.base, ULTIMATE.start_main_#t~nondet5, ~stoppingFlag~0, ULTIMATE.start_main_#t~ret6.offset, ~stopped~0, #NULL.offset, ULTIMATE.start_main_~#t~0.offset, #NULL.base, ~pendingIo~0, ~stoppingEvent~0, ULTIMATE.start_main_#res, #valid, #memory_int, ULTIMATE.start_main_~#t~0.base, #length] {391#(= 0 ~stopped~0)} is VALID [2020-07-28 21:49:45,112 INFO L280 TraceCheckUtils]: 1: Hoare triple {391#(= 0 ~stopped~0)} [240] L734-1-->BCSP_PnpStopENTRY: Formula: (and (= 0 |v_BCSP_PnpStopThread1of1ForFork0_#in~arg.base_3|) (= v_BCSP_PnpStopThread1of1ForFork0_thidvar0_2 0) (= 0 |v_BCSP_PnpStopThread1of1ForFork0_#in~arg.offset_3|)) InVars {} OutVars{BCSP_PnpStopThread1of1ForFork0_thidvar0=v_BCSP_PnpStopThread1of1ForFork0_thidvar0_2, BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0=v_BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0_5, BCSP_PnpStopThread1of1ForFork0_dec_#res=|v_BCSP_PnpStopThread1of1ForFork0_dec_#res_5|, BCSP_PnpStopThread1of1ForFork0_#in~arg.offset=|v_BCSP_PnpStopThread1of1ForFork0_#in~arg.offset_3|, BCSP_PnpStopThread1of1ForFork0_~arg.offset=v_BCSP_PnpStopThread1of1ForFork0_~arg.offset_3, BCSP_PnpStopThread1of1ForFork0_dec_#t~post2=|v_BCSP_PnpStopThread1of1ForFork0_dec_#t~post2_4|, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=v_BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_6, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|v_BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_4|, BCSP_PnpStopThread1of1ForFork0_~arg.base=v_BCSP_PnpStopThread1of1ForFork0_~arg.base_3, BCSP_PnpStopThread1of1ForFork0_#res.base=|v_BCSP_PnpStopThread1of1ForFork0_#res.base_3|, BCSP_PnpStopThread1of1ForFork0_#res.offset=|v_BCSP_PnpStopThread1of1ForFork0_#res.offset_3|, BCSP_PnpStopThread1of1ForFork0_#in~arg.base=|v_BCSP_PnpStopThread1of1ForFork0_#in~arg.base_3|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3=|v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3_7|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0=v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_7} AuxVars[] AssignedVars[BCSP_PnpStopThread1of1ForFork0_thidvar0, BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0, BCSP_PnpStopThread1of1ForFork0_dec_#res, BCSP_PnpStopThread1of1ForFork0_#in~arg.offset, BCSP_PnpStopThread1of1ForFork0_~arg.offset, BCSP_PnpStopThread1of1ForFork0_dec_#t~post2, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond, BCSP_PnpStopThread1of1ForFork0_~arg.base, BCSP_PnpStopThread1of1ForFork0_#res.base, BCSP_PnpStopThread1of1ForFork0_#res.offset, BCSP_PnpStopThread1of1ForFork0_#in~arg.base, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0] {391#(= 0 ~stopped~0)} is VALID [2020-07-28 21:49:45,113 INFO L280 TraceCheckUtils]: 2: Hoare triple {391#(= 0 ~stopped~0)} [326] L734-2-->L694: Formula: (and (= 0 |v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.base_9|) (= 0 v_~stoppingFlag~0_44) (= v_ULTIMATE.start_BCSP_PnpAdd_~arg.offset_9 |v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset_9|) (= v_ULTIMATE.start_BCSP_PnpAdd_~arg.base_9 |v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.base_9|) (= 0 |v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset_9|)) InVars {~stoppingFlag~0=v_~stoppingFlag~0_44} OutVars{ULTIMATE.start_BCSP_PnpAdd_#res.offset=|v_ULTIMATE.start_BCSP_PnpAdd_#res.offset_32|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_7|, ULTIMATE.start_BCSP_PnpAdd_~arg.base=v_ULTIMATE.start_BCSP_PnpAdd_~arg.base_9, ULTIMATE.start_BCSP_PnpAdd_#in~arg.base=|v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.base_9|, ~stoppingFlag~0=v_~stoppingFlag~0_44, ULTIMATE.start_BCSP_PnpAdd_#res.base=|v_ULTIMATE.start_BCSP_PnpAdd_#res.base_32|, ULTIMATE.start_BCSP_IoIncrement_#res=|v_ULTIMATE.start_BCSP_IoIncrement_#res_38|, ULTIMATE.start_BCSP_PnpAdd_~status~0=v_ULTIMATE.start_BCSP_PnpAdd_~status~0_41, ULTIMATE.start_BCSP_PnpAdd_~arg.offset=v_ULTIMATE.start_BCSP_PnpAdd_~arg.offset_9, ULTIMATE.start_BCSP_PnpAdd_#t~ret4=|v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_30|, ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset=|v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset_9|} AuxVars[] AssignedVars[ULTIMATE.start_BCSP_PnpAdd_#res.offset, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_BCSP_PnpAdd_~arg.base, ULTIMATE.start_BCSP_PnpAdd_#in~arg.base, ULTIMATE.start_BCSP_PnpAdd_#res.base, ULTIMATE.start_BCSP_IoIncrement_#res, ULTIMATE.start_BCSP_PnpAdd_~status~0, ULTIMATE.start_BCSP_PnpAdd_~arg.offset, ULTIMATE.start_BCSP_PnpAdd_#t~ret4, ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset] {391#(= 0 ~stopped~0)} is VALID [2020-07-28 21:49:45,113 INFO L280 TraceCheckUtils]: 3: Hoare triple {391#(= 0 ~stopped~0)} [309] L694-->L714-2: Formula: (and (= v_~pendingIo~0_93 (+ v_~pendingIo~0_94 1)) (= |v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_20| |v_ULTIMATE.start_BCSP_IoIncrement_#res_28|) (= 0 |v_ULTIMATE.start_BCSP_IoIncrement_#res_28|)) InVars {~pendingIo~0=v_~pendingIo~0_94} OutVars{ULTIMATE.start_BCSP_IoIncrement_#res=|v_ULTIMATE.start_BCSP_IoIncrement_#res_28|, ULTIMATE.start_BCSP_PnpAdd_#t~ret4=|v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_20|, ~pendingIo~0=v_~pendingIo~0_93} AuxVars[] AssignedVars[ULTIMATE.start_BCSP_IoIncrement_#res, ULTIMATE.start_BCSP_PnpAdd_#t~ret4, ~pendingIo~0] {391#(= 0 ~stopped~0)} is VALID [2020-07-28 21:49:45,114 INFO L280 TraceCheckUtils]: 4: Hoare triple {391#(= 0 ~stopped~0)} [330] L714-2-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= v_ULTIMATE.start___VERIFIER_assert_~cond_18 |v_ULTIMATE.start___VERIFIER_assert_#in~cond_17|) (= 0 v_ULTIMATE.start_BCSP_PnpAdd_~status~0_44) (not (= 0 v_~stopped~0_37)) (= 0 v_ULTIMATE.start___VERIFIER_assert_~cond_18) (= |v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_34| v_ULTIMATE.start_BCSP_PnpAdd_~status~0_44)) InVars {~stopped~0=v_~stopped~0_37, ULTIMATE.start_BCSP_PnpAdd_#t~ret4=|v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_34|} OutVars{ULTIMATE.start___VERIFIER_assert_~cond=v_ULTIMATE.start___VERIFIER_assert_~cond_18, ~stopped~0=v_~stopped~0_37, ULTIMATE.start___VERIFIER_assert_#in~cond=|v_ULTIMATE.start___VERIFIER_assert_#in~cond_17|, ULTIMATE.start_BCSP_PnpAdd_~status~0=v_ULTIMATE.start_BCSP_PnpAdd_~status~0_44, ULTIMATE.start_BCSP_PnpAdd_#t~ret4=|v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_33|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_~cond, ULTIMATE.start___VERIFIER_assert_#in~cond, ULTIMATE.start_BCSP_PnpAdd_~status~0, ULTIMATE.start_BCSP_PnpAdd_#t~ret4] {390#false} is VALID [2020-07-28 21:49:45,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 21:49:45,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217970230] [2020-07-28 21:49:45,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 21:49:45,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-07-28 21:49:45,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846650092] [2020-07-28 21:49:45,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-07-28 21:49:45,116 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 21:49:45,116 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-28 21:49:45,126 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 21:49:45,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-28 21:49:45,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 21:49:45,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-28 21:49:45,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 21:49:45,127 INFO L87 Difference]: Start difference. First operand 26 states and 49 transitions. Second operand 3 states. [2020-07-28 21:49:45,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 21:49:45,161 INFO L93 Difference]: Finished difference Result 21 states and 38 transitions. [2020-07-28 21:49:45,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-28 21:49:45,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-07-28 21:49:45,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 21:49:45,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 21:49:45,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2020-07-28 21:49:45,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 21:49:45,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2020-07-28 21:49:45,163 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 16 transitions. [2020-07-28 21:49:45,186 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 21:49:45,187 INFO L225 Difference]: With dead ends: 21 [2020-07-28 21:49:45,187 INFO L226 Difference]: Without dead ends: 21 [2020-07-28 21:49:45,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 21:49:45,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-28 21:49:45,190 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,190 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,190 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,190 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,191 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,191 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,191 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,191 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,192 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,192 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,192 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,192 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,192 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,193 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,193 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,193 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,194 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,194 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,194 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,194 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,194 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-28 21:49:45,195 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 21:49:45,195 INFO L82 GeneralOperation]: Start isEquivalent. First operand 21 states. Second operand 21 states. [2020-07-28 21:49:45,195 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 21 states. [2020-07-28 21:49:45,196 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 21 states. [2020-07-28 21:49:45,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 21:49:45,198 INFO L93 Difference]: Finished difference Result 21 states and 38 transitions. [2020-07-28 21:49:45,198 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 38 transitions. [2020-07-28 21:49:45,198 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 21:49:45,198 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 21:49:45,199 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 21 states. [2020-07-28 21:49:45,199 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 21 states. [2020-07-28 21:49:45,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 21:49:45,201 INFO L93 Difference]: Finished difference Result 21 states and 38 transitions. [2020-07-28 21:49:45,201 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 38 transitions. [2020-07-28 21:49:45,202 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 21:49:45,202 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 21:49:45,202 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 21:49:45,202 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 21:49:45,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-28 21:49:45,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 38 transitions. [2020-07-28 21:49:45,204 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 38 transitions. Word has length 5 [2020-07-28 21:49:45,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 21:49:45,204 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 38 transitions. [2020-07-28 21:49:45,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-28 21:49:45,205 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 38 transitions. [2020-07-28 21:49:45,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-28 21:49:45,205 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 21:49:45,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-28 21:49:45,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 21:49:45,206 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 21:49:45,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 21:49:45,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1391157156, now seen corresponding path program 1 times [2020-07-28 21:49:45,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 21:49:45,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391612820] [2020-07-28 21:49:45,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 21:49:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 21:49:45,273 INFO L280 TraceCheckUtils]: 0: Hoare triple {499#true} [332] ULTIMATE.startENTRY-->L734-1: Formula: (let ((.cse0 (store |v_#valid_51| 0 0))) (and (= 0 v_~stoppingFlag~0_49) (= 0 |v_#NULL.base_5|) (= |v_#valid_50| (store .cse0 |v_ULTIMATE.start_main_~#t~0.base_40| 1)) (< 0 |v_#StackHeapBarrier_10|) (< |v_#StackHeapBarrier_10| |v_ULTIMATE.start_main_~#t~0.base_40|) (= v_~pendingIo~0_132 1) (= 0 |v_#NULL.offset_5|) (= v_~stoppingEvent~0_66 0) (= (store |v_#length_12| |v_ULTIMATE.start_main_~#t~0.base_40| 4) |v_#length_11|) (= (store |v_#memory_int_6| |v_ULTIMATE.start_main_~#t~0.base_40| (store (select |v_#memory_int_6| |v_ULTIMATE.start_main_~#t~0.base_40|) |v_ULTIMATE.start_main_~#t~0.offset_26| 0)) |v_#memory_int_5|) (= |v_ULTIMATE.start_main_~#t~0.offset_26| 0) (= 0 v_~stopped~0_38) (= 0 (select .cse0 |v_ULTIMATE.start_main_~#t~0.base_40|)))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_10|, #valid=|v_#valid_51|, #memory_int=|v_#memory_int_6|, #length=|v_#length_12|} OutVars{ULTIMATE.start_main_#t~ret6.base=|v_ULTIMATE.start_main_#t~ret6.base_29|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_11|, ~stoppingFlag~0=v_~stoppingFlag~0_49, ULTIMATE.start_main_#t~ret6.offset=|v_ULTIMATE.start_main_#t~ret6.offset_29|, ~stopped~0=v_~stopped~0_38, #NULL.offset=|v_#NULL.offset_5|, ULTIMATE.start_main_~#t~0.offset=|v_ULTIMATE.start_main_~#t~0.offset_26|, #NULL.base=|v_#NULL.base_5|, ~pendingIo~0=v_~pendingIo~0_132, ~stoppingEvent~0=v_~stoppingEvent~0_66, #StackHeapBarrier=|v_#StackHeapBarrier_10|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_23|, #valid=|v_#valid_50|, #memory_int=|v_#memory_int_5|, ULTIMATE.start_main_~#t~0.base=|v_ULTIMATE.start_main_~#t~0.base_40|, #length=|v_#length_11|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret6.base, ULTIMATE.start_main_#t~nondet5, ~stoppingFlag~0, ULTIMATE.start_main_#t~ret6.offset, ~stopped~0, #NULL.offset, ULTIMATE.start_main_~#t~0.offset, #NULL.base, ~pendingIo~0, ~stoppingEvent~0, ULTIMATE.start_main_#res, #valid, #memory_int, ULTIMATE.start_main_~#t~0.base, #length] {499#true} is VALID [2020-07-28 21:49:45,273 INFO L280 TraceCheckUtils]: 1: Hoare triple {499#true} [240] L734-1-->BCSP_PnpStopENTRY: Formula: (and (= 0 |v_BCSP_PnpStopThread1of1ForFork0_#in~arg.base_3|) (= v_BCSP_PnpStopThread1of1ForFork0_thidvar0_2 0) (= 0 |v_BCSP_PnpStopThread1of1ForFork0_#in~arg.offset_3|)) InVars {} OutVars{BCSP_PnpStopThread1of1ForFork0_thidvar0=v_BCSP_PnpStopThread1of1ForFork0_thidvar0_2, BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0=v_BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0_5, BCSP_PnpStopThread1of1ForFork0_dec_#res=|v_BCSP_PnpStopThread1of1ForFork0_dec_#res_5|, BCSP_PnpStopThread1of1ForFork0_#in~arg.offset=|v_BCSP_PnpStopThread1of1ForFork0_#in~arg.offset_3|, BCSP_PnpStopThread1of1ForFork0_~arg.offset=v_BCSP_PnpStopThread1of1ForFork0_~arg.offset_3, BCSP_PnpStopThread1of1ForFork0_dec_#t~post2=|v_BCSP_PnpStopThread1of1ForFork0_dec_#t~post2_4|, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=v_BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_6, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|v_BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_4|, BCSP_PnpStopThread1of1ForFork0_~arg.base=v_BCSP_PnpStopThread1of1ForFork0_~arg.base_3, BCSP_PnpStopThread1of1ForFork0_#res.base=|v_BCSP_PnpStopThread1of1ForFork0_#res.base_3|, BCSP_PnpStopThread1of1ForFork0_#res.offset=|v_BCSP_PnpStopThread1of1ForFork0_#res.offset_3|, BCSP_PnpStopThread1of1ForFork0_#in~arg.base=|v_BCSP_PnpStopThread1of1ForFork0_#in~arg.base_3|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3=|v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3_7|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0=v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_7} AuxVars[] AssignedVars[BCSP_PnpStopThread1of1ForFork0_thidvar0, BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0, BCSP_PnpStopThread1of1ForFork0_dec_#res, BCSP_PnpStopThread1of1ForFork0_#in~arg.offset, BCSP_PnpStopThread1of1ForFork0_~arg.offset, BCSP_PnpStopThread1of1ForFork0_dec_#t~post2, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond, BCSP_PnpStopThread1of1ForFork0_~arg.base, BCSP_PnpStopThread1of1ForFork0_#res.base, BCSP_PnpStopThread1of1ForFork0_#res.offset, BCSP_PnpStopThread1of1ForFork0_#in~arg.base, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0] {499#true} is VALID [2020-07-28 21:49:45,274 INFO L280 TraceCheckUtils]: 2: Hoare triple {499#true} [299] BCSP_PnpStopENTRY-->L706: Formula: (and (= v_BCSP_PnpStopThread1of1ForFork0_~arg.offset_9 |v_BCSP_PnpStopThread1of1ForFork0_#in~arg.offset_9|) (= 1 v_~stoppingFlag~0_23) (= v_BCSP_PnpStopThread1of1ForFork0_~arg.base_9 |v_BCSP_PnpStopThread1of1ForFork0_#in~arg.base_9|)) InVars {BCSP_PnpStopThread1of1ForFork0_#in~arg.offset=|v_BCSP_PnpStopThread1of1ForFork0_#in~arg.offset_9|, BCSP_PnpStopThread1of1ForFork0_#in~arg.base=|v_BCSP_PnpStopThread1of1ForFork0_#in~arg.base_9|} OutVars{BCSP_PnpStopThread1of1ForFork0_#in~arg.offset=|v_BCSP_PnpStopThread1of1ForFork0_#in~arg.offset_9|, ~stoppingFlag~0=v_~stoppingFlag~0_23, BCSP_PnpStopThread1of1ForFork0_~arg.base=v_BCSP_PnpStopThread1of1ForFork0_~arg.base_9, BCSP_PnpStopThread1of1ForFork0_~arg.offset=v_BCSP_PnpStopThread1of1ForFork0_~arg.offset_9, BCSP_PnpStopThread1of1ForFork0_#in~arg.base=|v_BCSP_PnpStopThread1of1ForFork0_#in~arg.base_9|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0=v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_19, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3=|v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3_13|} AuxVars[] AssignedVars[~stoppingFlag~0, BCSP_PnpStopThread1of1ForFork0_~arg.base, BCSP_PnpStopThread1of1ForFork0_~arg.offset, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3] {499#true} is VALID [2020-07-28 21:49:45,275 INFO L280 TraceCheckUtils]: 3: Hoare triple {499#true} [337] L734-2-->L714-2: Formula: (and (= (- 1) |v_ULTIMATE.start_BCSP_IoIncrement_#res_48|) (= 0 |v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.base_17|) (= |v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_73| |v_ULTIMATE.start_BCSP_IoIncrement_#res_48|) (= v_ULTIMATE.start_BCSP_PnpAdd_~arg.base_19 |v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.base_17|) (not (= 0 v_~stoppingFlag~0_58)) (= 0 |v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset_17|) (= v_ULTIMATE.start_BCSP_PnpAdd_~arg.offset_19 |v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset_17|)) InVars {~stoppingFlag~0=v_~stoppingFlag~0_58} OutVars{ULTIMATE.start_BCSP_PnpAdd_#res.offset=|v_ULTIMATE.start_BCSP_PnpAdd_#res.offset_50|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_15|, ULTIMATE.start_BCSP_PnpAdd_~arg.base=v_ULTIMATE.start_BCSP_PnpAdd_~arg.base_19, ULTIMATE.start_BCSP_PnpAdd_#in~arg.base=|v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.base_17|, ~stoppingFlag~0=v_~stoppingFlag~0_58, ULTIMATE.start_BCSP_PnpAdd_#res.base=|v_ULTIMATE.start_BCSP_PnpAdd_#res.base_50|, ULTIMATE.start_BCSP_IoIncrement_#res=|v_ULTIMATE.start_BCSP_IoIncrement_#res_48|, ULTIMATE.start_BCSP_PnpAdd_#t~ret4=|v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_73|, ULTIMATE.start_BCSP_PnpAdd_~status~0=v_ULTIMATE.start_BCSP_PnpAdd_~status~0_67, ULTIMATE.start_BCSP_PnpAdd_~arg.offset=v_ULTIMATE.start_BCSP_PnpAdd_~arg.offset_19, ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset=|v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset_17|} AuxVars[] AssignedVars[ULTIMATE.start_BCSP_PnpAdd_#res.offset, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_BCSP_PnpAdd_~arg.base, ULTIMATE.start_BCSP_PnpAdd_#in~arg.base, ULTIMATE.start_BCSP_PnpAdd_#res.base, ULTIMATE.start_BCSP_IoIncrement_#res, ULTIMATE.start_BCSP_PnpAdd_#t~ret4, ULTIMATE.start_BCSP_PnpAdd_~status~0, ULTIMATE.start_BCSP_PnpAdd_~arg.offset, ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset] {501#(= 0 (+ |ULTIMATE.start_BCSP_PnpAdd_#t~ret4| 1))} is VALID [2020-07-28 21:49:45,275 INFO L280 TraceCheckUtils]: 4: Hoare triple {501#(= 0 (+ |ULTIMATE.start_BCSP_PnpAdd_#t~ret4| 1))} [322] L706-->L708: Formula: (and (<= 0 (+ |v_BCSP_PnpStopThread1of1ForFork0_dec_#res_17| 2147483648)) (<= |v_BCSP_PnpStopThread1of1ForFork0_dec_#res_17| 2147483647) (= v_~pendingIo~0_108 (+ v_~pendingIo~0_107 1)) (= |v_BCSP_PnpStopThread1of1ForFork0_dec_#res_17| v_BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0_27) (= |v_BCSP_PnpStopThread1of1ForFork0_dec_#res_17| v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_41) (= v_~pendingIo~0_107 v_BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0_27)) InVars {~pendingIo~0=v_~pendingIo~0_108} OutVars{BCSP_PnpStopThread1of1ForFork0_dec_#res=|v_BCSP_PnpStopThread1of1ForFork0_dec_#res_17|, BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0=v_BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0_27, BCSP_PnpStopThread1of1ForFork0_dec_#t~post2=|v_BCSP_PnpStopThread1of1ForFork0_dec_#t~post2_25|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3=|v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3_27|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0=v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_41, ~pendingIo~0=v_~pendingIo~0_107} AuxVars[] AssignedVars[BCSP_PnpStopThread1of1ForFork0_dec_#res, BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0, BCSP_PnpStopThread1of1ForFork0_dec_#t~post2, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0, ~pendingIo~0] {501#(= 0 (+ |ULTIMATE.start_BCSP_PnpAdd_#t~ret4| 1))} is VALID [2020-07-28 21:49:45,276 INFO L280 TraceCheckUtils]: 5: Hoare triple {501#(= 0 (+ |ULTIMATE.start_BCSP_PnpAdd_#t~ret4| 1))} [325] L708-->BCSP_PnpStopEXIT: Formula: (and (= 0 v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_55) (= 1 v_~stopped~0_35) (= v_BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_31 |v_BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_36|) (= v_~stoppingEvent~0_64 1) (= 0 |v_BCSP_PnpStopThread1of1ForFork0_#res.base_11|) (= 0 |v_BCSP_PnpStopThread1of1ForFork0_#res.offset_11|) (= v_~stoppingEvent~0_64 |v_BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_36|)) InVars {BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0=v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_55} OutVars{~stoppingEvent~0=v_~stoppingEvent~0_64, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=v_BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_31, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|v_BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_36|, BCSP_PnpStopThread1of1ForFork0_#res.base=|v_BCSP_PnpStopThread1of1ForFork0_#res.base_11|, ~stopped~0=v_~stopped~0_35, BCSP_PnpStopThread1of1ForFork0_#res.offset=|v_BCSP_PnpStopThread1of1ForFork0_#res.offset_11|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0=v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_55} AuxVars[] AssignedVars[~stoppingEvent~0, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond, BCSP_PnpStopThread1of1ForFork0_#res.base, ~stopped~0, BCSP_PnpStopThread1of1ForFork0_#res.offset] {501#(= 0 (+ |ULTIMATE.start_BCSP_PnpAdd_#t~ret4| 1))} is VALID [2020-07-28 21:49:45,277 INFO L280 TraceCheckUtils]: 6: Hoare triple {501#(= 0 (+ |ULTIMATE.start_BCSP_PnpAdd_#t~ret4| 1))} [330] L714-2-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= v_ULTIMATE.start___VERIFIER_assert_~cond_18 |v_ULTIMATE.start___VERIFIER_assert_#in~cond_17|) (= 0 v_ULTIMATE.start_BCSP_PnpAdd_~status~0_44) (not (= 0 v_~stopped~0_37)) (= 0 v_ULTIMATE.start___VERIFIER_assert_~cond_18) (= |v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_34| v_ULTIMATE.start_BCSP_PnpAdd_~status~0_44)) InVars {~stopped~0=v_~stopped~0_37, ULTIMATE.start_BCSP_PnpAdd_#t~ret4=|v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_34|} OutVars{ULTIMATE.start___VERIFIER_assert_~cond=v_ULTIMATE.start___VERIFIER_assert_~cond_18, ~stopped~0=v_~stopped~0_37, ULTIMATE.start___VERIFIER_assert_#in~cond=|v_ULTIMATE.start___VERIFIER_assert_#in~cond_17|, ULTIMATE.start_BCSP_PnpAdd_~status~0=v_ULTIMATE.start_BCSP_PnpAdd_~status~0_44, ULTIMATE.start_BCSP_PnpAdd_#t~ret4=|v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_33|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_~cond, ULTIMATE.start___VERIFIER_assert_#in~cond, ULTIMATE.start_BCSP_PnpAdd_~status~0, ULTIMATE.start_BCSP_PnpAdd_#t~ret4] {500#false} is VALID [2020-07-28 21:49:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 21:49:45,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391612820] [2020-07-28 21:49:45,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 21:49:45,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 21:49:45,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62186318] [2020-07-28 21:49:45,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-07-28 21:49:45,280 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 21:49:45,280 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-28 21:49:45,316 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 21:49:45,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-28 21:49:45,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 21:49:45,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-28 21:49:45,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 21:49:45,318 INFO L87 Difference]: Start difference. First operand 21 states and 38 transitions. Second operand 3 states. [2020-07-28 21:49:45,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 21:49:45,366 INFO L93 Difference]: Finished difference Result 26 states and 43 transitions. [2020-07-28 21:49:45,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-28 21:49:45,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-07-28 21:49:45,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 21:49:45,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 21:49:45,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 18 transitions. [2020-07-28 21:49:45,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 21:49:45,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 18 transitions. [2020-07-28 21:49:45,369 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 18 transitions. [2020-07-28 21:49:45,402 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 21:49:45,403 INFO L225 Difference]: With dead ends: 26 [2020-07-28 21:49:45,403 INFO L226 Difference]: Without dead ends: 21 [2020-07-28 21:49:45,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 21:49:45,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-28 21:49:45,408 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,409 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,409 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,409 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,410 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,410 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,414 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,414 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,414 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,415 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,415 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,415 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,415 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,416 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,416 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,416 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,417 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,417 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,417 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,417 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,418 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-28 21:49:45,419 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 21:49:45,419 INFO L82 GeneralOperation]: Start isEquivalent. First operand 21 states. Second operand 21 states. [2020-07-28 21:49:45,419 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 21 states. [2020-07-28 21:49:45,419 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 21 states. [2020-07-28 21:49:45,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 21:49:45,422 INFO L93 Difference]: Finished difference Result 21 states and 33 transitions. [2020-07-28 21:49:45,423 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 33 transitions. [2020-07-28 21:49:45,423 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 21:49:45,423 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 21:49:45,423 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 21 states. [2020-07-28 21:49:45,424 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 21 states. [2020-07-28 21:49:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 21:49:45,429 INFO L93 Difference]: Finished difference Result 21 states and 33 transitions. [2020-07-28 21:49:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 33 transitions. [2020-07-28 21:49:45,430 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 21:49:45,430 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 21:49:45,430 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 21:49:45,431 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 21:49:45,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-28 21:49:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 33 transitions. [2020-07-28 21:49:45,436 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 33 transitions. Word has length 7 [2020-07-28 21:49:45,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 21:49:45,436 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 33 transitions. [2020-07-28 21:49:45,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-28 21:49:45,437 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 33 transitions. [2020-07-28 21:49:45,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-28 21:49:45,439 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 21:49:45,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 21:49:45,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-28 21:49:45,440 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 21:49:45,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 21:49:45,441 INFO L82 PathProgramCache]: Analyzing trace with hash 570241712, now seen corresponding path program 1 times [2020-07-28 21:49:45,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 21:49:45,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59003272] [2020-07-28 21:49:45,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 21:49:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 21:49:45,547 INFO L280 TraceCheckUtils]: 0: Hoare triple {614#true} [332] ULTIMATE.startENTRY-->L734-1: Formula: (let ((.cse0 (store |v_#valid_51| 0 0))) (and (= 0 v_~stoppingFlag~0_49) (= 0 |v_#NULL.base_5|) (= |v_#valid_50| (store .cse0 |v_ULTIMATE.start_main_~#t~0.base_40| 1)) (< 0 |v_#StackHeapBarrier_10|) (< |v_#StackHeapBarrier_10| |v_ULTIMATE.start_main_~#t~0.base_40|) (= v_~pendingIo~0_132 1) (= 0 |v_#NULL.offset_5|) (= v_~stoppingEvent~0_66 0) (= (store |v_#length_12| |v_ULTIMATE.start_main_~#t~0.base_40| 4) |v_#length_11|) (= (store |v_#memory_int_6| |v_ULTIMATE.start_main_~#t~0.base_40| (store (select |v_#memory_int_6| |v_ULTIMATE.start_main_~#t~0.base_40|) |v_ULTIMATE.start_main_~#t~0.offset_26| 0)) |v_#memory_int_5|) (= |v_ULTIMATE.start_main_~#t~0.offset_26| 0) (= 0 v_~stopped~0_38) (= 0 (select .cse0 |v_ULTIMATE.start_main_~#t~0.base_40|)))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_10|, #valid=|v_#valid_51|, #memory_int=|v_#memory_int_6|, #length=|v_#length_12|} OutVars{ULTIMATE.start_main_#t~ret6.base=|v_ULTIMATE.start_main_#t~ret6.base_29|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_11|, ~stoppingFlag~0=v_~stoppingFlag~0_49, ULTIMATE.start_main_#t~ret6.offset=|v_ULTIMATE.start_main_#t~ret6.offset_29|, ~stopped~0=v_~stopped~0_38, #NULL.offset=|v_#NULL.offset_5|, ULTIMATE.start_main_~#t~0.offset=|v_ULTIMATE.start_main_~#t~0.offset_26|, #NULL.base=|v_#NULL.base_5|, ~pendingIo~0=v_~pendingIo~0_132, ~stoppingEvent~0=v_~stoppingEvent~0_66, #StackHeapBarrier=|v_#StackHeapBarrier_10|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_23|, #valid=|v_#valid_50|, #memory_int=|v_#memory_int_5|, ULTIMATE.start_main_~#t~0.base=|v_ULTIMATE.start_main_~#t~0.base_40|, #length=|v_#length_11|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret6.base, ULTIMATE.start_main_#t~nondet5, ~stoppingFlag~0, ULTIMATE.start_main_#t~ret6.offset, ~stopped~0, #NULL.offset, ULTIMATE.start_main_~#t~0.offset, #NULL.base, ~pendingIo~0, ~stoppingEvent~0, ULTIMATE.start_main_#res, #valid, #memory_int, ULTIMATE.start_main_~#t~0.base, #length] {616#(<= 1 ~pendingIo~0)} is VALID [2020-07-28 21:49:45,548 INFO L280 TraceCheckUtils]: 1: Hoare triple {616#(<= 1 ~pendingIo~0)} [240] L734-1-->BCSP_PnpStopENTRY: Formula: (and (= 0 |v_BCSP_PnpStopThread1of1ForFork0_#in~arg.base_3|) (= v_BCSP_PnpStopThread1of1ForFork0_thidvar0_2 0) (= 0 |v_BCSP_PnpStopThread1of1ForFork0_#in~arg.offset_3|)) InVars {} OutVars{BCSP_PnpStopThread1of1ForFork0_thidvar0=v_BCSP_PnpStopThread1of1ForFork0_thidvar0_2, BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0=v_BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0_5, BCSP_PnpStopThread1of1ForFork0_dec_#res=|v_BCSP_PnpStopThread1of1ForFork0_dec_#res_5|, BCSP_PnpStopThread1of1ForFork0_#in~arg.offset=|v_BCSP_PnpStopThread1of1ForFork0_#in~arg.offset_3|, BCSP_PnpStopThread1of1ForFork0_~arg.offset=v_BCSP_PnpStopThread1of1ForFork0_~arg.offset_3, BCSP_PnpStopThread1of1ForFork0_dec_#t~post2=|v_BCSP_PnpStopThread1of1ForFork0_dec_#t~post2_4|, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=v_BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_6, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|v_BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_4|, BCSP_PnpStopThread1of1ForFork0_~arg.base=v_BCSP_PnpStopThread1of1ForFork0_~arg.base_3, BCSP_PnpStopThread1of1ForFork0_#res.base=|v_BCSP_PnpStopThread1of1ForFork0_#res.base_3|, BCSP_PnpStopThread1of1ForFork0_#res.offset=|v_BCSP_PnpStopThread1of1ForFork0_#res.offset_3|, BCSP_PnpStopThread1of1ForFork0_#in~arg.base=|v_BCSP_PnpStopThread1of1ForFork0_#in~arg.base_3|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3=|v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3_7|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0=v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_7} AuxVars[] AssignedVars[BCSP_PnpStopThread1of1ForFork0_thidvar0, BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0, BCSP_PnpStopThread1of1ForFork0_dec_#res, BCSP_PnpStopThread1of1ForFork0_#in~arg.offset, BCSP_PnpStopThread1of1ForFork0_~arg.offset, BCSP_PnpStopThread1of1ForFork0_dec_#t~post2, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond, BCSP_PnpStopThread1of1ForFork0_~arg.base, BCSP_PnpStopThread1of1ForFork0_#res.base, BCSP_PnpStopThread1of1ForFork0_#res.offset, BCSP_PnpStopThread1of1ForFork0_#in~arg.base, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0] {616#(<= 1 ~pendingIo~0)} is VALID [2020-07-28 21:49:45,549 INFO L280 TraceCheckUtils]: 2: Hoare triple {616#(<= 1 ~pendingIo~0)} [326] L734-2-->L694: Formula: (and (= 0 |v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.base_9|) (= 0 v_~stoppingFlag~0_44) (= v_ULTIMATE.start_BCSP_PnpAdd_~arg.offset_9 |v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset_9|) (= v_ULTIMATE.start_BCSP_PnpAdd_~arg.base_9 |v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.base_9|) (= 0 |v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset_9|)) InVars {~stoppingFlag~0=v_~stoppingFlag~0_44} OutVars{ULTIMATE.start_BCSP_PnpAdd_#res.offset=|v_ULTIMATE.start_BCSP_PnpAdd_#res.offset_32|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_7|, ULTIMATE.start_BCSP_PnpAdd_~arg.base=v_ULTIMATE.start_BCSP_PnpAdd_~arg.base_9, ULTIMATE.start_BCSP_PnpAdd_#in~arg.base=|v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.base_9|, ~stoppingFlag~0=v_~stoppingFlag~0_44, ULTIMATE.start_BCSP_PnpAdd_#res.base=|v_ULTIMATE.start_BCSP_PnpAdd_#res.base_32|, ULTIMATE.start_BCSP_IoIncrement_#res=|v_ULTIMATE.start_BCSP_IoIncrement_#res_38|, ULTIMATE.start_BCSP_PnpAdd_~status~0=v_ULTIMATE.start_BCSP_PnpAdd_~status~0_41, ULTIMATE.start_BCSP_PnpAdd_~arg.offset=v_ULTIMATE.start_BCSP_PnpAdd_~arg.offset_9, ULTIMATE.start_BCSP_PnpAdd_#t~ret4=|v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_30|, ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset=|v_ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset_9|} AuxVars[] AssignedVars[ULTIMATE.start_BCSP_PnpAdd_#res.offset, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_BCSP_PnpAdd_~arg.base, ULTIMATE.start_BCSP_PnpAdd_#in~arg.base, ULTIMATE.start_BCSP_PnpAdd_#res.base, ULTIMATE.start_BCSP_IoIncrement_#res, ULTIMATE.start_BCSP_PnpAdd_~status~0, ULTIMATE.start_BCSP_PnpAdd_~arg.offset, ULTIMATE.start_BCSP_PnpAdd_#t~ret4, ULTIMATE.start_BCSP_PnpAdd_#in~arg.offset] {616#(<= 1 ~pendingIo~0)} is VALID [2020-07-28 21:49:45,551 INFO L280 TraceCheckUtils]: 3: Hoare triple {616#(<= 1 ~pendingIo~0)} [309] L694-->L714-2: Formula: (and (= v_~pendingIo~0_93 (+ v_~pendingIo~0_94 1)) (= |v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_20| |v_ULTIMATE.start_BCSP_IoIncrement_#res_28|) (= 0 |v_ULTIMATE.start_BCSP_IoIncrement_#res_28|)) InVars {~pendingIo~0=v_~pendingIo~0_94} OutVars{ULTIMATE.start_BCSP_IoIncrement_#res=|v_ULTIMATE.start_BCSP_IoIncrement_#res_28|, ULTIMATE.start_BCSP_PnpAdd_#t~ret4=|v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_20|, ~pendingIo~0=v_~pendingIo~0_93} AuxVars[] AssignedVars[ULTIMATE.start_BCSP_IoIncrement_#res, ULTIMATE.start_BCSP_PnpAdd_#t~ret4, ~pendingIo~0] {617#(<= 2 ~pendingIo~0)} is VALID [2020-07-28 21:49:45,551 INFO L280 TraceCheckUtils]: 4: Hoare triple {617#(<= 2 ~pendingIo~0)} [299] BCSP_PnpStopENTRY-->L706: Formula: (and (= v_BCSP_PnpStopThread1of1ForFork0_~arg.offset_9 |v_BCSP_PnpStopThread1of1ForFork0_#in~arg.offset_9|) (= 1 v_~stoppingFlag~0_23) (= v_BCSP_PnpStopThread1of1ForFork0_~arg.base_9 |v_BCSP_PnpStopThread1of1ForFork0_#in~arg.base_9|)) InVars {BCSP_PnpStopThread1of1ForFork0_#in~arg.offset=|v_BCSP_PnpStopThread1of1ForFork0_#in~arg.offset_9|, BCSP_PnpStopThread1of1ForFork0_#in~arg.base=|v_BCSP_PnpStopThread1of1ForFork0_#in~arg.base_9|} OutVars{BCSP_PnpStopThread1of1ForFork0_#in~arg.offset=|v_BCSP_PnpStopThread1of1ForFork0_#in~arg.offset_9|, ~stoppingFlag~0=v_~stoppingFlag~0_23, BCSP_PnpStopThread1of1ForFork0_~arg.base=v_BCSP_PnpStopThread1of1ForFork0_~arg.base_9, BCSP_PnpStopThread1of1ForFork0_~arg.offset=v_BCSP_PnpStopThread1of1ForFork0_~arg.offset_9, BCSP_PnpStopThread1of1ForFork0_#in~arg.base=|v_BCSP_PnpStopThread1of1ForFork0_#in~arg.base_9|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0=v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_19, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3=|v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3_13|} AuxVars[] AssignedVars[~stoppingFlag~0, BCSP_PnpStopThread1of1ForFork0_~arg.base, BCSP_PnpStopThread1of1ForFork0_~arg.offset, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3] {617#(<= 2 ~pendingIo~0)} is VALID [2020-07-28 21:49:45,553 INFO L280 TraceCheckUtils]: 5: Hoare triple {617#(<= 2 ~pendingIo~0)} [322] L706-->L708: Formula: (and (<= 0 (+ |v_BCSP_PnpStopThread1of1ForFork0_dec_#res_17| 2147483648)) (<= |v_BCSP_PnpStopThread1of1ForFork0_dec_#res_17| 2147483647) (= v_~pendingIo~0_108 (+ v_~pendingIo~0_107 1)) (= |v_BCSP_PnpStopThread1of1ForFork0_dec_#res_17| v_BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0_27) (= |v_BCSP_PnpStopThread1of1ForFork0_dec_#res_17| v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_41) (= v_~pendingIo~0_107 v_BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0_27)) InVars {~pendingIo~0=v_~pendingIo~0_108} OutVars{BCSP_PnpStopThread1of1ForFork0_dec_#res=|v_BCSP_PnpStopThread1of1ForFork0_dec_#res_17|, BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0=v_BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0_27, BCSP_PnpStopThread1of1ForFork0_dec_#t~post2=|v_BCSP_PnpStopThread1of1ForFork0_dec_#t~post2_25|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3=|v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3_27|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0=v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_41, ~pendingIo~0=v_~pendingIo~0_107} AuxVars[] AssignedVars[BCSP_PnpStopThread1of1ForFork0_dec_#res, BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0, BCSP_PnpStopThread1of1ForFork0_dec_#t~post2, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0, ~pendingIo~0] {618#(not (= 0 BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0))} is VALID [2020-07-28 21:49:45,553 INFO L280 TraceCheckUtils]: 6: Hoare triple {618#(not (= 0 BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0))} [325] L708-->BCSP_PnpStopEXIT: Formula: (and (= 0 v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_55) (= 1 v_~stopped~0_35) (= v_BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_31 |v_BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_36|) (= v_~stoppingEvent~0_64 1) (= 0 |v_BCSP_PnpStopThread1of1ForFork0_#res.base_11|) (= 0 |v_BCSP_PnpStopThread1of1ForFork0_#res.offset_11|) (= v_~stoppingEvent~0_64 |v_BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_36|)) InVars {BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0=v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_55} OutVars{~stoppingEvent~0=v_~stoppingEvent~0_64, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=v_BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_31, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|v_BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_36|, BCSP_PnpStopThread1of1ForFork0_#res.base=|v_BCSP_PnpStopThread1of1ForFork0_#res.base_11|, ~stopped~0=v_~stopped~0_35, BCSP_PnpStopThread1of1ForFork0_#res.offset=|v_BCSP_PnpStopThread1of1ForFork0_#res.offset_11|, BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0=v_BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0_55} AuxVars[] AssignedVars[~stoppingEvent~0, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond, BCSP_PnpStopThread1of1ForFork0_#res.base, ~stopped~0, BCSP_PnpStopThread1of1ForFork0_#res.offset] {615#false} is VALID [2020-07-28 21:49:45,554 INFO L280 TraceCheckUtils]: 7: Hoare triple {615#false} [330] L714-2-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= v_ULTIMATE.start___VERIFIER_assert_~cond_18 |v_ULTIMATE.start___VERIFIER_assert_#in~cond_17|) (= 0 v_ULTIMATE.start_BCSP_PnpAdd_~status~0_44) (not (= 0 v_~stopped~0_37)) (= 0 v_ULTIMATE.start___VERIFIER_assert_~cond_18) (= |v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_34| v_ULTIMATE.start_BCSP_PnpAdd_~status~0_44)) InVars {~stopped~0=v_~stopped~0_37, ULTIMATE.start_BCSP_PnpAdd_#t~ret4=|v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_34|} OutVars{ULTIMATE.start___VERIFIER_assert_~cond=v_ULTIMATE.start___VERIFIER_assert_~cond_18, ~stopped~0=v_~stopped~0_37, ULTIMATE.start___VERIFIER_assert_#in~cond=|v_ULTIMATE.start___VERIFIER_assert_#in~cond_17|, ULTIMATE.start_BCSP_PnpAdd_~status~0=v_ULTIMATE.start_BCSP_PnpAdd_~status~0_44, ULTIMATE.start_BCSP_PnpAdd_#t~ret4=|v_ULTIMATE.start_BCSP_PnpAdd_#t~ret4_33|} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_~cond, ULTIMATE.start___VERIFIER_assert_#in~cond, ULTIMATE.start_BCSP_PnpAdd_~status~0, ULTIMATE.start_BCSP_PnpAdd_#t~ret4] {615#false} is VALID [2020-07-28 21:49:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 21:49:45,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59003272] [2020-07-28 21:49:45,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 21:49:45,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-28 21:49:45,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135620545] [2020-07-28 21:49:45,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-07-28 21:49:45,556 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 21:49:45,557 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-28 21:49:45,567 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 21:49:45,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-28 21:49:45,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 21:49:45,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-28 21:49:45,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-28 21:49:45,569 INFO L87 Difference]: Start difference. First operand 21 states and 33 transitions. Second operand 5 states. [2020-07-28 21:49:45,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 21:49:45,672 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2020-07-28 21:49:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-28 21:49:45,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-07-28 21:49:45,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 21:49:45,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-28 21:49:45,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 23 transitions. [2020-07-28 21:49:45,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-28 21:49:45,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 23 transitions. [2020-07-28 21:49:45,675 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 23 transitions. [2020-07-28 21:49:45,706 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 21:49:45,708 INFO L225 Difference]: With dead ends: 30 [2020-07-28 21:49:45,708 INFO L226 Difference]: Without dead ends: 29 [2020-07-28 21:49:45,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-28 21:49:45,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-28 21:49:45,711 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,711 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,711 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,712 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,712 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,712 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,712 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,712 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,713 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,713 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,713 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,714 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,714 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,714 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,714 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,714 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,715 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,715 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,715 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,715 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,716 WARN L146 ateFactoryRefinement]: Check not implemented [2020-07-28 21:49:45,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2020-07-28 21:49:45,716 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 21:49:45,716 INFO L82 GeneralOperation]: Start isEquivalent. First operand 29 states. Second operand 21 states. [2020-07-28 21:49:45,717 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand 21 states. [2020-07-28 21:49:45,717 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 21 states. [2020-07-28 21:49:45,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 21:49:45,719 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2020-07-28 21:49:45,719 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2020-07-28 21:49:45,720 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 21:49:45,720 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 21:49:45,720 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 29 states. [2020-07-28 21:49:45,721 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 29 states. [2020-07-28 21:49:45,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 21:49:45,723 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2020-07-28 21:49:45,723 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2020-07-28 21:49:45,723 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 21:49:45,724 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 21:49:45,724 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 21:49:45,724 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 21:49:45,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-28 21:49:45,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 32 transitions. [2020-07-28 21:49:45,726 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 32 transitions. Word has length 8 [2020-07-28 21:49:45,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 21:49:45,726 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 32 transitions. [2020-07-28 21:49:45,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-28 21:49:45,727 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 32 transitions. [2020-07-28 21:49:45,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-28 21:49:45,727 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 21:49:45,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 21:49:45,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-28 21:49:45,728 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 21:49:45,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 21:49:45,729 INFO L82 PathProgramCache]: Analyzing trace with hash 561679202, now seen corresponding path program 2 times [2020-07-28 21:49:45,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 21:49:45,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747964746] [2020-07-28 21:49:45,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 21:49:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 21:49:45,748 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 21:49:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 21:49:45,761 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 21:49:45,785 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 21:49:45,785 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 21:49:45,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-28 21:49:45,787 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-07-28 21:49:45,793 WARN L123 codingBacktranslator]: Skipped backtranslation of ATE [320] [320] L674-->BCSP_PnpStopEXIT: Formula: (and (= 1 ~stopped~0_Out1372695597) (= |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In1372695597| BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out1372695597) (= 0 |BCSP_PnpStopThread1of1ForFork0_#res.base_Out1372695597|) (not (= 0 BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out1372695597)) (= 0 |BCSP_PnpStopThread1of1ForFork0_#res.offset_Out1372695597|)) InVars {BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In1372695597|} OutVars{BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out1372695597, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In1372695597|, BCSP_PnpStopThread1of1ForFork0_#res.base=|BCSP_PnpStopThread1of1ForFork0_#res.base_Out1372695597|, ~stopped~0=~stopped~0_Out1372695597, BCSP_PnpStopThread1of1ForFork0_#res.offset=|BCSP_PnpStopThread1of1ForFork0_#res.offset_Out1372695597|} AuxVars[] AssignedVars[BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond, BCSP_PnpStopThread1of1ForFork0_#res.base, ~stopped~0, BCSP_PnpStopThread1of1ForFork0_#res.offset] because there is no mapped edge [2020-07-28 21:49:45,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 09:49:45 BasicIcfg [2020-07-28 21:49:45,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 21:49:45,824 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 21:49:45,824 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 21:49:45,825 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 21:49:45,825 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 09:49:41" (3/4) ... [2020-07-28 21:49:45,828 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 21:49:45,830 WARN L123 codingBacktranslator]: Skipped backtranslation of ATE [320] [320] L674-->BCSP_PnpStopEXIT: Formula: (and (= 1 ~stopped~0_Out1372695597) (= |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In1372695597| BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out1372695597) (= 0 |BCSP_PnpStopThread1of1ForFork0_#res.base_Out1372695597|) (not (= 0 BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out1372695597)) (= 0 |BCSP_PnpStopThread1of1ForFork0_#res.offset_Out1372695597|)) InVars {BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In1372695597|} OutVars{BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out1372695597, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In1372695597|, BCSP_PnpStopThread1of1ForFork0_#res.base=|BCSP_PnpStopThread1of1ForFork0_#res.base_Out1372695597|, ~stopped~0=~stopped~0_Out1372695597, BCSP_PnpStopThread1of1ForFork0_#res.offset=|BCSP_PnpStopThread1of1ForFork0_#res.offset_Out1372695597|} AuxVars[] AssignedVars[BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond, BCSP_PnpStopThread1of1ForFork0_#res.base, ~stopped~0, BCSP_PnpStopThread1of1ForFork0_#res.offset] because there is no mapped edge [2020-07-28 21:49:45,906 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 21:49:45,906 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 21:49:45,910 INFO L168 Benchmark]: Toolchain (without parser) took 6404.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 202.4 MB). Free memory was 957.5 MB in the beginning and 803.2 MB in the end (delta: 154.3 MB). Peak memory consumption was 356.7 MB. Max. memory is 11.5 GB. [2020-07-28 21:49:45,910 INFO L168 Benchmark]: CDTParser took 0.87 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 21:49:45,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 806.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 957.5 MB in the beginning and 1.1 GB in the end (delta: -131.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2020-07-28 21:49:45,911 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.12 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. [2020-07-28 21:49:45,912 INFO L168 Benchmark]: Boogie Preprocessor took 45.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-07-28 21:49:45,912 INFO L168 Benchmark]: RCFGBuilder took 674.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 11.5 GB. [2020-07-28 21:49:45,913 INFO L168 Benchmark]: TraceAbstraction took 4704.17 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.0 MB). Free memory was 1.0 GB in the beginning and 811.0 MB in the end (delta: 233.1 MB). Peak memory consumption was 308.1 MB. Max. memory is 11.5 GB. [2020-07-28 21:49:45,914 INFO L168 Benchmark]: Witness Printer took 82.29 ms. Allocated memory is still 1.2 GB. Free memory was 811.0 MB in the beginning and 803.2 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. [2020-07-28 21:49:45,917 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 806.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 957.5 MB in the beginning and 1.1 GB in the end (delta: -131.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 82.12 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 45.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 674.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4704.17 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.0 MB). Free memory was 1.0 GB in the beginning and 811.0 MB in the end (delta: 233.1 MB). Peak memory consumption was 308.1 MB. Max. memory is 11.5 GB. * Witness Printer took 82.29 ms. Allocated memory is still 1.2 GB. Free memory was 811.0 MB in the beginning and 803.2 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 3.2s, 85 ProgramPointsBefore, 18 ProgramPointsAfterwards, 87 TransitionsBefore, 17 TransitionsAfterwards, 2208 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 3 ChoiceCompositions, 1351 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 41 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 1.0s, 0 MoverChecksTotal, 2663 CheckedPairsTotal, 94 TotalNumberOfCompositions - CounterExampleResult [Line: 679]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L686] 0 volatile int stoppingFlag; [L687] 0 volatile int pendingIo; [L688] 0 volatile int stoppingEvent; [L689] 0 volatile int stopped; [L729] 0 pthread_t t; [L730] 0 pendingIo = 1 [L731] 0 stoppingFlag = 0 [L732] 0 stoppingEvent = 0 [L733] 0 stopped = 0 [L734] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L713] 0 int status; [L691] COND FALSE 0 !(\read(stoppingFlag)) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L722] 1 stoppingFlag = 1 [L706] 1 int pending; [L700] 1 pendingIo-- [L701] 1 int tmp = pendingIo; [L703] 1 return tmp; [L707] 1 pending = dec() [L694] 0 pendingIo = pendingIo + 1 [L696] 0 return 0; [L708] COND TRUE 1 pending == 0 [L709] 1 stoppingEvent = 1 [L714] 0 status = BCSP_IoIncrement() [L715] COND TRUE 0 status == 0 [L678] COND TRUE 0 !(cond) [L679] 0 __VERIFIER_error() VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 82 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 63 SDtfs, 29 SDslu, 38 SDs, 0 SdLazy, 29 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 317 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...