./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe014_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe014_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 76a5caa3071fd3b7fdb0794a63eaafb12ee9a50e ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:30:02,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:30:02,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:30:02,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:30:02,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:30:02,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:30:02,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:30:02,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:30:02,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:30:02,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:30:02,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:30:02,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:30:02,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:30:02,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:30:02,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:30:02,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:30:02,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:30:02,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:30:02,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:30:02,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:30:02,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:30:02,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:30:02,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:30:02,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:30:02,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:30:02,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:30:02,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:30:02,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:30:02,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:30:02,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:30:02,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:30:02,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:30:02,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:30:02,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:30:02,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:30:02,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:30:02,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:30:02,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:30:02,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:30:02,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:30:02,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:30:02,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:30:02,543 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:30:02,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:30:02,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:30:02,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:30:02,548 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:30:02,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:30:02,548 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:30:02,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:30:02,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:30:02,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:30:02,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:30:02,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:30:02,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:30:02,551 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:30:02,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:30:02,551 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:30:02,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:30:02,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:30:02,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:30:02,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:30:02,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:30:02,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:30:02,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:30:02,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:30:02,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:30:02,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:30:02,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:30:02,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:30:02,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:30:02,555 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76a5caa3071fd3b7fdb0794a63eaafb12ee9a50e [2020-10-26 00:30:02,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:30:03,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:30:03,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:30:03,004 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:30:03,005 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:30:03,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe014_tso.oepc.i [2020-10-26 00:30:03,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6964eeecd/72da65704bb54feb9cb1d6eb41517128/FLAG57d5983fe [2020-10-26 00:30:03,846 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:30:03,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_tso.oepc.i [2020-10-26 00:30:03,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6964eeecd/72da65704bb54feb9cb1d6eb41517128/FLAG57d5983fe [2020-10-26 00:30:04,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6964eeecd/72da65704bb54feb9cb1d6eb41517128 [2020-10-26 00:30:04,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:30:04,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:30:04,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:30:04,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:30:04,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:30:04,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:30:04" (1/1) ... [2020-10-26 00:30:04,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284f3623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:04, skipping insertion in model container [2020-10-26 00:30:04,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:30:04" (1/1) ... [2020-10-26 00:30:04,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:30:04,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:30:04,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:30:04,609 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:30:04,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:30:04,745 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:30:04,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:04 WrapperNode [2020-10-26 00:30:04,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:30:04,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:30:04,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:30:04,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:30:04,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:04" (1/1) ... [2020-10-26 00:30:04,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:04" (1/1) ... [2020-10-26 00:30:04,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:30:04,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:30:04,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:30:04,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:30:04,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:04" (1/1) ... [2020-10-26 00:30:04,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:04" (1/1) ... [2020-10-26 00:30:04,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:04" (1/1) ... [2020-10-26 00:30:04,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:04" (1/1) ... [2020-10-26 00:30:04,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:04" (1/1) ... [2020-10-26 00:30:04,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:04" (1/1) ... [2020-10-26 00:30:04,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:04" (1/1) ... [2020-10-26 00:30:04,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:30:04,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:30:04,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:30:04,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:30:04,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:30:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:30:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:30:04,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:30:04,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:30:04,905 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:30:04,905 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:30:04,906 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:30:04,906 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:30:04,906 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-26 00:30:04,906 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-26 00:30:04,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:30:04,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:30:04,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:30:04,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:30:04,909 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:30:05,457 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:30:05,457 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:30:05,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:30:05 BoogieIcfgContainer [2020-10-26 00:30:05,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:30:05,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:30:05,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:30:05,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:30:05,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:30:04" (1/3) ... [2020-10-26 00:30:05,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733b7c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:30:05, skipping insertion in model container [2020-10-26 00:30:05,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:04" (2/3) ... [2020-10-26 00:30:05,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733b7c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:30:05, skipping insertion in model container [2020-10-26 00:30:05,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:30:05" (3/3) ... [2020-10-26 00:30:05,473 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.oepc.i [2020-10-26 00:30:05,489 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:30:05,489 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:30:05,495 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:30:05,496 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:30:05,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,535 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,535 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,535 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,535 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,536 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,539 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,539 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,539 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,540 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,541 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,541 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,545 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,545 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,545 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,546 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,554 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,554 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,554 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,554 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,559 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,559 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,559 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,559 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:05,565 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:30:05,579 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 00:30:05,619 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:30:05,620 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:30:05,620 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:30:05,621 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:30:05,621 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:30:05,621 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:30:05,621 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:30:05,621 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:30:05,639 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:30:05,642 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-26 00:30:05,646 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-26 00:30:05,648 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-26 00:30:05,724 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-26 00:30:05,725 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:30:05,736 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-26 00:30:05,742 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-26 00:30:07,538 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-26 00:30:07,643 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-10-26 00:30:07,644 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-10-26 00:30:07,650 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-26 00:30:07,679 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-26 00:30:07,681 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-26 00:30:07,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:30:07,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:07,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:07,689 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:07,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:07,695 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-10-26 00:30:07,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:07,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595943866] [2020-10-26 00:30:07,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:07,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:07,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595943866] [2020-10-26 00:30:07,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:07,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:30:07,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9251388] [2020-10-26 00:30:07,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-26 00:30:07,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:07,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 00:30:07,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:30:07,904 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-26 00:30:07,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:07,953 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-26 00:30:07,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 00:30:07,955 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-26 00:30:07,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:07,971 INFO L225 Difference]: With dead ends: 362 [2020-10-26 00:30:07,971 INFO L226 Difference]: Without dead ends: 298 [2020-10-26 00:30:07,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:30:07,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-26 00:30:08,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-26 00:30:08,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-26 00:30:08,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-26 00:30:08,051 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-26 00:30:08,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:08,052 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-26 00:30:08,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-26 00:30:08,053 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-26 00:30:08,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 00:30:08,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:08,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:08,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:30:08,062 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:08,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:08,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-10-26 00:30:08,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:08,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690622525] [2020-10-26 00:30:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:08,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690622525] [2020-10-26 00:30:08,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:08,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:30:08,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34390397] [2020-10-26 00:30:08,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:30:08,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:08,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:30:08,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:30:08,219 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-10-26 00:30:08,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:08,281 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-10-26 00:30:08,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:30:08,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-26 00:30:08,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:08,285 INFO L225 Difference]: With dead ends: 330 [2020-10-26 00:30:08,285 INFO L226 Difference]: Without dead ends: 266 [2020-10-26 00:30:08,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:30:08,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-26 00:30:08,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-26 00:30:08,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-26 00:30:08,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-10-26 00:30:08,306 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-10-26 00:30:08,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:08,306 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-10-26 00:30:08,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:30:08,306 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-10-26 00:30:08,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 00:30:08,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:08,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:08,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:30:08,308 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:08,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:08,309 INFO L82 PathProgramCache]: Analyzing trace with hash 585999155, now seen corresponding path program 1 times [2020-10-26 00:30:08,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:08,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787089661] [2020-10-26 00:30:08,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:08,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787089661] [2020-10-26 00:30:08,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:08,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:30:08,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803243291] [2020-10-26 00:30:08,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:30:08,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:08,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:30:08,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:30:08,416 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-10-26 00:30:08,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:08,519 INFO L93 Difference]: Finished difference Result 344 states and 924 transitions. [2020-10-26 00:30:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 00:30:08,519 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-26 00:30:08,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:08,521 INFO L225 Difference]: With dead ends: 344 [2020-10-26 00:30:08,521 INFO L226 Difference]: Without dead ends: 170 [2020-10-26 00:30:08,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-26 00:30:08,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-26 00:30:08,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-10-26 00:30:08,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-26 00:30:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 428 transitions. [2020-10-26 00:30:08,531 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 428 transitions. Word has length 10 [2020-10-26 00:30:08,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:08,531 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 428 transitions. [2020-10-26 00:30:08,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:30:08,531 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 428 transitions. [2020-10-26 00:30:08,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:30:08,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:08,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:08,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:30:08,533 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:08,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:08,534 INFO L82 PathProgramCache]: Analyzing trace with hash 229025079, now seen corresponding path program 1 times [2020-10-26 00:30:08,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:08,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703339619] [2020-10-26 00:30:08,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:08,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:08,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703339619] [2020-10-26 00:30:08,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:08,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:30:08,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780632656] [2020-10-26 00:30:08,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:30:08,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:08,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:30:08,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:30:08,602 INFO L87 Difference]: Start difference. First operand 170 states and 428 transitions. Second operand 4 states. [2020-10-26 00:30:08,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:08,628 INFO L93 Difference]: Finished difference Result 182 states and 442 transitions. [2020-10-26 00:30:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:30:08,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-26 00:30:08,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:08,630 INFO L225 Difference]: With dead ends: 182 [2020-10-26 00:30:08,630 INFO L226 Difference]: Without dead ends: 158 [2020-10-26 00:30:08,630 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 [2020-10-26 00:30:08,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-26 00:30:08,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-26 00:30:08,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-26 00:30:08,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 390 transitions. [2020-10-26 00:30:08,637 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 390 transitions. Word has length 12 [2020-10-26 00:30:08,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:08,637 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 390 transitions. [2020-10-26 00:30:08,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:30:08,638 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 390 transitions. [2020-10-26 00:30:08,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 00:30:08,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:08,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:08,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:30:08,640 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:08,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:08,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1697755731, now seen corresponding path program 1 times [2020-10-26 00:30:08,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:08,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052298301] [2020-10-26 00:30:08,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:08,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052298301] [2020-10-26 00:30:08,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:08,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 00:30:08,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039485039] [2020-10-26 00:30:08,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 00:30:08,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:08,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 00:30:08,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:30:08,762 INFO L87 Difference]: Start difference. First operand 158 states and 390 transitions. Second operand 7 states. [2020-10-26 00:30:08,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:08,879 INFO L93 Difference]: Finished difference Result 172 states and 412 transitions. [2020-10-26 00:30:08,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 00:30:08,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-26 00:30:08,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:08,881 INFO L225 Difference]: With dead ends: 172 [2020-10-26 00:30:08,881 INFO L226 Difference]: Without dead ends: 130 [2020-10-26 00:30:08,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-26 00:30:08,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-26 00:30:08,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-10-26 00:30:08,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-26 00:30:08,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2020-10-26 00:30:08,887 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 13 [2020-10-26 00:30:08,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:08,887 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2020-10-26 00:30:08,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 00:30:08,887 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2020-10-26 00:30:08,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 00:30:08,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:08,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:08,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:30:08,889 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:08,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:08,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1286592520, now seen corresponding path program 1 times [2020-10-26 00:30:08,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:08,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606254040] [2020-10-26 00:30:08,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:08,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:08,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606254040] [2020-10-26 00:30:08,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:08,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:30:08,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208223706] [2020-10-26 00:30:08,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:30:08,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:08,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:30:08,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:30:08,975 INFO L87 Difference]: Start difference. First operand 128 states and 316 transitions. Second operand 4 states. [2020-10-26 00:30:09,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:09,003 INFO L93 Difference]: Finished difference Result 134 states and 317 transitions. [2020-10-26 00:30:09,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:30:09,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-26 00:30:09,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:09,005 INFO L225 Difference]: With dead ends: 134 [2020-10-26 00:30:09,005 INFO L226 Difference]: Without dead ends: 116 [2020-10-26 00:30:09,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:30:09,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-26 00:30:09,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-26 00:30:09,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-26 00:30:09,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 278 transitions. [2020-10-26 00:30:09,010 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 278 transitions. Word has length 13 [2020-10-26 00:30:09,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:09,010 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 278 transitions. [2020-10-26 00:30:09,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:30:09,010 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 278 transitions. [2020-10-26 00:30:09,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 00:30:09,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:09,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:09,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 00:30:09,016 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:09,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:09,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1405608924, now seen corresponding path program 1 times [2020-10-26 00:30:09,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:09,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865100190] [2020-10-26 00:30:09,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:09,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:09,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865100190] [2020-10-26 00:30:09,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:09,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:30:09,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395810546] [2020-10-26 00:30:09,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:30:09,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:09,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:30:09,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:30:09,110 INFO L87 Difference]: Start difference. First operand 116 states and 278 transitions. Second operand 4 states. [2020-10-26 00:30:09,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:09,134 INFO L93 Difference]: Finished difference Result 137 states and 301 transitions. [2020-10-26 00:30:09,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:30:09,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-26 00:30:09,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:09,136 INFO L225 Difference]: With dead ends: 137 [2020-10-26 00:30:09,136 INFO L226 Difference]: Without dead ends: 97 [2020-10-26 00:30:09,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:30:09,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-26 00:30:09,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-26 00:30:09,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-26 00:30:09,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 208 transitions. [2020-10-26 00:30:09,141 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 208 transitions. Word has length 14 [2020-10-26 00:30:09,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:09,142 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 208 transitions. [2020-10-26 00:30:09,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:30:09,142 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 208 transitions. [2020-10-26 00:30:09,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 00:30:09,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:09,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:09,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 00:30:09,144 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:09,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:09,144 INFO L82 PathProgramCache]: Analyzing trace with hash -27259733, now seen corresponding path program 1 times [2020-10-26 00:30:09,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:09,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208539023] [2020-10-26 00:30:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:09,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:09,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208539023] [2020-10-26 00:30:09,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:09,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:30:09,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756765782] [2020-10-26 00:30:09,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:30:09,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:09,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:30:09,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:30:09,245 INFO L87 Difference]: Start difference. First operand 97 states and 208 transitions. Second operand 5 states. [2020-10-26 00:30:09,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:09,291 INFO L93 Difference]: Finished difference Result 95 states and 185 transitions. [2020-10-26 00:30:09,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:30:09,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-26 00:30:09,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:09,293 INFO L225 Difference]: With dead ends: 95 [2020-10-26 00:30:09,293 INFO L226 Difference]: Without dead ends: 70 [2020-10-26 00:30:09,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:30:09,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-26 00:30:09,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-10-26 00:30:09,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-26 00:30:09,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 129 transitions. [2020-10-26 00:30:09,298 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 129 transitions. Word has length 15 [2020-10-26 00:30:09,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:09,298 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 129 transitions. [2020-10-26 00:30:09,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:30:09,299 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 129 transitions. [2020-10-26 00:30:09,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 00:30:09,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:09,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:09,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 00:30:09,300 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:09,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:09,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1628487690, now seen corresponding path program 1 times [2020-10-26 00:30:09,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:09,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069488388] [2020-10-26 00:30:09,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:09,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:09,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069488388] [2020-10-26 00:30:09,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:09,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 00:30:09,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227244467] [2020-10-26 00:30:09,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:30:09,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:09,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:30:09,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:30:09,367 INFO L87 Difference]: Start difference. First operand 70 states and 129 transitions. Second operand 6 states. [2020-10-26 00:30:09,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:09,429 INFO L93 Difference]: Finished difference Result 63 states and 113 transitions. [2020-10-26 00:30:09,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:30:09,430 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-26 00:30:09,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:09,431 INFO L225 Difference]: With dead ends: 63 [2020-10-26 00:30:09,431 INFO L226 Difference]: Without dead ends: 55 [2020-10-26 00:30:09,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-26 00:30:09,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-26 00:30:09,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-26 00:30:09,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-26 00:30:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-10-26 00:30:09,434 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 16 [2020-10-26 00:30:09,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:09,434 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-10-26 00:30:09,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:30:09,434 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-10-26 00:30:09,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 00:30:09,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:09,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:09,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 00:30:09,435 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:09,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:09,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1397206146, now seen corresponding path program 1 times [2020-10-26 00:30:09,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:09,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424940433] [2020-10-26 00:30:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:09,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:09,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424940433] [2020-10-26 00:30:09,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:09,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:30:09,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276091676] [2020-10-26 00:30:09,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:30:09,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:09,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:30:09,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:30:09,493 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-10-26 00:30:09,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:09,523 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-10-26 00:30:09,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:30:09,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-26 00:30:09,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:09,524 INFO L225 Difference]: With dead ends: 65 [2020-10-26 00:30:09,524 INFO L226 Difference]: Without dead ends: 39 [2020-10-26 00:30:09,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:30:09,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-26 00:30:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-26 00:30:09,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-26 00:30:09,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 63 transitions. [2020-10-26 00:30:09,527 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 63 transitions. Word has length 18 [2020-10-26 00:30:09,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:09,527 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 63 transitions. [2020-10-26 00:30:09,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:30:09,527 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 63 transitions. [2020-10-26 00:30:09,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 00:30:09,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:09,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:09,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 00:30:09,528 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:09,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:09,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1171950116, now seen corresponding path program 2 times [2020-10-26 00:30:09,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:09,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021233734] [2020-10-26 00:30:09,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:09,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:09,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021233734] [2020-10-26 00:30:09,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:09,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:30:09,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620967312] [2020-10-26 00:30:09,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:30:09,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:09,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:30:09,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:30:09,575 INFO L87 Difference]: Start difference. First operand 39 states and 63 transitions. Second operand 5 states. [2020-10-26 00:30:09,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:09,604 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2020-10-26 00:30:09,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:30:09,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-26 00:30:09,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:09,605 INFO L225 Difference]: With dead ends: 53 [2020-10-26 00:30:09,605 INFO L226 Difference]: Without dead ends: 31 [2020-10-26 00:30:09,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:30:09,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-26 00:30:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-26 00:30:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-26 00:30:09,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-10-26 00:30:09,607 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 18 [2020-10-26 00:30:09,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:09,607 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-10-26 00:30:09,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:30:09,607 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-10-26 00:30:09,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 00:30:09,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:09,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:09,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 00:30:09,608 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:09,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:09,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1333208262, now seen corresponding path program 3 times [2020-10-26 00:30:09,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:09,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249155606] [2020-10-26 00:30:09,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:09,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249155606] [2020-10-26 00:30:09,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:09,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:30:09,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607929900] [2020-10-26 00:30:09,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:30:09,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:09,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:30:09,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:30:09,664 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand 5 states. [2020-10-26 00:30:09,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:09,691 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2020-10-26 00:30:09,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:30:09,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-26 00:30:09,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:09,692 INFO L225 Difference]: With dead ends: 30 [2020-10-26 00:30:09,692 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:30:09,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:30:09,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:30:09,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:30:09,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:30:09,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:30:09,693 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-26 00:30:09,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:09,693 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:30:09,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:30:09,694 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:30:09,694 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:30:09,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 00:30:09,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:30:09 BasicIcfg [2020-10-26 00:30:09,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:30:09,698 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:30:09,698 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:30:09,699 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:30:09,699 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:30:05" (3/4) ... [2020-10-26 00:30:09,703 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:30:09,710 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:30:09,710 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:30:09,710 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-26 00:30:09,715 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-26 00:30:09,715 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:30:09,716 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:30:09,716 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:30:09,761 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:30:09,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:30:09,768 INFO L168 Benchmark]: Toolchain (without parser) took 5682.98 ms. Allocated memory was 54.5 MB in the beginning and 121.6 MB in the end (delta: 67.1 MB). Free memory was 30.3 MB in the beginning and 41.2 MB in the end (delta: -11.0 MB). Peak memory consumption was 56.8 MB. Max. memory is 16.1 GB. [2020-10-26 00:30:09,768 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 44.0 MB. Free memory was 22.3 MB in the beginning and 22.3 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:30:09,769 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.10 ms. Allocated memory is still 54.5 MB. Free memory was 29.6 MB in the beginning and 24.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-10-26 00:30:09,769 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.98 ms. Allocated memory is still 54.5 MB. Free memory was 24.2 MB in the beginning and 36.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:30:09,770 INFO L168 Benchmark]: Boogie Preprocessor took 27.58 ms. Allocated memory is still 54.5 MB. Free memory was 36.8 MB in the beginning and 35.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:30:09,773 INFO L168 Benchmark]: RCFGBuilder took 633.45 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 35.5 MB in the beginning and 40.1 MB in the end (delta: -4.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2020-10-26 00:30:09,774 INFO L168 Benchmark]: TraceAbstraction took 4233.81 ms. Allocated memory was 67.1 MB in the beginning and 121.6 MB in the end (delta: 54.5 MB). Free memory was 39.8 MB in the beginning and 44.3 MB in the end (delta: -4.6 MB). Peak memory consumption was 50.0 MB. Max. memory is 16.1 GB. [2020-10-26 00:30:09,774 INFO L168 Benchmark]: Witness Printer took 65.87 ms. Allocated memory is still 121.6 MB. Free memory was 44.3 MB in the beginning and 41.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:30:09,779 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 44.0 MB. Free memory was 22.3 MB in the beginning and 22.3 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 653.10 ms. Allocated memory is still 54.5 MB. Free memory was 29.6 MB in the beginning and 24.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.98 ms. Allocated memory is still 54.5 MB. Free memory was 24.2 MB in the beginning and 36.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.58 ms. Allocated memory is still 54.5 MB. Free memory was 36.8 MB in the beginning and 35.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 633.45 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 35.5 MB in the beginning and 40.1 MB in the end (delta: -4.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4233.81 ms. Allocated memory was 67.1 MB in the beginning and 121.6 MB in the end (delta: 54.5 MB). Free memory was 39.8 MB in the beginning and 44.3 MB in the end (delta: -4.6 MB). Peak memory consumption was 50.0 MB. Max. memory is 16.1 GB. * Witness Printer took 65.87 ms. Allocated memory is still 121.6 MB. Free memory was 44.3 MB in the beginning and 41.2 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 962 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 66 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 228 SDtfs, 325 SDslu, 408 SDs, 0 SdLazy, 222 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 12 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 6560 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...