./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-lit/qw2004-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/qw2004-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46374fd752f48016661a982099922335aa36fba4 ................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:35:14,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:35:14,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:35:14,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:35:14,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:35:14,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:35:14,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:35:14,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:35:14,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:35:14,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:35:14,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:35:14,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:35:14,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:35:14,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:35:14,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:35:14,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:35:14,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:35:14,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:35:14,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:35:14,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:35:14,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:35:14,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:35:14,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:35:14,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:35:14,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:35:14,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:35:14,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:35:14,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:35:14,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:35:14,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:35:14,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:35:14,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:35:14,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:35:14,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:35:14,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:35:14,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:35:14,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:35:14,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:35:14,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:35:14,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:35:14,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:35:14,797 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:35:14,825 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:35:14,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:35:14,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:35:14,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:35:14,827 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:35:14,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:35:14,828 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:35:14,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:35:14,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:35:14,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:35:14,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:35:14,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:35:14,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:35:14,829 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:35:14,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:35:14,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:35:14,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:35:14,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:35:14,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:35:14,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:35:14,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:35:14,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:35:14,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:35:14,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:35:14,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:35:14,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:35:14,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:35:14,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:35:14,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:35:14,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46374fd752f48016661a982099922335aa36fba4 [2020-10-26 00:35:15,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:35:15,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:35:15,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:35:15,273 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:35:15,278 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:35:15,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/qw2004-1.i [2020-10-26 00:35:15,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6d002fd/ec96eb3bcae346fd8cc74ed958cca6f5/FLAG2d16be325 [2020-10-26 00:35:16,214 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:35:16,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/qw2004-1.i [2020-10-26 00:35:16,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6d002fd/ec96eb3bcae346fd8cc74ed958cca6f5/FLAG2d16be325 [2020-10-26 00:35:16,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6d002fd/ec96eb3bcae346fd8cc74ed958cca6f5 [2020-10-26 00:35:16,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:35:16,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:35:16,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:35:16,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:35:16,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:35:16,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:35:16" (1/1) ... [2020-10-26 00:35:16,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a525cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:16, skipping insertion in model container [2020-10-26 00:35:16,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:35:16" (1/1) ... [2020-10-26 00:35:16,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:35:16,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:35:16,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:35:16,837 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:35:16,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:35:17,024 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:35:17,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:17 WrapperNode [2020-10-26 00:35:17,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:35:17,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:35:17,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:35:17,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:35:17,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:17" (1/1) ... [2020-10-26 00:35:17,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:17" (1/1) ... [2020-10-26 00:35:17,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:35:17,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:35:17,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:35:17,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:35:17,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:17" (1/1) ... [2020-10-26 00:35:17,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:17" (1/1) ... [2020-10-26 00:35:17,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:17" (1/1) ... [2020-10-26 00:35:17,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:17" (1/1) ... [2020-10-26 00:35:17,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:17" (1/1) ... [2020-10-26 00:35:17,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:17" (1/1) ... [2020-10-26 00:35:17,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:17" (1/1) ... [2020-10-26 00:35:17,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:35:17,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:35:17,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:35:17,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:35:17,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:35:17,228 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-10-26 00:35:17,228 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-10-26 00:35:17,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:35:17,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:35:17,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:35:17,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:35:17,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:35:17,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:35:17,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:35:17,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:35:17,231 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:35:17,868 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:35:17,869 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-10-26 00:35:17,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:35:17 BoogieIcfgContainer [2020-10-26 00:35:17,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:35:17,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:35:17,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:35:17,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:35:17,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:35:16" (1/3) ... [2020-10-26 00:35:17,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238de7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:35:17, skipping insertion in model container [2020-10-26 00:35:17,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:35:17" (2/3) ... [2020-10-26 00:35:17,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238de7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:35:17, skipping insertion in model container [2020-10-26 00:35:17,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:35:17" (3/3) ... [2020-10-26 00:35:17,883 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-1.i [2020-10-26 00:35:17,897 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:35:17,898 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:35:17,904 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:35:17,905 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:35:17,942 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,943 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,943 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,943 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,944 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,944 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,944 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,945 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,945 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,945 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,945 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,946 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,946 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,946 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,947 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,947 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,947 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,948 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,948 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,948 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,948 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,949 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,949 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,950 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,950 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,950 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,950 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,951 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,952 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,953 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,957 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,959 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,959 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,959 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,960 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,960 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,960 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,961 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,961 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,962 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,962 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:35:17,965 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:35:17,979 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-26 00:35:18,018 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:35:18,018 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:35:18,019 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:35:18,019 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:35:18,019 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:35:18,019 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:35:18,019 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:35:18,020 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:35:18,042 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:35:18,045 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 95 transitions, 195 flow [2020-10-26 00:35:18,048 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 95 transitions, 195 flow [2020-10-26 00:35:18,051 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 95 transitions, 195 flow [2020-10-26 00:35:18,134 INFO L129 PetriNetUnfolder]: 7/94 cut-off events. [2020-10-26 00:35:18,135 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:35:18,140 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 94 events. 7/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 101 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 74. Up to 3 conditions per place. [2020-10-26 00:35:18,144 INFO L116 LiptonReduction]: Number of co-enabled transitions 2400 [2020-10-26 00:35:19,167 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-10-26 00:35:19,973 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 9, 1] term [2020-10-26 00:35:19,974 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 00:35:19,990 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 9, 1] term [2020-10-26 00:35:19,990 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 00:35:20,255 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 9, 1] term [2020-10-26 00:35:20,258 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 00:35:20,269 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 9, 1] term [2020-10-26 00:35:20,269 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 00:35:20,865 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-26 00:35:20,995 INFO L131 LiptonReduction]: Checked pairs total: 2510 [2020-10-26 00:35:20,996 INFO L133 LiptonReduction]: Total number of compositions: 106 [2020-10-26 00:35:21,002 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 14 transitions, 33 flow [2020-10-26 00:35:21,013 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 37 states. [2020-10-26 00:35:21,015 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-26 00:35:21,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-26 00:35:21,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:35:21,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-26 00:35:21,032 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:35:21,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:35:21,039 INFO L82 PathProgramCache]: Analyzing trace with hash 12149914, now seen corresponding path program 1 times [2020-10-26 00:35:21,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:35:21,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146927336] [2020-10-26 00:35:21,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:35:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:35:21,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:35:21,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146927336] [2020-10-26 00:35:21,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:35:21,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 00:35:21,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165119635] [2020-10-26 00:35:21,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:35:21,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:35:21,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:35:21,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:35:21,253 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-26 00:35:21,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:35:21,282 INFO L93 Difference]: Finished difference Result 33 states and 57 transitions. [2020-10-26 00:35:21,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:35:21,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-26 00:35:21,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:35:21,294 INFO L225 Difference]: With dead ends: 33 [2020-10-26 00:35:21,294 INFO L226 Difference]: Without dead ends: 13 [2020-10-26 00:35:21,296 INFO L677 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 [2020-10-26 00:35:21,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-26 00:35:21,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-26 00:35:21,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-26 00:35:21,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2020-10-26 00:35:21,334 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 4 [2020-10-26 00:35:21,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:35:21,334 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-10-26 00:35:21,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:35:21,335 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2020-10-26 00:35:21,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:35:21,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:35:21,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:35:21,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:35:21,336 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:35:21,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:35:21,337 INFO L82 PathProgramCache]: Analyzing trace with hash -2126994706, now seen corresponding path program 1 times [2020-10-26 00:35:21,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:35:21,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707318130] [2020-10-26 00:35:21,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:35:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:35:21,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:35:21,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707318130] [2020-10-26 00:35:21,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:35:21,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 00:35:21,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889058719] [2020-10-26 00:35:21,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:35:21,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:35:21,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:35:21,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:35:21,473 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 6 states. [2020-10-26 00:35:21,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:35:21,509 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-10-26 00:35:21,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:35:21,510 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-10-26 00:35:21,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:35:21,510 INFO L225 Difference]: With dead ends: 15 [2020-10-26 00:35:21,510 INFO L226 Difference]: Without dead ends: 11 [2020-10-26 00:35:21,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:35:21,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-26 00:35:21,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-26 00:35:21,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-26 00:35:21,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-10-26 00:35:21,515 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2020-10-26 00:35:21,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:35:21,515 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-10-26 00:35:21,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:35:21,516 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-10-26 00:35:21,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:35:21,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:35:21,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:35:21,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:35:21,517 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:35:21,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:35:21,518 INFO L82 PathProgramCache]: Analyzing trace with hash -426701370, now seen corresponding path program 2 times [2020-10-26 00:35:21,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:35:21,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144660925] [2020-10-26 00:35:21,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:35:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:35:21,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:35:21,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144660925] [2020-10-26 00:35:21,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:35:21,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 00:35:21,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166541799] [2020-10-26 00:35:21,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:35:21,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:35:21,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:35:21,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:35:21,602 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2020-10-26 00:35:21,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:35:21,631 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-10-26 00:35:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:35:21,632 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-10-26 00:35:21,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:35:21,632 INFO L225 Difference]: With dead ends: 7 [2020-10-26 00:35:21,633 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:35:21,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:35:21,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:35:21,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:35:21,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:35:21,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:35:21,634 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-10-26 00:35:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:35:21,634 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:35:21,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:35:21,635 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:35:21,635 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:35:21,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:35:21,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:35:21 BasicIcfg [2020-10-26 00:35:21,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:35:21,639 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:35:21,639 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:35:21,639 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:35:21,640 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:35:17" (3/4) ... [2020-10-26 00:35:21,643 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:35:21,650 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure BCSP_PnpStop [2020-10-26 00:35:21,655 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-10-26 00:35:21,656 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-26 00:35:21,656 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:35:21,656 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:35:21,711 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:35:21,712 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:35:21,713 INFO L168 Benchmark]: Toolchain (without parser) took 5447.45 ms. Allocated memory was 41.9 MB in the beginning and 96.5 MB in the end (delta: 54.5 MB). Free memory was 26.4 MB in the beginning and 35.9 MB in the end (delta: -9.4 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. [2020-10-26 00:35:21,714 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 41.9 MB. Free memory was 22.5 MB in the beginning and 22.5 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:35:21,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.96 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 25.9 MB in the beginning and 24.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2020-10-26 00:35:21,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.21 ms. Allocated memory is still 50.3 MB. Free memory was 24.6 MB in the beginning and 22.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:35:21,717 INFO L168 Benchmark]: Boogie Preprocessor took 34.39 ms. Allocated memory is still 50.3 MB. Free memory was 22.6 MB in the beginning and 33.2 MB in the end (delta: -10.6 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2020-10-26 00:35:21,717 INFO L168 Benchmark]: RCFGBuilder took 749.98 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 33.2 MB in the beginning and 42.0 MB in the end (delta: -8.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-10-26 00:35:21,719 INFO L168 Benchmark]: TraceAbstraction took 3763.67 ms. Allocated memory was 60.8 MB in the beginning and 96.5 MB in the end (delta: 35.7 MB). Free memory was 41.6 MB in the beginning and 38.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.1 GB. [2020-10-26 00:35:21,719 INFO L168 Benchmark]: Witness Printer took 72.99 ms. Allocated memory is still 96.5 MB. Free memory was 38.8 MB in the beginning and 35.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:35:21,730 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 41.9 MB. Free memory was 22.5 MB in the beginning and 22.5 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 753.96 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 25.9 MB in the beginning and 24.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.21 ms. Allocated memory is still 50.3 MB. Free memory was 24.6 MB in the beginning and 22.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.39 ms. Allocated memory is still 50.3 MB. Free memory was 22.6 MB in the beginning and 33.2 MB in the end (delta: -10.6 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 749.98 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 33.2 MB in the beginning and 42.0 MB in the end (delta: -8.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3763.67 ms. Allocated memory was 60.8 MB in the beginning and 96.5 MB in the end (delta: 35.7 MB). Free memory was 41.6 MB in the beginning and 38.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.1 GB. * Witness Printer took 72.99 ms. Allocated memory is still 96.5 MB. Free memory was 38.8 MB in the beginning and 35.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1721 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 32 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 92 PlacesBefore, 17 PlacesAfterwards, 95 TransitionsBefore, 14 TransitionsAfterwards, 2400 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 6 ChoiceCompositions, 106 TotalNumberOfCompositions, 2510 MoverChecksTotal - PositiveResult [Line: 683]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 23 SDtfs, 13 SDslu, 23 SDs, 0 SdLazy, 40 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 531 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 correct! Received shutdown request...