./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe018_tso.opt.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/safe018_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aae43c48d6bb273b2091b89bffd563cd24fb680d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:05:40,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:05:40,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:05:40,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:05:40,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:05:40,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:05:40,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:05:40,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:05:40,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:05:40,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:05:40,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:05:40,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:05:40,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:05:40,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:05:40,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:05:40,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:05:40,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:05:40,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:05:40,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:05:40,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:05:40,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:05:40,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:05:40,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:05:40,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:05:40,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:05:40,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:05:40,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:05:40,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:05:40,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:05:40,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:05:40,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:05:40,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:05:40,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:05:40,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:05:40,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:05:40,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:05:40,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:05:40,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:05:40,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:05:40,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:05:40,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:05:40,508 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:05:40,530 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:05:40,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:05:40,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:05:40,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:05:40,532 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:05:40,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:05:40,533 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:05:40,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:05:40,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:05:40,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:05:40,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:05:40,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:05:40,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:05:40,535 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:05:40,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:05:40,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:05:40,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:05:40,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:05:40,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:05:40,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:05:40,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:05:40,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:05:40,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:05:40,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:05:40,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:05:40,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:05:40,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:05:40,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:05:40,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:05:40,539 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 -> aae43c48d6bb273b2091b89bffd563cd24fb680d [2020-10-20 03:05:40,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:05:40,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:05:40,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:05:40,777 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:05:40,778 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:05:40,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe018_tso.opt.i [2020-10-20 03:05:40,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39c94304a/cd369c5bff0d4b3e88865ba2a713ee8a/FLAG5699e0091 [2020-10-20 03:05:41,425 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:05:41,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe018_tso.opt.i [2020-10-20 03:05:41,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39c94304a/cd369c5bff0d4b3e88865ba2a713ee8a/FLAG5699e0091 [2020-10-20 03:05:41,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39c94304a/cd369c5bff0d4b3e88865ba2a713ee8a [2020-10-20 03:05:41,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:05:41,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:05:41,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:05:41,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:05:41,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:05:41,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:05:41" (1/1) ... [2020-10-20 03:05:41,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b06922a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:41, skipping insertion in model container [2020-10-20 03:05:41,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:05:41" (1/1) ... [2020-10-20 03:05:41,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:05:41,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:05:42,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:05:42,256 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:05:42,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:05:42,405 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:05:42,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:42 WrapperNode [2020-10-20 03:05:42,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:05:42,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:05:42,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:05:42,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:05:42,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:42" (1/1) ... [2020-10-20 03:05:42,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:42" (1/1) ... [2020-10-20 03:05:42,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:05:42,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:05:42,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:05:42,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:05:42,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:42" (1/1) ... [2020-10-20 03:05:42,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:42" (1/1) ... [2020-10-20 03:05:42,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:42" (1/1) ... [2020-10-20 03:05:42,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:42" (1/1) ... [2020-10-20 03:05:42,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:42" (1/1) ... [2020-10-20 03:05:42,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:42" (1/1) ... [2020-10-20 03:05:42,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:42" (1/1) ... [2020-10-20 03:05:42,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:05:42,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:05:42,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:05:42,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:05:42,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:42" (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 03:05:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:05:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:05:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:05:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:05:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:05:42,565 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:05:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:05:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:05:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:05:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:05:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:05:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:05:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:05:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:05:42,569 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 03:05:42,966 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:05:42,966 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:05:42,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:05:42 BoogieIcfgContainer [2020-10-20 03:05:42,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:05:42,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:05:42,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:05:42,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:05:42,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:05:41" (1/3) ... [2020-10-20 03:05:42,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d1cf6fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:05:42, skipping insertion in model container [2020-10-20 03:05:42,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:42" (2/3) ... [2020-10-20 03:05:42,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d1cf6fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:05:42, skipping insertion in model container [2020-10-20 03:05:42,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:05:42" (3/3) ... [2020-10-20 03:05:42,978 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.opt.i [2020-10-20 03:05:42,991 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:05:42,991 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:05:43,000 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:05:43,004 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:05:43,058 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,058 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,058 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,059 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,060 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,061 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,062 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,062 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,064 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,064 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,064 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,064 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,065 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,065 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,074 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,075 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,075 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,075 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,085 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,086 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,095 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,095 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,095 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,096 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:43,098 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:05:43,112 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:05:43,135 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:05:43,136 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:05:43,136 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:05:43,136 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:05:43,136 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:05:43,136 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:05:43,136 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:05:43,136 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:05:43,151 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:05:43,153 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-20 03:05:43,156 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-20 03:05:43,158 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-20 03:05:43,221 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-20 03:05:43,223 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:05:43,232 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 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-10-20 03:05:43,239 INFO L117 LiptonReduction]: Number of co-enabled transitions 1348 [2020-10-20 03:05:44,775 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-20 03:05:45,050 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-20 03:05:45,348 INFO L132 LiptonReduction]: Checked pairs total: 2462 [2020-10-20 03:05:45,348 INFO L134 LiptonReduction]: Total number of compositions: 71 [2020-10-20 03:05:45,367 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-20 03:05:45,409 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-20 03:05:45,412 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-20 03:05:45,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:05:45,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:45,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:45,427 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:45,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:45,433 INFO L82 PathProgramCache]: Analyzing trace with hash 911607414, now seen corresponding path program 1 times [2020-10-20 03:05:45,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:45,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045068999] [2020-10-20 03:05:45,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:45,642 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 03:05:45,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045068999] [2020-10-20 03:05:45,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:45,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:05:45,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669771373] [2020-10-20 03:05:45,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 03:05:45,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:45,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 03:05:45,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:05:45,671 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-20 03:05:45,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:45,702 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-20 03:05:45,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 03:05:45,703 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 03:05:45,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:45,720 INFO L225 Difference]: With dead ends: 274 [2020-10-20 03:05:45,721 INFO L226 Difference]: Without dead ends: 226 [2020-10-20 03:05:45,722 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 03:05:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-20 03:05:45,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-20 03:05:45,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-20 03:05:45,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-20 03:05:45,792 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-20 03:05:45,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:45,793 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-20 03:05:45,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 03:05:45,793 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-20 03:05:45,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:05:45,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:45,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:45,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:05:45,795 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:45,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:45,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1804948320, now seen corresponding path program 1 times [2020-10-20 03:05:45,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:45,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427823156] [2020-10-20 03:05:45,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:45,959 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 03:05:45,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427823156] [2020-10-20 03:05:45,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:45,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:05:45,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588866615] [2020-10-20 03:05:45,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:05:45,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:45,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:05:45,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:05:45,964 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-10-20 03:05:46,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:46,026 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-10-20 03:05:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:05:46,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 03:05:46,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:46,030 INFO L225 Difference]: With dead ends: 250 [2020-10-20 03:05:46,033 INFO L226 Difference]: Without dead ends: 202 [2020-10-20 03:05:46,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:05:46,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-20 03:05:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-20 03:05:46,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-20 03:05:46,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-10-20 03:05:46,067 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-10-20 03:05:46,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:46,068 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-10-20 03:05:46,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:05:46,069 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-10-20 03:05:46,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:05:46,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:46,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:46,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:05:46,072 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:46,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:46,072 INFO L82 PathProgramCache]: Analyzing trace with hash 834020007, now seen corresponding path program 1 times [2020-10-20 03:05:46,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:46,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355613912] [2020-10-20 03:05:46,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:46,167 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 03:05:46,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355613912] [2020-10-20 03:05:46,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:46,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:05:46,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310299386] [2020-10-20 03:05:46,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:05:46,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:46,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:05:46,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:05:46,170 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-10-20 03:05:46,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:46,226 INFO L93 Difference]: Finished difference Result 238 states and 627 transitions. [2020-10-20 03:05:46,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:05:46,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-20 03:05:46,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:46,231 INFO L225 Difference]: With dead ends: 238 [2020-10-20 03:05:46,231 INFO L226 Difference]: Without dead ends: 106 [2020-10-20 03:05:46,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 03:05:46,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-20 03:05:46,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-10-20 03:05:46,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-20 03:05:46,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 258 transitions. [2020-10-20 03:05:46,240 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 258 transitions. Word has length 10 [2020-10-20 03:05:46,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:46,241 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 258 transitions. [2020-10-20 03:05:46,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:05:46,241 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 258 transitions. [2020-10-20 03:05:46,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:05:46,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:46,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:46,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:05:46,243 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:46,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:46,244 INFO L82 PathProgramCache]: Analyzing trace with hash 739020719, now seen corresponding path program 1 times [2020-10-20 03:05:46,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:46,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240862978] [2020-10-20 03:05:46,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:46,313 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 03:05:46,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240862978] [2020-10-20 03:05:46,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:46,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:05:46,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604587187] [2020-10-20 03:05:46,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:05:46,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:46,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:05:46,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:05:46,316 INFO L87 Difference]: Start difference. First operand 106 states and 258 transitions. Second operand 5 states. [2020-10-20 03:05:46,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:46,382 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-10-20 03:05:46,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:05:46,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 03:05:46,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:46,384 INFO L225 Difference]: With dead ends: 148 [2020-10-20 03:05:46,384 INFO L226 Difference]: Without dead ends: 76 [2020-10-20 03:05:46,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 03:05:46,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-20 03:05:46,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-20 03:05:46,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-20 03:05:46,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 169 transitions. [2020-10-20 03:05:46,390 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 169 transitions. Word has length 12 [2020-10-20 03:05:46,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:46,391 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 169 transitions. [2020-10-20 03:05:46,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:05:46,391 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 169 transitions. [2020-10-20 03:05:46,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:05:46,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:46,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:46,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:05:46,393 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:46,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:46,394 INFO L82 PathProgramCache]: Analyzing trace with hash -254241509, now seen corresponding path program 1 times [2020-10-20 03:05:46,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:46,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838975818] [2020-10-20 03:05:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:46,464 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 03:05:46,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838975818] [2020-10-20 03:05:46,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:46,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:05:46,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344689371] [2020-10-20 03:05:46,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:05:46,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:46,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:05:46,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:05:46,467 INFO L87 Difference]: Start difference. First operand 76 states and 169 transitions. Second operand 4 states. [2020-10-20 03:05:46,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:46,501 INFO L93 Difference]: Finished difference Result 87 states and 174 transitions. [2020-10-20 03:05:46,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:05:46,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-20 03:05:46,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:46,503 INFO L225 Difference]: With dead ends: 87 [2020-10-20 03:05:46,503 INFO L226 Difference]: Without dead ends: 66 [2020-10-20 03:05:46,503 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 03:05:46,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-20 03:05:46,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-20 03:05:46,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-20 03:05:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 133 transitions. [2020-10-20 03:05:46,507 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 133 transitions. Word has length 13 [2020-10-20 03:05:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:46,508 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 133 transitions. [2020-10-20 03:05:46,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:05:46,508 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 133 transitions. [2020-10-20 03:05:46,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:05:46,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:46,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:46,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:05:46,509 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:46,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:46,509 INFO L82 PathProgramCache]: Analyzing trace with hash 734665460, now seen corresponding path program 1 times [2020-10-20 03:05:46,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:46,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305686848] [2020-10-20 03:05:46,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:46,574 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 03:05:46,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305686848] [2020-10-20 03:05:46,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:46,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:05:46,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408617491] [2020-10-20 03:05:46,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:05:46,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:46,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:05:46,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:05:46,577 INFO L87 Difference]: Start difference. First operand 66 states and 133 transitions. Second operand 5 states. [2020-10-20 03:05:46,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:46,616 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-10-20 03:05:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:05:46,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-20 03:05:46,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:46,617 INFO L225 Difference]: With dead ends: 62 [2020-10-20 03:05:46,617 INFO L226 Difference]: Without dead ends: 47 [2020-10-20 03:05:46,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:05:46,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-20 03:05:46,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-20 03:05:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 03:05:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-10-20 03:05:46,621 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-10-20 03:05:46,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:46,622 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-10-20 03:05:46,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:05:46,622 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-10-20 03:05:46,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:05:46,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:46,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:46,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:05:46,624 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:46,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:46,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1299079363, now seen corresponding path program 1 times [2020-10-20 03:05:46,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:46,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453778923] [2020-10-20 03:05:46,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:46,681 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 03:05:46,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453778923] [2020-10-20 03:05:46,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:46,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 03:05:46,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76459281] [2020-10-20 03:05:46,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:05:46,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:46,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:05:46,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:05:46,684 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-10-20 03:05:46,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:46,749 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2020-10-20 03:05:46,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:05:46,750 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 03:05:46,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:46,750 INFO L225 Difference]: With dead ends: 40 [2020-10-20 03:05:46,750 INFO L226 Difference]: Without dead ends: 34 [2020-10-20 03:05:46,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:05:46,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-20 03:05:46,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-20 03:05:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-20 03:05:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-10-20 03:05:46,753 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 15 [2020-10-20 03:05:46,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:46,753 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-10-20 03:05:46,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:05:46,754 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-10-20 03:05:46,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:05:46,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:46,754 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 03:05:46,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:05:46,755 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:46,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:46,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1284707522, now seen corresponding path program 1 times [2020-10-20 03:05:46,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:46,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913560164] [2020-10-20 03:05:46,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:46,886 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 03:05:46,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913560164] [2020-10-20 03:05:46,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:46,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 03:05:46,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354148575] [2020-10-20 03:05:46,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 03:05:46,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:46,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 03:05:46,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 03:05:46,888 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 10 states. [2020-10-20 03:05:47,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:47,077 INFO L93 Difference]: Finished difference Result 46 states and 64 transitions. [2020-10-20 03:05:47,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 03:05:47,078 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-20 03:05:47,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:47,078 INFO L225 Difference]: With dead ends: 46 [2020-10-20 03:05:47,078 INFO L226 Difference]: Without dead ends: 28 [2020-10-20 03:05:47,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-20 03:05:47,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-20 03:05:47,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-20 03:05:47,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-20 03:05:47,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-10-20 03:05:47,083 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 17 [2020-10-20 03:05:47,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:47,084 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-10-20 03:05:47,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 03:05:47,084 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-10-20 03:05:47,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:05:47,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:47,085 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 03:05:47,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:05:47,085 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:47,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:47,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1493599964, now seen corresponding path program 2 times [2020-10-20 03:05:47,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:47,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783618208] [2020-10-20 03:05:47,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:47,205 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 03:05:47,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783618208] [2020-10-20 03:05:47,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:47,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 03:05:47,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334555410] [2020-10-20 03:05:47,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 03:05:47,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:47,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 03:05:47,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-20 03:05:47,208 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 10 states. [2020-10-20 03:05:47,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:47,288 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-10-20 03:05:47,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 03:05:47,288 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-20 03:05:47,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:47,289 INFO L225 Difference]: With dead ends: 27 [2020-10-20 03:05:47,289 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:05:47,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-20 03:05:47,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:05:47,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:05:47,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:05:47,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:05:47,291 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-20 03:05:47,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:47,291 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:05:47,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 03:05:47,292 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:05:47,292 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:05:47,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 03:05:47,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:05:47 BasicIcfg [2020-10-20 03:05:47,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:05:47,295 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:05:47,295 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:05:47,295 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:05:47,296 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:05:42" (3/4) ... [2020-10-20 03:05:47,299 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:05:47,306 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:05:47,307 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:05:47,307 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:05:47,312 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:05:47,312 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:05:47,312 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:05:47,312 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:05:47,363 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:05:47,363 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:05:47,365 INFO L168 Benchmark]: Toolchain (without parser) took 5657.53 ms. Allocated memory was 39.8 MB in the beginning and 72.4 MB in the end (delta: 32.5 MB). Free memory was 15.4 MB in the beginning and 10.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 37.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:47,366 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 30.4 MB. Free memory was 16.6 MB in the beginning and 16.6 MB in the end (delta: 31.4 kB). Peak memory consumption was 31.4 kB. Max. memory is 14.3 GB. [2020-10-20 03:05:47,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.71 ms. Allocated memory was 39.8 MB in the beginning and 43.0 MB in the end (delta: 3.1 MB). Free memory was 14.6 MB in the beginning and 23.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:47,369 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.24 ms. Allocated memory is still 43.0 MB. Free memory was 23.7 MB in the beginning and 21.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:47,369 INFO L168 Benchmark]: Boogie Preprocessor took 35.93 ms. Allocated memory is still 43.0 MB. Free memory was 21.7 MB in the beginning and 19.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:47,370 INFO L168 Benchmark]: RCFGBuilder took 477.39 ms. Allocated memory was 43.0 MB in the beginning and 44.6 MB in the end (delta: 1.6 MB). Free memory was 19.9 MB in the beginning and 12.5 MB in the end (delta: 7.5 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:47,371 INFO L168 Benchmark]: TraceAbstraction took 4324.94 ms. Allocated memory was 44.6 MB in the beginning and 72.4 MB in the end (delta: 27.8 MB). Free memory was 12.2 MB in the beginning and 15.1 MB in the end (delta: -2.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:47,371 INFO L168 Benchmark]: Witness Printer took 68.33 ms. Allocated memory is still 72.4 MB. Free memory was 14.2 MB in the beginning and 10.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:47,376 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 30.4 MB. Free memory was 16.6 MB in the beginning and 16.6 MB in the end (delta: 31.4 kB). Peak memory consumption was 31.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 692.71 ms. Allocated memory was 39.8 MB in the beginning and 43.0 MB in the end (delta: 3.1 MB). Free memory was 14.6 MB in the beginning and 23.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 48.24 ms. Allocated memory is still 43.0 MB. Free memory was 23.7 MB in the beginning and 21.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 35.93 ms. Allocated memory is still 43.0 MB. Free memory was 21.7 MB in the beginning and 19.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 477.39 ms. Allocated memory was 43.0 MB in the beginning and 44.6 MB in the end (delta: 1.6 MB). Free memory was 19.9 MB in the beginning and 12.5 MB in the end (delta: 7.5 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4324.94 ms. Allocated memory was 44.6 MB in the beginning and 72.4 MB in the end (delta: 27.8 MB). Free memory was 12.2 MB in the beginning and 15.1 MB in the end (delta: -2.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 14.3 GB. * Witness Printer took 68.33 ms. Allocated memory is still 72.4 MB. Free memory was 14.2 MB in the beginning and 10.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 949 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2462 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: 4.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 164 SDtfs, 184 SDslu, 379 SDs, 0 SdLazy, 325 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 5856 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...