./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe015_pso.opt.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/safe015_pso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e9b1c96eed0367583bf25a0e47ad0463a90fc1bd .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 12:08:20,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:08:20,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:08:20,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:08:20,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:08:20,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:08:20,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:08:20,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:08:20,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:08:20,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:08:20,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:08:20,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:08:20,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:08:20,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:08:20,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:08:20,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:08:20,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:08:20,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:08:20,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:08:20,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:08:20,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:08:20,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:08:20,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:08:20,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:08:20,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:08:20,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:08:20,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:08:20,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:08:20,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:08:20,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:08:20,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:08:20,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:08:20,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:08:20,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:08:20,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:08:20,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:08:20,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:08:20,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:08:20,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:08:20,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:08:20,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:08:20,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:08:20,293 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:08:20,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:08:20,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:08:20,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:08:20,296 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:08:20,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:08:20,297 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:08:20,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:08:20,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:08:20,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:08:20,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:08:20,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:08:20,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:08:20,299 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:08:20,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:08:20,299 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:08:20,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:08:20,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:08:20,300 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:08:20,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:08:20,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:08:20,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:08:20,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:08:20,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:08:20,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:08:20,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:08:20,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:08:20,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:08:20,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:08:20,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9b1c96eed0367583bf25a0e47ad0463a90fc1bd [2020-12-02 12:08:20,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:08:20,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:08:20,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:08:20,739 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:08:20,741 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:08:20,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i [2020-12-02 12:08:20,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3869f7117/3671ed4dff8149c0bd8dc60a555638ea/FLAG1f8613757 [2020-12-02 12:08:21,595 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:08:21,596 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i [2020-12-02 12:08:21,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3869f7117/3671ed4dff8149c0bd8dc60a555638ea/FLAG1f8613757 [2020-12-02 12:08:21,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3869f7117/3671ed4dff8149c0bd8dc60a555638ea [2020-12-02 12:08:21,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:08:21,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:08:21,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:08:21,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:08:21,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:08:21,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:08:21" (1/1) ... [2020-12-02 12:08:21,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@588b2ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:21, skipping insertion in model container [2020-12-02 12:08:21,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:08:21" (1/1) ... [2020-12-02 12:08:21,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:08:21,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:08:22,135 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/safe015_pso.opt.i[949,962] [2020-12-02 12:08:22,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:08:22,458 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:08:22,477 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/safe015_pso.opt.i[949,962] [2020-12-02 12:08:22,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:08:22,663 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:08:22,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:22 WrapperNode [2020-12-02 12:08:22,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:08:22,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:08:22,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:08:22,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:08:22,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:22" (1/1) ... [2020-12-02 12:08:22,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:22" (1/1) ... [2020-12-02 12:08:22,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:08:22,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:08:22,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:08:22,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:08:22,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:22" (1/1) ... [2020-12-02 12:08:22,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:22" (1/1) ... [2020-12-02 12:08:22,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:22" (1/1) ... [2020-12-02 12:08:22,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:22" (1/1) ... [2020-12-02 12:08:22,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:22" (1/1) ... [2020-12-02 12:08:22,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:22" (1/1) ... [2020-12-02 12:08:22,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:22" (1/1) ... [2020-12-02 12:08:22,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:08:22,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:08:22,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:08:22,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:08:22,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:22" (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 12:08:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:08:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:08:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:08:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:08:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:08:22,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:08:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:08:22,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:08:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:08:22,867 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:08:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:08:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:08:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:08:22,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:08:22,869 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 12:08:23,310 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:08:23,311 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:08:23,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:08:23 BoogieIcfgContainer [2020-12-02 12:08:23,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:08:23,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:08:23,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:08:23,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:08:23,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:08:21" (1/3) ... [2020-12-02 12:08:23,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d75fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:08:23, skipping insertion in model container [2020-12-02 12:08:23,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:22" (2/3) ... [2020-12-02 12:08:23,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d75fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:08:23, skipping insertion in model container [2020-12-02 12:08:23,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:08:23" (3/3) ... [2020-12-02 12:08:23,331 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-12-02 12:08:23,351 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:08:23,351 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:08:23,367 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:08:23,370 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:08:23,429 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,430 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,430 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,430 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,430 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,431 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,431 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,431 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,432 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,432 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,432 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,432 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,434 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,435 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,435 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,435 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,436 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,437 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,437 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,437 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,438 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,439 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,442 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,442 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,443 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,443 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,444 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,444 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,445 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,446 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,446 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,447 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,448 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,448 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,452 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,453 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,453 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,454 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,460 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,461 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,468 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,469 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,469 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,470 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:23,474 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:08:23,490 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:08:23,538 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:08:23,538 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:08:23,539 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:08:23,539 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:08:23,539 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:08:23,539 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:08:23,540 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:08:23,540 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:08:23,562 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:08:23,566 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-02 12:08:23,571 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-02 12:08:23,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-02 12:08:23,674 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-02 12:08:23,674 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:08:23,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-02 12:08:23,701 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-02 12:08:26,433 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-02 12:08:26,704 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-02 12:08:27,019 INFO L131 LiptonReduction]: Checked pairs total: 2553 [2020-12-02 12:08:27,020 INFO L133 LiptonReduction]: Total number of compositions: 64 [2020-12-02 12:08:27,027 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-12-02 12:08:27,055 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-02 12:08:27,058 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-02 12:08:27,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:08:27,066 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:27,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:27,068 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:27,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:27,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1555009458, now seen corresponding path program 1 times [2020-12-02 12:08:27,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:27,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199333127] [2020-12-02 12:08:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:27,430 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 12:08:27,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199333127] [2020-12-02 12:08:27,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:27,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:08:27,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785381495] [2020-12-02 12:08:27,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:08:27,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:27,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:08:27,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:08:27,458 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-12-02 12:08:27,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:27,520 INFO L93 Difference]: Finished difference Result 457 states and 1253 transitions. [2020-12-02 12:08:27,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:08:27,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-02 12:08:27,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:27,541 INFO L225 Difference]: With dead ends: 457 [2020-12-02 12:08:27,542 INFO L226 Difference]: Without dead ends: 315 [2020-12-02 12:08:27,543 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 12:08:27,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-12-02 12:08:27,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 280. [2020-12-02 12:08:27,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-12-02 12:08:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 739 transitions. [2020-12-02 12:08:27,649 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 739 transitions. Word has length 8 [2020-12-02 12:08:27,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:27,651 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 739 transitions. [2020-12-02 12:08:27,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:08:27,651 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 739 transitions. [2020-12-02 12:08:27,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:08:27,654 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:27,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:27,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:08:27,656 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:27,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:27,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1099271783, now seen corresponding path program 1 times [2020-12-02 12:08:27,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:27,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201145773] [2020-12-02 12:08:27,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:27,836 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 12:08:27,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201145773] [2020-12-02 12:08:27,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:27,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:08:27,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573026725] [2020-12-02 12:08:27,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:08:27,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:27,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:08:27,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:27,840 INFO L87 Difference]: Start difference. First operand 280 states and 739 transitions. Second operand 4 states. [2020-12-02 12:08:27,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:27,871 INFO L93 Difference]: Finished difference Result 293 states and 749 transitions. [2020-12-02 12:08:27,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:08:27,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:08:27,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:27,876 INFO L225 Difference]: With dead ends: 293 [2020-12-02 12:08:27,876 INFO L226 Difference]: Without dead ends: 293 [2020-12-02 12:08:27,877 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 12:08:27,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-12-02 12:08:27,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 257. [2020-12-02 12:08:27,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-12-02 12:08:27,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 671 transitions. [2020-12-02 12:08:27,897 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 671 transitions. Word has length 9 [2020-12-02 12:08:27,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:27,897 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 671 transitions. [2020-12-02 12:08:27,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:08:27,897 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 671 transitions. [2020-12-02 12:08:27,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:08:27,899 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:27,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:27,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:08:27,900 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:27,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:27,900 INFO L82 PathProgramCache]: Analyzing trace with hash -285096968, now seen corresponding path program 1 times [2020-12-02 12:08:27,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:27,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317543988] [2020-12-02 12:08:27,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:27,969 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 12:08:27,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317543988] [2020-12-02 12:08:27,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:27,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:08:27,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600762648] [2020-12-02 12:08:27,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:08:27,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:27,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:08:27,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:27,972 INFO L87 Difference]: Start difference. First operand 257 states and 671 transitions. Second operand 4 states. [2020-12-02 12:08:28,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:28,008 INFO L93 Difference]: Finished difference Result 282 states and 718 transitions. [2020-12-02 12:08:28,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:08:28,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-02 12:08:28,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:28,012 INFO L225 Difference]: With dead ends: 282 [2020-12-02 12:08:28,013 INFO L226 Difference]: Without dead ends: 282 [2020-12-02 12:08:28,013 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 12:08:28,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-12-02 12:08:28,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 248. [2020-12-02 12:08:28,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-12-02 12:08:28,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 641 transitions. [2020-12-02 12:08:28,047 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 641 transitions. Word has length 10 [2020-12-02 12:08:28,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:28,049 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 641 transitions. [2020-12-02 12:08:28,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:08:28,049 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 641 transitions. [2020-12-02 12:08:28,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:08:28,051 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:28,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:28,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:08:28,052 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:28,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:28,052 INFO L82 PathProgramCache]: Analyzing trace with hash -285109461, now seen corresponding path program 1 times [2020-12-02 12:08:28,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:28,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615208529] [2020-12-02 12:08:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:28,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615208529] [2020-12-02 12:08:28,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:28,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:08:28,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278993576] [2020-12-02 12:08:28,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:08:28,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:28,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:08:28,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:28,119 INFO L87 Difference]: Start difference. First operand 248 states and 641 transitions. Second operand 4 states. [2020-12-02 12:08:28,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:28,156 INFO L93 Difference]: Finished difference Result 264 states and 666 transitions. [2020-12-02 12:08:28,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:08:28,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-02 12:08:28,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:28,161 INFO L225 Difference]: With dead ends: 264 [2020-12-02 12:08:28,162 INFO L226 Difference]: Without dead ends: 264 [2020-12-02 12:08:28,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 12:08:28,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-12-02 12:08:28,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 222. [2020-12-02 12:08:28,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-02 12:08:28,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 562 transitions. [2020-12-02 12:08:28,189 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 562 transitions. Word has length 10 [2020-12-02 12:08:28,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:28,190 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 562 transitions. [2020-12-02 12:08:28,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:08:28,194 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 562 transitions. [2020-12-02 12:08:28,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:08:28,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:28,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:28,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:08:28,208 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:28,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:28,212 INFO L82 PathProgramCache]: Analyzing trace with hash -162369203, now seen corresponding path program 1 times [2020-12-02 12:08:28,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:28,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365391648] [2020-12-02 12:08:28,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:28,308 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 12:08:28,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365391648] [2020-12-02 12:08:28,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:28,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:08:28,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124294927] [2020-12-02 12:08:28,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:08:28,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:28,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:08:28,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:28,313 INFO L87 Difference]: Start difference. First operand 222 states and 562 transitions. Second operand 4 states. [2020-12-02 12:08:28,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:28,339 INFO L93 Difference]: Finished difference Result 252 states and 633 transitions. [2020-12-02 12:08:28,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:08:28,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:08:28,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:28,343 INFO L225 Difference]: With dead ends: 252 [2020-12-02 12:08:28,343 INFO L226 Difference]: Without dead ends: 252 [2020-12-02 12:08:28,344 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 12:08:28,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-12-02 12:08:28,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 200. [2020-12-02 12:08:28,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-12-02 12:08:28,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 507 transitions. [2020-12-02 12:08:28,354 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 507 transitions. Word has length 11 [2020-12-02 12:08:28,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:28,354 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 507 transitions. [2020-12-02 12:08:28,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:08:28,354 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 507 transitions. [2020-12-02 12:08:28,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:08:28,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:28,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:28,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:08:28,357 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:28,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:28,357 INFO L82 PathProgramCache]: Analyzing trace with hash -732205193, now seen corresponding path program 1 times [2020-12-02 12:08:28,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:28,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4626045] [2020-12-02 12:08:28,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:28,422 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 12:08:28,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4626045] [2020-12-02 12:08:28,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:28,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:08:28,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010518582] [2020-12-02 12:08:28,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:08:28,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:28,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:08:28,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:28,425 INFO L87 Difference]: Start difference. First operand 200 states and 507 transitions. Second operand 5 states. [2020-12-02 12:08:28,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:28,469 INFO L93 Difference]: Finished difference Result 304 states and 741 transitions. [2020-12-02 12:08:28,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:08:28,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:08:28,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:28,472 INFO L225 Difference]: With dead ends: 304 [2020-12-02 12:08:28,472 INFO L226 Difference]: Without dead ends: 200 [2020-12-02 12:08:28,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:08:28,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-12-02 12:08:28,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 176. [2020-12-02 12:08:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-12-02 12:08:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 429 transitions. [2020-12-02 12:08:28,481 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 429 transitions. Word has length 12 [2020-12-02 12:08:28,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:28,481 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 429 transitions. [2020-12-02 12:08:28,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:08:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 429 transitions. [2020-12-02 12:08:28,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:08:28,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:28,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:28,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:08:28,483 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:28,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:28,483 INFO L82 PathProgramCache]: Analyzing trace with hash -737567573, now seen corresponding path program 2 times [2020-12-02 12:08:28,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:28,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917516460] [2020-12-02 12:08:28,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:28,538 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 12:08:28,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917516460] [2020-12-02 12:08:28,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:28,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:08:28,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031930966] [2020-12-02 12:08:28,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:08:28,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:28,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:08:28,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:28,540 INFO L87 Difference]: Start difference. First operand 176 states and 429 transitions. Second operand 5 states. [2020-12-02 12:08:28,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:28,577 INFO L93 Difference]: Finished difference Result 228 states and 521 transitions. [2020-12-02 12:08:28,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:08:28,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:08:28,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:28,579 INFO L225 Difference]: With dead ends: 228 [2020-12-02 12:08:28,580 INFO L226 Difference]: Without dead ends: 148 [2020-12-02 12:08:28,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:08:28,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-02 12:08:28,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 124. [2020-12-02 12:08:28,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-02 12:08:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 279 transitions. [2020-12-02 12:08:28,586 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 279 transitions. Word has length 12 [2020-12-02 12:08:28,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:28,586 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 279 transitions. [2020-12-02 12:08:28,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:08:28,586 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 279 transitions. [2020-12-02 12:08:28,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:08:28,587 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:28,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:28,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:08:28,587 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:28,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:28,588 INFO L82 PathProgramCache]: Analyzing trace with hash -738490133, now seen corresponding path program 3 times [2020-12-02 12:08:28,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:28,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811524655] [2020-12-02 12:08:28,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:28,639 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 12:08:28,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811524655] [2020-12-02 12:08:28,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:28,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:08:28,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329267612] [2020-12-02 12:08:28,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:08:28,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:28,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:08:28,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:28,642 INFO L87 Difference]: Start difference. First operand 124 states and 279 transitions. Second operand 4 states. [2020-12-02 12:08:28,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:28,684 INFO L93 Difference]: Finished difference Result 138 states and 286 transitions. [2020-12-02 12:08:28,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:08:28,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-02 12:08:28,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:28,688 INFO L225 Difference]: With dead ends: 138 [2020-12-02 12:08:28,689 INFO L226 Difference]: Without dead ends: 106 [2020-12-02 12:08:28,689 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 12:08:28,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-02 12:08:28,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-12-02 12:08:28,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-02 12:08:28,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 218 transitions. [2020-12-02 12:08:28,694 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 218 transitions. Word has length 12 [2020-12-02 12:08:28,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:28,694 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 218 transitions. [2020-12-02 12:08:28,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:08:28,694 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 218 transitions. [2020-12-02 12:08:28,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:08:28,695 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:28,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:28,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:08:28,695 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:28,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:28,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1418345754, now seen corresponding path program 1 times [2020-12-02 12:08:28,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:28,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996888160] [2020-12-02 12:08:28,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:28,748 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 12:08:28,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996888160] [2020-12-02 12:08:28,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:28,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:08:28,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107456029] [2020-12-02 12:08:28,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:08:28,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:28,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:08:28,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:28,751 INFO L87 Difference]: Start difference. First operand 106 states and 218 transitions. Second operand 5 states. [2020-12-02 12:08:28,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:28,801 INFO L93 Difference]: Finished difference Result 101 states and 198 transitions. [2020-12-02 12:08:28,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:08:28,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:08:28,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:28,803 INFO L225 Difference]: With dead ends: 101 [2020-12-02 12:08:28,803 INFO L226 Difference]: Without dead ends: 81 [2020-12-02 12:08:28,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:08:28,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-02 12:08:28,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-12-02 12:08:28,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-02 12:08:28,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 157 transitions. [2020-12-02 12:08:28,808 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 157 transitions. Word has length 13 [2020-12-02 12:08:28,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:28,808 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 157 transitions. [2020-12-02 12:08:28,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:08:28,808 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 157 transitions. [2020-12-02 12:08:28,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:08:28,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:28,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:28,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:08:28,810 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:28,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:28,810 INFO L82 PathProgramCache]: Analyzing trace with hash -226822936, now seen corresponding path program 1 times [2020-12-02 12:08:28,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:28,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094594388] [2020-12-02 12:08:28,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:28,871 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 12:08:28,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094594388] [2020-12-02 12:08:28,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:28,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:08:28,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024357583] [2020-12-02 12:08:28,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:08:28,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:28,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:08:28,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:08:28,874 INFO L87 Difference]: Start difference. First operand 81 states and 157 transitions. Second operand 6 states. [2020-12-02 12:08:28,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:28,912 INFO L93 Difference]: Finished difference Result 76 states and 151 transitions. [2020-12-02 12:08:28,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:08:28,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-02 12:08:28,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:28,912 INFO L225 Difference]: With dead ends: 76 [2020-12-02 12:08:28,913 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:08:28,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:08:28,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:08:28,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:08:28,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:08:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:08:28,915 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-02 12:08:28,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:28,916 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:08:28,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:08:28,917 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:08:28,917 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:08:28,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:08:28,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:08:28 BasicIcfg [2020-12-02 12:08:28,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:08:28,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:08:28,922 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:08:28,922 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:08:28,923 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:08:23" (3/4) ... [2020-12-02 12:08:28,927 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:08:28,937 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:08:28,937 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:08:28,937 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:08:28,944 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:08:28,944 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:08:28,945 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:08:28,945 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:08:29,012 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:08:29,013 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:08:29,014 INFO L168 Benchmark]: Toolchain (without parser) took 7173.63 ms. Allocated memory was 41.9 MB in the beginning and 121.6 MB in the end (delta: 79.7 MB). Free memory was 18.1 MB in the beginning and 63.3 MB in the end (delta: -45.2 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:29,015 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 41.9 MB. Free memory is still 24.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:08:29,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 817.27 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 17.8 MB in the beginning and 35.0 MB in the end (delta: -17.2 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:29,017 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.07 ms. Allocated memory is still 54.5 MB. Free memory was 34.8 MB in the beginning and 33.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:29,019 INFO L168 Benchmark]: Boogie Preprocessor took 29.67 ms. Allocated memory is still 54.5 MB. Free memory was 33.0 MB in the beginning and 31.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:08:29,020 INFO L168 Benchmark]: RCFGBuilder took 561.94 ms. Allocated memory is still 54.5 MB. Free memory was 31.5 MB in the beginning and 23.5 MB in the end (delta: 7.9 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:29,020 INFO L168 Benchmark]: TraceAbstraction took 5601.35 ms. Allocated memory was 54.5 MB in the beginning and 121.6 MB in the end (delta: 67.1 MB). Free memory was 23.0 MB in the beginning and 66.4 MB in the end (delta: -43.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:29,021 INFO L168 Benchmark]: Witness Printer took 91.35 ms. Allocated memory is still 121.6 MB. Free memory was 66.4 MB in the beginning and 63.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:29,029 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 41.9 MB. Free memory is still 24.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 817.27 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 17.8 MB in the beginning and 35.0 MB in the end (delta: -17.2 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.07 ms. Allocated memory is still 54.5 MB. Free memory was 34.8 MB in the beginning and 33.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.67 ms. Allocated memory is still 54.5 MB. Free memory was 33.0 MB in the beginning and 31.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 561.94 ms. Allocated memory is still 54.5 MB. Free memory was 31.5 MB in the beginning and 23.5 MB in the end (delta: 7.9 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5601.35 ms. Allocated memory was 54.5 MB in the beginning and 121.6 MB in the end (delta: 67.1 MB). Free memory was 23.0 MB in the beginning and 66.4 MB in the end (delta: -43.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. * Witness Printer took 91.35 ms. Allocated memory is still 121.6 MB. Free memory was 66.4 MB in the beginning and 63.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 796 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 57 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.4s, 82 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 22 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2553 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, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 187 SDtfs, 205 SDslu, 256 SDs, 0 SdLazy, 143 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 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, 10 MinimizatonAttempts, 247 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 5766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...