./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe026_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/safe026_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 692cfe8c8c302b29f29b9d33b1fef0f3efd9c990 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 03:07:00,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:07:00,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:07:00,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:07:00,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:07:00,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:07:00,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:07:00,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:07:00,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:07:00,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:07:00,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:07:00,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:07:00,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:07:00,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:07:00,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:07:00,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:07:00,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:07:00,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:07:00,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:07:00,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:07:00,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:07:00,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:07:00,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:07:00,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:07:00,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:07:00,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:07:00,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:07:00,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:07:00,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:07:00,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:07:00,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:07:00,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:07:00,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:07:00,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:07:00,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:07:00,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:07:00,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:07:00,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:07:00,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:07:00,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:07:00,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:07:00,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:07:00,516 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:07:00,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:07:00,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:07:00,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:07:00,519 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:07:00,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:07:00,519 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:07:00,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:07:00,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:07:00,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:07:00,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:07:00,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:07:00,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:07:00,522 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:07:00,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:07:00,523 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:07:00,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:07:00,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:07:00,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:07:00,524 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:07:00,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:07:00,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:07:00,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:07:00,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:07:00,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:07:00,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:07:00,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:07:00,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:07:00,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:07:00,526 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 -> 692cfe8c8c302b29f29b9d33b1fef0f3efd9c990 [2020-10-20 03:07:00,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:07:00,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:07:00,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:07:00,787 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:07:00,791 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:07:00,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i [2020-10-20 03:07:00,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/032a5444b/8be14be0ee33488f98c763b6a2258d45/FLAG291decc4e [2020-10-20 03:07:01,463 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:07:01,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i [2020-10-20 03:07:01,487 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/032a5444b/8be14be0ee33488f98c763b6a2258d45/FLAG291decc4e [2020-10-20 03:07:01,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/032a5444b/8be14be0ee33488f98c763b6a2258d45 [2020-10-20 03:07:01,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:07:01,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:07:01,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:07:01,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:07:01,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:07:01,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:07:01" (1/1) ... [2020-10-20 03:07:01,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d516685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:01, skipping insertion in model container [2020-10-20 03:07:01,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:07:01" (1/1) ... [2020-10-20 03:07:01,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:07:01,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:07:02,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:07:02,172 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:07:02,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:07:02,336 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:07:02,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:02 WrapperNode [2020-10-20 03:07:02,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:07:02,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:07:02,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:07:02,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:07:02,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:02" (1/1) ... [2020-10-20 03:07:02,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:02" (1/1) ... [2020-10-20 03:07:02,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:07:02,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:07:02,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:07:02,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:07:02,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:02" (1/1) ... [2020-10-20 03:07:02,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:02" (1/1) ... [2020-10-20 03:07:02,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:02" (1/1) ... [2020-10-20 03:07:02,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:02" (1/1) ... [2020-10-20 03:07:02,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:02" (1/1) ... [2020-10-20 03:07:02,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:02" (1/1) ... [2020-10-20 03:07:02,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:02" (1/1) ... [2020-10-20 03:07:02,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:07:02,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:07:02,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:07:02,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:07:02,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:02" (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 03:07:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:07:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:07:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:07:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:07:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:07:02,528 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:07:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:07:02,529 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:07:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:07:02,530 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:07:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:07:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:07:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:07:02,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:07:02,533 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 03:07:02,990 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:07:02,991 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:07:02,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:07:02 BoogieIcfgContainer [2020-10-20 03:07:02,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:07:02,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:07:02,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:07:02,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:07:02,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:07:01" (1/3) ... [2020-10-20 03:07:03,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469188ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:07:03, skipping insertion in model container [2020-10-20 03:07:03,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:07:02" (2/3) ... [2020-10-20 03:07:03,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469188ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:07:03, skipping insertion in model container [2020-10-20 03:07:03,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:07:02" (3/3) ... [2020-10-20 03:07:03,003 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2020-10-20 03:07:03,016 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:07:03,016 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:07:03,024 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:07:03,025 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:07:03,051 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,052 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,052 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,053 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,053 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,054 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,054 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,055 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,055 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,055 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,055 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,056 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,057 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,057 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,058 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,058 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,062 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,062 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,063 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,063 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,071 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,071 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,072 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,072 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,074 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,075 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,075 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,075 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:07:03,078 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:07:03,092 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:07:03,112 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:07:03,112 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:07:03,112 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:07:03,112 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:07:03,112 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:07:03,113 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:07:03,113 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:07:03,113 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:07:03,125 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:07:03,127 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-10-20 03:07:03,130 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-10-20 03:07:03,131 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-10-20 03:07:03,175 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-10-20 03:07:03,175 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:07:03,190 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-10-20 03:07:03,193 INFO L117 LiptonReduction]: Number of co-enabled transitions 1348 [2020-10-20 03:07:03,476 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-10-20 03:07:05,026 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-20 03:07:05,137 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-20 03:07:05,166 INFO L132 LiptonReduction]: Checked pairs total: 2469 [2020-10-20 03:07:05,166 INFO L134 LiptonReduction]: Total number of compositions: 72 [2020-10-20 03:07:05,173 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-20 03:07:05,225 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-20 03:07:05,227 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-20 03:07:05,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:07:05,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:07:05,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:07:05,236 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:07:05,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:07:05,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1935178246, now seen corresponding path program 1 times [2020-10-20 03:07:05,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:07:05,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261133298] [2020-10-20 03:07:05,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:07:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:07:05,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:07:05,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261133298] [2020-10-20 03:07:05,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:07:05,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:07:05,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776447796] [2020-10-20 03:07:05,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 03:07:05,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:07:05,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 03:07:05,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:07:05,458 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-20 03:07:05,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:07:05,490 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-20 03:07:05,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 03:07:05,492 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 03:07:05,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:07:05,509 INFO L225 Difference]: With dead ends: 274 [2020-10-20 03:07:05,510 INFO L226 Difference]: Without dead ends: 226 [2020-10-20 03:07:05,515 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 03:07:05,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-20 03:07:05,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-20 03:07:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-20 03:07:05,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-20 03:07:05,599 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-20 03:07:05,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:07:05,600 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-20 03:07:05,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 03:07:05,600 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-20 03:07:05,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:07:05,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:07:05,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:07:05,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:07:05,604 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:07:05,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:07:05,605 INFO L82 PathProgramCache]: Analyzing trace with hash -139024564, now seen corresponding path program 1 times [2020-10-20 03:07:05,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:07:05,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59297173] [2020-10-20 03:07:05,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:07:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:07:05,752 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 03:07:05,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59297173] [2020-10-20 03:07:05,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:07:05,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:07:05,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311707864] [2020-10-20 03:07:05,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:07:05,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:07:05,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:07:05,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:07:05,756 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 3 states. [2020-10-20 03:07:05,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:07:05,782 INFO L93 Difference]: Finished difference Result 172 states and 418 transitions. [2020-10-20 03:07:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:07:05,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 03:07:05,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:07:05,785 INFO L225 Difference]: With dead ends: 172 [2020-10-20 03:07:05,786 INFO L226 Difference]: Without dead ends: 172 [2020-10-20 03:07:05,788 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 03:07:05,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-20 03:07:05,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-10-20 03:07:05,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-20 03:07:05,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 418 transitions. [2020-10-20 03:07:05,803 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 418 transitions. Word has length 9 [2020-10-20 03:07:05,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:07:05,803 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 418 transitions. [2020-10-20 03:07:05,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:07:05,804 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 418 transitions. [2020-10-20 03:07:05,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:07:05,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:07:05,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:07:05,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:07:05,806 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:07:05,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:07:05,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1635413154, now seen corresponding path program 1 times [2020-10-20 03:07:05,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:07:05,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826987536] [2020-10-20 03:07:05,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:07:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:07:06,030 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 03:07:06,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826987536] [2020-10-20 03:07:06,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:07:06,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:07:06,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28799847] [2020-10-20 03:07:06,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:07:06,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:07:06,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:07:06,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:07:06,033 INFO L87 Difference]: Start difference. First operand 172 states and 418 transitions. Second operand 4 states. [2020-10-20 03:07:06,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:07:06,061 INFO L93 Difference]: Finished difference Result 109 states and 229 transitions. [2020-10-20 03:07:06,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:07:06,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 03:07:06,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:07:06,063 INFO L225 Difference]: With dead ends: 109 [2020-10-20 03:07:06,063 INFO L226 Difference]: Without dead ends: 109 [2020-10-20 03:07:06,064 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 03:07:06,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-20 03:07:06,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-20 03:07:06,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-20 03:07:06,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 229 transitions. [2020-10-20 03:07:06,072 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 229 transitions. Word has length 11 [2020-10-20 03:07:06,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:07:06,072 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 229 transitions. [2020-10-20 03:07:06,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:07:06,073 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 229 transitions. [2020-10-20 03:07:06,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:07:06,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:07:06,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:07:06,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:07:06,075 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:07:06,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:07:06,076 INFO L82 PathProgramCache]: Analyzing trace with hash 395532943, now seen corresponding path program 1 times [2020-10-20 03:07:06,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:07:06,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510270780] [2020-10-20 03:07:06,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:07:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:07:06,127 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 03:07:06,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510270780] [2020-10-20 03:07:06,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:07:06,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:07:06,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456768898] [2020-10-20 03:07:06,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:07:06,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:07:06,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:07:06,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:07:06,129 INFO L87 Difference]: Start difference. First operand 109 states and 229 transitions. Second operand 5 states. [2020-10-20 03:07:06,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:07:06,157 INFO L93 Difference]: Finished difference Result 85 states and 181 transitions. [2020-10-20 03:07:06,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:07:06,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-20 03:07:06,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:07:06,160 INFO L225 Difference]: With dead ends: 85 [2020-10-20 03:07:06,160 INFO L226 Difference]: Without dead ends: 85 [2020-10-20 03:07:06,160 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 03:07:06,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-20 03:07:06,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-20 03:07:06,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-20 03:07:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 181 transitions. [2020-10-20 03:07:06,166 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 181 transitions. Word has length 14 [2020-10-20 03:07:06,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:07:06,167 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 181 transitions. [2020-10-20 03:07:06,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:07:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 181 transitions. [2020-10-20 03:07:06,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:07:06,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:07:06,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:07:06,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:07:06,170 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:07:06,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:07:06,170 INFO L82 PathProgramCache]: Analyzing trace with hash 781717809, now seen corresponding path program 1 times [2020-10-20 03:07:06,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:07:06,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88341854] [2020-10-20 03:07:06,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:07:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:07:06,284 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 03:07:06,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88341854] [2020-10-20 03:07:06,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:07:06,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:07:06,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120599103] [2020-10-20 03:07:06,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:07:06,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:07:06,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:07:06,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:07:06,290 INFO L87 Difference]: Start difference. First operand 85 states and 181 transitions. Second operand 4 states. [2020-10-20 03:07:06,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:07:06,325 INFO L93 Difference]: Finished difference Result 111 states and 227 transitions. [2020-10-20 03:07:06,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:07:06,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-20 03:07:06,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:07:06,330 INFO L225 Difference]: With dead ends: 111 [2020-10-20 03:07:06,331 INFO L226 Difference]: Without dead ends: 61 [2020-10-20 03:07:06,331 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 03:07:06,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-20 03:07:06,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-20 03:07:06,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-20 03:07:06,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 113 transitions. [2020-10-20 03:07:06,340 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 113 transitions. Word has length 17 [2020-10-20 03:07:06,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:07:06,340 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 113 transitions. [2020-10-20 03:07:06,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:07:06,342 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 113 transitions. [2020-10-20 03:07:06,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:07:06,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:07:06,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:07:06,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:07:06,345 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:07:06,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:07:06,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1128654861, now seen corresponding path program 2 times [2020-10-20 03:07:06,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:07:06,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644638722] [2020-10-20 03:07:06,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:07:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:07:06,446 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 03:07:06,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644638722] [2020-10-20 03:07:06,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:07:06,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:07:06,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773108535] [2020-10-20 03:07:06,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:07:06,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:07:06,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:07:06,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:07:06,450 INFO L87 Difference]: Start difference. First operand 61 states and 113 transitions. Second operand 5 states. [2020-10-20 03:07:06,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:07:06,502 INFO L93 Difference]: Finished difference Result 81 states and 148 transitions. [2020-10-20 03:07:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:07:06,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-20 03:07:06,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:07:06,504 INFO L225 Difference]: With dead ends: 81 [2020-10-20 03:07:06,504 INFO L226 Difference]: Without dead ends: 55 [2020-10-20 03:07:06,504 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 03:07:06,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-20 03:07:06,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-20 03:07:06,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-20 03:07:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 101 transitions. [2020-10-20 03:07:06,510 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 101 transitions. Word has length 17 [2020-10-20 03:07:06,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:07:06,510 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 101 transitions. [2020-10-20 03:07:06,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:07:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 101 transitions. [2020-10-20 03:07:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:07:06,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:07:06,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:07:06,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:07:06,513 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:07:06,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:07:06,513 INFO L82 PathProgramCache]: Analyzing trace with hash -842301437, now seen corresponding path program 3 times [2020-10-20 03:07:06,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:07:06,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370340390] [2020-10-20 03:07:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:07:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:07:06,630 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 03:07:06,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370340390] [2020-10-20 03:07:06,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:07:06,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:07:06,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996032401] [2020-10-20 03:07:06,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:07:06,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:07:06,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:07:06,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:07:06,634 INFO L87 Difference]: Start difference. First operand 55 states and 101 transitions. Second operand 5 states. [2020-10-20 03:07:06,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:07:06,674 INFO L93 Difference]: Finished difference Result 54 states and 100 transitions. [2020-10-20 03:07:06,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:07:06,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-20 03:07:06,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:07:06,674 INFO L225 Difference]: With dead ends: 54 [2020-10-20 03:07:06,675 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:07:06,676 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 [2020-10-20 03:07:06,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:07:06,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:07:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:07:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:07:06,676 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-20 03:07:06,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:07:06,677 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:07:06,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:07:06,677 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:07:06,677 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:07:06,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:07:06,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:07:06 BasicIcfg [2020-10-20 03:07:06,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:07:06,682 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:07:06,682 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:07:06,682 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:07:06,683 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:07:02" (3/4) ... [2020-10-20 03:07:06,686 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:07:06,694 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:07:06,695 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:07:06,695 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:07:06,702 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:07:06,702 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:07:06,702 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:07:06,702 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:07:06,775 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:07:06,775 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:07:06,777 INFO L168 Benchmark]: Toolchain (without parser) took 5101.80 ms. Allocated memory was 34.1 MB in the beginning and 75.5 MB in the end (delta: 41.4 MB). Free memory was 13.0 MB in the beginning and 25.5 MB in the end (delta: -12.5 MB). Peak memory consumption was 28.9 MB. Max. memory is 14.3 GB. [2020-10-20 03:07:06,778 INFO L168 Benchmark]: CDTParser took 0.84 ms. Allocated memory is still 32.5 MB. Free memory was 9.5 MB in the beginning and 9.4 MB in the end (delta: 62.9 kB). Peak memory consumption was 62.9 kB. Max. memory is 14.3 GB. [2020-10-20 03:07:06,778 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.08 ms. Allocated memory was 34.1 MB in the beginning and 41.9 MB in the end (delta: 7.9 MB). Free memory was 12.1 MB in the beginning and 15.6 MB in the end (delta: -3.4 MB). Peak memory consumption was 12.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:07:06,779 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.78 ms. Allocated memory is still 41.9 MB. Free memory was 15.6 MB in the beginning and 13.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:07:06,779 INFO L168 Benchmark]: Boogie Preprocessor took 27.36 ms. Allocated memory is still 41.9 MB. Free memory was 13.5 MB in the beginning and 11.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:07:06,780 INFO L168 Benchmark]: RCFGBuilder took 567.67 ms. Allocated memory was 41.9 MB in the beginning and 45.1 MB in the end (delta: 3.1 MB). Free memory was 11.7 MB in the beginning and 24.0 MB in the end (delta: -12.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:07:06,781 INFO L168 Benchmark]: TraceAbstraction took 3686.53 ms. Allocated memory was 45.1 MB in the beginning and 75.5 MB in the end (delta: 30.4 MB). Free memory was 23.7 MB in the beginning and 28.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 25.3 MB. Max. memory is 14.3 GB. [2020-10-20 03:07:06,781 INFO L168 Benchmark]: Witness Printer took 93.49 ms. Allocated memory is still 75.5 MB. Free memory was 28.8 MB in the beginning and 25.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. [2020-10-20 03:07:06,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84 ms. Allocated memory is still 32.5 MB. Free memory was 9.5 MB in the beginning and 9.4 MB in the end (delta: 62.9 kB). Peak memory consumption was 62.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 658.08 ms. Allocated memory was 34.1 MB in the beginning and 41.9 MB in the end (delta: 7.9 MB). Free memory was 12.1 MB in the beginning and 15.6 MB in the end (delta: -3.4 MB). Peak memory consumption was 12.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 58.78 ms. Allocated memory is still 41.9 MB. Free memory was 15.6 MB in the beginning and 13.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 27.36 ms. Allocated memory is still 41.9 MB. Free memory was 13.5 MB in the beginning and 11.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 567.67 ms. Allocated memory was 41.9 MB in the beginning and 45.1 MB in the end (delta: 3.1 MB). Free memory was 11.7 MB in the beginning and 24.0 MB in the end (delta: -12.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3686.53 ms. Allocated memory was 45.1 MB in the beginning and 75.5 MB in the end (delta: 30.4 MB). Free memory was 23.7 MB in the beginning and 28.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 25.3 MB. Max. memory is 14.3 GB. * Witness Printer took 93.49 ms. Allocated memory is still 75.5 MB. Free memory was 28.8 MB in the beginning and 25.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 947 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 59 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 84 PlacesBefore, 31 PlacesAfterwards, 77 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2469 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, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 120 SDtfs, 82 SDslu, 160 SDs, 0 SdLazy, 59 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 2940 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...