./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe001_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/safe001_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 75b6321658285c0e5c05d59d7bf40c5ba47b7cd7 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 03:02:36,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:02:36,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:02:36,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:02:36,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:02:36,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:02:36,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:02:36,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:02:36,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:02:36,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:02:36,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:02:36,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:02:36,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:02:36,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:02:36,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:02:36,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:02:36,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:02:36,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:02:36,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:02:36,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:02:36,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:02:36,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:02:36,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:02:36,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:02:36,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:02:36,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:02:36,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:02:36,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:02:36,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:02:36,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:02:36,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:02:36,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:02:36,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:02:36,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:02:36,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:02:36,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:02:36,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:02:36,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:02:36,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:02:36,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:02:36,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:02:36,441 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:02:36,484 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:02:36,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:02:36,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:02:36,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:02:36,488 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:02:36,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:02:36,488 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:02:36,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:02:36,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:02:36,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:02:36,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:02:36,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:02:36,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:02:36,491 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:02:36,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:02:36,491 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:02:36,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:02:36,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:02:36,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:02:36,492 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:02:36,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:02:36,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:02:36,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:02:36,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:02:36,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:02:36,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:02:36,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:02:36,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:02:36,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:02:36,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 75b6321658285c0e5c05d59d7bf40c5ba47b7cd7 [2020-10-20 03:02:36,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:02:36,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:02:36,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:02:36,740 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:02:36,741 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:02:36,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe001_tso.oepc.i [2020-10-20 03:02:36,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f399de44e/df40d82dc78245b6813aba57c1a064a8/FLAGf22c11553 [2020-10-20 03:02:37,380 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:02:37,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe001_tso.oepc.i [2020-10-20 03:02:37,399 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f399de44e/df40d82dc78245b6813aba57c1a064a8/FLAGf22c11553 [2020-10-20 03:02:37,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f399de44e/df40d82dc78245b6813aba57c1a064a8 [2020-10-20 03:02:37,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:02:37,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:02:37,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:02:37,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:02:37,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:02:37,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:02:37" (1/1) ... [2020-10-20 03:02:37,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d1f7789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:37, skipping insertion in model container [2020-10-20 03:02:37,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:02:37" (1/1) ... [2020-10-20 03:02:37,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:02:37,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:02:38,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:02:38,226 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:02:38,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:02:38,364 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:02:38,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:38 WrapperNode [2020-10-20 03:02:38,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:02:38,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:02:38,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:02:38,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:02:38,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:38" (1/1) ... [2020-10-20 03:02:38,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:38" (1/1) ... [2020-10-20 03:02:38,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:02:38,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:02:38,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:02:38,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:02:38,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:38" (1/1) ... [2020-10-20 03:02:38,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:38" (1/1) ... [2020-10-20 03:02:38,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:38" (1/1) ... [2020-10-20 03:02:38,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:38" (1/1) ... [2020-10-20 03:02:38,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:38" (1/1) ... [2020-10-20 03:02:38,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:38" (1/1) ... [2020-10-20 03:02:38,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:38" (1/1) ... [2020-10-20 03:02:38,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:02:38,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:02:38,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:02:38,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:02:38,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:38" (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 [2020-10-20 03:02:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:02:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:02:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:02:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:02:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:02:38,562 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:02:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:02:38,562 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:02:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:02:38,563 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:02:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:02:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:02:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:02:38,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:02:38,566 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 03:02:38,982 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:02:38,982 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:02:38,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:02:38 BoogieIcfgContainer [2020-10-20 03:02:38,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:02:38,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:02:38,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:02:38,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:02:38,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:02:37" (1/3) ... [2020-10-20 03:02:38,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ee1e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:02:38, skipping insertion in model container [2020-10-20 03:02:38,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:38" (2/3) ... [2020-10-20 03:02:38,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ee1e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:02:38, skipping insertion in model container [2020-10-20 03:02:38,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:02:38" (3/3) ... [2020-10-20 03:02:38,995 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.oepc.i [2020-10-20 03:02:39,007 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:02:39,007 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:02:39,015 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:02:39,016 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:02:39,044 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,045 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,045 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,045 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,046 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,055 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,055 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,056 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,056 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,056 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,056 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,057 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,057 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,058 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,058 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,058 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,059 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,059 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,066 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,067 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,067 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,067 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,076 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,077 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,077 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,078 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,080 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,080 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,080 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,080 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:39,082 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:02:39,096 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:02:39,115 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:02:39,115 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:02:39,115 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:02:39,116 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:02:39,116 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:02:39,116 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:02:39,116 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:02:39,116 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:02:39,130 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:02:39,133 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-20 03:02:39,136 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-20 03:02:39,138 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-20 03:02:39,191 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-20 03:02:39,191 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:02:39,196 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-20 03:02:39,199 INFO L117 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-20 03:02:40,653 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-20 03:02:41,156 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-20 03:02:41,262 INFO L132 LiptonReduction]: Checked pairs total: 3163 [2020-10-20 03:02:41,262 INFO L134 LiptonReduction]: Total number of compositions: 72 [2020-10-20 03:02:41,270 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-20 03:02:41,319 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-20 03:02:41,321 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-20 03:02:41,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:02:41,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:41,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:41,331 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:41,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:41,337 INFO L82 PathProgramCache]: Analyzing trace with hash 2115134997, now seen corresponding path program 1 times [2020-10-20 03:02:41,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:41,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341718113] [2020-10-20 03:02:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:41,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:02:41,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341718113] [2020-10-20 03:02:41,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:41,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:02:41,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647026] [2020-10-20 03:02:41,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 03:02:41,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:41,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 03:02:41,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:02:41,576 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-20 03:02:41,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:41,610 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-20 03:02:41,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 03:02:41,611 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 03:02:41,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:41,629 INFO L225 Difference]: With dead ends: 362 [2020-10-20 03:02:41,630 INFO L226 Difference]: Without dead ends: 298 [2020-10-20 03:02:41,631 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 [2020-10-20 03:02:41,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-20 03:02:41,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-20 03:02:41,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-20 03:02:41,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-20 03:02:41,710 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-20 03:02:41,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:41,711 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-20 03:02:41,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 03:02:41,712 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-20 03:02:41,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:02:41,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:41,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:41,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:02:41,714 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:41,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:41,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1144664430, now seen corresponding path program 1 times [2020-10-20 03:02:41,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:41,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905322670] [2020-10-20 03:02:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:41,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:02:41,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905322670] [2020-10-20 03:02:41,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:41,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:02:41,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316429254] [2020-10-20 03:02:41,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:02:41,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:41,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:02:41,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:02:41,800 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-10-20 03:02:41,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:41,823 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-10-20 03:02:41,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:02:41,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 03:02:41,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:41,826 INFO L225 Difference]: With dead ends: 217 [2020-10-20 03:02:41,826 INFO L226 Difference]: Without dead ends: 217 [2020-10-20 03:02:41,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:02:41,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-20 03:02:41,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-10-20 03:02:41,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-20 03:02:41,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-10-20 03:02:41,844 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-10-20 03:02:41,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:41,844 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-10-20 03:02:41,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:02:41,845 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-10-20 03:02:41,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:02:41,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:41,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:41,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:02:41,847 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:41,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:41,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1523104206, now seen corresponding path program 1 times [2020-10-20 03:02:41,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:41,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955044865] [2020-10-20 03:02:41,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:02:41,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955044865] [2020-10-20 03:02:41,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:41,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:02:41,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135488122] [2020-10-20 03:02:41,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:02:41,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:41,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:02:41,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:02:41,939 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-10-20 03:02:41,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:41,970 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-10-20 03:02:41,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:02:41,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 03:02:41,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:41,972 INFO L225 Difference]: With dead ends: 136 [2020-10-20 03:02:41,972 INFO L226 Difference]: Without dead ends: 136 [2020-10-20 03:02:41,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:02:41,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-20 03:02:41,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-10-20 03:02:41,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-20 03:02:41,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-10-20 03:02:41,992 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-10-20 03:02:41,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:41,993 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-10-20 03:02:41,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:02:41,993 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-10-20 03:02:41,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:02:41,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:41,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:41,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:02:41,997 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:41,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:41,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1616090199, now seen corresponding path program 1 times [2020-10-20 03:02:41,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:41,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972788370] [2020-10-20 03:02:41,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:42,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:02:42,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972788370] [2020-10-20 03:02:42,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:42,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:02:42,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626810553] [2020-10-20 03:02:42,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:02:42,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:42,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:02:42,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:02:42,088 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-10-20 03:02:42,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:42,115 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-10-20 03:02:42,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:02:42,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-20 03:02:42,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:42,117 INFO L225 Difference]: With dead ends: 109 [2020-10-20 03:02:42,117 INFO L226 Difference]: Without dead ends: 109 [2020-10-20 03:02:42,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:02:42,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-20 03:02:42,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-20 03:02:42,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-20 03:02:42,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-10-20 03:02:42,123 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-10-20 03:02:42,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:42,123 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-10-20 03:02:42,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:02:42,123 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-10-20 03:02:42,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:02:42,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:42,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:42,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:02:42,125 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:42,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:42,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1930604432, now seen corresponding path program 1 times [2020-10-20 03:02:42,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:42,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059410625] [2020-10-20 03:02:42,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:02:42,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059410625] [2020-10-20 03:02:42,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:42,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:02:42,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913088637] [2020-10-20 03:02:42,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:02:42,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:42,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:02:42,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:02:42,225 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-10-20 03:02:42,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:42,276 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-10-20 03:02:42,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:02:42,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 03:02:42,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:42,279 INFO L225 Difference]: With dead ends: 135 [2020-10-20 03:02:42,279 INFO L226 Difference]: Without dead ends: 85 [2020-10-20 03:02:42,279 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 [2020-10-20 03:02:42,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-20 03:02:42,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-20 03:02:42,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-20 03:02:42,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 177 transitions. [2020-10-20 03:02:42,293 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 177 transitions. Word has length 18 [2020-10-20 03:02:42,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:42,294 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 177 transitions. [2020-10-20 03:02:42,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:02:42,294 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 177 transitions. [2020-10-20 03:02:42,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:02:42,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:42,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:42,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:02:42,309 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:42,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:42,311 INFO L82 PathProgramCache]: Analyzing trace with hash 129745538, now seen corresponding path program 2 times [2020-10-20 03:02:42,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:42,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580598552] [2020-10-20 03:02:42,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:42,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:02:42,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580598552] [2020-10-20 03:02:42,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:42,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:02:42,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223598051] [2020-10-20 03:02:42,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:02:42,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:42,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:02:42,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:02:42,397 INFO L87 Difference]: Start difference. First operand 85 states and 177 transitions. Second operand 5 states. [2020-10-20 03:02:42,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:42,436 INFO L93 Difference]: Finished difference Result 123 states and 251 transitions. [2020-10-20 03:02:42,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:02:42,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 03:02:42,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:42,438 INFO L225 Difference]: With dead ends: 123 [2020-10-20 03:02:42,438 INFO L226 Difference]: Without dead ends: 61 [2020-10-20 03:02:42,439 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 [2020-10-20 03:02:42,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-20 03:02:42,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-20 03:02:42,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-20 03:02:42,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 117 transitions. [2020-10-20 03:02:42,442 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 117 transitions. Word has length 18 [2020-10-20 03:02:42,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:42,442 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 117 transitions. [2020-10-20 03:02:42,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:02:42,442 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 117 transitions. [2020-10-20 03:02:42,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:02:42,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:42,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:42,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:02:42,444 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:42,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:42,444 INFO L82 PathProgramCache]: Analyzing trace with hash -898209114, now seen corresponding path program 3 times [2020-10-20 03:02:42,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:42,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270883580] [2020-10-20 03:02:42,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:02:42,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270883580] [2020-10-20 03:02:42,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:42,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:02:42,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042978042] [2020-10-20 03:02:42,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:02:42,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:42,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:02:42,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:02:42,492 INFO L87 Difference]: Start difference. First operand 61 states and 117 transitions. Second operand 4 states. [2020-10-20 03:02:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:42,508 INFO L93 Difference]: Finished difference Result 60 states and 116 transitions. [2020-10-20 03:02:42,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:02:42,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-20 03:02:42,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:42,509 INFO L225 Difference]: With dead ends: 60 [2020-10-20 03:02:42,509 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:02:42,509 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 [2020-10-20 03:02:42,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:02:42,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:02:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:02:42,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:02:42,510 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-20 03:02:42,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:42,510 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:02:42,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:02:42,511 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:02:42,511 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:02:42,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:02:42,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:02:42 BasicIcfg [2020-10-20 03:02:42,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:02:42,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:02:42,516 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:02:42,516 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:02:42,517 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:02:38" (3/4) ... [2020-10-20 03:02:42,521 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:02:42,528 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:02:42,528 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:02:42,529 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:02:42,534 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:02:42,534 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:02:42,535 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:02:42,535 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:02:42,588 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:02:42,588 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:02:42,590 INFO L168 Benchmark]: Toolchain (without parser) took 4886.52 ms. Allocated memory was 40.4 MB in the beginning and 67.1 MB in the end (delta: 26.7 MB). Free memory was 16.7 MB in the beginning and 15.9 MB in the end (delta: 736.5 kB). Peak memory consumption was 27.5 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:42,591 INFO L168 Benchmark]: CDTParser took 0.87 ms. Allocated memory is still 30.9 MB. Free memory was 6.8 MB in the beginning and 6.8 MB in the end (delta: 42.0 kB). Peak memory consumption was 42.0 kB. Max. memory is 14.3 GB. [2020-10-20 03:02:42,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.37 ms. Allocated memory was 40.4 MB in the beginning and 43.0 MB in the end (delta: 2.6 MB). Free memory was 15.8 MB in the beginning and 25.7 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:42,593 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.25 ms. Allocated memory is still 43.0 MB. Free memory was 25.7 MB in the beginning and 23.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:42,593 INFO L168 Benchmark]: Boogie Preprocessor took 31.45 ms. Allocated memory is still 43.0 MB. Free memory was 23.6 MB in the beginning and 21.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:42,594 INFO L168 Benchmark]: RCFGBuilder took 532.94 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 21.9 MB in the beginning and 15.4 MB in the end (delta: 6.5 MB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:42,595 INFO L168 Benchmark]: TraceAbstraction took 3528.57 ms. Allocated memory was 45.6 MB in the beginning and 67.1 MB in the end (delta: 21.5 MB). Free memory was 14.8 MB in the beginning and 19.7 MB in the end (delta: -4.9 MB). Peak memory consumption was 16.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:42,596 INFO L168 Benchmark]: Witness Printer took 72.75 ms. Allocated memory is still 67.1 MB. Free memory was 19.7 MB in the beginning and 15.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:42,600 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87 ms. Allocated memory is still 30.9 MB. Free memory was 6.8 MB in the beginning and 6.8 MB in the end (delta: 42.0 kB). Peak memory consumption was 42.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 656.37 ms. Allocated memory was 40.4 MB in the beginning and 43.0 MB in the end (delta: 2.6 MB). Free memory was 15.8 MB in the beginning and 25.7 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 54.25 ms. Allocated memory is still 43.0 MB. Free memory was 25.7 MB in the beginning and 23.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 31.45 ms. Allocated memory is still 43.0 MB. Free memory was 23.6 MB in the beginning and 21.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 532.94 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 21.9 MB in the beginning and 15.4 MB in the end (delta: 6.5 MB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3528.57 ms. Allocated memory was 45.6 MB in the beginning and 67.1 MB in the end (delta: 21.5 MB). Free memory was 14.8 MB in the beginning and 19.7 MB in the end (delta: -4.9 MB). Peak memory consumption was 16.6 MB. Max. memory is 14.3 GB. * Witness Printer took 72.75 ms. Allocated memory is still 67.1 MB. Free memory was 19.7 MB in the beginning and 15.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 952 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 85 PlacesBefore, 32 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3163 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 117 SDtfs, 86 SDslu, 155 SDs, 0 SdLazy, 62 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3559 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...