./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe010_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/safe010_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 4b3d9e30c58a8f6799b9b6c32f33065901bf03c9 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 12:07:12,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:07:12,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:07:12,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:07:12,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:07:12,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:07:12,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:07:12,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:07:12,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:07:12,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:07:12,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:07:12,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:07:12,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:07:12,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:07:12,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:07:12,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:07:12,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:07:12,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:07:12,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:07:12,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:07:12,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:07:12,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:07:12,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:07:12,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:07:12,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:07:12,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:07:12,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:07:12,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:07:12,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:07:12,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:07:12,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:07:12,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:07:12,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:07:12,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:07:12,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:07:12,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:07:12,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:07:12,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:07:12,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:07:12,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:07:12,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:07:12,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:07:12,286 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:07:12,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:07:12,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:07:12,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:07:12,291 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:07:12,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:07:12,291 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:07:12,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:07:12,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:07:12,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:07:12,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:07:12,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:07:12,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:07:12,294 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:07:12,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:07:12,294 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:07:12,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:07:12,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:07:12,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:07:12,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:07:12,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:07:12,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:07:12,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:07:12,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:07:12,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:07:12,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:07:12,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:07:12,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:07:12,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:07:12,298 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b3d9e30c58a8f6799b9b6c32f33065901bf03c9 [2020-12-02 12:07:12,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:07:12,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:07:12,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:07:12,809 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:07:12,810 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:07:12,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe010_tso.oepc.i [2020-12-02 12:07:12,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d70f2a4f/c41b2447c2c44109b780c5b38051ce87/FLAG534878443 [2020-12-02 12:07:13,704 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:07:13,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe010_tso.oepc.i [2020-12-02 12:07:13,725 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d70f2a4f/c41b2447c2c44109b780c5b38051ce87/FLAG534878443 [2020-12-02 12:07:13,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d70f2a4f/c41b2447c2c44109b780c5b38051ce87 [2020-12-02 12:07:13,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:07:13,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:07:13,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:07:13,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:07:13,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:07:13,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:07:13" (1/1) ... [2020-12-02 12:07:14,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ed063f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:13, skipping insertion in model container [2020-12-02 12:07:14,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:07:13" (1/1) ... [2020-12-02 12:07:14,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:07:14,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:07:14,385 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/safe010_tso.oepc.i[950,963] [2020-12-02 12:07:14,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:07:14,594 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:07:14,608 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/safe010_tso.oepc.i[950,963] [2020-12-02 12:07:14,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:07:14,775 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:07:14,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:14 WrapperNode [2020-12-02 12:07:14,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:07:14,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:07:14,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:07:14,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:07:14,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:14" (1/1) ... [2020-12-02 12:07:14,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:14" (1/1) ... [2020-12-02 12:07:14,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:07:14,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:07:14,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:07:14,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:07:14,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:14" (1/1) ... [2020-12-02 12:07:14,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:14" (1/1) ... [2020-12-02 12:07:14,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:14" (1/1) ... [2020-12-02 12:07:14,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:14" (1/1) ... [2020-12-02 12:07:14,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:14" (1/1) ... [2020-12-02 12:07:14,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:14" (1/1) ... [2020-12-02 12:07:14,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:14" (1/1) ... [2020-12-02 12:07:14,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:07:14,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:07:14,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:07:14,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:07:14,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:14" (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 12:07:15,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:07:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:07:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:07:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:07:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:07:15,016 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:07:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:07:15,017 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:07:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:07:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:07:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:07:15,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:07:15,019 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 12:07:15,477 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:07:15,478 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:07:15,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:07:15 BoogieIcfgContainer [2020-12-02 12:07:15,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:07:15,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:07:15,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:07:15,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:07:15,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:07:13" (1/3) ... [2020-12-02 12:07:15,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325e5b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:07:15, skipping insertion in model container [2020-12-02 12:07:15,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:14" (2/3) ... [2020-12-02 12:07:15,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325e5b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:07:15, skipping insertion in model container [2020-12-02 12:07:15,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:07:15" (3/3) ... [2020-12-02 12:07:15,489 INFO L111 eAbstractionObserver]: Analyzing ICFG safe010_tso.oepc.i [2020-12-02 12:07:15,508 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:07:15,509 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:07:15,514 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:07:15,515 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:07:15,546 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,546 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,547 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,547 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,548 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,548 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,549 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,551 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,554 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,555 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,555 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,555 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,561 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,561 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:15,564 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:07:15,579 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-02 12:07:15,607 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:07:15,607 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:07:15,607 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:07:15,608 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:07:15,608 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:07:15,608 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:07:15,608 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:07:15,608 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:07:15,623 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:07:15,626 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 60 transitions, 130 flow [2020-12-02 12:07:15,629 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 60 transitions, 130 flow [2020-12-02 12:07:15,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 60 transitions, 130 flow [2020-12-02 12:07:15,684 INFO L129 PetriNetUnfolder]: 2/58 cut-off events. [2020-12-02 12:07:15,684 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:07:15,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 58 events. 2/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2020-12-02 12:07:15,691 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2020-12-02 12:07:18,463 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-02 12:07:18,772 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-02 12:07:18,891 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-12-02 12:07:18,923 INFO L131 LiptonReduction]: Checked pairs total: 1378 [2020-12-02 12:07:18,924 INFO L133 LiptonReduction]: Total number of compositions: 55 [2020-12-02 12:07:18,931 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 16 transitions, 42 flow [2020-12-02 12:07:18,946 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-12-02 12:07:18,949 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-12-02 12:07:18,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-02 12:07:18,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:18,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-02 12:07:18,957 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:18,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:18,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1925010784, now seen corresponding path program 1 times [2020-12-02 12:07:18,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:18,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987594299] [2020-12-02 12:07:18,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:19,367 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 12:07:19,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987594299] [2020-12-02 12:07:19,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:19,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:07:19,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204632412] [2020-12-02 12:07:19,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:07:19,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:19,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:07:19,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:07:19,397 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-12-02 12:07:19,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:19,433 INFO L93 Difference]: Finished difference Result 104 states and 207 transitions. [2020-12-02 12:07:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:07:19,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-02 12:07:19,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:19,446 INFO L225 Difference]: With dead ends: 104 [2020-12-02 12:07:19,446 INFO L226 Difference]: Without dead ends: 63 [2020-12-02 12:07:19,448 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 12:07:19,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-02 12:07:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2020-12-02 12:07:19,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-02 12:07:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 109 transitions. [2020-12-02 12:07:19,494 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 109 transitions. Word has length 6 [2020-12-02 12:07:19,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:19,494 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 109 transitions. [2020-12-02 12:07:19,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:07:19,495 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 109 transitions. [2020-12-02 12:07:19,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-02 12:07:19,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:19,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:19,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:07:19,497 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:19,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:19,498 INFO L82 PathProgramCache]: Analyzing trace with hash 454629136, now seen corresponding path program 1 times [2020-12-02 12:07:19,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:19,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585859398] [2020-12-02 12:07:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:19,587 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 12:07:19,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585859398] [2020-12-02 12:07:19,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:19,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:07:19,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713021123] [2020-12-02 12:07:19,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:07:19,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:19,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:07:19,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:07:19,597 INFO L87 Difference]: Start difference. First operand 57 states and 109 transitions. Second operand 3 states. [2020-12-02 12:07:19,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:19,608 INFO L93 Difference]: Finished difference Result 54 states and 101 transitions. [2020-12-02 12:07:19,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:07:19,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-02 12:07:19,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:19,611 INFO L225 Difference]: With dead ends: 54 [2020-12-02 12:07:19,613 INFO L226 Difference]: Without dead ends: 54 [2020-12-02 12:07:19,614 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 12:07:19,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-02 12:07:19,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-12-02 12:07:19,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-02 12:07:19,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 101 transitions. [2020-12-02 12:07:19,631 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 101 transitions. Word has length 7 [2020-12-02 12:07:19,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:19,632 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 101 transitions. [2020-12-02 12:07:19,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:07:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 101 transitions. [2020-12-02 12:07:19,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-02 12:07:19,634 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:19,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:19,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:07:19,634 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:19,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:19,645 INFO L82 PathProgramCache]: Analyzing trace with hash 454206947, now seen corresponding path program 1 times [2020-12-02 12:07:19,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:19,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244999782] [2020-12-02 12:07:19,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:19,720 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 12:07:19,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244999782] [2020-12-02 12:07:19,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:19,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:07:19,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572129656] [2020-12-02 12:07:19,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:07:19,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:19,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:07:19,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:07:19,723 INFO L87 Difference]: Start difference. First operand 54 states and 101 transitions. Second operand 5 states. [2020-12-02 12:07:19,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:19,754 INFO L93 Difference]: Finished difference Result 57 states and 102 transitions. [2020-12-02 12:07:19,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:07:19,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-02 12:07:19,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:19,756 INFO L225 Difference]: With dead ends: 57 [2020-12-02 12:07:19,756 INFO L226 Difference]: Without dead ends: 57 [2020-12-02 12:07:19,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:07:19,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-02 12:07:19,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-12-02 12:07:19,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-02 12:07:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 95 transitions. [2020-12-02 12:07:19,765 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 95 transitions. Word has length 7 [2020-12-02 12:07:19,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:19,765 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 95 transitions. [2020-12-02 12:07:19,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:07:19,766 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 95 transitions. [2020-12-02 12:07:19,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:07:19,767 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:19,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:19,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:07:19,767 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:19,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:19,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1208600435, now seen corresponding path program 1 times [2020-12-02 12:07:19,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:19,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142702332] [2020-12-02 12:07:19,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:19,871 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 12:07:19,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142702332] [2020-12-02 12:07:19,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:19,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:07:19,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261232615] [2020-12-02 12:07:19,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:07:19,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:19,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:07:19,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:07:19,876 INFO L87 Difference]: Start difference. First operand 51 states and 95 transitions. Second operand 4 states. [2020-12-02 12:07:19,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:19,912 INFO L93 Difference]: Finished difference Result 63 states and 109 transitions. [2020-12-02 12:07:19,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:07:19,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-02 12:07:19,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:19,913 INFO L225 Difference]: With dead ends: 63 [2020-12-02 12:07:19,913 INFO L226 Difference]: Without dead ends: 57 [2020-12-02 12:07:19,914 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 12:07:19,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-02 12:07:19,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-12-02 12:07:19,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-02 12:07:19,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 93 transitions. [2020-12-02 12:07:19,927 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 93 transitions. Word has length 8 [2020-12-02 12:07:19,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:19,928 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 93 transitions. [2020-12-02 12:07:19,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:07:19,928 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 93 transitions. [2020-12-02 12:07:19,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:07:19,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:19,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:19,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:07:19,929 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:19,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:19,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1195512545, now seen corresponding path program 2 times [2020-12-02 12:07:19,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:19,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474540086] [2020-12-02 12:07:19,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:20,010 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 12:07:20,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474540086] [2020-12-02 12:07:20,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:20,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:07:20,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947175530] [2020-12-02 12:07:20,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:07:20,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:20,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:07:20,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:07:20,014 INFO L87 Difference]: Start difference. First operand 51 states and 93 transitions. Second operand 4 states. [2020-12-02 12:07:20,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:20,031 INFO L93 Difference]: Finished difference Result 52 states and 85 transitions. [2020-12-02 12:07:20,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:07:20,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-02 12:07:20,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:20,032 INFO L225 Difference]: With dead ends: 52 [2020-12-02 12:07:20,032 INFO L226 Difference]: Without dead ends: 28 [2020-12-02 12:07:20,033 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 12:07:20,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-02 12:07:20,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-02 12:07:20,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-02 12:07:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 43 transitions. [2020-12-02 12:07:20,048 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 43 transitions. Word has length 8 [2020-12-02 12:07:20,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:20,048 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 43 transitions. [2020-12-02 12:07:20,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:07:20,050 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 43 transitions. [2020-12-02 12:07:20,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:07:20,051 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:20,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:20,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:07:20,053 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:20,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:20,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1199016759, now seen corresponding path program 1 times [2020-12-02 12:07:20,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:20,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119837188] [2020-12-02 12:07:20,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:20,109 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 12:07:20,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119837188] [2020-12-02 12:07:20,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:20,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:07:20,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114279426] [2020-12-02 12:07:20,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:07:20,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:20,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:07:20,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:07:20,114 INFO L87 Difference]: Start difference. First operand 28 states and 43 transitions. Second operand 4 states. [2020-12-02 12:07:20,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:20,130 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2020-12-02 12:07:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:07:20,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:07:20,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:20,132 INFO L225 Difference]: With dead ends: 27 [2020-12-02 12:07:20,132 INFO L226 Difference]: Without dead ends: 21 [2020-12-02 12:07:20,133 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 12:07:20,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-02 12:07:20,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-02 12:07:20,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-02 12:07:20,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2020-12-02 12:07:20,140 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 9 [2020-12-02 12:07:20,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:20,140 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 28 transitions. [2020-12-02 12:07:20,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:07:20,141 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2020-12-02 12:07:20,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:07:20,142 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:20,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:20,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:07:20,142 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:20,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:20,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1520437605, now seen corresponding path program 1 times [2020-12-02 12:07:20,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:20,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393586335] [2020-12-02 12:07:20,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:20,244 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 12:07:20,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393586335] [2020-12-02 12:07:20,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:20,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:07:20,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295117721] [2020-12-02 12:07:20,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:07:20,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:20,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:07:20,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:07:20,253 INFO L87 Difference]: Start difference. First operand 21 states and 28 transitions. Second operand 5 states. [2020-12-02 12:07:20,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:20,268 INFO L93 Difference]: Finished difference Result 18 states and 25 transitions. [2020-12-02 12:07:20,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:07:20,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:07:20,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:20,269 INFO L225 Difference]: With dead ends: 18 [2020-12-02 12:07:20,269 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:07:20,269 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 12:07:20,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:07:20,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:07:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:07:20,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:07:20,270 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-12-02 12:07:20,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:20,270 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:07:20,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:07:20,271 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:07:20,271 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:07:20,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:07:20,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:07:20 BasicIcfg [2020-12-02 12:07:20,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:07:20,275 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:07:20,275 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:07:20,275 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:07:20,276 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:07:15" (3/4) ... [2020-12-02 12:07:20,281 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:07:20,291 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:07:20,291 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:07:20,299 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-02 12:07:20,300 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:07:20,300 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:07:20,300 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:07:20,357 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:07:20,358 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:07:20,359 INFO L168 Benchmark]: Toolchain (without parser) took 6374.90 ms. Allocated memory was 48.2 MB in the beginning and 104.9 MB in the end (delta: 56.6 MB). Free memory was 24.7 MB in the beginning and 59.7 MB in the end (delta: -35.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:07:20,360 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 37.7 MB. Free memory is still 20.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:07:20,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 792.09 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.4 MB in the beginning and 38.0 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:07:20,361 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.04 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 12:07:20,362 INFO L168 Benchmark]: Boogie Preprocessor took 61.02 ms. Allocated memory is still 58.7 MB. Free memory was 36.1 MB in the beginning and 35.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:07:20,363 INFO L168 Benchmark]: RCFGBuilder took 557.58 ms. Allocated memory is still 58.7 MB. Free memory was 34.7 MB in the beginning and 28.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-12-02 12:07:20,363 INFO L168 Benchmark]: TraceAbstraction took 4792.68 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 28.5 MB in the beginning and 62.8 MB in the end (delta: -34.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2020-12-02 12:07:20,364 INFO L168 Benchmark]: Witness Printer took 82.93 ms. Allocated memory is still 104.9 MB. Free memory was 62.8 MB in the beginning and 59.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:07:20,368 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 37.7 MB. Free memory is still 20.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 792.09 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.4 MB in the beginning and 38.0 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.04 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 61.02 ms. Allocated memory is still 58.7 MB. Free memory was 36.1 MB in the beginning and 35.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 557.58 ms. Allocated memory is still 58.7 MB. Free memory was 34.7 MB in the beginning and 28.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4792.68 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 28.5 MB in the beginning and 62.8 MB in the end (delta: -34.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. * Witness Printer took 82.93 ms. Allocated memory is still 104.9 MB. Free memory was 62.8 MB in the beginning and 59.7 MB in the end (delta: 3.1 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 473 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 47 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 65 PlacesBefore, 22 PlacesAfterwards, 60 TransitionsBefore, 16 TransitionsAfterwards, 696 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1378 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 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 85 SDtfs, 58 SDslu, 83 SDs, 0 SdLazy, 47 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1488 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...