./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe012_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 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-wmm/safe012_tso.oepc.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 c368bf714b2a378b5c407501fad688f5c7e62a21 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-96f1638 [2020-12-02 12:07:44,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:07:44,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:07:44,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:07:44,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:07:44,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:07:44,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:07:44,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:07:44,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:07:44,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:07:44,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:07:44,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:07:44,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:07:44,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:07:44,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:07:44,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:07:44,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:07:44,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:07:44,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:07:44,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:07:44,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:07:44,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:07:44,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:07:44,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:07:44,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:07:44,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:07:44,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:07:44,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:07:44,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:07:44,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:07:44,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:07:44,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:07:44,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:07:44,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:07:44,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:07:44,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:07:44,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:07:44,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:07:44,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:07:44,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:07:44,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:07:44,154 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:07:44,209 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:07:44,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:07:44,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:07:44,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:07:44,215 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:07:44,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:07:44,216 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:07:44,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:07:44,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:07:44,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:07:44,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:07:44,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:07:44,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:07:44,217 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:07:44,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:07:44,218 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:07:44,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:07:44,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:07:44,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:07:44,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:07:44,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:07:44,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:07:44,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:07:44,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:07:44,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:07:44,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:07:44,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:07:44,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:07:44,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:07:44,222 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c368bf714b2a378b5c407501fad688f5c7e62a21 [2020-12-02 12:07:44,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:07:44,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:07:44,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:07:44,666 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:07:44,667 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:07:44,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe012_tso.oepc.i [2020-12-02 12:07:44,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f112fa47e/16bbaf14a3304978a47ae061542d7ad5/FLAG2f496018a [2020-12-02 12:07:45,522 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:07:45,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe012_tso.oepc.i [2020-12-02 12:07:45,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f112fa47e/16bbaf14a3304978a47ae061542d7ad5/FLAG2f496018a [2020-12-02 12:07:45,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f112fa47e/16bbaf14a3304978a47ae061542d7ad5 [2020-12-02 12:07:45,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:07:45,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:07:45,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:07:45,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:07:45,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:07:45,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:07:45" (1/1) ... [2020-12-02 12:07:45,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db378b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:45, skipping insertion in model container [2020-12-02 12:07:45,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:07:45" (1/1) ... [2020-12-02 12:07:45,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:07:45,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:07:46,114 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe012_tso.oepc.i[950,963] [2020-12-02 12:07:46,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:07:46,349 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:07:46,378 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe012_tso.oepc.i[950,963] [2020-12-02 12:07:46,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:07:46,622 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:07:46,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:46 WrapperNode [2020-12-02 12:07:46,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:07:46,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:07:46,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:07:46,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:07:46,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:46" (1/1) ... [2020-12-02 12:07:46,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:46" (1/1) ... [2020-12-02 12:07:46,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:07:46,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:07:46,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:07:46,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:07:46,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:46" (1/1) ... [2020-12-02 12:07:46,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:46" (1/1) ... [2020-12-02 12:07:46,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:46" (1/1) ... [2020-12-02 12:07:46,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:46" (1/1) ... [2020-12-02 12:07:46,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:46" (1/1) ... [2020-12-02 12:07:46,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:46" (1/1) ... [2020-12-02 12:07:46,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:46" (1/1) ... [2020-12-02 12:07:46,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:07:46,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:07:46,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:07:46,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:07:46,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:46" (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 [2020-12-02 12:07:46,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:07:46,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:07:46,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:07:46,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:07:46,910 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:07:46,910 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:07:46,910 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:07:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:07:46,911 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:07:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:07:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:07:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:07:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:07:46,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:07:46,914 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-02 12:07:47,355 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:07:47,356 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:07:47,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:07:47 BoogieIcfgContainer [2020-12-02 12:07:47,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:07:47,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:07:47,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:07:47,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:07:47,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:07:45" (1/3) ... [2020-12-02 12:07:47,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4927fbaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:07:47, skipping insertion in model container [2020-12-02 12:07:47,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:46" (2/3) ... [2020-12-02 12:07:47,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4927fbaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:07:47, skipping insertion in model container [2020-12-02 12:07:47,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:07:47" (3/3) ... [2020-12-02 12:07:47,368 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.oepc.i [2020-12-02 12:07:47,385 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:07:47,385 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:07:47,390 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:07:47,391 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:07:47,432 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,433 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,433 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,434 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,434 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,434 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,434 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,435 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,435 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,435 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,436 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,436 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,437 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,437 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,437 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,437 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,438 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,438 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,438 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,438 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,439 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,439 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,440 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,440 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,440 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,441 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,441 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,441 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,443 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,444 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,444 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,444 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,450 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,450 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,450 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,453 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,453 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,454 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,454 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:47,456 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:07:47,470 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:07:47,494 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:07:47,494 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:07:47,494 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:07:47,494 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:07:47,494 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:07:47,494 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:07:47,495 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:07:47,495 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:07:47,509 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:07:47,512 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 76 transitions, 167 flow [2020-12-02 12:07:47,515 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 76 transitions, 167 flow [2020-12-02 12:07:47,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2020-12-02 12:07:47,566 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2020-12-02 12:07:47,567 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:07:47,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-02 12:07:47,574 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-02 12:07:51,065 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-12-02 12:07:51,173 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-02 12:07:51,402 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-12-02 12:07:51,529 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-02 12:07:51,824 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-12-02 12:07:51,894 INFO L131 LiptonReduction]: Checked pairs total: 2541 [2020-12-02 12:07:51,895 INFO L133 LiptonReduction]: Total number of compositions: 64 [2020-12-02 12:07:51,902 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-12-02 12:07:51,932 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-02 12:07:51,935 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-02 12:07:51,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:07:51,942 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:51,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:51,944 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:51,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:51,951 INFO L82 PathProgramCache]: Analyzing trace with hash 995547002, now seen corresponding path program 1 times [2020-12-02 12:07:51,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:51,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883412820] [2020-12-02 12:07:51,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:52,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883412820] [2020-12-02 12:07:52,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:52,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:07:52,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737148270] [2020-12-02 12:07:52,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:07:52,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:52,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:07:52,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:07:52,369 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-12-02 12:07:52,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:52,431 INFO L93 Difference]: Finished difference Result 354 states and 982 transitions. [2020-12-02 12:07:52,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:07:52,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-02 12:07:52,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:52,451 INFO L225 Difference]: With dead ends: 354 [2020-12-02 12:07:52,452 INFO L226 Difference]: Without dead ends: 230 [2020-12-02 12:07:52,453 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 [2020-12-02 12:07:52,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-12-02 12:07:52,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-12-02 12:07:52,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-12-02 12:07:52,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-12-02 12:07:52,569 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-12-02 12:07:52,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:52,571 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-12-02 12:07:52,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:07:52,572 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-12-02 12:07:52,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:07:52,574 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:52,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:52,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:07:52,575 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:52,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:52,577 INFO L82 PathProgramCache]: Analyzing trace with hash 755699245, now seen corresponding path program 1 times [2020-12-02 12:07:52,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:52,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124406820] [2020-12-02 12:07:52,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:52,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:52,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124406820] [2020-12-02 12:07:52,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:52,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:07:52,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065196419] [2020-12-02 12:07:52,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:07:52,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:52,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:07:52,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:07:52,730 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 4 states. [2020-12-02 12:07:52,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:52,751 INFO L93 Difference]: Finished difference Result 218 states and 600 transitions. [2020-12-02 12:07:52,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:07:52,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:07:52,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:52,755 INFO L225 Difference]: With dead ends: 218 [2020-12-02 12:07:52,755 INFO L226 Difference]: Without dead ends: 218 [2020-12-02 12:07:52,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:07:52,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-02 12:07:52,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-12-02 12:07:52,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-02 12:07:52,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-12-02 12:07:52,775 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 9 [2020-12-02 12:07:52,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:52,776 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-12-02 12:07:52,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:07:52,776 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-12-02 12:07:52,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:07:52,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:52,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:52,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:07:52,778 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:52,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:52,779 INFO L82 PathProgramCache]: Analyzing trace with hash 797195438, now seen corresponding path program 1 times [2020-12-02 12:07:52,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:52,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929027935] [2020-12-02 12:07:52,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:52,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:52,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929027935] [2020-12-02 12:07:52,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:52,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:07:52,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140142499] [2020-12-02 12:07:52,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:07:52,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:52,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:07:52,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:07:52,840 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-12-02 12:07:52,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:52,863 INFO L93 Difference]: Finished difference Result 206 states and 559 transitions. [2020-12-02 12:07:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:07:52,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:07:52,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:52,867 INFO L225 Difference]: With dead ends: 206 [2020-12-02 12:07:52,867 INFO L226 Difference]: Without dead ends: 206 [2020-12-02 12:07:52,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:07:52,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-02 12:07:52,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-12-02 12:07:52,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-02 12:07:52,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 559 transitions. [2020-12-02 12:07:52,900 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 559 transitions. Word has length 9 [2020-12-02 12:07:52,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:52,901 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 559 transitions. [2020-12-02 12:07:52,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:07:52,902 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 559 transitions. [2020-12-02 12:07:52,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:07:52,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:52,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:52,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:07:52,909 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:52,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:52,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1951849563, now seen corresponding path program 1 times [2020-12-02 12:07:52,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:52,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397467328] [2020-12-02 12:07:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:53,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397467328] [2020-12-02 12:07:53,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:53,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:07:53,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072245509] [2020-12-02 12:07:53,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:07:53,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:53,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:07:53,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:07:53,023 INFO L87 Difference]: Start difference. First operand 206 states and 559 transitions. Second operand 4 states. [2020-12-02 12:07:53,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:53,057 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-12-02 12:07:53,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:07:53,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-02 12:07:53,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:53,060 INFO L225 Difference]: With dead ends: 242 [2020-12-02 12:07:53,060 INFO L226 Difference]: Without dead ends: 116 [2020-12-02 12:07:53,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:07:53,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-02 12:07:53,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-12-02 12:07:53,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-02 12:07:53,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-12-02 12:07:53,086 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 10 [2020-12-02 12:07:53,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:53,087 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-12-02 12:07:53,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:07:53,088 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-12-02 12:07:53,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:07:53,095 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:53,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:53,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:07:53,099 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:53,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:53,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1600577641, now seen corresponding path program 1 times [2020-12-02 12:07:53,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:53,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493668746] [2020-12-02 12:07:53,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:53,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493668746] [2020-12-02 12:07:53,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:53,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:07:53,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620956304] [2020-12-02 12:07:53,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:07:53,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:53,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:07:53,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:07:53,199 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 4 states. [2020-12-02 12:07:53,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:53,222 INFO L93 Difference]: Finished difference Result 140 states and 326 transitions. [2020-12-02 12:07:53,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:07:53,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:07:53,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:53,223 INFO L225 Difference]: With dead ends: 140 [2020-12-02 12:07:53,224 INFO L226 Difference]: Without dead ends: 68 [2020-12-02 12:07:53,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:07:53,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-02 12:07:53,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-12-02 12:07:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-02 12:07:53,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-12-02 12:07:53,230 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 11 [2020-12-02 12:07:53,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:53,231 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-12-02 12:07:53,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:07:53,231 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-12-02 12:07:53,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:07:53,233 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:53,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:53,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:07:53,233 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:53,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:53,234 INFO L82 PathProgramCache]: Analyzing trace with hash -936336033, now seen corresponding path program 1 times [2020-12-02 12:07:53,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:53,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953749614] [2020-12-02 12:07:53,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:53,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953749614] [2020-12-02 12:07:53,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:53,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:07:53,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842501196] [2020-12-02 12:07:53,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:07:53,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:53,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:07:53,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:07:53,352 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-12-02 12:07:53,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:53,384 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-12-02 12:07:53,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:07:53,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-02 12:07:53,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:53,386 INFO L225 Difference]: With dead ends: 81 [2020-12-02 12:07:53,386 INFO L226 Difference]: Without dead ends: 59 [2020-12-02 12:07:53,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:07:53,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-02 12:07:53,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-12-02 12:07:53,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-02 12:07:53,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-12-02 12:07:53,389 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-12-02 12:07:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:53,390 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-12-02 12:07:53,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:07:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-12-02 12:07:53,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:07:53,391 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:53,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:53,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:07:53,391 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:53,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:53,392 INFO L82 PathProgramCache]: Analyzing trace with hash -316991516, now seen corresponding path program 1 times [2020-12-02 12:07:53,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:53,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991676166] [2020-12-02 12:07:53,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:53,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991676166] [2020-12-02 12:07:53,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:53,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:07:53,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877250194] [2020-12-02 12:07:53,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:07:53,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:53,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:07:53,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:07:53,447 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-12-02 12:07:53,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:53,484 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-12-02 12:07:53,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:07:53,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-02 12:07:53,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:53,486 INFO L225 Difference]: With dead ends: 60 [2020-12-02 12:07:53,486 INFO L226 Difference]: Without dead ends: 45 [2020-12-02 12:07:53,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:07:53,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-02 12:07:53,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-02 12:07:53,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-02 12:07:53,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-12-02 12:07:53,489 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-12-02 12:07:53,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:53,489 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-12-02 12:07:53,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:07:53,490 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-12-02 12:07:53,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:07:53,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:53,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:53,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:07:53,491 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:53,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:53,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1258778714, now seen corresponding path program 1 times [2020-12-02 12:07:53,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:53,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639904529] [2020-12-02 12:07:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:53,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:53,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639904529] [2020-12-02 12:07:53,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:53,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:07:53,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944191828] [2020-12-02 12:07:53,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:07:53,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:53,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:07:53,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:07:53,548 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-12-02 12:07:53,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:53,615 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-12-02 12:07:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:07:53,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-02 12:07:53,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:53,616 INFO L225 Difference]: With dead ends: 42 [2020-12-02 12:07:53,616 INFO L226 Difference]: Without dead ends: 36 [2020-12-02 12:07:53,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:07:53,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-02 12:07:53,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-02 12:07:53,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-02 12:07:53,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-12-02 12:07:53,618 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-12-02 12:07:53,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:53,619 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-12-02 12:07:53,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:07:53,619 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-12-02 12:07:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-02 12:07:53,619 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:53,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:53,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:07:53,620 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:53,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:53,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1439842373, now seen corresponding path program 1 times [2020-12-02 12:07:53,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:53,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882186290] [2020-12-02 12:07:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:53,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:53,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882186290] [2020-12-02 12:07:53,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:53,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:07:53,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754721074] [2020-12-02 12:07:53,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:07:53,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:53,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:07:53,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:07:53,670 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-12-02 12:07:53,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:53,688 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-12-02 12:07:53,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:07:53,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-02 12:07:53,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:53,689 INFO L225 Difference]: With dead ends: 35 [2020-12-02 12:07:53,689 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:07:53,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:07:53,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:07:53,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:07:53,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:07:53,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:07:53,691 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-02 12:07:53,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:53,691 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:07:53,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:07:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:07:53,691 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:07:53,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:07:53,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:07:53 BasicIcfg [2020-12-02 12:07:53,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:07:53,696 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:07:53,696 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:07:53,696 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:07:53,697 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:07:47" (3/4) ... [2020-12-02 12:07:53,701 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:07:53,709 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:07:53,709 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:07:53,709 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:07:53,722 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:07:53,722 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:07:53,723 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:07:53,723 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:07:53,797 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:07:53,798 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:07:53,802 INFO L168 Benchmark]: Toolchain (without parser) took 8038.75 ms. Allocated memory was 46.1 MB in the beginning and 130.0 MB in the end (delta: 83.9 MB). Free memory was 21.3 MB in the beginning and 87.8 MB in the end (delta: -66.5 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:07:53,803 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 46.1 MB. Free memory was 27.8 MB in the beginning and 27.7 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:07:53,804 INFO L168 Benchmark]: CACSL2BoogieTranslator took 863.65 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 21.1 MB in the beginning and 38.2 MB in the end (delta: -17.1 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2020-12-02 12:07:53,804 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.36 ms. Allocated memory is still 58.7 MB. Free memory was 38.0 MB in the beginning and 36.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:07:53,805 INFO L168 Benchmark]: Boogie Preprocessor took 68.60 ms. Allocated memory is still 58.7 MB. Free memory was 36.1 MB in the beginning and 34.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:07:53,805 INFO L168 Benchmark]: RCFGBuilder took 563.06 ms. Allocated memory is still 58.7 MB. Free memory was 34.6 MB in the beginning and 26.4 MB in the end (delta: 8.3 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:07:53,805 INFO L168 Benchmark]: TraceAbstraction took 6334.96 ms. Allocated memory was 58.7 MB in the beginning and 130.0 MB in the end (delta: 71.3 MB). Free memory was 26.1 MB in the beginning and 89.8 MB in the end (delta: -63.7 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-12-02 12:07:53,806 INFO L168 Benchmark]: Witness Printer took 101.95 ms. Allocated memory is still 130.0 MB. Free memory was 89.8 MB in the beginning and 87.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:07:53,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 46.1 MB. Free memory was 27.8 MB in the beginning and 27.7 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 863.65 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 21.1 MB in the beginning and 38.2 MB in the end (delta: -17.1 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.36 ms. Allocated memory is still 58.7 MB. Free memory was 38.0 MB in the beginning and 36.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.60 ms. Allocated memory is still 58.7 MB. Free memory was 36.1 MB in the beginning and 34.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 563.06 ms. Allocated memory is still 58.7 MB. Free memory was 34.6 MB in the beginning and 26.4 MB in the end (delta: 8.3 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6334.96 ms. Allocated memory was 58.7 MB in the beginning and 130.0 MB in the end (delta: 71.3 MB). Free memory was 26.1 MB in the beginning and 89.8 MB in the end (delta: -63.7 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Witness Printer took 101.95 ms. Allocated memory is still 130.0 MB. Free memory was 89.8 MB in the beginning and 87.8 MB in the end (delta: 2.1 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 837 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 58 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.3s, 84 PlacesBefore, 31 PlacesAfterwards, 76 TransitionsBefore, 21 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 64 TotalNumberOfCompositions, 2541 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 144 SDtfs, 182 SDslu, 131 SDs, 0 SdLazy, 74 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 5262 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...